fix(stream): update ToHeader function to accept pointer to header buffer and return copy

- Added information about the loading page (HTML + JS + CSS) and the SSE endpoint for wake events.
- Clarified the health monitor implementation and readiness tracking in the architecture overview.
- Correct state machine syntax.

.github/workflows/docker-image-socket-proxy.yml

@@ -6,13 +6,12 @@ on:
       - main
     paths:
       - "socket-proxy/**"
+      - "socket-proxy.Dockerfile"
+      - ".github/workflows/docker-image-socket-proxy.yml"
     tags-ignore:
-      - '**'
+      - "**"
   workflow_dispatch:
 
-permissions:
-  contents: read
-
 jobs:
   build:
     uses: ./.github/workflows/docker-image.yml

.github/workflows/merge-main-into-compat.yml

@@ -0,0 +1,39 @@
+name: Cherry-pick into Compat
+
+on:
+  push:
+    tags:
+      - v*
+    paths:
+      - ".github/workflows/merge-main-into-compat.yml"
+
+jobs:
+  cherry-pick:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Configure git user
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+      - name: Cherry-pick commits from last tag
+        run: |
+          git fetch origin compat
+          git checkout compat
+          CURRENT_TAG=${{ github.ref_name }}
+          PREV_TAG=$(git describe --tags --abbrev=0 $CURRENT_TAG^ 2>/dev/null || echo "")
+
+          if [ -z "$PREV_TAG" ]; then
+            echo "No previous tag found. Cherry-picking all commits up to $CURRENT_TAG"
+            git rev-list --reverse --no-merges $CURRENT_TAG | xargs -r git cherry-pick
+          else
+            echo "Cherry-picking commits from $PREV_TAG to $CURRENT_TAG"
+            git rev-list --reverse --no-merges $PREV_TAG..$CURRENT_TAG | xargs -r git cherry-pick
+          fi
+      - name: Push compat
+        run: |
+          git push origin compat

.gitignore

@@ -40,3 +40,4 @@ tsconfig.tsbuildinfo
 
 !agent.compose.yml
 !agent/pkg/**
+dev-data/

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: deps
-FROM golang:1.25.4-alpine AS deps
+FROM golang:1.25.5-alpine AS deps
 HEALTHCHECK NONE
 
 # package version does not matter
@@ -19,7 +19,9 @@ COPY go.mod go.sum ./
 # remove godoxy stuff from go.mod first
 RUN --mount=type=cache,target=/root/.cache/go-build \
   --mount=type=cache,target=/root/go/pkg/mod \
-  sed -i '/^module github\.com\/yusing\/godoxy/!{/github\.com\/yusing\/godoxy/d}' go.mod && go mod download -x
+  sed -i '/^module github\.com\/yusing\/godoxy/!{/github\.com\/yusing\/godoxy/d}' go.mod && \
+  sed -i '/^module github\.com\/yusing\/goutils/!{/github\.com\/yusing\/goutils/d}' go.mod && \
+  go mod download -x
 
 # Stage 2: builder
 FROM deps AS builder

Makefile

@@ -35,7 +35,7 @@ else ifeq ($(debug), 1)
 	CGO_ENABLED = 1
 	GODOXY_DEBUG = 1
 	GO_TAGS += debug
-	BUILD_FLAGS += -asan # FIXME: -gcflags=all='-N -l'
+	# FIXME: BUILD_FLAGS += -asan -gcflags=all='-N -l'
 else ifeq ($(pprof), 1)
 	CGO_ENABLED = 0
 	GORACE = log_path=logs/pprof strip_path_prefix=$(shell pwd)/ halt_on_error=1
@@ -75,11 +75,12 @@ endif
 .PHONY: debug
 
 test:
-	go test -v -race ./internal/...
+	CGO_ENABLED=1 go test -v -race ${BUILD_FLAGS} ./internal/...
 
 docker-build-test:
 	docker build -t godoxy .
 	docker build --build-arg=MAKE_ARGS=agent=1 -t godoxy-agent .
+	docker build --build-arg=MAKE_ARGS=socket-proxy=1 -t godoxy-socket-proxy .
 
 go_ver := $(shell go version | cut -d' ' -f3 | cut -d'o' -f2)
 files := $(shell find . -name go.mod -type f -or -name Dockerfile -type f)
@@ -110,7 +111,7 @@ mod-tidy:
 
 build:
 	mkdir -p $(shell dirname ${BIN_PATH})
-	cd ${PWD} && go build ${BUILD_FLAGS} -o ${BIN_PATH} ./cmd
+	go build -C ${PWD} ${BUILD_FLAGS} -o ${BIN_PATH} ./cmd
 	${POST_BUILD}
 
 run:
@@ -122,6 +123,15 @@ dev:
 dev-build: build
 	docker compose -f dev.compose.yml up -t 0 -d app --force-recreate
 
+benchmark:
+	@if [ -z "$(TARGET)" ]; then \
+		docker compose -f dev.compose.yml up -d --force-recreate godoxy traefik caddy nginx; \
+	else \
+		docker compose -f dev.compose.yml up -d --force-recreate $(TARGET); \
+	fi
+	sleep 1
+	@./scripts/benchmark.sh
+
 dev-run: build
 	cd dev-data && ${BIN_PATH}
 
@@ -141,12 +151,13 @@ ci-test:
 	act -n --artifact-server-path /tmp/artifacts -s GITHUB_TOKEN="$$(gh auth token)"
 
 cloc:
-	cloc --include-lang=Go --not-match-f '_test.go$$' .
+	scc -w -i go --not-match '_test.go$$'
 
 push-github:
 	git push origin $(shell git rev-parse --abbrev-ref HEAD)
 
 gen-swagger:
+  # go install github.com/swaggo/swag/cmd/swag@latest
 	swag init --parseDependency --parseInternal --parseFuncBody -g handler.go -d internal/api -o internal/api/v1/docs
 	python3 scripts/fix-swagger-json.py
 	# we don't need this
@@ -160,4 +171,8 @@ gen-api-types: gen-swagger
 	# --disable-throw-on-error
 	bunx --bun swagger-typescript-api generate --sort-types --generate-union-enums --axios --add-readonly --route-types \
 		 --responses -o ${WEBUI_DIR}/lib -n api.ts -p internal/api/v1/docs/swagger.json
-	bunx --bun prettier --config ${WEBUI_DIR}/.prettierrc --write ${WEBUI_DIR}/lib/api.ts
+	bunx --bun prettier --config ${WEBUI_DIR}/.prettierrc --write ${WEBUI_DIR}/lib/api.ts
+
+.PHONY: update-wiki
+update-wiki:
+	DOCS_DIR=${DOCS_DIR} bun --bun scripts/update-wiki/main.ts

agent/cmd/README.md

@@ -0,0 +1,52 @@
+# agent/cmd
+
+The main entry point for the GoDoxy Agent, a secure monitoring and proxy agent that runs alongside Docker containers.
+
+## Overview
+
+This package contains the `main.go` entry point for the GoDoxy Agent. The agent is a TLS-enabled server that provides:
+
+- Secure Docker socket proxying with client certificate authentication
+- HTTP proxy capabilities for container traffic
+- System metrics collection and monitoring
+- Health check endpoints
+
+## Architecture
+
+```mermaid
+graph TD
+    A[main] --> B[Logger Init]
+    A --> C[Load CA Certificate]
+    A --> D[Load Server Certificate]
+    A --> E[Log Version Info]
+    A --> F[Start Agent Server]
+    A --> G[Start Socket Proxy]
+    A --> H[Start System Info Poller]
+    A --> I[Wait Exit]
+
+    F --> F1[TLS with mTLS]
+    F --> F2[Agent Handler]
+    G --> G1[Docker Socket Proxy]
+```
+
+## Main Function Flow
+
+1. **Logger Setup**: Configures zerolog with console output
+1. **Certificate Loading**: Loads CA and server certificates for TLS/mTLS
+1. **Version Logging**: Logs agent version and configuration
+1. **Agent Server**: Starts the main HTTPS server with agent handlers
+1. **Socket Proxy**: Starts Docker socket proxy if configured
+1. **System Monitoring**: Starts system info polling
+1. **Graceful Shutdown**: Waits for exit signal (3 second timeout)
+
+## Configuration
+
+See `agent/pkg/env/README.md` for configuration options.
+
+## Dependencies
+
+- `agent/pkg/agent` - Core agent types and constants
+- `agent/pkg/env` - Environment configuration
+- `agent/pkg/server` - Server implementation
+- `socketproxy/pkg` - Docker socket proxy
+- `internal/metrics/systeminfo` - System metrics

agent/cmd/main.go

@@ -1,21 +1,31 @@
 package main
 
 import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"net"
+	"net/http"
 	"os"
 
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/agent/stream"
 	"github.com/yusing/godoxy/agent/pkg/env"
-	"github.com/yusing/godoxy/agent/pkg/server"
+	"github.com/yusing/godoxy/agent/pkg/handler"
 	"github.com/yusing/godoxy/internal/metrics/systeminfo"
 	socketproxy "github.com/yusing/godoxy/socketproxy/pkg"
+	gperr "github.com/yusing/goutils/errs"
 	httpServer "github.com/yusing/goutils/server"
 	strutils "github.com/yusing/goutils/strings"
 	"github.com/yusing/goutils/task"
 	"github.com/yusing/goutils/version"
 )
 
+// TODO: support IPv6
+
 func main() {
 	writer := zerolog.ConsoleWriter{
 		Out:        os.Stderr,
@@ -52,16 +62,84 @@ func main() {
 Tips:
 1. To change the agent name, you can set the AGENT_NAME environment variable.
 2. To change the agent port, you can set the AGENT_PORT environment variable.
-`)
+	`)
 
 	t := task.RootTask("agent", false)
-	opts := server.Options{
-		CACert:     caCert,
-		ServerCert: srvCert,
-		Port:       env.AgentPort,
+
+	// One TCP listener on AGENT_PORT, then multiplex by TLS ALPN:
+	// - Stream ALPN: route to TCP stream tunnel handler (via http.Server.TLSNextProto)
+	// - Otherwise: route to HTTPS API handler
+	tcpListener, err := net.ListenTCP("tcp", &net.TCPAddr{Port: env.AgentPort})
+	if err != nil {
+		gperr.LogFatal("failed to listen on port", err)
 	}
 
-	server.StartAgentServer(t, opts)
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(caCert.Leaf)
+
+	muxTLSConfig := &tls.Config{
+		Certificates: []tls.Certificate{*srvCert},
+		ClientCAs:    caCertPool,
+		ClientAuth:   tls.RequireAndVerifyClientCert,
+		MinVersion:   tls.VersionTLS12,
+		// Keep HTTP limited to HTTP/1.1 (matching current agent server behavior)
+		// and add the stream tunnel ALPN for multiplexing.
+		NextProtos: []string{"http/1.1", stream.StreamALPN},
+	}
+	if env.AgentSkipClientCertCheck {
+		muxTLSConfig.ClientAuth = tls.NoClientCert
+	}
+
+	// TLS listener feeds the HTTP server. ALPN stream connections are intercepted
+	// using http.Server.TLSNextProto.
+	tlsLn := tls.NewListener(tcpListener, muxTLSConfig)
+
+	streamSrv := stream.NewTCPServerHandler(t.Context())
+
+	httpSrv := &http.Server{
+		Handler: handler.NewAgentHandler(),
+		BaseContext: func(net.Listener) context.Context {
+			return t.Context()
+		},
+		TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){
+			// When a client negotiates StreamALPN, net/http will call this hook instead
+			// of treating the connection as HTTP.
+			stream.StreamALPN: func(_ *http.Server, conn *tls.Conn, _ http.Handler) {
+				// ServeConn blocks until the tunnel finishes.
+				streamSrv.ServeConn(conn)
+			},
+		},
+	}
+	{
+		subtask := t.Subtask("agent-http", true)
+		t.OnCancel("stop_http", func() {
+			_ = streamSrv.Close()
+			_ = httpSrv.Close()
+			_ = tlsLn.Close()
+		})
+		go func() {
+			err := httpSrv.Serve(tlsLn)
+			if err != nil && !errors.Is(err, http.ErrServerClosed) {
+				log.Error().Err(err).Msg("agent HTTP server stopped with error")
+			}
+			subtask.Finish(err)
+		}()
+		log.Info().Int("port", env.AgentPort).Msg("HTTPS API server started (ALPN mux enabled)")
+	}
+	log.Info().Int("port", env.AgentPort).Msg("TCP stream handler started (via TLSNextProto)")
+
+	{
+		udpServer := stream.NewUDPServer(t.Context(), "udp", &net.UDPAddr{Port: env.AgentPort}, caCert.Leaf, srvCert)
+		subtask := t.Subtask("agent-stream-udp", true)
+		t.OnCancel("stop_stream_udp", func() {
+			_ = udpServer.Close()
+		})
+		go func() {
+			err := udpServer.Start()
+			subtask.Finish(err)
+		}()
+		log.Info().Int("port", env.AgentPort).Msg("UDP stream server started")
+	}
 
 	if socketproxy.ListenAddr != "" {
 		runtime := strutils.Title(string(env.Runtime))

agent/go.mod

@@ -1,14 +1,16 @@
 module github.com/yusing/godoxy/agent
 
-go 1.25.4
+go 1.25.5
 
-replace github.com/yusing/godoxy => ..
-
-replace github.com/yusing/godoxy/socketproxy => ../socket-proxy
-
-replace github.com/shirou/gopsutil/v4 => ../internal/gopsutil
-
-replace github.com/yusing/goutils => ../goutils
+replace (
+	github.com/shirou/gopsutil/v4 => ../internal/gopsutil
+	github.com/yusing/godoxy => ../
+	github.com/yusing/godoxy/socketproxy => ../socket-proxy
+	github.com/yusing/goutils => ../goutils
+	github.com/yusing/goutils/http/reverseproxy => ../goutils/http/reverseproxy
+	github.com/yusing/goutils/http/websocket => ../goutils/http/websocket
+	github.com/yusing/goutils/server => ../goutils/server
+)
 
 exclude github.com/containerd/nerdctl/mod/tigron v0.0.0
 
@@ -16,13 +18,14 @@ require (
 	github.com/bytedance/sonic v1.14.2
 	github.com/gin-gonic/gin v1.11.0
 	github.com/gorilla/websocket v1.5.3
-	github.com/puzpuzpuz/xsync/v4 v4.2.0
+	github.com/pion/dtls/v3 v3.0.10
+	github.com/pion/transport/v3 v3.1.1
 	github.com/rs/zerolog v1.34.0
 	github.com/stretchr/testify v1.11.1
-	github.com/valyala/fasthttp v1.68.0
-	github.com/yusing/godoxy v0.20.10
+	github.com/yusing/godoxy v0.0.0-00010101000000-000000000000
 	github.com/yusing/godoxy/socketproxy v0.0.0-00010101000000-000000000000
 	github.com/yusing/goutils v0.7.0
+	github.com/yusing/goutils/server v0.0.0-20260103043911-785deb23bd64
 )
 
 require (
@@ -33,28 +36,28 @@ require (
 	github.com/bytedance/gopkg v0.1.3 // indirect
 	github.com/bytedance/sonic/loader v0.4.0 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/containerd/errdefs v1.0.0 // indirect
 	github.com/containerd/errdefs/pkg v0.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/distribution/reference v0.6.0 // indirect
-	github.com/docker/cli v29.1.2+incompatible // indirect
+	github.com/docker/cli v29.1.3+incompatible // indirect
 	github.com/docker/go-connections v0.6.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.11 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.12 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.28.0 // indirect
+	github.com/go-playground/validator/v10 v10.30.1 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/goccy/go-yaml v1.19.0 // indirect
+	github.com/goccy/go-yaml v1.19.1 // indirect
 	github.com/gorilla/mux v1.8.1 // indirect
-	github.com/gotify/server/v2 v2.7.3 // indirect
 	github.com/json-iterator/go v1.1.13-0.20220915233716-71ac16282d12 // indirect
 	github.com/klauspost/compress v1.18.2 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
@@ -71,35 +74,41 @@ require (
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pion/logging v0.2.4 // indirect
+	github.com/pion/transport/v4 v4.0.1 // indirect
 	github.com/pires/go-proxyproto v0.8.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
+	github.com/puzpuzpuz/xsync/v4 v4.2.0 // indirect
 	github.com/quic-go/qpack v0.6.0 // indirect
-	github.com/quic-go/quic-go v0.57.1 // indirect
+	github.com/quic-go/quic-go v0.58.0 // indirect
 	github.com/samber/lo v1.52.0 // indirect
 	github.com/samber/slog-common v0.19.0 // indirect
 	github.com/samber/slog-zerolog/v2 v2.9.0 // indirect
-	github.com/shirou/gopsutil/v4 v4.25.11 // indirect
+	github.com/shirou/gopsutil/v4 v4.25.12 // indirect
 	github.com/sirupsen/logrus v1.9.4-0.20230606125235-dd1b4c2e81af // indirect
 	github.com/tklauser/go-sysconf v0.3.16 // indirect
 	github.com/tklauser/numcpus v0.11.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.3.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasthttp v1.68.0 // indirect
 	github.com/vincent-petithory/dataurl v1.0.0 // indirect
 	github.com/yusing/ds v0.3.1 // indirect
 	github.com/yusing/gointernals v0.1.16 // indirect
+	github.com/yusing/goutils/http/reverseproxy v0.0.0-20260103043911-785deb23bd64 // indirect
+	github.com/yusing/goutils/http/websocket v0.0.0-20260103043911-785deb23bd64 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0 // indirect
-	go.opentelemetry.io/otel v1.38.0 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0 // indirect
+	go.opentelemetry.io/otel v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	golang.org/x/arch v0.23.0 // indirect
-	golang.org/x/crypto v0.45.0 // indirect
-	golang.org/x/net v0.47.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
-	golang.org/x/text v0.31.0 // indirect
-	google.golang.org/protobuf v1.36.10 // indirect
+	golang.org/x/crypto v0.46.0 // indirect
+	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

agent/go.sum

@@ -16,6 +16,8 @@ github.com/bytedance/sonic/loader v0.4.0 h1:olZ7lEqcxtZygCK9EKYKADnpQoYkRQxaeY2N
 github.com/bytedance/sonic/loader v0.4.0/go.mod h1:AR4NYCk5DdzZizZ5djGqQ92eEhCCcdf5x77udYiSJRo=
 github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
 github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cloudwego/base64x v0.1.6 h1:t11wG9AECkCDk5fMSoxmufanudBtJ+/HemLstXDLI2M=
 github.com/cloudwego/base64x v0.1.6/go.mod h1:OFcloc187FXDaYHvrNIjxSe8ncn0OOM8gEHfghB2IPU=
 github.com/containerd/errdefs v1.0.0 h1:tg5yIfIlQIrxYtu9ajqY42W3lpS19XqdxRQeEwYG8PI=
@@ -35,8 +37,8 @@ github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5Qvfr
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
 github.com/djherbis/times v1.6.0 h1:w2ctJ92J8fBvWPxugmXIv7Nz7Q3iDMKNx9v5ocVH20c=
 github.com/djherbis/times v1.6.0/go.mod h1:gOHeRAz2h+VJNZ5Gmc/o7iD9k4wW7NMVqieYCY99oc0=
-github.com/docker/cli v29.1.2+incompatible h1:s4QI7drXpIo78OM+CwuthPsO5kCf8cpNsck5PsLVTH8=
-github.com/docker/cli v29.1.2+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
+github.com/docker/cli v29.1.3+incompatible h1:+kz9uDWgs+mAaIZojWfFt4d53/jv0ZUOOoSh5ZnH36c=
+github.com/docker/cli v29.1.3+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/go-connections v0.6.0 h1:LlMG9azAe1TqfR7sO+NJttz1gy6KO7VJBh+pMmjSD94=
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@@ -47,14 +49,14 @@ github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2
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@@ -71,14 +73,14 @@ github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/o
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@@ -92,8 +94,8 @@ github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
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@@ -112,8 +114,8 @@ github.com/lithammer/fuzzysearch v1.1.8 h1:/HIuJnjHuXS8bKaiTMeeDlW2/AyIWk2brx1V8
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@@ -123,8 +125,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
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@@ -144,6 +146,14 @@ github.com/oschwald/maxminddb-golang v1.13.1 h1:G3wwjdN9JmIK2o/ermkHM+98oX5fS+k5
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@@ -156,8 +166,8 @@ github.com/puzpuzpuz/xsync/v4 v4.2.0 h1:dlxm77dZj2c3rxq0/XNvvUKISAmovoXF4a4qM6Wv
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@@ -209,22 +219,22 @@ github.com/yusufpapurcu/wmi v1.2.4 h1:zFUKzehAFReQwLys1b/iSMl+JQGSCSjtVqQn9bBrPo
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 golang.org/x/arch v0.23.0 h1:lKF64A2jF6Zd8L0knGltUnegD62JMFBiCPBmQpToHhg=
 golang.org/x/arch v0.23.0/go.mod h1:dNHoOeKiyja7GTvF9NJS1l3Z2yntpQNzgrjh1cU103A=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -233,15 +243,15 @@ golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliY
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
-golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
-golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
+golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
+golang.org/x/crypto v0.46.0/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.30.0 h1:fDEXFVZ/fmCKProc/yAXXUijritrDzahmwwefnjoPFk=
-golang.org/x/mod v0.30.0/go.mod h1:lAsf5O2EvJeSFMiBxXDki7sCgAxEUcZHXoXMKT4GJKc=
+golang.org/x/mod v0.31.0 h1:HaW9xtz0+kOcWKwli0ZXy79Ix+UW/vOfmWI5QVd2tgI=
+golang.org/x/mod v0.31.0/go.mod h1:43JraMp9cGx1Rx3AqioxrbrhNsLl2l/iNAvuBkrezpg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
@@ -251,10 +261,10 @@ golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
-golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
-golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
-golang.org/x/oauth2 v0.33.0 h1:4Q+qn+E5z8gPRJfmRy7C2gGG3T4jIprK6aSYgTXGRpo=
-golang.org/x/oauth2 v0.33.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
+golang.org/x/net v0.48.0 h1:zyQRTTrjc33Lhh0fBgT/H3oZq9WuvRR5gPC70xpDiQU=
+golang.org/x/net v0.48.0/go.mod h1:+ndRgGjkh8FGtu1w1FGbEC31if4VrNVMuKTgcAAnQRY=
+golang.org/x/oauth2 v0.34.0 h1:hqK/t4AKgbqWkdkcAeI8XLmbK+4m4G5YeQRrmiotGlw=
+golang.org/x/oauth2 v0.34.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -262,8 +272,8 @@ golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
-golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -281,8 +291,8 @@ golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
-golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
+golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -301,8 +311,8 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
-golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
-golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
+golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
+golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=
 golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
 golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -311,11 +321,11 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
-golang.org/x/tools v0.39.0 h1:ik4ho21kwuQln40uelmciQPp9SipgNDdrafrYA4TmQQ=
-golang.org/x/tools v0.39.0/go.mod h1:JnefbkDPyD8UU2kI5fuf8ZX4/yUeh9W877ZeBONxUqQ=
+golang.org/x/tools v0.40.0 h1:yLkxfA+Qnul4cs9QA3KnlFu0lVmd8JJfoq+E41uSutA=
+golang.org/x/tools v0.40.0/go.mod h1:Ik/tzLRlbscWpqqMRjyWYDisX8bG13FrdXp3o4Sr9lc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
-google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

agent/pkg/agent/README.md

@@ -0,0 +1,108 @@
+# Agent Package
+
+The `agent` package provides the client-side implementation for interacting with GoDoxy agents. It handles agent configuration, secure communication via TLS, and provides utilities for agent deployment and management.
+
+## Architecture Overview
+
+```mermaid
+graph TD
+    subgraph GoDoxy Server
+        AP[Agent Pool] --> AC[AgentConfig]
+    end
+
+    subgraph Agent Communication
+        AC -->|HTTPS| AI[Agent Info API]
+        AC -->|TLS| ST[Stream Tunneling]
+    end
+
+    subgraph Deployment
+        G[Generator] --> DC[Docker Compose]
+        G --> IS[Install Script]
+    end
+
+    subgraph Security
+        NA[NewAgent] --> Certs[Certificates]
+    end
+```
+
+## File Structure
+
+| File                                                     | Purpose                                                   |
+| -------------------------------------------------------- | --------------------------------------------------------- |
+| [`config.go`](agent/pkg/agent/config.go)                 | Core configuration, initialization, and API client logic. |
+| [`new_agent.go`](agent/pkg/agent/new_agent.go)           | Agent creation and certificate generation logic.          |
+| [`docker_compose.go`](agent/pkg/agent/docker_compose.go) | Generator for agent Docker Compose configurations.        |
+| [`bare_metal.go`](agent/pkg/agent/bare_metal.go)         | Generator for bare metal installation scripts.            |
+| [`env.go`](agent/pkg/agent/env.go)                       | Environment configuration types and constants.            |
+| [`common/`](agent/pkg/agent/common)                      | Shared constants and utilities for agents.                |
+
+## Core Types
+
+### [`AgentConfig`](agent/pkg/agent/config.go:29)
+
+The primary struct used by the GoDoxy server to manage a connection to an agent. It stores the agent's address, metadata, and TLS configuration.
+
+### [`AgentInfo`](agent/pkg/agent/config.go:45)
+
+Contains basic metadata about the agent, including its version, name, and container runtime (Docker or Podman).
+
+### [`PEMPair`](agent/pkg/agent/new_agent.go:53)
+
+A utility struct for handling PEM-encoded certificate and key pairs, supporting encryption, decryption, and conversion to `tls.Certificate`.
+
+## Agent Creation and Certificate Management
+
+### Certificate Generation
+
+The [`NewAgent`](agent/pkg/agent/new_agent.go:147) function creates a complete certificate infrastructure for an agent:
+
+- **CA Certificate**: Self-signed root certificate with 1000-year validity.
+- **Server Certificate**: For the agent's HTTPS server, signed by the CA.
+- **Client Certificate**: For the GoDoxy server to authenticate with the agent.
+
+All certificates use ECDSA with P-256 curve and SHA-256 signatures.
+
+### Certificate Security
+
+- Certificates are encrypted using AES-GCM with a provided encryption key.
+- The [`PEMPair`](agent/pkg/agent/new_agent.go:53) struct provides methods for encryption, decryption, and conversion to `tls.Certificate`.
+- Base64 encoding is used for certificate storage and transmission.
+
+## Key Features
+
+### 1. Secure Communication
+
+All communication between the GoDoxy server and agents is secured using mutual TLS (mTLS). The [`AgentConfig`](agent/pkg/agent/config.go:29) handles the loading of CA and client certificates to establish secure connections.
+
+### 2. Agent Discovery and Initialization
+
+The [`Init`](agent/pkg/agent/config.go:231) and [`InitWithCerts`](agent/pkg/agent/config.go:110) methods allow the server to:
+
+- Fetch agent metadata (version, name, runtime).
+- Verify compatibility between server and agent versions.
+- Test support for TCP and UDP stream tunneling.
+
+### 3. Deployment Generators
+
+The package provides interfaces and implementations for generating deployment artifacts:
+
+- **Docker Compose**: Generates a `docker-compose.yml` for running the agent as a container via [`AgentComposeConfig.Generate()`](agent/pkg/agent/docker_compose.go:21).
+- **Bare Metal**: Generates a shell script to install and run the agent as a systemd service via [`AgentEnvConfig.Generate()`](agent/pkg/agent/bare_metal.go:27).
+
+### 4. Fake Docker Host
+
+The package supports a "fake" Docker host scheme (`agent://<addr>`) to identify containers managed by an agent, allowing the GoDoxy server to route requests appropriately. See [`IsDockerHostAgent`](agent/pkg/agent/config.go:90) and [`GetAgentAddrFromDockerHost`](agent/pkg/agent/config.go:94).
+
+## Usage Example
+
+```go
+cfg := &agent.AgentConfig{}
+cfg.Parse("192.168.1.100:8081")
+
+ctx := context.Background()
+if err := cfg.Init(ctx); err != nil {
+    log.Fatal(err)
+}
+
+fmt.Printf("Connected to agent: %s (Version: %s)\n", cfg.Name, cfg.Version)
+```

agent/pkg/agent/agent_pool.go

@@ -1,68 +0,0 @@
-package agent
-
-import (
-	"iter"
-	"os"
-	"strings"
-
-	"github.com/puzpuzpuz/xsync/v4"
-)
-
-var agentPool = xsync.NewMap[string, *AgentConfig](xsync.WithPresize(10))
-
-func init() {
-	if strings.HasSuffix(os.Args[0], ".test") {
-		agentPool.Store("test-agent", &AgentConfig{
-			Addr: "test-agent",
-		})
-	}
-}
-
-func GetAgent(agentAddrOrDockerHost string) (*AgentConfig, bool) {
-	if !IsDockerHostAgent(agentAddrOrDockerHost) {
-		return getAgentByAddr(agentAddrOrDockerHost)
-	}
-	return getAgentByAddr(GetAgentAddrFromDockerHost(agentAddrOrDockerHost))
-}
-
-func GetAgentByName(name string) (*AgentConfig, bool) {
-	for _, agent := range agentPool.Range {
-		if agent.Name == name {
-			return agent, true
-		}
-	}
-	return nil, false
-}
-
-func AddAgent(agent *AgentConfig) {
-	agentPool.Store(agent.Addr, agent)
-}
-
-func RemoveAgent(agent *AgentConfig) {
-	agentPool.Delete(agent.Addr)
-}
-
-func RemoveAllAgents() {
-	agentPool.Clear()
-}
-
-func ListAgents() []*AgentConfig {
-	agents := make([]*AgentConfig, 0, agentPool.Size())
-	for _, agent := range agentPool.Range {
-		agents = append(agents, agent)
-	}
-	return agents
-}
-
-func IterAgents() iter.Seq2[string, *AgentConfig] {
-	return agentPool.Range
-}
-
-func NumAgents() int {
-	return agentPool.Size()
-}
-
-func getAgentByAddr(addr string) (agent *AgentConfig, ok bool) {
-	agent, ok = agentPool.Load(addr)
-	return agent, ok
-}

agent/pkg/agent/common/common.go

@@ -0,0 +1,3 @@
+package common
+
+const CertsDNSName = "godoxy.agent"

agent/pkg/agent/config.go

@@ -4,8 +4,11 @@ import (
 	"context"
 	"crypto/tls"
 	"crypto/x509"
+	"encoding/json"
+	"encoding/pem"
 	"errors"
 	"fmt"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
@@ -15,33 +18,51 @@ import (
 
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"github.com/valyala/fasthttp"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
+	agentstream "github.com/yusing/godoxy/agent/pkg/agent/stream"
 	"github.com/yusing/godoxy/agent/pkg/certs"
+	gperr "github.com/yusing/goutils/errs"
+	httputils "github.com/yusing/goutils/http"
 	"github.com/yusing/goutils/version"
 )
 
 type AgentConfig struct {
-	Addr    string           `json:"addr"`
-	Name    string           `json:"name"`
-	Version version.Version  `json:"version" swaggertype:"string"`
-	Runtime ContainerRuntime `json:"runtime"`
+	AgentInfo
 
-	httpClient                *http.Client
-	fasthttpClientHealthCheck *fasthttp.Client
-	tlsConfig                 tls.Config
-	l                         zerolog.Logger
+	Addr                 string `json:"addr"`
+	IsTCPStreamSupported bool   `json:"supports_tcp_stream"`
+	IsUDPStreamSupported bool   `json:"supports_udp_stream"`
+
+	// for stream
+	caCert     *x509.Certificate
+	clientCert *tls.Certificate
+
+	tlsConfig tls.Config
+
+	l zerolog.Logger
 } // @name Agent
 
+type AgentInfo struct {
+	Version version.Version  `json:"version" swaggertype:"string"`
+	Name    string           `json:"name"`
+	Runtime ContainerRuntime `json:"runtime"`
+}
+
+// Deprecated. Replaced by EndpointInfo
 const (
-	EndpointVersion    = "/version"
-	EndpointName       = "/name"
-	EndpointRuntime    = "/runtime"
+	EndpointVersion = "/version"
+	EndpointName    = "/name"
+	EndpointRuntime = "/runtime"
+)
+
+const (
+	EndpointInfo       = "/info"
 	EndpointProxyHTTP  = "/proxy/http"
 	EndpointHealth     = "/health"
 	EndpointLogs       = "/logs"
 	EndpointSystemInfo = "/system_info"
 
-	AgentHost = CertsDNSName
+	AgentHost = common.CertsDNSName
 
 	APIEndpointBase = "/godoxy/agent"
 	APIBaseURL      = "https://" + AgentHost + APIEndpointBase
@@ -85,11 +106,13 @@ func (cfg *AgentConfig) Parse(addr string) error {
 
 var serverVersion = version.Get()
 
-func (cfg *AgentConfig) StartWithCerts(ctx context.Context, ca, crt, key []byte) error {
+// InitWithCerts initializes the agent config with the given CA, certificate, and key.
+func (cfg *AgentConfig) InitWithCerts(ctx context.Context, ca, crt, key []byte) error {
 	clientCert, err := tls.X509KeyPair(crt, key)
 	if err != nil {
 		return err
 	}
+	cfg.clientCert = &clientCert
 
 	// create tls config
 	caCertPool := x509.NewCertPool()
@@ -97,64 +120,105 @@ func (cfg *AgentConfig) StartWithCerts(ctx context.Context, ca, crt, key []byte)
 	if !ok {
 		return errors.New("invalid ca certificate")
 	}
+	// Keep the CA leaf for stream client dialing.
+	if block, _ := pem.Decode(ca); block == nil || block.Type != "CERTIFICATE" {
+		return errors.New("invalid ca certificate")
+	} else if cert, err := x509.ParseCertificate(block.Bytes); err != nil {
+		return err
+	} else {
+		cfg.caCert = cert
+	}
 
 	cfg.tlsConfig = tls.Config{
 		Certificates: []tls.Certificate{clientCert},
 		RootCAs:      caCertPool,
-		ServerName:   CertsDNSName,
+		ServerName:   common.CertsDNSName,
+		MinVersion:   tls.VersionTLS12,
 	}
 
-	// create transport and http client
-	cfg.httpClient = cfg.NewHTTPClient()
-	applyNormalTransportConfig(cfg.httpClient)
-
-	cfg.fasthttpClientHealthCheck = cfg.NewFastHTTPHealthCheckClient()
-
 	ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
 	defer cancel()
 
-	// get agent name
-	name, _, err := cfg.fetchString(ctx, EndpointName)
+	status, err := cfg.fetchJSON(ctx, EndpointInfo, &cfg.AgentInfo)
 	if err != nil {
 		return err
 	}
 
-	cfg.Name = name
+	var streamUnsupportedErrs gperr.Builder
+
+	if status == http.StatusOK {
+		// test stream server connection
+		const fakeAddress = "localhost:8080" // it won't be used, just for testing
+		// test TCP stream support
+		err := agentstream.TCPHealthCheck(cfg.Addr, cfg.caCert, cfg.clientCert)
+		if err != nil {
+			streamUnsupportedErrs.Addf("failed to connect to stream server via TCP: %w", err)
+		} else {
+			cfg.IsTCPStreamSupported = true
+		}
+
+		// test UDP stream support
+		err = agentstream.UDPHealthCheck(cfg.Addr, cfg.caCert, cfg.clientCert)
+		if err != nil {
+			streamUnsupportedErrs.Addf("failed to connect to stream server via UDP: %w", err)
+		} else {
+			cfg.IsUDPStreamSupported = true
+		}
+	} else {
+		// old agent does not support EndpointInfo
+		// fallback with old logic
+		cfg.IsTCPStreamSupported = false
+		cfg.IsUDPStreamSupported = false
+		streamUnsupportedErrs.Adds("agent version is too old, does not support stream tunneling")
+
+		// get agent name
+		name, _, err := cfg.fetchString(ctx, EndpointName)
+		if err != nil {
+			return err
+		}
+
+		cfg.Name = name
+
+		// check agent version
+		agentVersion, _, err := cfg.fetchString(ctx, EndpointVersion)
+		if err != nil {
+			return err
+		}
+
+		cfg.Version = version.Parse(agentVersion)
+
+		// check agent runtime
+		runtime, status, err := cfg.fetchString(ctx, EndpointRuntime)
+		if err != nil {
+			return err
+		}
+
+		switch status {
+		case http.StatusOK:
+			switch runtime {
+			case "docker":
+				cfg.Runtime = ContainerRuntimeDocker
+			// case "nerdctl":
+			// 	cfg.Runtime = ContainerRuntimeNerdctl
+			case "podman":
+				cfg.Runtime = ContainerRuntimePodman
+			default:
+				return fmt.Errorf("invalid agent runtime: %s", runtime)
+			}
+		case http.StatusNotFound:
+			// backward compatibility, old agent does not have runtime endpoint
+			cfg.Runtime = ContainerRuntimeDocker
+		default:
+			return fmt.Errorf("failed to get agent runtime: HTTP %d %s", status, runtime)
+		}
+	}
 
 	cfg.l = log.With().Str("agent", cfg.Name).Logger()
 
-	// check agent version
-	agentVersion, _, err := cfg.fetchString(ctx, EndpointVersion)
-	if err != nil {
-		return err
+	if err := streamUnsupportedErrs.Error(); err != nil {
+		gperr.LogWarn("agent has limited/no stream tunneling support, TCP and UDP routes via agent will not work", err, &cfg.l)
 	}
 
-	// check agent runtime
-	runtime, status, err := cfg.fetchString(ctx, EndpointRuntime)
-	if err != nil {
-		return err
-	}
-	switch status {
-	case http.StatusOK:
-		switch runtime {
-		case "docker":
-			cfg.Runtime = ContainerRuntimeDocker
-		// case "nerdctl":
-		// 	cfg.Runtime = ContainerRuntimeNerdctl
-		case "podman":
-			cfg.Runtime = ContainerRuntimePodman
-		default:
-			return fmt.Errorf("invalid agent runtime: %s", runtime)
-		}
-	case http.StatusNotFound:
-		// backward compatibility, old agent does not have runtime endpoint
-		cfg.Runtime = ContainerRuntimeDocker
-	default:
-		return fmt.Errorf("failed to get agent runtime: HTTP %d %s", status, runtime)
-	}
-
-	cfg.Version = version.Parse(agentVersion)
-
 	if serverVersion.IsNewerThanMajor(cfg.Version) {
 		log.Warn().Msgf("agent %s major version mismatch: server: %s, agent: %s", cfg.Name, serverVersion, cfg.Version)
 	}
@@ -163,7 +227,8 @@ func (cfg *AgentConfig) StartWithCerts(ctx context.Context, ca, crt, key []byte)
 	return nil
 }
 
-func (cfg *AgentConfig) Start(ctx context.Context) error {
+// Init initializes the agent config with the given context.
+func (cfg *AgentConfig) Init(ctx context.Context) error {
 	filepath, ok := certs.AgentCertsFilepath(cfg.Addr)
 	if !ok {
 		return fmt.Errorf("invalid agent host: %s", cfg.Addr)
@@ -179,32 +244,39 @@ func (cfg *AgentConfig) Start(ctx context.Context) error {
 		return fmt.Errorf("failed to extract agent certs: %w", err)
 	}
 
-	return cfg.StartWithCerts(ctx, ca, crt, key)
+	return cfg.InitWithCerts(ctx, ca, crt, key)
 }
 
-func (cfg *AgentConfig) NewHTTPClient() *http.Client {
-	return &http.Client{
-		Transport: cfg.Transport(),
+// NewTCPClient creates a new TCP client for the agent.
+//
+// It returns an error if
+//   - the agent is not initialized
+//   - the agent does not support TCP stream tunneling
+//   - the agent stream server address is not initialized
+func (cfg *AgentConfig) NewTCPClient(targetAddress string) (net.Conn, error) {
+	if cfg.caCert == nil || cfg.clientCert == nil {
+		return nil, errors.New("agent is not initialized")
 	}
+	if !cfg.IsTCPStreamSupported {
+		return nil, errors.New("agent does not support TCP stream tunneling")
+	}
+	return agentstream.NewTCPClient(cfg.Addr, targetAddress, cfg.caCert, cfg.clientCert)
 }
 
-func (cfg *AgentConfig) NewFastHTTPHealthCheckClient() *fasthttp.Client {
-	return &fasthttp.Client{
-		Dial: func(addr string) (net.Conn, error) {
-			if addr != AgentHost+":443" {
-				return nil, &net.AddrError{Err: "invalid address", Addr: addr}
-			}
-			return net.Dial("tcp", cfg.Addr)
-		},
-		TLSConfig:                     &cfg.tlsConfig,
-		ReadTimeout:                   5 * time.Second,
-		WriteTimeout:                  3 * time.Second,
-		DisableHeaderNamesNormalizing: true,
-		DisablePathNormalizing:        true,
-		NoDefaultUserAgentHeader:      true,
-		ReadBufferSize:                1024,
-		WriteBufferSize:               1024,
+// NewUDPClient creates a new UDP client for the agent.
+//
+// It returns an error if
+//   - the agent is not initialized
+//   - the agent does not support UDP stream tunneling
+//   - the agent stream server address is not initialized
+func (cfg *AgentConfig) NewUDPClient(targetAddress string) (net.Conn, error) {
+	if cfg.caCert == nil || cfg.clientCert == nil {
+		return nil, errors.New("agent is not initialized")
 	}
+	if !cfg.IsUDPStreamSupported {
+		return nil, errors.New("agent does not support UDP stream tunneling")
+	}
+	return agentstream.NewUDPClient(cfg.Addr, targetAddress, cfg.caCert, cfg.clientCert)
 }
 
 func (cfg *AgentConfig) Transport() *http.Transport {
@@ -222,6 +294,10 @@ func (cfg *AgentConfig) Transport() *http.Transport {
 	}
 }
 
+func (cfg *AgentConfig) TLSConfig() *tls.Config {
+	return &cfg.tlsConfig
+}
+
 var dialer = &net.Dialer{Timeout: 5 * time.Second}
 
 func (cfg *AgentConfig) DialContext(ctx context.Context) (net.Conn, error) {
@@ -232,10 +308,57 @@ func (cfg *AgentConfig) String() string {
 	return cfg.Name + "@" + cfg.Addr
 }
 
-func applyNormalTransportConfig(client *http.Client) {
-	transport := client.Transport.(*http.Transport)
-	transport.MaxIdleConns = 100
-	transport.MaxIdleConnsPerHost = 100
-	transport.ReadBufferSize = 16384
-	transport.WriteBufferSize = 16384
+func (cfg *AgentConfig) do(ctx context.Context, method, endpoint string, body io.Reader) (*http.Response, error) {
+	req, err := http.NewRequestWithContext(ctx, method, APIBaseURL+endpoint, body)
+	if err != nil {
+		return nil, err
+	}
+	client := http.Client{
+		Transport: cfg.Transport(),
+	}
+	return client.Do(req)
+}
+
+func (cfg *AgentConfig) fetchString(ctx context.Context, endpoint string) (string, int, error) {
+	resp, err := cfg.do(ctx, "GET", endpoint, nil)
+	if err != nil {
+		return "", 0, err
+	}
+	defer resp.Body.Close()
+
+	data, release, err := httputils.ReadAllBody(resp)
+	if err != nil {
+		return "", 0, err
+	}
+	ret := string(data)
+	release(data)
+	return ret, resp.StatusCode, nil
+}
+
+// fetchJSON fetches a JSON response from the agent and unmarshals it into the provided struct
+//
+// It will return the status code of the response, and error if any.
+// If the status code is not http.StatusOK, out will be unchanged but error will still be nil.
+func (cfg *AgentConfig) fetchJSON(ctx context.Context, endpoint string, out any) (int, error) {
+	resp, err := cfg.do(ctx, "GET", endpoint, nil)
+	if err != nil {
+		return 0, err
+	}
+	defer resp.Body.Close()
+
+	data, release, err := httputils.ReadAllBody(resp)
+	if err != nil {
+		return 0, err
+	}
+
+	defer release(data)
+	if resp.StatusCode != http.StatusOK {
+		return resp.StatusCode, nil
+	}
+
+	err = json.Unmarshal(data, out)
+	if err != nil {
+		return 0, err
+	}
+	return resp.StatusCode, nil
 }

agent/pkg/agent/new_agent.go

@@ -17,10 +17,8 @@ import (
 	"math/big"
 	"strings"
 	"time"
-)
 
-const (
-	CertsDNSName = "godoxy.agent"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
 )
 
 func toPEMPair(certDER []byte, key *ecdsa.PrivateKey) *PEMPair {
@@ -156,7 +154,7 @@ func NewAgent() (ca, srv, client *PEMPair, err error) {
 		SerialNumber: caSerialNumber,
 		Subject: pkix.Name{
 			Organization: []string{"GoDoxy"},
-			CommonName:   CertsDNSName,
+			CommonName:   common.CertsDNSName,
 		},
 		NotBefore:             time.Now(),
 		NotAfter:              time.Now().AddDate(1000, 0, 0), // 1000 years
@@ -196,9 +194,9 @@ func NewAgent() (ca, srv, client *PEMPair, err error) {
 		Subject: pkix.Name{
 			Organization:       caTemplate.Subject.Organization,
 			OrganizationalUnit: []string{"Server"},
-			CommonName:         CertsDNSName,
+			CommonName:         common.CertsDNSName,
 		},
-		DNSNames:           []string{CertsDNSName},
+		DNSNames:           []string{common.CertsDNSName},
 		NotBefore:          time.Now(),
 		NotAfter:           time.Now().AddDate(1000, 0, 0), // Add validity period
 		KeyUsage:           x509.KeyUsageDigitalSignature,
@@ -228,9 +226,9 @@ func NewAgent() (ca, srv, client *PEMPair, err error) {
 		Subject: pkix.Name{
 			Organization:       caTemplate.Subject.Organization,
 			OrganizationalUnit: []string{"Client"},
-			CommonName:         CertsDNSName,
+			CommonName:         common.CertsDNSName,
 		},
-		DNSNames:           []string{CertsDNSName},
+		DNSNames:           []string{common.CertsDNSName},
 		NotBefore:          time.Now(),
 		NotAfter:           time.Now().AddDate(1000, 0, 0),
 		KeyUsage:           x509.KeyUsageDigitalSignature,

agent/pkg/agent/new_agent_test.go

@@ -10,6 +10,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
 )
 
 func TestNewAgent(t *testing.T) {
@@ -72,7 +73,7 @@ func TestServerClient(t *testing.T) {
 	clientTLSConfig := &tls.Config{
 		Certificates: []tls.Certificate{*clientTLS},
 		RootCAs:      caPool,
-		ServerName:   CertsDNSName,
+		ServerName:   common.CertsDNSName,
 	}
 
 	server := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

agent/pkg/agent/stream/README.md

@@ -0,0 +1,197 @@
+# Stream proxy protocol
+
+This package implements a small header-based handshake that allows an authenticated client to request forwarding to a `(host, port)` destination. It supports both TCP-over-TLS and UDP-over-DTLS transports.
+
+## Overview
+
+```mermaid
+graph TD
+    subgraph Client
+        TC[TCPClient] -->|TLS| TSS[TCPServer]
+        UC[UDPClient] -->|DTLS| USS[UDPServer]
+    end
+
+    subgraph Stream Protocol
+        H[StreamRequestHeader]
+    end
+
+    TSS -->|Redirect| DST1[Destination TCP]
+    USS -->|Forward UDP| DST2[Destination UDP]
+```
+
+## Header
+
+The on-wire header is a fixed-size binary blob:
+
+- `Version` (8 bytes)
+- `HostLength` (1 byte)
+- `Host` (255 bytes, NUL padded)
+- `PortLength` (1 byte)
+- `Port` (5 bytes, NUL padded)
+- `Flag` (1 byte, protocol flags)
+- `Checksum` (4 bytes, big-endian CRC32)
+
+Total: `headerSize = 8 + 1 + 255 + 1 + 5 + 1 + 4 = 275` bytes.
+
+Checksum is `crc32.ChecksumIEEE(header[0:headerSize-4])`.
+
+### Flags
+
+The `Flag` field is a bitmask of protocol flags defined by `FlagType`:
+
+| Flag                   | Value | Purpose                                                                |
+| ---------------------- | ----- | ---------------------------------------------------------------------- |
+| `FlagCloseImmediately` | `1`   | Health check probe - server closes immediately after validating header |
+
+See [`FlagType`](header.go:26) and [`FlagCloseImmediately`](header.go:28).
+
+See [`StreamRequestHeader`](header.go:30).
+
+## File Structure
+
+| File                                | Purpose                                                      |
+| ----------------------------------- | ------------------------------------------------------------ |
+| [`header.go`](header.go)            | Stream request header structure and validation.              |
+| [`tcp_client.go`](tcp_client.go:12) | TCP client implementation with TLS transport.                |
+| [`tcp_server.go`](tcp_server.go:13) | TCP server implementation for handling stream requests.      |
+| [`udp_client.go`](udp_client.go:13) | UDP client implementation with DTLS transport.               |
+| [`udp_server.go`](udp_server.go:17) | UDP server implementation for handling DTLS stream requests. |
+| [`common.go`](common.go:11)         | Connection manager and shared constants.                     |
+
+## Constants
+
+| Constant               | Value                     | Purpose                                                 |
+| ---------------------- | ------------------------- | ------------------------------------------------------- |
+| `StreamALPN`           | `"godoxy-agent-stream/1"` | TLS ALPN protocol for stream multiplexing.              |
+| `headerSize`           | `275` bytes               | Total size of the stream request header.                |
+| `dialTimeout`          | `10s`                     | Timeout for establishing destination connections.       |
+| `readDeadline`         | `10s`                     | Read timeout for UDP destination sockets.               |
+| `FlagCloseImmediately` | `1`                       | Flag for health check probe - server closes immediately |
+
+See [`common.go`](common.go:11).
+
+## Public API
+
+### Types
+
+#### `StreamRequestHeader`
+
+Represents the on-wire protocol header used to negotiate a stream tunnel.
+
+```go
+type StreamRequestHeader struct {
+    Version     [8]byte  // Fixed to "0.1.0" with NUL padding
+    HostLength  byte     // Actual host name length (0-255)
+    Host        [255]byte // NUL-padded host name
+    PortLength  byte     // Actual port string length (0-5)
+    Port        [5]byte  // NUL-padded port string
+    Flag        FlagType // Protocol flags (e.g., FlagCloseImmediately)
+    Checksum    [4]byte  // CRC32 checksum of header without checksum
+}
+```
+
+**Methods:**
+
+- `NewStreamRequestHeader(host, port string) (*StreamRequestHeader, error)` - Creates a header for the given host and port. Returns error if host exceeds 255 bytes or port exceeds 5 bytes.
+- `NewStreamHealthCheckHeader() *StreamRequestHeader` - Creates a header with `FlagCloseImmediately` set for health check probes.
+- `Validate() bool` - Validates the version and checksum.
+- `GetHostPort() (string, string)` - Extracts the host and port from the header.
+- `ShouldCloseImmediately() bool` - Returns true if `FlagCloseImmediately` is set.
+
+### TCP Functions
+
+- [`NewTCPClient()`](tcp_client.go:26) - Creates a TLS client connection and sends the stream header.
+- [`NewTCPServerHandler()`](tcp_server.go:24) - Creates a handler for ALPN-multiplexed connections (no listener).
+- [`NewTCPServerFromListener()`](tcp_server.go:36) - Wraps an existing TLS listener.
+- [`NewTCPServer()`](tcp_server.go:45) - Creates a fully-configured TCP server with TLS listener.
+
+### UDP Functions
+
+- [`NewUDPClient()`](udp_client.go:27) - Creates a DTLS client connection and sends the stream header.
+- [`NewUDPServer()`](udp_server.go:26) - Creates a DTLS server listening on the given UDP address.
+
+## Health Check Probes
+
+The protocol supports health check probes using the `FlagCloseImmediately` flag. When a client sends a header with this flag set, the server validates the header and immediately closes the connection without establishing a destination tunnel.
+
+This is useful for:
+
+- Connectivity testing between agent and server
+- Verifying TLS/DTLS handshake and mTLS authentication
+- Monitoring stream protocol availability
+
+**Usage:**
+
+```go
+header := stream.NewStreamHealthCheckHeader()
+// Send header over TLS/DTLS connection
+// Server will validate and close immediately
+```
+
+Both TCP and UDP servers silently handle health check probes without logging errors.
+
+See [`NewStreamHealthCheckHeader()`](header.go:66) and [`FlagCloseImmediately`](header.go:28).
+
+## TCP behavior
+
+1. Client establishes a TLS connection to the stream server.
+2. Client sends exactly one header as a handshake.
+3. After the handshake, both sides proxy raw TCP bytes between client and destination.
+
+Server reads the header using `io.ReadFull` to avoid dropping bytes.
+
+See [`NewTCPClient()`](tcp_client.go:26) and [`(*TCPServer).redirect()`](tcp_server.go:116).
+
+## UDP-over-DTLS behavior
+
+1. Client establishes a DTLS connection to the stream server.
+2. Client sends exactly one header as a handshake.
+3. After the handshake, both sides proxy raw UDP datagrams:
+   - client -> destination: DTLS payload is written to destination `UDPConn`
+   - destination -> client: destination payload is written back to the DTLS connection
+
+Responses do **not** include a header.
+
+The UDP server uses a bidirectional forwarding model:
+
+- One goroutine forwards from client to destination
+- Another goroutine forwards from destination to client
+
+The destination reader uses `readDeadline` to periodically wake up and check for context cancellation. Timeouts do not terminate the session.
+
+See [`NewUDPClient()`](udp_client.go:27) and [`(*UDPServer).handleDTLSConnection()`](udp_server.go:89).
+
+## Connection Management
+
+Both `TCPServer` and `UDPServer` create a dedicated destination connection per incoming stream session and close it when the session ends (no destination connection reuse).
+
+## Error Handling
+
+| Error                 | Description                                     |
+| --------------------- | ----------------------------------------------- |
+| `ErrInvalidHeader`    | Header validation failed (version or checksum). |
+| `ErrCloseImmediately` | Health check probe - server closed immediately. |
+
+Errors from connection creation are propagated to the caller.
+
+See [`header.go`](header.go:23).
+
+## Integration
+
+This package is used by the agent to provide stream tunneling capabilities. See the parent [`agent`](../README.md) package for integration details with the GoDoxy server.
+
+### Certificate Requirements
+
+Both TCP and UDP servers require:
+
+- CA certificate for client verification
+- Server certificate for TLS/DTLS termination
+
+Both clients require:
+
+- CA certificate for server verification
+- Client certificate for mTLS authentication
+
+### ALPN Protocol
+
+The `StreamALPN` constant (`"godoxy-agent-stream/1"`) is used to multiplex stream tunnel traffic and HTTPS API traffic on the same port. Connections negotiating this ALPN are routed to the stream handler.

agent/pkg/agent/stream/common.go

@@ -0,0 +1,24 @@
+package stream
+
+import (
+	"time"
+
+	"github.com/pion/dtls/v3"
+	"github.com/yusing/goutils/synk"
+)
+
+const (
+	dialTimeout  = 10 * time.Second
+	readDeadline = 10 * time.Second
+)
+
+// StreamALPN is the TLS ALPN protocol id used to multiplex the TCP stream tunnel
+// and the HTTPS API on the same TCP port.
+//
+// When a client negotiates this ALPN, the agent will route the connection to the
+// stream tunnel handler instead of the HTTP handler.
+const StreamALPN = "godoxy-agent-stream/1"
+
+var dTLSCipherSuites = []dtls.CipherSuiteID{dtls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256}
+
+var sizedPool = synk.GetSizedBytesPool()

agent/pkg/agent/stream/header.go

@@ -0,0 +1,117 @@
+package stream
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"hash/crc32"
+	"reflect"
+	"unsafe"
+)
+
+const (
+	versionSize  = 8
+	hostSize     = 255
+	portSize     = 5
+	flagSize     = 1
+	checksumSize = 4 // crc32 checksum
+
+	headerSize = versionSize + 1 + hostSize + 1 + portSize + flagSize + checksumSize
+)
+
+var version = [versionSize]byte{'0', '.', '1', '.', '0', 0, 0, 0}
+
+var ErrInvalidHeader = errors.New("invalid header")
+var ErrCloseImmediately = errors.New("close immediately")
+
+type FlagType uint8
+
+const FlagCloseImmediately FlagType = 1 << iota
+
+type StreamRequestHeader struct {
+	Version [versionSize]byte
+
+	HostLength byte
+	Host       [hostSize]byte
+
+	PortLength byte
+	Port       [portSize]byte
+
+	Flag     FlagType
+	Checksum [checksumSize]byte
+}
+
+func init() {
+	if headerSize != reflect.TypeFor[StreamRequestHeader]().Size() {
+		panic("headerSize does not match the size of StreamRequestHeader")
+	}
+}
+
+func NewStreamRequestHeader(host, port string) (*StreamRequestHeader, error) {
+	if len(host) > hostSize {
+		return nil, fmt.Errorf("host is too long: max %d characters, got %d", hostSize, len(host))
+	}
+	if len(port) > portSize {
+		return nil, fmt.Errorf("port is too long: max %d characters, got %d", portSize, len(port))
+	}
+	header := &StreamRequestHeader{}
+	copy(header.Version[:], version[:])
+	header.HostLength = byte(len(host))
+	copy(header.Host[:], host)
+	header.PortLength = byte(len(port))
+	copy(header.Port[:], port)
+	header.updateChecksum()
+	return header, nil
+}
+
+func NewStreamHealthCheckHeader() *StreamRequestHeader {
+	header := &StreamRequestHeader{}
+	copy(header.Version[:], version[:])
+	header.Flag |= FlagCloseImmediately
+	header.updateChecksum()
+	return header
+}
+
+// ToHeader converts header byte array to a copy of itself as a StreamRequestHeader.
+func ToHeader(buf *[headerSize]byte) StreamRequestHeader {
+	return *(*StreamRequestHeader)(unsafe.Pointer(buf))
+}
+
+func (h *StreamRequestHeader) GetHostPort() (string, string) {
+	return string(h.Host[:h.HostLength]), string(h.Port[:h.PortLength])
+}
+
+func (h *StreamRequestHeader) Validate() bool {
+	if h.Version != version {
+		return false
+	}
+	if h.HostLength > hostSize {
+		return false
+	}
+	if h.PortLength > portSize {
+		return false
+	}
+	return h.validateChecksum()
+}
+
+func (h *StreamRequestHeader) ShouldCloseImmediately() bool {
+	return h.Flag&FlagCloseImmediately != 0
+}
+
+func (h *StreamRequestHeader) updateChecksum() {
+	checksum := crc32.ChecksumIEEE(h.BytesWithoutChecksum())
+	binary.BigEndian.PutUint32(h.Checksum[:], checksum)
+}
+
+func (h *StreamRequestHeader) validateChecksum() bool {
+	checksum := crc32.ChecksumIEEE(h.BytesWithoutChecksum())
+	return checksum == binary.BigEndian.Uint32(h.Checksum[:])
+}
+
+func (h *StreamRequestHeader) BytesWithoutChecksum() []byte {
+	return (*[headerSize - checksumSize]byte)(unsafe.Pointer(h))[:]
+}
+
+func (h *StreamRequestHeader) Bytes() []byte {
+	return (*[headerSize]byte)(unsafe.Pointer(h))[:]
+}

agent/pkg/agent/stream/payload_test.go

@@ -0,0 +1,26 @@
+package stream
+
+import (
+	"testing"
+)
+
+func TestStreamRequestHeader_RoundTripAndChecksum(t *testing.T) {
+	h, err := NewStreamRequestHeader("example.com", "443")
+	if err != nil {
+		t.Fatalf("NewStreamRequestHeader: %v", err)
+	}
+	if !h.Validate() {
+		t.Fatalf("expected header to validate")
+	}
+
+	var buf [headerSize]byte
+	copy(buf[:], h.Bytes())
+	h2 := ToHeader(&buf)
+	if !h2.Validate() {
+		t.Fatalf("expected round-tripped header to validate")
+	}
+	host, port := h2.GetHostPort()
+	if host != "example.com" || port != "443" {
+		t.Fatalf("unexpected host/port: %q:%q", host, port)
+	}
+}

agent/pkg/agent/stream/tcp_client.go

@@ -0,0 +1,122 @@
+package stream
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"net"
+	"time"
+
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
+)
+
+type TCPClient struct {
+	conn net.Conn
+}
+
+// NewTCPClient creates a new TCP client for the agent.
+//
+// It will establish a TLS connection and send a stream request header to the server.
+//
+// It returns an error if
+//   - the target address is invalid
+//   - the stream request header is invalid
+//   - the TLS configuration is invalid
+//   - the TLS connection fails
+//   - the stream request header is not sent
+func NewTCPClient(serverAddr, targetAddress string, caCert *x509.Certificate, clientCert *tls.Certificate) (net.Conn, error) {
+	host, port, err := net.SplitHostPort(targetAddress)
+	if err != nil {
+		return nil, err
+	}
+
+	header, err := NewStreamRequestHeader(host, port)
+	if err != nil {
+		return nil, err
+	}
+
+	return newTCPClientWIthHeader(serverAddr, header, caCert, clientCert)
+}
+
+func TCPHealthCheck(serverAddr string, caCert *x509.Certificate, clientCert *tls.Certificate) error {
+	header := NewStreamHealthCheckHeader()
+
+	conn, err := newTCPClientWIthHeader(serverAddr, header, caCert, clientCert)
+	if err != nil {
+		return err
+	}
+
+	conn.Close()
+	return nil
+}
+
+func newTCPClientWIthHeader(serverAddr string, header *StreamRequestHeader, caCert *x509.Certificate, clientCert *tls.Certificate) (net.Conn, error) {
+	// Setup TLS configuration
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(caCert)
+
+	tlsConfig := &tls.Config{
+		Certificates: []tls.Certificate{*clientCert},
+		RootCAs:      caCertPool,
+		MinVersion:   tls.VersionTLS12,
+		NextProtos:   []string{StreamALPN},
+		ServerName:   common.CertsDNSName,
+	}
+
+	// Establish TLS connection
+	conn, err := tls.DialWithDialer(&net.Dialer{Timeout: dialTimeout}, "tcp", serverAddr, tlsConfig)
+	if err != nil {
+		return nil, err
+	}
+	// Send the stream header once as a handshake.
+	if _, err := conn.Write(header.Bytes()); err != nil {
+		_ = conn.Close()
+		return nil, err
+	}
+
+	return &TCPClient{
+		conn: conn,
+	}, nil
+}
+
+func (c *TCPClient) Read(p []byte) (n int, err error) {
+	return c.conn.Read(p)
+}
+
+func (c *TCPClient) Write(p []byte) (n int, err error) {
+	return c.conn.Write(p)
+}
+
+func (c *TCPClient) LocalAddr() net.Addr {
+	return c.conn.LocalAddr()
+}
+
+func (c *TCPClient) RemoteAddr() net.Addr {
+	return c.conn.RemoteAddr()
+}
+
+func (c *TCPClient) SetDeadline(t time.Time) error {
+	return c.conn.SetDeadline(t)
+}
+
+func (c *TCPClient) SetReadDeadline(t time.Time) error {
+	return c.conn.SetReadDeadline(t)
+}
+
+func (c *TCPClient) SetWriteDeadline(t time.Time) error {
+	return c.conn.SetWriteDeadline(t)
+}
+
+func (c *TCPClient) Close() error {
+	return c.conn.Close()
+}
+
+// ConnectionState exposes the underlying TLS connection state when the client is
+// backed by *tls.Conn.
+//
+// This is primarily used by tests and diagnostics.
+func (c *TCPClient) ConnectionState() tls.ConnectionState {
+	if tc, ok := c.conn.(*tls.Conn); ok {
+		return tc.ConnectionState()
+	}
+	return tls.ConnectionState{}
+}

agent/pkg/agent/stream/tcp_server.go

@@ -0,0 +1,176 @@
+package stream
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"io"
+	"net"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	ioutils "github.com/yusing/goutils/io"
+)
+
+type TCPServer struct {
+	ctx      context.Context
+	listener net.Listener
+}
+
+// NewTCPServerHandler creates a TCP stream server that can serve already-accepted
+// connections (e.g. handed off by an ALPN multiplexer).
+//
+// This variant does not require a listener. Use TCPServer.ServeConn to handle
+// each incoming stream connection.
+func NewTCPServerHandler(ctx context.Context) *TCPServer {
+	s := &TCPServer{ctx: ctx}
+	return s
+}
+
+// NewTCPServerFromListener creates a TCP stream server from an already-prepared
+// listener.
+//
+// The listener is expected to yield connections that are already secured (e.g.
+// a TLS/mTLS listener, or pre-handshaked *tls.Conn). This is used when the agent
+// multiplexes HTTPS and stream-tunnel traffic on the same port.
+func NewTCPServerFromListener(ctx context.Context, listener net.Listener) *TCPServer {
+	s := &TCPServer{
+		ctx:      ctx,
+		listener: listener,
+	}
+	return s
+}
+
+func NewTCPServer(ctx context.Context, listener *net.TCPListener, caCert *x509.Certificate, serverCert *tls.Certificate) *TCPServer {
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(caCert)
+
+	tlsConfig := &tls.Config{
+		Certificates: []tls.Certificate{*serverCert},
+		ClientCAs:    caCertPool,
+		ClientAuth:   tls.RequireAndVerifyClientCert,
+		MinVersion:   tls.VersionTLS12,
+		NextProtos:   []string{StreamALPN},
+	}
+
+	tcpListener := tls.NewListener(listener, tlsConfig)
+	return NewTCPServerFromListener(ctx, tcpListener)
+}
+
+func (s *TCPServer) Start() error {
+	if s.listener == nil {
+		return net.ErrClosed
+	}
+	context.AfterFunc(s.ctx, func() {
+		_ = s.listener.Close()
+	})
+	for {
+		conn, err := s.listener.Accept()
+		if err != nil {
+			if errors.Is(err, net.ErrClosed) && s.ctx.Err() != nil {
+				return s.ctx.Err()
+			}
+			return err
+		}
+		go s.handle(conn)
+	}
+}
+
+// ServeConn serves a single stream connection.
+//
+// The provided connection is expected to be already secured (TLS/mTLS) and to
+// speak the stream protocol (i.e. the client will send the stream header first).
+//
+// This method blocks until the stream finishes.
+func (s *TCPServer) ServeConn(conn net.Conn) {
+	s.handle(conn)
+}
+
+func (s *TCPServer) Addr() net.Addr {
+	if s.listener == nil {
+		return nil
+	}
+	return s.listener.Addr()
+}
+
+func (s *TCPServer) Close() error {
+	if s.listener == nil {
+		return nil
+	}
+	return s.listener.Close()
+}
+
+func (s *TCPServer) logger(clientConn net.Conn) *zerolog.Logger {
+	ev := log.With().Str("protocol", "tcp").
+		Str("remote", clientConn.RemoteAddr().String())
+	if s.listener != nil {
+		ev = ev.Str("addr", s.listener.Addr().String())
+	}
+	l := ev.Logger()
+	return &l
+}
+
+func (s *TCPServer) loggerWithDst(dstConn net.Conn, clientConn net.Conn) *zerolog.Logger {
+	ev := log.With().Str("protocol", "tcp").
+		Str("remote", clientConn.RemoteAddr().String()).
+		Str("dst", dstConn.RemoteAddr().String())
+	if s.listener != nil {
+		ev = ev.Str("addr", s.listener.Addr().String())
+	}
+	l := ev.Logger()
+	return &l
+}
+
+func (s *TCPServer) handle(conn net.Conn) {
+	defer conn.Close()
+	dst, err := s.redirect(conn)
+	if err != nil {
+		// Health check probe: close connection
+		if errors.Is(err, ErrCloseImmediately) {
+			s.logger(conn).Info().Msg("Health check received")
+			return
+		}
+		s.logger(conn).Err(err).Msg("failed to redirect connection")
+		return
+	}
+
+	defer dst.Close()
+	pipe := ioutils.NewBidirectionalPipe(s.ctx, conn, dst)
+	err = pipe.Start()
+	if err != nil {
+		s.loggerWithDst(dst, conn).Err(err).Msg("failed to start bidirectional pipe")
+		return
+	}
+}
+
+func (s *TCPServer) redirect(conn net.Conn) (net.Conn, error) {
+	// Read the stream header once as a handshake.
+	var headerBuf [headerSize]byte
+	if _, err := io.ReadFull(conn, headerBuf[:]); err != nil {
+		return nil, err
+	}
+
+	header := ToHeader(&headerBuf)
+	if !header.Validate() {
+		return nil, ErrInvalidHeader
+	}
+
+	// Health check: close immediately if FlagCloseImmediately is set
+	if header.ShouldCloseImmediately() {
+		return nil, ErrCloseImmediately
+	}
+
+	// get destination connection
+	host, port := header.GetHostPort()
+	return s.createDestConnection(host, port)
+}
+
+func (s *TCPServer) createDestConnection(host, port string) (net.Conn, error) {
+	addr := net.JoinHostPort(host, port)
+	conn, err := net.DialTimeout("tcp", addr, dialTimeout)
+	if err != nil {
+		return nil, err
+	}
+	return conn, nil
+}

agent/pkg/agent/stream/tests/healthcheck_test.go

@@ -0,0 +1,26 @@
+package stream_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/agent/pkg/agent/stream"
+)
+
+func TestTCPHealthCheck(t *testing.T) {
+	certs := genTestCerts(t)
+
+	srv := startTCPServer(t, certs)
+
+	err := stream.TCPHealthCheck(srv.Addr.String(), certs.CaCert, certs.ClientCert)
+	require.NoError(t, err, "health check")
+}
+
+func TestUDPHealthCheck(t *testing.T) {
+	certs := genTestCerts(t)
+
+	srv := startUDPServer(t, certs)
+
+	err := stream.UDPHealthCheck(srv.Addr.String(), certs.CaCert, certs.ClientCert)
+	require.NoError(t, err, "health check")
+}

agent/pkg/agent/stream/tests/mux_test.go

@@ -0,0 +1,94 @@
+package stream_test
+
+import (
+	"bufio"
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"io"
+	"net"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
+	"github.com/yusing/godoxy/agent/pkg/agent/stream"
+)
+
+func TestTLSALPNMux_HTTPAndStreamShareOnePort(t *testing.T) {
+	certs := genTestCerts(t)
+
+	baseLn, err := net.ListenTCP("tcp", &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
+	require.NoError(t, err, "listen tcp")
+	defer baseLn.Close()
+	baseAddr := baseLn.Addr().String()
+
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(certs.CaCert)
+
+	serverTLS := &tls.Config{
+		Certificates: []tls.Certificate{*certs.SrvCert},
+		ClientCAs:    caCertPool,
+		ClientAuth:   tls.RequireAndVerifyClientCert,
+		MinVersion:   tls.VersionTLS12,
+		NextProtos:   []string{"http/1.1", stream.StreamALPN},
+	}
+
+	ctx, cancel := context.WithCancel(t.Context())
+	defer cancel()
+
+	streamSrv := stream.NewTCPServerHandler(ctx)
+	defer func() { _ = streamSrv.Close() }()
+
+	tlsLn := tls.NewListener(baseLn, serverTLS)
+	defer func() { _ = tlsLn.Close() }()
+
+	// HTTP server
+	httpSrv := &http.Server{Handler: http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		_, _ = w.Write([]byte("ok"))
+	}),
+		TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){
+			stream.StreamALPN: func(_ *http.Server, conn *tls.Conn, _ http.Handler) {
+				streamSrv.ServeConn(conn)
+			},
+		},
+	}
+	go func() { _ = httpSrv.Serve(tlsLn) }()
+	defer func() { _ = httpSrv.Close() }()
+
+	// Stream destination
+	dstAddr, closeDst := startTCPEcho(t)
+	defer closeDst()
+
+	// HTTP client over the same port
+	clientTLS := &tls.Config{
+		Certificates: []tls.Certificate{*certs.ClientCert},
+		RootCAs:      caCertPool,
+		MinVersion:   tls.VersionTLS12,
+		NextProtos:   []string{"http/1.1"},
+		ServerName:   common.CertsDNSName,
+	}
+	hc, err := tls.Dial("tcp", baseAddr, clientTLS)
+	require.NoError(t, err, "dial https")
+	defer hc.Close()
+	_ = hc.SetDeadline(time.Now().Add(2 * time.Second))
+	_, err = hc.Write([]byte("GET / HTTP/1.1\r\nHost: godoxy-agent\r\n\r\n"))
+	require.NoError(t, err, "write http request")
+	r := bufio.NewReader(hc)
+	statusLine, err := r.ReadString('\n')
+	require.NoError(t, err, "read status line")
+	require.Contains(t, statusLine, "200", "expected 200")
+
+	// Stream client over the same port
+	client := NewTCPClient(t, baseAddr, dstAddr, certs)
+	defer client.Close()
+	_ = client.SetDeadline(time.Now().Add(2 * time.Second))
+	msg := []byte("ping over mux")
+	_, err = client.Write(msg)
+	require.NoError(t, err, "write stream payload")
+	buf := make([]byte, len(msg))
+	_, err = io.ReadFull(client, buf)
+	require.NoError(t, err, "read stream payload")
+	require.Equal(t, msg, buf)
+}

agent/pkg/agent/stream/tests/server_flow_test.go

@@ -0,0 +1,201 @@
+package stream_test
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/pion/dtls/v3"
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/agent/stream"
+)
+
+func TestTCPServer_FullFlow(t *testing.T) {
+	certs := genTestCerts(t)
+
+	dstAddr, closeDst := startTCPEcho(t)
+	defer closeDst()
+
+	srv := startTCPServer(t, certs)
+
+	client := NewTCPClient(t, srv.Addr.String(), dstAddr, certs)
+	defer client.Close()
+
+	// Ensure ALPN is negotiated as expected (required for multiplexing).
+	withState, ok := client.(interface{ ConnectionState() tls.ConnectionState })
+	require.True(t, ok, "tcp client should expose TLS connection state")
+	require.Equal(t, stream.StreamALPN, withState.ConnectionState().NegotiatedProtocol)
+
+	_ = client.SetDeadline(time.Now().Add(2 * time.Second))
+	msg := []byte("ping over tcp")
+	_, err := client.Write(msg)
+	require.NoError(t, err, "write to client")
+
+	buf := make([]byte, len(msg))
+	_, err = io.ReadFull(client, buf)
+	require.NoError(t, err, "read from client")
+	require.Equal(t, string(msg), string(buf), "unexpected echo")
+}
+
+func TestTCPServer_ConcurrentConnections(t *testing.T) {
+	certs := genTestCerts(t)
+
+	dstAddr, closeDst := startTCPEcho(t)
+	defer closeDst()
+
+	srv := startTCPServer(t, certs)
+
+	const nClients = 25
+
+	errs := make(chan error, nClients)
+	var wg sync.WaitGroup
+	wg.Add(nClients)
+
+	for i := range nClients {
+		go func() {
+			defer wg.Done()
+
+			client := NewTCPClient(t, srv.Addr.String(), dstAddr, certs)
+			defer client.Close()
+
+			_ = client.SetDeadline(time.Now().Add(2 * time.Second))
+			msg := fmt.Appendf(nil, "ping over tcp %d", i)
+			if _, err := client.Write(msg); err != nil {
+				errs <- fmt.Errorf("write to client: %w", err)
+				return
+			}
+
+			buf := make([]byte, len(msg))
+			if _, err := io.ReadFull(client, buf); err != nil {
+				errs <- fmt.Errorf("read from client: %w", err)
+				return
+			}
+			if string(msg) != string(buf) {
+				errs <- fmt.Errorf("unexpected echo: got=%q want=%q", string(buf), string(msg))
+				return
+			}
+		}()
+	}
+
+	wg.Wait()
+	close(errs)
+	for err := range errs {
+		require.NoError(t, err)
+	}
+}
+
+func TestUDPServer_RejectInvalidClient(t *testing.T) {
+	certs := genTestCerts(t)
+
+	// Generate a self-signed client cert that is NOT signed by the CA
+	_, _, invalidClientPEM, err := agent.NewAgent()
+	require.NoError(t, err, "generate invalid client certs")
+	invalidClientCert, err := invalidClientPEM.ToTLSCert()
+	require.NoError(t, err, "parse invalid client cert")
+
+	dstAddr, closeDst := startUDPEcho(t)
+	defer closeDst()
+
+	srv := startUDPServer(t, certs)
+
+
+	// Try to connect with a client cert from a different CA
+	_, err = stream.NewUDPClient(srv.Addr.String(), dstAddr, certs.CaCert, invalidClientCert)
+	require.Error(t, err, "expected error when connecting with client cert from different CA")
+
+	var handshakeErr *dtls.HandshakeError
+	require.ErrorAs(t, err, &handshakeErr, "expected handshake error")
+}
+
+func TestUDPServer_RejectClientWithoutCert(t *testing.T) {
+	certs := genTestCerts(t)
+
+	dstAddr, closeDst := startUDPEcho(t)
+	defer closeDst()
+
+	srv := startUDPServer(t, certs)
+
+	time.Sleep(time.Second)
+
+	// Try to connect without any client certificate
+	// Create a TLS cert without a private key to simulate no client cert
+	emptyCert := &tls.Certificate{}
+	_, err := stream.NewUDPClient(srv.Addr.String(), dstAddr, certs.CaCert, emptyCert)
+	require.Error(t, err, "expected error when connecting without client cert")
+
+	require.ErrorContains(t, err, "no certificate provided", "expected no cert error")
+}
+
+func TestUDPServer_FullFlow(t *testing.T) {
+	certs := genTestCerts(t)
+
+	dstAddr, closeDst := startUDPEcho(t)
+	defer closeDst()
+
+	srv := startUDPServer(t, certs)
+
+	client := NewUDPClient(t, srv.Addr.String(), dstAddr, certs)
+	defer client.Close()
+
+	_ = client.SetDeadline(time.Now().Add(2 * time.Second))
+	msg := []byte("ping over udp")
+	_, err := client.Write(msg)
+	require.NoError(t, err, "write to client")
+
+	buf := make([]byte, 2048)
+	n, err := client.Read(buf)
+	require.NoError(t, err, "read from client")
+	require.Equal(t, string(msg), string(buf[:n]), "unexpected echo")
+}
+
+func TestUDPServer_ConcurrentConnections(t *testing.T) {
+	certs := genTestCerts(t)
+
+	dstAddr, closeDst := startUDPEcho(t)
+	defer closeDst()
+
+	srv := startUDPServer(t, certs)
+
+	const nClients = 25
+
+	errs := make(chan error, nClients)
+	var wg sync.WaitGroup
+	wg.Add(nClients)
+
+	for i := range nClients {
+		go func() {
+			defer wg.Done()
+
+			client := NewUDPClient(t, srv.Addr.String(), dstAddr, certs)
+			defer client.Close()
+
+			_ = client.SetDeadline(time.Now().Add(5 * time.Second))
+			msg := fmt.Appendf(nil, "ping over udp %d", i)
+			if _, err := client.Write(msg); err != nil {
+				errs <- fmt.Errorf("write to client: %w", err)
+				return
+			}
+
+			buf := make([]byte, 2048)
+			n, err := client.Read(buf)
+			if err != nil {
+				errs <- fmt.Errorf("read from client: %w", err)
+				return
+			}
+			if string(msg) != string(buf[:n]) {
+				errs <- fmt.Errorf("unexpected echo: got=%q want=%q", string(buf[:n]), string(msg))
+				return
+			}
+		}()
+	}
+
+	wg.Wait()
+	close(errs)
+	for err := range errs {
+		require.NoError(t, err)
+	}
+}

agent/pkg/agent/stream/tests/testutils_test.go

@@ -0,0 +1,177 @@
+package stream_test
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"io"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/pion/transport/v3/udp"
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/agent/stream"
+)
+
+// CertBundle holds all certificates needed for testing.
+type CertBundle struct {
+	CaCert     *x509.Certificate
+	SrvCert    *tls.Certificate
+	ClientCert *tls.Certificate
+}
+
+// genTestCerts generates certificates for testing and returns them as a CertBundle.
+func genTestCerts(t *testing.T) CertBundle {
+	t.Helper()
+
+	caPEM, srvPEM, clientPEM, err := agent.NewAgent()
+	require.NoError(t, err, "generate agent certs")
+
+	caCert, err := caPEM.ToTLSCert()
+	require.NoError(t, err, "parse CA cert")
+	srvCert, err := srvPEM.ToTLSCert()
+	require.NoError(t, err, "parse server cert")
+	clientCert, err := clientPEM.ToTLSCert()
+	require.NoError(t, err, "parse client cert")
+
+	return CertBundle{
+		CaCert:     caCert.Leaf,
+		SrvCert:    srvCert,
+		ClientCert: clientCert,
+	}
+}
+
+// startTCPEcho starts a TCP echo server and returns its address and close function.
+func startTCPEcho(t *testing.T) (addr string, closeFn func()) {
+	t.Helper()
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err, "listen tcp")
+
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for {
+			c, err := ln.Accept()
+			if err != nil {
+				return
+			}
+			go func(conn net.Conn) {
+				defer conn.Close()
+				_, _ = io.Copy(conn, conn)
+			}(c)
+		}
+	}()
+
+	return ln.Addr().String(), func() {
+		_ = ln.Close()
+		<-done
+	}
+}
+
+// startUDPEcho starts a UDP echo server and returns its address and close function.
+func startUDPEcho(t *testing.T) (addr string, closeFn func()) {
+	t.Helper()
+	pc, err := net.ListenPacket("udp", "127.0.0.1:0")
+	require.NoError(t, err, "listen udp")
+	uc := pc.(*net.UDPConn)
+
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		buf := make([]byte, 65535)
+		for {
+			n, raddr, err := uc.ReadFromUDP(buf)
+			if err != nil {
+				return
+			}
+			_, _ = uc.WriteToUDP(buf[:n], raddr)
+		}
+	}()
+
+	return uc.LocalAddr().String(), func() {
+		_ = uc.Close()
+		<-done
+	}
+}
+
+// TestServer wraps a server with its startup goroutine for cleanup.
+type TestServer struct {
+	Server interface{ Close() error }
+	Addr   net.Addr
+}
+
+// startTCPServer starts a TCP server and returns a TestServer for cleanup.
+func startTCPServer(t *testing.T, certs CertBundle) TestServer {
+	t.Helper()
+
+	tcpLn, err := net.ListenTCP("tcp", &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0})
+	require.NoError(t, err, "listen tcp")
+
+	ctx, cancel := context.WithCancel(t.Context())
+
+	srv := stream.NewTCPServer(ctx, tcpLn, certs.CaCert, certs.SrvCert)
+
+	errCh := make(chan error, 1)
+	go func() { errCh <- srv.Start() }()
+
+	t.Cleanup(func() {
+		cancel()
+		_ = srv.Close()
+		err := <-errCh
+		if err != nil && !errors.Is(err, context.Canceled) && !errors.Is(err, net.ErrClosed) {
+			t.Logf("tcp server exit: %v", err)
+		}
+	})
+
+	return TestServer{
+		Server: srv,
+		Addr:   srv.Addr(),
+	}
+}
+
+// startUDPServer starts a UDP server and returns a TestServer for cleanup.
+func startUDPServer(t *testing.T, certs CertBundle) TestServer {
+	t.Helper()
+
+	ctx, cancel := context.WithCancel(t.Context())
+
+	srv := stream.NewUDPServer(ctx, "udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 0}, certs.CaCert, certs.SrvCert)
+
+	errCh := make(chan error, 1)
+	go func() { errCh <- srv.Start() }()
+
+	time.Sleep(100 * time.Millisecond)
+
+	t.Cleanup(func() {
+		cancel()
+		_ = srv.Close()
+		err := <-errCh
+		if err != nil && !errors.Is(err, context.Canceled) && !errors.Is(err, net.ErrClosed) && !errors.Is(err, udp.ErrClosedListener) {
+			t.Logf("udp server exit: %v", err)
+		}
+	})
+
+	return TestServer{
+		Server: srv,
+		Addr:   srv.Addr(),
+	}
+}
+
+// NewTCPClient creates a TCP client connected to the server with test certificates.
+func NewTCPClient(t *testing.T, serverAddr, targetAddress string, certs CertBundle) net.Conn {
+	t.Helper()
+	client, err := stream.NewTCPClient(serverAddr, targetAddress, certs.CaCert, certs.ClientCert)
+	require.NoError(t, err, "create tcp client")
+	return client
+}
+
+// NewUDPClient creates a UDP client connected to the server with test certificates.
+func NewUDPClient(t *testing.T, serverAddr, targetAddress string, certs CertBundle) net.Conn {
+	t.Helper()
+	client, err := stream.NewUDPClient(serverAddr, targetAddress, certs.CaCert, certs.ClientCert)
+	require.NoError(t, err, "create udp client")
+	return client
+}

agent/pkg/agent/stream/udp_client.go

@@ -0,0 +1,118 @@
+package stream
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"net"
+	"time"
+
+	"github.com/pion/dtls/v3"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
+)
+
+type UDPClient struct {
+	conn net.Conn
+}
+
+// NewUDPClient creates a new UDP client for the agent.
+//
+// It will establish a DTLS connection and send a stream request header to the server.
+//
+// It returns an error if
+//   - the target address is invalid
+//   - the stream request header is invalid
+//   - the DTLS configuration is invalid
+//   - the DTLS connection fails
+//   - the stream request header is not sent
+func NewUDPClient(serverAddr, targetAddress string, caCert *x509.Certificate, clientCert *tls.Certificate) (net.Conn, error) {
+	host, port, err := net.SplitHostPort(targetAddress)
+	if err != nil {
+		return nil, err
+	}
+
+	header, err := NewStreamRequestHeader(host, port)
+	if err != nil {
+		return nil, err
+	}
+
+	return newUDPClientWIthHeader(serverAddr, header, caCert, clientCert)
+}
+
+func newUDPClientWIthHeader(serverAddr string, header *StreamRequestHeader, caCert *x509.Certificate, clientCert *tls.Certificate) (net.Conn, error) {
+	// Setup DTLS configuration
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(caCert)
+
+	dtlsConfig := &dtls.Config{
+		Certificates:         []tls.Certificate{*clientCert},
+		RootCAs:              caCertPool,
+		InsecureSkipVerify:   false,
+		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
+		ServerName:           common.CertsDNSName,
+		CipherSuites:         dTLSCipherSuites,
+	}
+
+	raddr, err := net.ResolveUDPAddr("udp", serverAddr)
+	if err != nil {
+		return nil, err
+	}
+
+	// Establish DTLS connection
+	conn, err := dtls.Dial("udp", raddr, dtlsConfig)
+	if err != nil {
+		return nil, err
+	}
+	// Send the stream header once as a handshake.
+	if _, err := conn.Write(header.Bytes()); err != nil {
+		_ = conn.Close()
+		return nil, err
+	}
+
+	return &UDPClient{
+		conn: conn,
+	}, nil
+}
+
+func UDPHealthCheck(serverAddr string, caCert *x509.Certificate, clientCert *tls.Certificate) error {
+	header := NewStreamHealthCheckHeader()
+
+	conn, err := newUDPClientWIthHeader(serverAddr, header, caCert, clientCert)
+	if err != nil {
+		return err
+	}
+
+	conn.Close()
+	return nil
+}
+
+func (c *UDPClient) Read(p []byte) (n int, err error) {
+	return c.conn.Read(p)
+}
+
+func (c *UDPClient) Write(p []byte) (n int, err error) {
+	return c.conn.Write(p)
+}
+
+func (c *UDPClient) LocalAddr() net.Addr {
+	return c.conn.LocalAddr()
+}
+
+func (c *UDPClient) RemoteAddr() net.Addr {
+	return c.conn.RemoteAddr()
+}
+
+func (c *UDPClient) SetDeadline(t time.Time) error {
+	return c.conn.SetDeadline(t)
+}
+
+func (c *UDPClient) SetReadDeadline(t time.Time) error {
+	return c.conn.SetReadDeadline(t)
+}
+
+func (c *UDPClient) SetWriteDeadline(t time.Time) error {
+	return c.conn.SetWriteDeadline(t)
+}
+
+func (c *UDPClient) Close() error {
+	return c.conn.Close()
+}

agent/pkg/agent/stream/udp_server.go

@@ -0,0 +1,205 @@
+package stream
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"io"
+	"net"
+	"time"
+
+	"github.com/pion/dtls/v3"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+type UDPServer struct {
+	ctx      context.Context
+	network  string
+	laddr    *net.UDPAddr
+	listener net.Listener
+
+	dtlsConfig *dtls.Config
+}
+
+func NewUDPServer(ctx context.Context, network string, laddr *net.UDPAddr, caCert *x509.Certificate, serverCert *tls.Certificate) *UDPServer {
+	caCertPool := x509.NewCertPool()
+	caCertPool.AddCert(caCert)
+
+	dtlsConfig := &dtls.Config{
+		Certificates:         []tls.Certificate{*serverCert},
+		ClientCAs:            caCertPool,
+		ClientAuth:           dtls.RequireAndVerifyClientCert,
+		ExtendedMasterSecret: dtls.RequireExtendedMasterSecret,
+		CipherSuites:         dTLSCipherSuites,
+	}
+
+	s := &UDPServer{
+		ctx:        ctx,
+		network:    network,
+		laddr:      laddr,
+		dtlsConfig: dtlsConfig,
+	}
+	return s
+}
+
+func (s *UDPServer) Start() error {
+	listener, err := dtls.Listen(s.network, s.laddr, s.dtlsConfig)
+	if err != nil {
+		return err
+	}
+	s.listener = listener
+
+	context.AfterFunc(s.ctx, func() {
+		_ = s.listener.Close()
+	})
+
+	for {
+		conn, err := s.listener.Accept()
+		if err != nil {
+			// Expected error when context cancelled
+			if errors.Is(err, net.ErrClosed) && s.ctx.Err() != nil {
+				return s.ctx.Err()
+			}
+			return err
+		}
+		go s.handleDTLSConnection(conn)
+	}
+}
+
+func (s *UDPServer) Addr() net.Addr {
+	if s.listener != nil {
+		return s.listener.Addr()
+	}
+	return s.laddr
+}
+
+func (s *UDPServer) Close() error {
+	if s.listener != nil {
+		return s.listener.Close()
+	}
+	return nil
+}
+
+func (s *UDPServer) logger(clientConn net.Conn) *zerolog.Logger {
+	l := log.With().Str("protocol", "udp").
+		Str("addr", s.Addr().String()).
+		Str("remote", clientConn.RemoteAddr().String()).Logger()
+	return &l
+}
+
+func (s *UDPServer) loggerWithDst(clientConn net.Conn, dstConn *net.UDPConn) *zerolog.Logger {
+	l := log.With().Str("protocol", "udp").
+		Str("addr", s.Addr().String()).
+		Str("remote", clientConn.RemoteAddr().String()).
+		Str("dst", dstConn.RemoteAddr().String()).Logger()
+	return &l
+}
+
+func (s *UDPServer) handleDTLSConnection(clientConn net.Conn) {
+	defer clientConn.Close()
+
+	// Read the stream header once as a handshake.
+	var headerBuf [headerSize]byte
+	if _, err := io.ReadFull(clientConn, headerBuf[:]); err != nil {
+		s.logger(clientConn).Err(err).Msg("failed to read stream header")
+		return
+	}
+	header := ToHeader(&headerBuf)
+	if !header.Validate() {
+		s.logger(clientConn).Error().Bytes("header", headerBuf[:]).Msg("invalid stream header received")
+		return
+	}
+
+	// Health check probe: close connection
+	if header.ShouldCloseImmediately() {
+		s.logger(clientConn).Info().Msg("Health check received")
+		return
+	}
+
+	host, port := header.GetHostPort()
+	dstConn, err := s.createDestConnection(host, port)
+	if err != nil {
+		s.logger(clientConn).Err(err).Msg("failed to get or create destination connection")
+		return
+	}
+	defer dstConn.Close()
+
+	go s.forwardFromDestination(dstConn, clientConn)
+
+	buf := sizedPool.GetSized(65535)
+	defer sizedPool.Put(buf)
+
+	for {
+		select {
+		case <-s.ctx.Done():
+			return
+		default:
+			n, err := clientConn.Read(buf)
+			// Per net.Conn contract, Read may return (n > 0, err == io.EOF).
+			// Always forward any bytes we got before acting on the error.
+			if n > 0 {
+				if _, werr := dstConn.Write(buf[:n]); werr != nil {
+					s.logger(clientConn).Err(werr).Msgf("failed to write %d bytes to destination", n)
+					return
+				}
+			}
+			if err != nil {
+				// Expected shutdown paths.
+				if errors.Is(err, io.EOF) || errors.Is(err, net.ErrClosed) {
+					return
+				}
+				s.logger(clientConn).Err(err).Msg("failed to read from client")
+				return
+			}
+		}
+	}
+}
+
+func (s *UDPServer) createDestConnection(host, port string) (*net.UDPConn, error) {
+	addr := net.JoinHostPort(host, port)
+	udpAddr, err := net.ResolveUDPAddr("udp", addr)
+	if err != nil {
+		return nil, err
+	}
+
+	dstConn, err := net.DialUDP("udp", nil, udpAddr)
+	if err != nil {
+		return nil, err
+	}
+
+	return dstConn, nil
+}
+
+func (s *UDPServer) forwardFromDestination(dstConn *net.UDPConn, clientConn net.Conn) {
+	buffer := sizedPool.GetSized(65535)
+	defer sizedPool.Put(buffer)
+
+	for {
+		select {
+		case <-s.ctx.Done():
+			return
+		default:
+			_ = dstConn.SetReadDeadline(time.Now().Add(readDeadline))
+			n, err := dstConn.Read(buffer)
+			if err != nil {
+				// The destination socket can be closed when the client disconnects (e.g. during
+				// the stream support probe in AgentConfig.StartWithCerts). Treat that as a
+				// normal exit and avoid noisy logs.
+				if errors.Is(err, net.ErrClosed) {
+					return
+				}
+				if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
+					continue
+				}
+				s.loggerWithDst(clientConn, dstConn).Err(err).Msg("failed to read from destination")
+				return
+			}
+			if _, err := clientConn.Write(buffer[:n]); err != nil {
+				s.loggerWithDst(clientConn, dstConn).Err(err).Msgf("failed to write %d bytes to client", n)
+				return
+			}
+		}
+	}
+}

agent/pkg/agent/templates/agent.compose.yml

@@ -1,44 +0,0 @@
-services:
-  agent:
-    image: "{{.Image}}"
-    container_name: godoxy-agent
-    restart: always
-    network_mode: host # do not change this
-    environment:
-      AGENT_NAME: "{{.Name}}"
-      AGENT_PORT: "{{.Port}}"
-      AGENT_CA_CERT: "{{.CACert}}"
-      AGENT_SSL_CERT: "{{.SSLCert}}"
-      # use agent as a docker socket proxy: [host]:port
-      # set LISTEN_ADDR to enable (e.g. 127.0.0.1:2375)
-      LISTEN_ADDR:
-      POST: false
-      ALLOW_RESTARTS: false
-      ALLOW_START: false
-      ALLOW_STOP: false
-      AUTH: false
-      BUILD: false
-      COMMIT: false
-      CONFIGS: false
-      CONTAINERS: false
-      DISTRIBUTION: false
-      EVENTS: true
-      EXEC: false
-      GRPC: false
-      IMAGES: false
-      INFO: false
-      NETWORKS: false
-      NODES: false
-      PING: true
-      PLUGINS: false
-      SECRETS: false
-      SERVICES: false
-      SESSION: false
-      SWARM: false
-      SYSTEM: false
-      TASKS: false
-      VERSION: true
-      VOLUMES: false
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
-      - ./data:/app/data

agent/pkg/agent/templates/agent.compose.yml.tmpl

@@ -5,7 +5,8 @@ services:
     restart: always
     {{ if eq .ContainerRuntime "podman" -}}
     ports:
-      - "{{.Port}}:{{.Port}}"
+      - "{{.Port}}:{{.Port}}/tcp"
+      - "{{.Port}}:{{.Port}}/udp"
     {{ else -}}
     network_mode: host # do not change this
     {{ end -}}

agent/pkg/agentproxy/README.md

@@ -0,0 +1,122 @@
+# agent/pkg/agentproxy
+
+Package for configuring HTTP proxy connections through the GoDoxy Agent using HTTP headers.
+
+## Overview
+
+This package provides types and functions for parsing and setting agent proxy configuration via HTTP headers. It supports both a modern base64-encoded JSON format and a legacy header-based format for backward compatibility.
+
+## Architecture
+
+```mermaid
+graph LR
+    A[HTTP Request] --> B[ConfigFromHeaders]
+    B --> C{Modern Format?}
+    C -->|Yes| D[Parse X-Proxy-Config Base64 JSON]
+    C -->|No| E[Parse Legacy Headers]
+    D --> F[Config]
+    E --> F
+
+    F --> G[SetAgentProxyConfigHeaders]
+    G --> H[Modern Headers]
+    G --> I[Legacy Headers]
+```
+
+## Public Types
+
+### Config
+
+```go
+type Config struct {
+    Scheme string       // Proxy scheme (http or https)
+    Host   string       // Proxy host (hostname or hostname:port)
+    HTTPConfig         // Extended HTTP configuration
+}
+```
+
+The `HTTPConfig` embedded type (from `internal/route/types`) includes:
+
+- `NoTLSVerify` - Skip TLS certificate verification
+- `ResponseHeaderTimeout` - Timeout for response headers
+- `DisableCompression` - Disable gzip compression
+
+## Public Functions
+
+### ConfigFromHeaders
+
+```go
+func ConfigFromHeaders(h http.Header) (Config, error)
+```
+
+Parses proxy configuration from HTTP request headers. Tries modern format first, falls back to legacy format if not present.
+
+### proxyConfigFromHeaders
+
+```go
+func proxyConfigFromHeaders(h http.Header) (Config, error)
+```
+
+Parses the modern base64-encoded JSON format from `X-Proxy-Config` header.
+
+### proxyConfigFromHeadersLegacy
+
+```go
+func proxyConfigFromHeadersLegacy(h http.Header) Config
+```
+
+Parses the legacy header format:
+
+- `X-Proxy-Host` - Proxy host
+- `X-Proxy-Https` - Whether to use HTTPS
+- `X-Proxy-Skip-Tls-Verify` - Skip TLS verification
+- `X-Proxy-Response-Header-Timeout` - Response timeout in seconds
+
+### SetAgentProxyConfigHeaders
+
+```go
+func (cfg *Config) SetAgentProxyConfigHeaders(h http.Header)
+```
+
+Sets headers for modern format with base64-encoded JSON config.
+
+### SetAgentProxyConfigHeadersLegacy
+
+```go
+func (cfg *Config) SetAgentProxyConfigHeadersLegacy(h http.Header)
+```
+
+Sets headers for legacy format with individual header fields.
+
+## Header Constants
+
+Modern headers:
+
+- `HeaderXProxyScheme` - Proxy scheme
+- `HeaderXProxyHost` - Proxy host
+- `HeaderXProxyConfig` - Base64-encoded JSON config
+
+Legacy headers (deprecated):
+
+- `HeaderXProxyHTTPS`
+- `HeaderXProxySkipTLSVerify`
+- `HeaderXProxyResponseHeaderTimeout`
+
+## Usage Example
+
+```go
+// Reading configuration from incoming request headers
+func handleRequest(w http.ResponseWriter, r *http.Request) {
+    cfg, err := agentproxy.ConfigFromHeaders(r.Header)
+    if err != nil {
+        http.Error(w, "Invalid proxy config", http.StatusBadRequest)
+        return
+    }
+
+    // Use cfg.Scheme and cfg.Host to proxy the request
+    // ...
+}
+```
+
+## Integration
+
+This package is used by `agent/pkg/handler/proxy_http.go` to configure reverse proxy connections based on request headers.

agent/pkg/certs/README.md

@@ -0,0 +1,102 @@
+# agent/pkg/certs
+
+Certificate management package for creating and extracting certificate archives.
+
+## Overview
+
+This package provides utilities for packaging SSL certificates into ZIP archives and extracting them. It is used by the GoDoxy Agent to distribute certificates to clients in a convenient format.
+
+## Architecture
+
+```mermaid
+graph LR
+    A[Raw Certs] --> B[ZipCert]
+    B --> C[ZIP Archive]
+    C --> D[ca.pem]
+    C --> E[cert.pem]
+    C --> F[key.pem]
+
+    G[ZIP Archive] --> H[ExtractCert]
+    H --> I[ca, crt, key]
+```
+
+## Public Functions
+
+### ZipCert
+
+```go
+func ZipCert(ca, crt, key []byte) ([]byte, error)
+```
+
+Creates a ZIP archive containing three PEM files:
+
+- `ca.pem` - CA certificate
+- `cert.pem` - Server/client certificate
+- `key.pem` - Private key
+
+**Parameters:**
+
+- `ca` - CA certificate in PEM format
+- `crt` - Certificate in PEM format
+- `key` - Private key in PEM format
+
+**Returns:**
+
+- ZIP archive bytes
+- Error if packing fails
+
+### ExtractCert
+
+```go
+func ExtractCert(data []byte) (ca, crt, key []byte, err error)
+```
+
+Extracts certificates from a ZIP archive created by `ZipCert`.
+
+**Parameters:**
+
+- `data` - ZIP archive bytes
+
+**Returns:**
+
+- `ca` - CA certificate bytes
+- `crt` - Certificate bytes
+- `key` - Private key bytes
+- Error if extraction fails
+
+### AgentCertsFilepath
+
+```go
+func AgentCertsFilepath(host string) (filepathOut string, ok bool)
+```
+
+Generates the file path for storing agent certificates.
+
+**Parameters:**
+
+- `host` - Agent hostname
+
+**Returns:**
+
+- Full file path within `certs/` directory
+- `false` if host is invalid (contains path separators or special characters)
+
+### isValidAgentHost
+
+```go
+func isValidAgentHost(host string) bool
+```
+
+Validates that a host string is safe for use in file paths.
+
+## Constants
+
+```go
+const AgentCertsBasePath = "certs"
+```
+
+Base directory for storing certificate archives.
+
+## File Format
+
+The ZIP archive uses `zip.Store` compression (no compression) for fast creation and extraction. Each file is stored with its standard name (`ca.pem`, `cert.pem`, `key.pem`).

agent/pkg/env/README.md

@@ -0,0 +1,52 @@
+# agent/pkg/env
+
+Environment configuration package for the GoDoxy Agent.
+
+## Overview
+
+This package manages environment variable parsing and provides a centralized location for all agent configuration options. It is automatically initialized on import.
+
+## Variables
+
+| Variable                   | Type             | Default                | Description                             |
+| -------------------------- | ---------------- | ---------------------- | --------------------------------------- |
+| `DockerSocket`             | string           | `/var/run/docker.sock` | Path to Docker socket                   |
+| `AgentName`                | string           | System hostname        | Agent identifier                        |
+| `AgentPort`                | int              | `8890`                 | Agent server port                       |
+| `AgentSkipClientCertCheck` | bool             | `false`                | Skip mTLS certificate verification      |
+| `AgentCACert`              | string           | (empty)                | Base64 Encoded CA certificate + key     |
+| `AgentSSLCert`             | string           | (empty)                | Base64 Encoded server certificate + key |
+| `Runtime`                  | ContainerRuntime | `docker`               | Container runtime (docker or podman)    |
+
+## ContainerRuntime Type
+
+```go
+type ContainerRuntime string
+
+const (
+    ContainerRuntimeDocker  ContainerRuntime = "docker"
+    ContainerRuntimePodman  ContainerRuntime = "podman"
+)
+```
+
+## Public Functions
+
+### DefaultAgentName
+
+```go
+func DefaultAgentName() string
+```
+
+Returns the system hostname as the default agent name. Falls back to `"agent"` if hostname cannot be determined.
+
+### Load
+
+```go
+func Load()
+```
+
+Reloads all environment variables from the environment. Called automatically on package init, but can be called again to refresh configuration.
+
+## Validation
+
+The `Load()` function validates that `Runtime` is either `docker` or `podman`. An invalid runtime causes a fatal error.

agent/pkg/handler/README.md

@@ -0,0 +1,127 @@
+# agent/pkg/handler
+
+HTTP request handler package for the GoDoxy Agent.
+
+## Overview
+
+This package provides the HTTP handler for the GoDoxy Agent server, including endpoints for:
+
+- Version information
+- Agent name and runtime
+- Health checks
+- System metrics (via SSE)
+- HTTP proxy routing
+- Docker socket proxying
+
+## Architecture
+
+```mermaid
+graph TD
+    A[HTTP Request] --> B[NewAgentHandler]
+    B --> C{ServeMux Router}
+
+    C --> D[GET /version]
+    C --> E[GET /name]
+    C --> F[GET /runtime]
+    C --> G[GET /health]
+    C --> H[GET /system-info]
+    C --> I[GET /proxy/http/#123;path...#125;]
+    C --> J[ /#42; Docker Socket]
+
+    H --> K[Gin Router]
+    K --> L[WebSocket Upgrade]
+    L --> M[SystemInfo Poller]
+```
+
+## Public Types
+
+### ServeMux
+
+```go
+type ServeMux struct{ *http.ServeMux }
+```
+
+Wrapper around `http.ServeMux` with agent-specific endpoint helpers.
+
+**Methods:**
+
+- `HandleEndpoint(method, endpoint string, handler http.HandlerFunc)` - Registers handler with API base path
+- `HandleFunc(endpoint string, handler http.HandlerFunc)` - Registers GET handler with API base path
+
+## Public Functions
+
+### NewAgentHandler
+
+```go
+func NewAgentHandler() http.Handler
+```
+
+Creates and configures the HTTP handler for the agent server. Sets up:
+
+- Gin-based metrics handler with WebSocket support for SSE
+- All standard agent endpoints
+- HTTP proxy endpoint
+- Docker socket proxy fallback
+
+## Endpoints
+
+| Endpoint                | Method   | Description                          |
+| ----------------------- | -------- | ------------------------------------ |
+| `/version`              | GET      | Returns agent version                |
+| `/name`                 | GET      | Returns agent name                   |
+| `/runtime`              | GET      | Returns container runtime            |
+| `/health`               | GET      | Health check with scheme query param |
+| `/system-info`          | GET      | System metrics via SSE or WebSocket  |
+| `/proxy/http/{path...}` | GET/POST | HTTP proxy with config from headers  |
+| `/*`                    | \*       | Docker socket proxy                  |
+
+## Sub-packages
+
+### proxy_http.go
+
+Handles HTTP proxy requests by reading configuration from request headers and proxying to the configured upstream.
+
+**Key Function:**
+
+- `ProxyHTTP(w, r)` - Proxies HTTP requests based on `X-Proxy-*` headers
+
+### check_health.go
+
+Handles health check requests for various schemes.
+
+**Key Function:**
+
+- `CheckHealth(w, r)` - Performs health checks with configurable scheme
+
+**Supported Schemes:**
+
+- `http`, `https` - HTTP health check
+- `h2c` - HTTP/2 cleartext health check
+- `tcp`, `udp`, `tcp4`, `udp4`, `tcp6`, `udp6` - TCP/UDP health check
+- `fileserver` - File existence check
+
+## Usage Example
+
+```go
+package main
+
+import (
+    "net/http"
+    "github.com/yusing/godoxy/agent/pkg/handler"
+)
+
+func main() {
+    mux := http.NewServeMux()
+    mux.Handle("/", handler.NewAgentHandler())
+
+    http.ListenAndServe(":8890", mux)
+}
+```
+
+## WebSocket Support
+
+The handler includes a permissive WebSocket upgrader for internal use (no origin check). This enables real-time system metrics streaming via Server-Sent Events (SSE).
+
+## Docker Socket Integration
+
+All unmatched requests fall through to the Docker socket handler, allowing the agent to proxy Docker API calls when configured.

agent/pkg/handler/check_health.go

@@ -1,19 +1,18 @@
 package handler
 
 import (
-	"fmt"
+	"net"
 	"net/http"
 	"net/url"
-	"os"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/bytedance/sonic"
+	healthcheck "github.com/yusing/godoxy/internal/health/check"
 	"github.com/yusing/godoxy/internal/types"
-	"github.com/yusing/godoxy/internal/watcher/health/monitor"
 )
 
-var defaultHealthConfig = types.DefaultHealthConfig()
-
 func CheckHealth(w http.ResponseWriter, r *http.Request) {
 	query := r.URL.Query()
 	scheme := query.Get("scheme")
@@ -21,6 +20,7 @@ func CheckHealth(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "missing scheme", http.StatusBadRequest)
 		return
 	}
+	timeout := parseMsOrDefault(query.Get("timeout"))
 
 	var (
 		result types.HealthCheckResult
@@ -33,24 +33,21 @@ func CheckHealth(w http.ResponseWriter, r *http.Request) {
 			http.Error(w, "missing path", http.StatusBadRequest)
 			return
 		}
-		_, err := os.Stat(path)
-		result = types.HealthCheckResult{Healthy: err == nil}
-		if err != nil {
-			result.Detail = err.Error()
-		}
-	case "http", "https": // path is optional
+		result, err = healthcheck.FileServer(path)
+	case "http", "https", "h2c": // path is optional
 		host := query.Get("host")
 		path := query.Get("path")
 		if host == "" {
 			http.Error(w, "missing host", http.StatusBadRequest)
 			return
 		}
-		result, err = monitor.NewHTTPHealthMonitor(&url.URL{
-			Scheme: scheme,
-			Host:   host,
-			Path:   path,
-		}, defaultHealthConfig).CheckHealth()
-	case "tcp", "udp":
+		url := url.URL{Scheme: scheme, Host: host}
+		if scheme == "h2c" {
+			result, err = healthcheck.H2C(r.Context(), &url, http.MethodHead, path, timeout)
+		} else {
+			result, err = healthcheck.HTTP(&url, http.MethodHead, path, timeout)
+		}
+	case "tcp", "udp", "tcp4", "udp4", "tcp6", "udp6":
 		host := query.Get("host")
 		if host == "" {
 			http.Error(w, "missing host", http.StatusBadRequest)
@@ -63,12 +60,10 @@ func CheckHealth(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 		if port != "" {
-			host = fmt.Sprintf("%s:%s", host, port)
+			host = net.JoinHostPort(host, port)
 		}
-		result, err = monitor.NewRawHealthMonitor(&url.URL{
-			Scheme: scheme,
-			Host:   host,
-		}, defaultHealthConfig).CheckHealth()
+		url := url.URL{Scheme: scheme, Host: host}
+		result, err = healthcheck.Stream(r.Context(), &url, timeout)
 	}
 
 	if err != nil {
@@ -80,3 +75,16 @@ func CheckHealth(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 	sonic.ConfigDefault.NewEncoder(w).Encode(result)
 }
+
+func parseMsOrDefault(msStr string) time.Duration {
+	if msStr == "" {
+		return types.HealthCheckTimeoutDefault
+	}
+
+	timeoutMs, _ := strconv.ParseInt(msStr, 10, 64)
+	if timeoutMs == 0 {
+		return types.HealthCheckTimeoutDefault
+	}
+
+	return time.Duration(timeoutMs) * time.Millisecond
+}

agent/pkg/handler/handler.go

@@ -1,9 +1,9 @@
 package handler
 
 import (
-	"fmt"
 	"net/http"
 
+	"github.com/bytedance/sonic"
 	"github.com/gin-gonic/gin"
 	"github.com/gorilla/websocket"
 	"github.com/yusing/godoxy/agent/pkg/agent"
@@ -44,14 +44,14 @@ func NewAgentHandler() http.Handler {
 	}
 
 	mux.HandleFunc(agent.EndpointProxyHTTP+"/{path...}", ProxyHTTP)
-	mux.HandleEndpoint("GET", agent.EndpointVersion, func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprint(w, version.Get())
-	})
-	mux.HandleEndpoint("GET", agent.EndpointName, func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprint(w, env.AgentName)
-	})
-	mux.HandleEndpoint("GET", agent.EndpointRuntime, func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprint(w, env.Runtime)
+	mux.HandleFunc(agent.EndpointInfo, func(w http.ResponseWriter, r *http.Request) {
+		agentInfo := agent.AgentInfo{
+			Version: version.Get(),
+			Name:    env.AgentName,
+			Runtime: env.Runtime,
+		}
+		w.Header().Set("Content-Type", "application/json")
+		sonic.ConfigDefault.NewEncoder(w).Encode(agentInfo)
 	})
 	mux.HandleEndpoint("GET", agent.EndpointHealth, CheckHealth)
 	mux.HandleEndpoint("GET", agent.EndpointSystemInfo, metricsHandler.ServeHTTP)

agent/pkg/handler/proxy_http.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httputil"
+	"strings"
 	"time"
 
 	"github.com/yusing/godoxy/agent/pkg/agent"
@@ -43,10 +44,22 @@ func ProxyHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	r.URL.Scheme = ""
-	r.URL.Host = ""
-	r.URL.Path = r.URL.Path[agent.HTTPProxyURLPrefixLen:] // strip the {API_BASE}/proxy/http prefix
-	r.RequestURI = r.URL.String()
+	// Strip the {API_BASE}/proxy/http prefix while preserving URL escaping.
+	//
+	// NOTE: `r.URL.Path` is decoded. If we rewrite it without keeping `RawPath`
+	// in sync, Go may re-escape the path (e.g. turning "%5B" into "%255B"),
+	// which breaks urls with percent-encoded characters, like Next.js static chunk URLs.
+	prefix := agent.APIEndpointBase + agent.EndpointProxyHTTP
+	r.URL.Path = strings.TrimPrefix(r.URL.Path, prefix)
+	if r.URL.RawPath != "" {
+		if after, ok := strings.CutPrefix(r.URL.RawPath, prefix); ok {
+			r.URL.RawPath = after
+		} else {
+			// RawPath is no longer a valid encoding for Path; force Go to re-derive it.
+			r.URL.RawPath = ""
+		}
+	}
+	r.RequestURI = ""
 
 	rp := &httputil.ReverseProxy{
 		Director: func(r *http.Request) {

cmd/README.md

@@ -0,0 +1,73 @@
+# cmd
+
+Main entry point package for GoDoxy, a lightweight reverse proxy with WebUI for Docker containers.
+
+## Overview
+
+This package contains the `main.go` entry point that initializes and starts the GoDoxy server. It coordinates the initialization of all core components including configuration loading, API server, authentication, and monitoring services.
+
+## Architecture
+
+```mermaid
+graph TD
+    A[main] --> B[Init Profiling]
+    A --> C[Init Logger]
+    A --> D[Parallel Init]
+    D --> D1[DNS Providers]
+    D --> D2[Icon Cache]
+    D --> D3[System Info Poller]
+    D --> D4[Middleware Compose Files]
+    A --> E[JWT Secret Setup]
+    A --> F[Create Directories]
+    A --> G[Load Config]
+    A --> H[Start Proxy Servers]
+    A --> I[Init Auth]
+    A --> J[Start API Server]
+    A --> K[Debug Server]
+    A --> L[Uptime Poller]
+    A --> M[Watch Changes]
+    A --> N[Wait Exit]
+```
+
+## Main Function Flow
+
+The `main()` function performs the following initialization steps:
+
+1. **Profiling Setup**: Initializes pprof endpoints for performance monitoring
+1. **Logger Initialization**: Configures zerolog with memory logging
+1. **Parallel Initialization**: Starts DNS providers, icon cache, system info poller, and middleware
+1. **JWT Secret**: Ensures API JWT secret is set (generates random if not provided)
+1. **Directory Preparation**: Creates required directories for logs, certificates, etc.
+1. **Configuration Loading**: Loads YAML configuration and reports any errors
+1. **Proxy Servers**: Starts HTTP/HTTPS proxy servers based on configuration
+1. **Authentication**: Initializes authentication system with access control
+1. **API Server**: Starts the REST API server with all configured routes
+1. **Debug Server**: Starts the debug page server (development mode)
+1. **Monitoring**: Starts uptime and system info polling
+1. **Change Watcher**: Starts watching for Docker container and configuration changes
+1. **Graceful Shutdown**: Waits for exit signal with configured timeout
+
+## Configuration
+
+The main configuration is loaded from `config/config.yml`. Required directories include:
+
+- `logs/` - Log files
+- `config/` - Configuration directory
+- `certs/` - SSL certificates
+- `proxy/` - Proxy-related files
+
+## Environment Variables
+
+- `API_JWT_SECRET` - Secret key for JWT authentication (optional, auto-generated if not set)
+
+## Dependencies
+
+- `internal/api` - REST API handlers
+- `internal/auth` - Authentication and ACL
+- `internal/config` - Configuration management
+- `internal/dnsproviders` - DNS provider integration
+- `internal/homepage` - WebUI dashboard
+- `internal/logging` - Logging infrastructure
+- `internal/metrics` - System metrics collection
+- `internal/route` - HTTP routing and middleware
+- `github.com/yusing/goutils/task` - Task lifecycle management

cmd/bench_server/Dockerfile

@@ -0,0 +1,18 @@
+FROM golang:1.25.5-alpine AS builder
+
+HEALTHCHECK NONE
+
+WORKDIR /src
+
+COPY go.mod go.sum ./
+COPY main.go ./
+
+RUN go build -o bench_server main.go
+
+FROM scratch
+
+COPY --from=builder /src/bench_server /app/run
+
+USER 1001:1001
+
+CMD ["/app/run"]

cmd/bench_server/go.mod

@@ -0,0 +1,3 @@
+module github.com/yusing/godoxy/cmd/bench_server
+
+go 1.25.5

cmd/bench_server/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"math/rand/v2"
+)
+
+var printables = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+var random = make([]byte, 4096)
+
+func init() {
+	for i := range random {
+		random[i] = printables[rand.IntN(len(printables))]
+	}
+}
+
+func main() {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		w.Write(random)
+	})
+
+	server := &http.Server{
+		Addr:    ":80",
+		Handler: handler,
+	}
+
+	log.Println("Bench server listening on :80")
+	if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+		log.Fatalf("ListenAndServe: %v", err)
+	}
+}

cmd/debug_page.go

@@ -0,0 +1,257 @@
+//go:build !production
+
+package main
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/yusing/godoxy/internal/api"
+	apiV1 "github.com/yusing/godoxy/internal/api/v1"
+	agentApi "github.com/yusing/godoxy/internal/api/v1/agent"
+	authApi "github.com/yusing/godoxy/internal/api/v1/auth"
+	certApi "github.com/yusing/godoxy/internal/api/v1/cert"
+	dockerApi "github.com/yusing/godoxy/internal/api/v1/docker"
+	fileApi "github.com/yusing/godoxy/internal/api/v1/file"
+	homepageApi "github.com/yusing/godoxy/internal/api/v1/homepage"
+	metricsApi "github.com/yusing/godoxy/internal/api/v1/metrics"
+	routeApi "github.com/yusing/godoxy/internal/api/v1/route"
+	"github.com/yusing/godoxy/internal/auth"
+	"github.com/yusing/godoxy/internal/idlewatcher"
+	idlewatcherTypes "github.com/yusing/godoxy/internal/idlewatcher/types"
+)
+
+type debugMux struct {
+	endpoints []debugEndpoint
+	mux       http.ServeMux
+}
+
+type debugEndpoint struct {
+	name   string
+	method string
+	path   string
+}
+
+func newDebugMux() *debugMux {
+	return &debugMux{
+		endpoints: make([]debugEndpoint, 0),
+		mux:       *http.NewServeMux(),
+	}
+}
+
+func (mux *debugMux) registerEndpoint(name, method, path string) {
+	mux.endpoints = append(mux.endpoints, debugEndpoint{name: name, method: method, path: path})
+}
+
+func (mux *debugMux) HandleFunc(name, method, path string, handler http.HandlerFunc) {
+	mux.registerEndpoint(name, method, path)
+	mux.mux.HandleFunc(method+" "+path, handler)
+}
+
+func (mux *debugMux) Finalize() {
+	mux.mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintln(w, `
+<!DOCTYPE html>
+<html>
+	<head>
+		<style>
+				body {
+					font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
+					font-size: 16px;
+					line-height: 1.5;
+					color: #f8f9fa;
+					background-color: #121212;
+					margin: 0;
+					padding: 0;
+				}
+				table {
+					border-collapse: collapse;
+					width: 100%;
+					margin-top: 20px;
+				}
+				th, td {
+					padding: 12px;
+					text-align: left;
+					border-bottom: 1px solid #333;
+				}
+				th {
+					background-color: #1e1e1e;
+					font-weight: 600;
+					color: #f8f9fa;
+				}
+				td {
+					color: #e9ecef;
+				}
+				.link {
+					color: #007bff;
+					text-decoration: none;
+				}
+				.link:hover {
+					text-decoration: underline;
+				}
+				.method {
+					color: #6c757d;
+					font-family: monospace;
+				}
+				.path {
+					color: #6c757d;
+					font-family: monospace;
+				}
+		</style>
+	</head>
+	<body>
+		<table>
+			<thead>
+				<tr>
+					<th>Name</th>
+					<th>Method</th>
+					<th>Path</th>
+				</tr>
+			</thead>
+			<tbody>`)
+		for _, endpoint := range mux.endpoints {
+			fmt.Fprintf(w, "<tr><td><a class='link' href=%q>%s</a></td><td class='method'>%s</td><td class='path'>%s</td></tr>", endpoint.path, endpoint.name, endpoint.method, endpoint.path)
+		}
+		fmt.Fprintln(w, `
+			</tbody>
+		</table>
+	</body>
+</html>`)
+	})
+}
+
+func listenDebugServer() {
+	mux := newDebugMux()
+	mux.mux.HandleFunc("/favicon.ico", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "image/svg+xml")
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text x="50" y="50" text-anchor="middle" dominant-baseline="middle">🐙</text></svg>`))
+	})
+
+	mux.HandleFunc("Auth block page", "GET", "/auth/block", AuthBlockPageHandler)
+	mux.HandleFunc("Idlewatcher loading page", "GET", idlewatcherTypes.PathPrefix, idlewatcher.DebugHandler)
+	apiHandler := newApiHandler(mux)
+	mux.mux.HandleFunc("/api/v1/", apiHandler.ServeHTTP)
+
+	mux.Finalize()
+
+	go http.ListenAndServe(":7777", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Pragma", "no-cache")
+		w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+		w.Header().Set("Expires", "0")
+		mux.mux.ServeHTTP(w, r)
+	}))
+}
+
+func newApiHandler(debugMux *debugMux) *gin.Engine {
+	r := gin.New()
+	r.Use(api.ErrorHandler())
+	r.Use(api.ErrorLoggingMiddleware())
+	r.Use(api.NoCache())
+
+	registerGinRoute := func(router gin.IRouter, method, name string, path string, handler gin.HandlerFunc) {
+		if group, ok := router.(*gin.RouterGroup); ok {
+			debugMux.registerEndpoint(name, method, group.BasePath()+path)
+		} else {
+			debugMux.registerEndpoint(name, method, path)
+		}
+		router.Handle(method, path, handler)
+	}
+
+	registerGinRoute(r, "GET", "App version", "/api/v1/version", apiV1.Version)
+
+	v1 := r.Group("/api/v1")
+	if auth.IsEnabled() {
+		v1Auth := v1.Group("/auth")
+		{
+			registerGinRoute(v1Auth, "HEAD", "Auth check", "/check", authApi.Check)
+			registerGinRoute(v1Auth, "POST", "Auth login", "/login", authApi.Login)
+			registerGinRoute(v1Auth, "GET", "Auth callback", "/callback", authApi.Callback)
+			registerGinRoute(v1Auth, "POST", "Auth callback", "/callback", authApi.Callback)
+			registerGinRoute(v1Auth, "POST", "Auth logout", "/logout", authApi.Logout)
+			registerGinRoute(v1Auth, "GET", "Auth logout", "/logout", authApi.Logout)
+		}
+	}
+
+	{
+		// enable cache for favicon
+		registerGinRoute(v1, "GET", "Route favicon", "/favicon", apiV1.FavIcon)
+		registerGinRoute(v1, "GET", "Route health", "/health", apiV1.Health)
+		registerGinRoute(v1, "GET", "List icons", "/icons", apiV1.Icons)
+		registerGinRoute(v1, "POST", "Config reload", "/reload", apiV1.Reload)
+		registerGinRoute(v1, "GET", "Route stats", "/stats", apiV1.Stats)
+
+		route := v1.Group("/route")
+		{
+			registerGinRoute(route, "GET", "List routes", "/list", routeApi.Routes)
+			registerGinRoute(route, "GET", "Get route", "/:which", routeApi.Route)
+			registerGinRoute(route, "GET", "List providers", "/providers", routeApi.Providers)
+			registerGinRoute(route, "GET", "List routes by provider", "/by_provider", routeApi.ByProvider)
+			registerGinRoute(route, "POST", "Playground", "/playground", routeApi.Playground)
+		}
+
+		file := v1.Group("/file")
+		{
+			registerGinRoute(file, "GET", "List files", "/list", fileApi.List)
+			registerGinRoute(file, "GET", "Get file", "/content", fileApi.Get)
+			registerGinRoute(file, "PUT", "Set file", "/content", fileApi.Set)
+			registerGinRoute(file, "POST", "Set file", "/content", fileApi.Set)
+			registerGinRoute(file, "POST", "Validate file", "/validate", fileApi.Validate)
+		}
+
+		homepage := v1.Group("/homepage")
+		{
+			registerGinRoute(homepage, "GET", "List categories", "/categories", homepageApi.Categories)
+			registerGinRoute(homepage, "GET", "List items", "/items", homepageApi.Items)
+			registerGinRoute(homepage, "POST", "Set item", "/set/item", homepageApi.SetItem)
+			registerGinRoute(homepage, "POST", "Set items batch", "/set/items_batch", homepageApi.SetItemsBatch)
+			registerGinRoute(homepage, "POST", "Set item visible", "/set/item_visible", homepageApi.SetItemVisible)
+			registerGinRoute(homepage, "POST", "Set item favorite", "/set/item_favorite", homepageApi.SetItemFavorite)
+			registerGinRoute(homepage, "POST", "Set item sort order", "/set/item_sort_order", homepageApi.SetItemSortOrder)
+			registerGinRoute(homepage, "POST", "Set item all sort order", "/set/item_all_sort_order", homepageApi.SetItemAllSortOrder)
+			registerGinRoute(homepage, "POST", "Set item fav sort order", "/set/item_fav_sort_order", homepageApi.SetItemFavSortOrder)
+			registerGinRoute(homepage, "POST", "Set category order", "/set/category_order", homepageApi.SetCategoryOrder)
+			registerGinRoute(homepage, "POST", "Item click", "/item_click", homepageApi.ItemClick)
+		}
+
+		cert := v1.Group("/cert")
+		{
+			registerGinRoute(cert, "GET", "Get cert info", "/info", certApi.Info)
+			registerGinRoute(cert, "GET", "Renew cert", "/renew", certApi.Renew)
+		}
+
+		agent := v1.Group("/agent")
+		{
+			registerGinRoute(agent, "GET", "List agents", "/list", agentApi.List)
+			registerGinRoute(agent, "POST", "Create agent", "/create", agentApi.Create)
+			registerGinRoute(agent, "POST", "Verify agent", "/verify", agentApi.Verify)
+		}
+
+		metrics := v1.Group("/metrics")
+		{
+			registerGinRoute(metrics, "GET", "Get system info", "/system_info", metricsApi.SystemInfo)
+			registerGinRoute(metrics, "GET", "Get all system info", "/all_system_info", metricsApi.AllSystemInfo)
+			registerGinRoute(metrics, "GET", "Get uptime", "/uptime", metricsApi.Uptime)
+		}
+
+		docker := v1.Group("/docker")
+		{
+			registerGinRoute(docker, "GET", "Get container", "/container/:id", dockerApi.GetContainer)
+			registerGinRoute(docker, "GET", "List containers", "/containers", dockerApi.Containers)
+			registerGinRoute(docker, "GET", "Get docker info", "/info", dockerApi.Info)
+			registerGinRoute(docker, "GET", "Get docker logs", "/logs/:id", dockerApi.Logs)
+			registerGinRoute(docker, "POST", "Start docker container", "/start", dockerApi.Start)
+			registerGinRoute(docker, "POST", "Stop docker container", "/stop", dockerApi.Stop)
+			registerGinRoute(docker, "POST", "Restart docker container", "/restart", dockerApi.Restart)
+		}
+	}
+
+	return r
+}
+
+func AuthBlockPageHandler(w http.ResponseWriter, r *http.Request) {
+	auth.WriteBlockPage(w, http.StatusForbidden, "Forbidden", "Login", "/login")
+}

cmd/debug_page_prod.go

@@ -0,0 +1,7 @@
+//go:build production
+
+package main
+
+func listenDebugServer() {
+	// no-op
+}

cmd/h2c_test_server/Dockerfile

@@ -0,0 +1,18 @@
+FROM golang:1.25.5-alpine AS builder
+
+HEALTHCHECK NONE
+
+WORKDIR /src
+
+COPY go.mod go.sum ./
+COPY main.go ./
+
+RUN go build -o h2c_test_server main.go
+
+FROM scratch
+
+COPY --from=builder /src/h2c_test_server /app/run
+
+USER 1001:1001
+
+CMD ["/app/run"]

cmd/h2c_test_server/go.mod

@@ -0,0 +1,7 @@
+module github.com/yusing/godoxy/cmd/h2c_test_server
+
+go 1.25.5
+
+require golang.org/x/net v0.48.0
+
+require golang.org/x/text v0.32.0 // indirect

cmd/h2c_test_server/go.sum

@@ -0,0 +1,4 @@
+golang.org/x/net v0.48.0 h1:zyQRTTrjc33Lhh0fBgT/H3oZq9WuvRR5gPC70xpDiQU=
+golang.org/x/net v0.48.0/go.mod h1:+ndRgGjkh8FGtu1w1FGbEC31if4VrNVMuKTgcAAnQRY=
+golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
+golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=

cmd/h2c_test_server/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
+)
+
+func main() {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte("ok"))
+	})
+
+	server := &http.Server{
+		Addr:    ":80",
+		Handler: h2c.NewHandler(handler, &http2.Server{}),
+	}
+
+	log.Println("H2C server listening on :80")
+	if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+		log.Fatalf("ListenAndServe: %v", err)
+	}
+}

cmd/main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/yusing/godoxy/internal/metrics/systeminfo"
 	"github.com/yusing/godoxy/internal/metrics/uptime"
 	"github.com/yusing/godoxy/internal/net/gphttp/middleware"
+	"github.com/yusing/godoxy/internal/route/rules"
 	gperr "github.com/yusing/goutils/errs"
 	"github.com/yusing/goutils/server"
 	"github.com/yusing/goutils/task"
@@ -58,9 +59,12 @@ func main() {
 	}
 
 	config.StartProxyServers()
+
 	if err := auth.Initialize(); err != nil {
 		log.Fatal().Err(err).Msg("failed to initialize authentication")
 	}
+	rules.InitAuthHandler(auth.AuthOrProceed)
+
 	// API Handler needs to start after auth is initialized.
 	server.StartServer(task.RootTask("api_server", false), server.Options{
 		Name:     "api",
@@ -68,6 +72,8 @@ func main() {
 		Handler:  api.NewHandler(),
 	})
 
+	listenDebugServer()
+
 	uptime.Poller.Start()
 	config.WatchChanges()
 

config.example.yml

@@ -88,6 +88,12 @@ entrypoint:
   #     - name: default
   #       do: proxy http://other-proxy:8080
 
+defaults:
+  healthcheck:
+    interval: 5s
+    timeout: 15s
+    retries: 3
+
 providers:
   # include files are standalone yaml files under `config/` directory
   #

dev.compose.yml

@@ -1,3 +1,8 @@
+x-benchmark: &benchmark
+  restart: no
+  labels:
+    proxy.exclude: true
+    proxy.#1.healthcheck.disable: true
 services:
   app:
     image: godoxy-dev
@@ -54,7 +59,190 @@ services:
       - USERS=user:$$2a$$10$$UdLYoJ5lgPsC0RKqYH/jMua7zIn0g9kPqWmhYayJYLaZQ/FTmH2/u # user:password
     labels:
       proxy.tinyauth.port: "3000"
+  jotty: # issue #182
+    image: ghcr.io/fccview/jotty:latest
+    container_name: jotty
+    user: "1000:1000"
+    tmpfs:
+      - /app/data:rw,uid=1000,gid=1000
+      - /app/config:rw,uid=1000,gid=1000
+      - /app/.next/cache:rw,uid=1000,gid=1000
+    restart: unless-stopped
+    environment:
+      - NODE_ENV=production
+    labels:
+      proxy.aliases: "jotty.my.app"
+  postgres-test:
+    image: postgres:18-alpine
+    container_name: postgres-test
+    restart: unless-stopped
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+      - POSTGRES_DB=postgres
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 30s
+  h2c_test_server:
+    build:
+      context: cmd/h2c_test_server
+      dockerfile: Dockerfile
+    container_name: h2c_test
+    restart: unless-stopped
+    labels:
+      proxy.#1.scheme: h2c
+      proxy.#1.port: 80
+  bench: # returns 4096 bytes of random data
+    <<: *benchmark
+    build:
+      context: cmd/bench_server
+      dockerfile: Dockerfile
+    container_name: bench
+  godoxy:
+    <<: *benchmark
+    build: .
+    container_name: godoxy-benchmark
+    ports:
+      - 8080:80
+    configs:
+      - source: godoxy_config
+        target: /app/config/config.yml
+      - source: godoxy_provider
+        target: /app/config/providers.yml
+  traefik:
+    <<: *benchmark
+    image: traefik:latest
+    container_name: traefik
+    command:
+      - --api.insecure=true
+      - --entrypoints.web.address=:8081
+      - --providers.file.directory=/etc/traefik/dynamic
+      - --providers.file.watch=true
+      - --log.level=ERROR
+    ports:
+      - 8081:8081
+    configs:
+      - source: traefik_config
+        target: /etc/traefik/dynamic/routes.yml
+  caddy:
+    <<: *benchmark
+    image: caddy:latest
+    container_name: caddy
+    ports:
+      - 8082:80
+    configs:
+      - source: caddy_config
+        target: /etc/caddy/Caddyfile
+    tmpfs:
+      - /data
+      - /config
+  nginx:
+    <<: *benchmark
+    image: nginx:latest
+    container_name: nginx
+    command: nginx -g 'daemon off;' -c /etc/nginx/nginx.conf
+    ports:
+      - 8083:80
+    configs:
+      - source: nginx_config
+        target: /etc/nginx/nginx.conf
+
 configs:
+  godoxy_config:
+    content: |
+      providers:
+        include:
+          - providers.yml
+  godoxy_provider:
+    content: |
+      bench.domain.com:
+        host: bench
+  traefik_config:
+    content: |
+      http:
+        routers:
+          bench:
+            rule: "Host(`bench.domain.com`)"
+            entryPoints:
+              - web
+            service: bench
+        services:
+          bench:
+            loadBalancer:
+              servers:
+                - url: "http://bench:80"
+  caddy_config:
+    content: |
+      {
+        admin off
+        auto_https off
+        default_bind 0.0.0.0
+
+        servers {
+          protocols h1 h2c
+        }
+      }
+
+      http://bench.domain.com {
+        reverse_proxy bench:80
+      }
+  nginx_config:
+    content: |
+      worker_processes auto;
+      worker_rlimit_nofile 65535;
+      error_log /dev/null;
+      pid /var/run/nginx.pid;
+
+      events {
+        worker_connections 10240;
+        multi_accept on;
+        use epoll;
+      }
+
+      http {
+        include /etc/nginx/mime.types;
+        default_type application/octet-stream;
+        
+        access_log off;
+        
+        sendfile on;
+        tcp_nopush on;
+        tcp_nodelay on;
+        keepalive_timeout 65;
+        keepalive_requests 10000;
+        
+        upstream backend {
+          server bench:80;
+          keepalive 128;
+        }
+
+        server {
+          listen 80 default_server;
+          server_name _;
+          http2 on;
+
+          return 404;
+        }
+
+        server {
+          listen 80;
+          server_name bench.domain.com;
+          http2 on;
+          
+          location / {
+            proxy_pass http://backend;
+            proxy_http_version 1.1;
+            proxy_set_header Connection "";
+            proxy_set_header Host $$host;
+            proxy_set_header X-Real-IP $$remote_addr;
+            proxy_set_header X-Forwarded-For $$proxy_add_x_forwarded_for;
+            proxy_buffering off;
+          }
+        }
+      }
   parca:
     content: |
       object_storage:

go.mod

@@ -1,63 +1,67 @@
 module github.com/yusing/godoxy
 
-go 1.25.4
+go 1.25.5
 
-replace github.com/yusing/godoxy/agent => ./agent
-
-replace github.com/yusing/godoxy/internal/dnsproviders => ./internal/dnsproviders
-
-replace github.com/coreos/go-oidc/v3 => ./internal/go-oidc
-
-replace github.com/shirou/gopsutil/v4 => ./internal/gopsutil
-
-replace github.com/yusing/goutils => ./goutils
+replace (
+	github.com/coreos/go-oidc/v3 => ./internal/go-oidc
+	github.com/shirou/gopsutil/v4 => ./internal/gopsutil
+	github.com/yusing/godoxy/agent => ./agent
+	github.com/yusing/godoxy/internal/dnsproviders => ./internal/dnsproviders
+	github.com/yusing/goutils => ./goutils
+	github.com/yusing/goutils/http/reverseproxy => ./goutils/http/reverseproxy
+	github.com/yusing/goutils/http/websocket => ./goutils/http/websocket
+	github.com/yusing/goutils/server => ./goutils/server
+)
 
 require (
-	github.com/PuerkitoBio/goquery v1.11.0 // parsing HTML for extract fav icon
+	github.com/PuerkitoBio/goquery v1.11.0 // parsing HTML for extract fav icon; modify_html middleware
 	github.com/coreos/go-oidc/v3 v3.17.0 // oidc authentication
 	github.com/fsnotify/fsnotify v1.9.0 // file watcher
 	github.com/gin-gonic/gin v1.11.0 // api server
-	github.com/go-acme/lego/v4 v4.29.0 // acme client
-	github.com/go-playground/validator/v10 v10.28.0 // validator
+	github.com/go-acme/lego/v4 v4.30.1 // acme client
+	github.com/go-playground/validator/v10 v10.30.1 // validator
 	github.com/gobwas/glob v0.2.3 // glob matcher for route rules
 	github.com/gorilla/websocket v1.5.3 // websocket for API and agent
-	github.com/gotify/server/v2 v2.7.3 // reference the Message struct for json response
+	github.com/gotify/server/v2 v2.8.0 // reference the Message struct for json response
 	github.com/lithammer/fuzzysearch v1.1.8 // fuzzy search for searching icons and filtering metrics
 	github.com/pires/go-proxyproto v0.8.1 // proxy protocol support
 	github.com/puzpuzpuz/xsync/v4 v4.2.0 // lock free map for concurrent operations
 	github.com/rs/zerolog v1.34.0 // logging
 	github.com/vincent-petithory/dataurl v1.0.0 // data url for fav icon
-	golang.org/x/crypto v0.45.0 // encrypting password with bcrypt
-	golang.org/x/net v0.47.0 // HTTP header utilities
-	golang.org/x/oauth2 v0.33.0 // oauth2 authentication
-	golang.org/x/sync v0.18.0
+	golang.org/x/crypto v0.46.0 // encrypting password with bcrypt
+	golang.org/x/net v0.48.0 // HTTP header utilities
+	golang.org/x/oauth2 v0.34.0 // oauth2 authentication
+	golang.org/x/sync v0.19.0 // errgroup and singleflight for concurrent operations
 	golang.org/x/time v0.14.0 // time utilities
 )
 
 require (
 	github.com/bytedance/gopkg v0.1.3 // xxhash64 for fast hash
 	github.com/bytedance/sonic v1.14.2 // fast json parsing
-	github.com/docker/cli v29.1.2+incompatible // needs docker/cli/cli/connhelper connection helper for docker client
-	github.com/goccy/go-yaml v1.19.0 // yaml parsing for different config files
+	github.com/docker/cli v29.1.3+incompatible // needs docker/cli/cli/connhelper connection helper for docker client
+	github.com/goccy/go-yaml v1.19.1 // yaml parsing for different config files
 	github.com/golang-jwt/jwt/v5 v5.3.0 // jwt authentication
-	github.com/luthermonson/go-proxmox v0.2.3 // proxmox API client
+	github.com/luthermonson/go-proxmox v0.3.1 // proxmox API client
 	github.com/moby/moby/api v1.52.0 // docker API
 	github.com/moby/moby/client v0.2.1 // docker client
 	github.com/oschwald/maxminddb-golang v1.13.1 // maxminddb for geoip database
-	github.com/quic-go/quic-go v0.57.1 // http3 support
-	github.com/shirou/gopsutil/v4 v4.25.11 // system information
+	github.com/quic-go/quic-go v0.58.0 // http3 support
+	github.com/shirou/gopsutil/v4 v4.25.12 // system information
 	github.com/spf13/afero v1.15.0 // afero for file system operations
 	github.com/stretchr/testify v1.11.1 // testing framework
 	github.com/valyala/fasthttp v1.68.0 // fast http for health check
 	github.com/yusing/ds v0.3.1 // data structures and algorithms
-	github.com/yusing/godoxy/agent v0.0.0-20251123034604-fac3d67a5116
-	github.com/yusing/godoxy/internal/dnsproviders v0.0.0-20251123034604-fac3d67a5116
+	github.com/yusing/godoxy/agent v0.0.0-20260104140148-1c2515cb298d
+	github.com/yusing/godoxy/internal/dnsproviders v0.0.0-20260104140148-1c2515cb298d
 	github.com/yusing/gointernals v0.1.16
 	github.com/yusing/goutils v0.7.0
+	github.com/yusing/goutils/http/reverseproxy v0.0.0-20260103043911-785deb23bd64
+	github.com/yusing/goutils/http/websocket v0.0.0-20260103043911-785deb23bd64
+	github.com/yusing/goutils/server v0.0.0-20260103043911-785deb23bd64
 )
 
 require (
-	cloud.google.com/go/auth v0.17.0 // indirect
+	cloud.google.com/go/auth v0.18.0 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
 	cloud.google.com/go/compute/metadata v0.9.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 // indirect
@@ -79,7 +83,7 @@ require (
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.11 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.12 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.3 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -89,7 +93,7 @@ require (
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.7 // indirect
-	github.com/googleapis/gax-go/v2 v2.15.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.16.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-retryablehttp v0.7.8 // indirect
 	github.com/jinzhu/copier v0.4.0 // indirect
@@ -99,7 +103,7 @@ require (
 	github.com/magefile/mage v1.15.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/miekg/dns v1.1.68 // indirect
+	github.com/miekg/dns v1.1.69 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
@@ -116,25 +120,25 @@ require (
 	github.com/samber/lo v1.52.0 // indirect
 	github.com/samber/slog-common v0.19.0 // indirect
 	github.com/samber/slog-zerolog/v2 v2.9.0 // indirect
-	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.35 // indirect
+	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.36 // indirect
 	github.com/sirupsen/logrus v1.9.4-0.20230606125235-dd1b4c2e81af // indirect
 	github.com/sony/gobreaker v1.0.0 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0
-	go.opentelemetry.io/otel v1.38.0 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0
+	go.opentelemetry.io/otel v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
 	go.uber.org/atomic v1.11.0
 	go.uber.org/ratelimit v0.3.1 // indirect
-	golang.org/x/mod v0.30.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
-	golang.org/x/text v0.31.0 // indirect
-	golang.org/x/tools v0.39.0 // indirect
-	google.golang.org/api v0.257.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217 // indirect
-	google.golang.org/grpc v1.77.0 // indirect
-	google.golang.org/protobuf v1.36.10 // indirect
+	golang.org/x/mod v0.31.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	golang.org/x/tools v0.40.0 // indirect
+	google.golang.org/api v0.258.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b // indirect
+	google.golang.org/grpc v1.78.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
@@ -143,26 +147,36 @@ require (
 require (
 	github.com/akamai/AkamaiOPEN-edgegrid-golang/v11 v11.1.0 // indirect
 	github.com/andybalholm/brotli v1.2.0 // indirect
+	github.com/boombuler/barcode v1.1.0 // indirect
 	github.com/bytedance/sonic/loader v0.4.0 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/containerd/errdefs v1.0.0 // indirect
 	github.com/containerd/errdefs/pkg v0.3.0 // indirect
 	github.com/fatih/color v1.18.0 // indirect
+	github.com/fatih/structs v1.1.0 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/go-ozzo/ozzo-validation/v4 v4.3.0 // indirect
-	github.com/go-resty/resty/v2 v2.17.0 // indirect
+	github.com/go-resty/resty/v2 v2.17.1 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/google/go-querystring v1.2.0 // indirect
 	github.com/klauspost/compress v1.18.2 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
-	github.com/linode/linodego v1.61.0 // indirect
+	github.com/kolo/xmlrpc v0.0.0-20220921171641-a4b6fa1dd06b // indirect
+	github.com/linode/linodego v1.63.0 // indirect
 	github.com/lufia/plan9stats v0.0.0-20251013123823-9fd1530e3ec3 // indirect
-	github.com/nrdcg/oci-go-sdk/common/v1065 v1065.105.0 // indirect
-	github.com/nrdcg/oci-go-sdk/dns/v1065 v1065.105.0 // indirect
+	github.com/nrdcg/goinwx v0.12.0 // indirect
+	github.com/nrdcg/oci-go-sdk/common/v1065 v1065.105.2 // indirect
+	github.com/nrdcg/oci-go-sdk/dns/v1065 v1065.105.2 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
+	github.com/pion/dtls/v3 v3.0.10 // indirect
+	github.com/pion/logging v0.2.4 // indirect
+	github.com/pion/transport/v4 v4.0.1 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
+	github.com/pquerna/otp v1.5.0 // indirect
 	github.com/stretchr/objx v0.5.3 // indirect
 	github.com/tklauser/go-sysconf v0.3.16 // indirect
 	github.com/tklauser/numcpus v0.11.0 // indirect
@@ -170,9 +184,7 @@ require (
 	github.com/ugorji/go/codec v1.3.1 // indirect
 	github.com/ulikunitz/xz v0.5.15 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/vultr/govultr/v3 v3.25.0 // indirect
+	github.com/vultr/govultr/v3 v3.26.1 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	golang.org/x/arch v0.23.0 // indirect
-	google.golang.org/genproto v0.0.0-20251111163417-95abcf5c77ba // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20251111163417-95abcf5c77ba // indirect
 )

go.sum

@@ -1,5 +1,5 @@
-cloud.google.com/go/auth v0.17.0 h1:74yCm7hCj2rUyyAocqnFzsAYXgJhrG26XCFimrc/Kz4=
-cloud.google.com/go/auth v0.17.0/go.mod h1:6wv/t5/6rOPAX4fJiRjKkJCvswLwdet7G8+UGXt7nCQ=
+cloud.google.com/go/auth v0.18.0 h1:wnqy5hrv7p3k7cShwAU/Br3nzod7fxoqG+k0VZ+/Pk0=
+cloud.google.com/go/auth v0.18.0/go.mod h1:wwkPM1AgE1f2u6dG443MiWoD8C3BtOywNsUMcUTVDRo=
 cloud.google.com/go/auth/oauth2adapt v0.2.8 h1:keo8NaayQZ6wimpNSmW5OPc283g65QNIiLpZnkHRbnc=
 cloud.google.com/go/auth/oauth2adapt v0.2.8/go.mod h1:XQ9y31RkqZCcwJWNSx2Xvric3RrU88hAYYbjDWYDL+c=
 cloud.google.com/go/compute/metadata v0.9.0 h1:pDUj4QMoPejqq20dK0Pg2N4yG9zIkYGdBtwLoEkH9Zs=
@@ -44,6 +44,9 @@ github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3d
 github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/benbjohnson/clock v1.3.5 h1:VvXlSJBzZpA/zum6Sj74hxwYI2DIxRWuNIoXAzHZz5o=
 github.com/benbjohnson/clock v1.3.5/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
+github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
+github.com/boombuler/barcode v1.1.0 h1:ChaYjBR63fr4LFyGn8E8nt7dBSt3MiU3zMOZqFvVkHo=
+github.com/boombuler/barcode v1.1.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/buger/goterm v1.0.4 h1:Z9YvGmOih81P0FbVtEYTFF6YsSgxSUKEhf/f9bTMXbY=
 github.com/buger/goterm v1.0.4/go.mod h1:HiFWV3xnkolgrBV3mY8m0X0Pumt4zg4QhbdOzQtB8tE=
 github.com/bytedance/gopkg v0.1.3 h1:TPBSwH8RsouGCBcMBktLt1AymVo2TVsBVCY4b6TnZ/M=
@@ -54,6 +57,8 @@ github.com/bytedance/sonic/loader v0.4.0 h1:olZ7lEqcxtZygCK9EKYKADnpQoYkRQxaeY2N
 github.com/bytedance/sonic/loader v0.4.0/go.mod h1:AR4NYCk5DdzZizZ5djGqQ92eEhCCcdf5x77udYiSJRo=
 github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
 github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cloudwego/base64x v0.1.6 h1:t11wG9AECkCDk5fMSoxmufanudBtJ+/HemLstXDLI2M=
 github.com/cloudwego/base64x v0.1.6/go.mod h1:OFcloc187FXDaYHvrNIjxSe8ncn0OOM8gEHfghB2IPU=
 github.com/containerd/errdefs v1.0.0 h1:tg5yIfIlQIrxYtu9ajqY42W3lpS19XqdxRQeEwYG8PI=
@@ -71,8 +76,8 @@ github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5Qvfr
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
 github.com/djherbis/times v1.6.0 h1:w2ctJ92J8fBvWPxugmXIv7Nz7Q3iDMKNx9v5ocVH20c=
 github.com/djherbis/times v1.6.0/go.mod h1:gOHeRAz2h+VJNZ5Gmc/o7iD9k4wW7NMVqieYCY99oc0=
-github.com/docker/cli v29.1.2+incompatible h1:s4QI7drXpIo78OM+CwuthPsO5kCf8cpNsck5PsLVTH8=
-github.com/docker/cli v29.1.2+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
+github.com/docker/cli v29.1.3+incompatible h1:+kz9uDWgs+mAaIZojWfFt4d53/jv0ZUOOoSh5ZnH36c=
+github.com/docker/cli v29.1.3+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/go-connections v0.6.0 h1:LlMG9azAe1TqfR7sO+NJttz1gy6KO7VJBh+pMmjSD94=
 github.com/docker/go-connections v0.6.0/go.mod h1:AahvXYshr6JgfUJGdDCs2b5EZG/vmaMAntpSFH5BFKE=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
@@ -83,18 +88,20 @@ github.com/elliotwutingfeng/asciiset v0.0.0-20230602022725-51bbb787efab h1:h1Ugj
 github.com/elliotwutingfeng/asciiset v0.0.0-20230602022725-51bbb787efab/go.mod h1:GLo/8fDswSAniFG+BFIaiSPcK610jyzgEhWYPQwuQdw=
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
 github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
+github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
+github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
 github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
-github.com/gabriel-vasile/mimetype v1.4.11 h1:AQvxbp830wPhHTqc1u7nzoLT+ZFxGY7emj5DR5DYFik=
-github.com/gabriel-vasile/mimetype v1.4.11/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
+github.com/gabriel-vasile/mimetype v1.4.12 h1:e9hWvmLYvtp846tLHam2o++qitpguFiYCKbn0w9jyqw=
+github.com/gabriel-vasile/mimetype v1.4.12/go.mod h1:d+9Oxyo1wTzWdyVUPMmXFvp4F9tea18J8ufA774AB3s=
 github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
 github.com/gin-contrib/sse v1.1.0/go.mod h1:hxRZ5gVpWMT7Z0B0gSNYqqsSCNIJMjzvm6fqCz9vjwM=
 github.com/gin-gonic/gin v1.11.0 h1:OW/6PLjyusp2PPXtyxKHU0RbX6I/l28FTdDlae5ueWk=
 github.com/gin-gonic/gin v1.11.0/go.mod h1:+iq/FyxlGzII0KHiBGjuNn4UNENUlKbGlNmc+W50Dls=
-github.com/go-acme/lego/v4 v4.29.0 h1:vKMEtvoKb0gOO9rWO9zMBwE4CgI5A5CWDsK4QEeBqzo=
-github.com/go-acme/lego/v4 v4.29.0/go.mod h1:rnYyDj1NdDd9y1dHkVuUS97j7bfe9I61+oY9odKaHM8=
+github.com/go-acme/lego/v4 v4.30.1 h1:tmb6U0lvy8Mc3lQbqKwTat7oAhE8FUYNJ3D0gSg6pJU=
+github.com/go-acme/lego/v4 v4.30.1/go.mod h1:V7m/Ip+EeFkjOe028+zeH+SwWtESxw1LHelwMIfAjm4=
 github.com/go-jose/go-jose/v4 v4.1.3 h1:CVLmWDhDVRa6Mi/IgCgaopNosCaHz7zrMeF9MlZRkrs=
 github.com/go-jose/go-jose/v4 v4.1.3/go.mod h1:x4oUasVrzR7071A4TnHLGSPpNOm2a21K9Kf04k1rs08=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
@@ -113,18 +120,20 @@ github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/o
 github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
 github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-playground/validator/v10 v10.28.0 h1:Q7ibns33JjyW48gHkuFT91qX48KG0ktULL6FgHdG688=
-github.com/go-playground/validator/v10 v10.28.0/go.mod h1:GoI6I1SjPBh9p7ykNE/yj3fFYbyDOpwMn5KXd+m2hUU=
-github.com/go-resty/resty/v2 v2.17.0 h1:pW9DeXcaL4Rrym4EZ8v7L19zZiIlWPg5YXAcVmt+gN0=
-github.com/go-resty/resty/v2 v2.17.0/go.mod h1:kCKZ3wWmwJaNc7S29BRtUhJwy7iqmn+2mLtQrOyQlVA=
+github.com/go-playground/validator/v10 v10.30.1 h1:f3zDSN/zOma+w6+1Wswgd9fLkdwy06ntQJp0BBvFG0w=
+github.com/go-playground/validator/v10 v10.30.1/go.mod h1:oSuBIQzuJxL//3MelwSLD5hc2Tu889bF0Idm9Dg26cM=
+github.com/go-resty/resty/v2 v2.17.1 h1:x3aMpHK1YM9e4va/TMDRlusDDoZiQ+ViDu/WpA6xTM4=
+github.com/go-resty/resty/v2 v2.17.1/go.mod h1:kCKZ3wWmwJaNc7S29BRtUhJwy7iqmn+2mLtQrOyQlVA=
 github.com/go-test/deep v1.0.8 h1:TDsG77qcSprGbC6vTN8OuXp5g+J+b5Pcguhf7Zt61VM=
 github.com/go-test/deep v1.0.8/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
+github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9LvH92wZUgs=
+github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
 github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
 github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
 github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
-github.com/goccy/go-yaml v1.19.0 h1:EmkZ9RIsX+Uq4DYFowegAuJo8+xdX3T/2dwNPXbxEYE=
-github.com/goccy/go-yaml v1.19.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
+github.com/goccy/go-yaml v1.19.1 h1:3rG3+v8pkhRqoQ/88NYNMHYVGYztCOCIZ7UQhu7H+NE=
+github.com/goccy/go-yaml v1.19.1/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gofrs/flock v0.13.0 h1:95JolYOvGMqeH31+FC7D2+uULf6mG61mEZ/A8dRYMzw=
 github.com/gofrs/flock v0.13.0/go.mod h1:jxeyy9R1auM5S6JYDBhDt+E2TCo7DkratH4Pgi8P+Z0=
@@ -132,12 +141,11 @@ github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9v
 github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
 github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
-github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
-github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
+github.com/google/go-querystring v1.2.0 h1:yhqkPbu2/OH+V9BfpCVPZkNmUXhb2gBxJArfhIxNtP0=
+github.com/google/go-querystring v1.2.0/go.mod h1:8IFJqpSRITyJ8QhQ13bmbeMBDfmeEJZD5A0egEOmkqU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/s2a-go v0.1.9 h1:LGD7gtMgezd8a/Xak7mEWL0PjoTQFvpRudN895yqKW0=
 github.com/google/s2a-go v0.1.9/go.mod h1:YA0Ei2ZQL3acow2O62kdp9UlnvMmU7kA6Eutn0dXayM=
@@ -145,12 +153,12 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/enterprise-certificate-proxy v0.3.7 h1:zrn2Ee/nWmHulBx5sAVrGgAa0f2/R35S4DJwfFaUPFQ=
 github.com/googleapis/enterprise-certificate-proxy v0.3.7/go.mod h1:MkHOF77EYAE7qfSuSS9PU6g4Nt4e11cnsDUowfwewLA=
-github.com/googleapis/gax-go/v2 v2.15.0 h1:SyjDc1mGgZU5LncH8gimWo9lW1DtIfPibOG81vgd/bo=
-github.com/googleapis/gax-go/v2 v2.15.0/go.mod h1:zVVkkxAQHa1RQpg9z2AUCMnKhi0Qld9rcmyfL1OZhoc=
+github.com/googleapis/gax-go/v2 v2.16.0 h1:iHbQmKLLZrexmb0OSsNGTeSTS0HO4YvFOG8g5E4Zd0Y=
+github.com/googleapis/gax-go/v2 v2.16.0/go.mod h1:o1vfQjjNZn4+dPnRdl/4ZD7S9414Y4xA+a/6Icj6l14=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/gotify/server/v2 v2.7.3 h1:nro/ZnxdlZFvxFcw9LREGA8zdk6CK744azwhuhX/A4g=
-github.com/gotify/server/v2 v2.7.3/go.mod h1:VAtE1RIc/2j886PYs9WPQbMjqbFsoyQ0G8IdFtnAxU0=
+github.com/gotify/server/v2 v2.8.0 h1:E3UDDn/3rFZi1sjZfbuhXNnxJP3ACZhdcw/iySegPRA=
+github.com/gotify/server/v2 v2.8.0/go.mod h1:6ci5adxcE2hf1v+2oowKiQmixOxXV8vU+CRLKP6sqZA=
 github.com/h2non/gock v1.2.0 h1:K6ol8rfrRkUOefooBC8elXoaNGYkpp7y2qcxGG6BzUE=
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@@ -173,6 +181,8 @@ github.com/klauspost/compress v1.18.2 h1:iiPHWW0YrcFgpBYhsA6D1+fqHssJscY/Tm/y2Uq
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@@ -181,14 +191,14 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
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@@ -200,8 +210,8 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
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@@ -217,10 +227,12 @@ github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9G
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@@ -235,6 +247,12 @@ github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0
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@@ -247,12 +265,14 @@ github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRI
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@@ -264,8 +284,8 @@ github.com/samber/slog-common v0.19.0 h1:fNcZb8B2uOLooeYwFpAlKjkQTUafdjfqKcwcC89
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@@ -303,8 +323,8 @@ github.com/valyala/fasthttp v1.68.0 h1:v12Nx16iepr8r9ySOwqI+5RBJ/DqTxhOy1HrHoDFn
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@@ -320,22 +340,22 @@ go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ
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-go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0 h1:RbKq8BG0FI8OiXhBfcRtqqHcZcka+gU3cskNuf05R18=
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-go.opentelemetry.io/otel v1.38.0 h1:RkfdswUDRimDg0m2Az18RKOsnI8UDzppJAtj01/Ymk8=
-go.opentelemetry.io/otel v1.38.0/go.mod h1:zcmtmQ1+YmQM9wrNsTGV/q/uyusom3P8RxwExxkZhjM=
-go.opentelemetry.io/otel/metric v1.38.0 h1:Kl6lzIYGAh5M159u9NgiRkmoMKjvbsKtYRwgfrA6WpA=
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+go.opentelemetry.io/otel/sdk v1.39.0 h1:nMLYcjVsvdui1B/4FRkwjzoRVsMK8uL/cj0OyhKzt18=
+go.opentelemetry.io/otel/sdk v1.39.0/go.mod h1:vDojkC4/jsTJsE+kh+LXYQlbL8CgrEcwmt1ENZszdJE=
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+go.opentelemetry.io/otel/trace v1.39.0 h1:2d2vfpEDmCJ5zVYz7ijaJdOF59xLomrvj7bjt6/qCJI=
+go.opentelemetry.io/otel/trace v1.39.0/go.mod h1:88w4/PnZSazkGzz/w84VHpQafiU4EtqqlVdxWy+rNOA=
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
 go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
-go.uber.org/mock v0.6.0 h1:hyF9dfmbgIX5EfOdasqLsWD6xqpNZlXblLB/Dbnwv3Y=
-go.uber.org/mock v0.6.0/go.mod h1:KiVJ4BqZJaMj4svdfmHM0AUx4NJYO8ZNpPnZn1Z+BBU=
+go.uber.org/mock v0.5.2 h1:LbtPTcP8A5k9WPXj54PPPbjcI4Y6lhyOZXn+VS7wNko=
+go.uber.org/mock v0.5.2/go.mod h1:wLlUxC2vVTPTaE3UD51E0BGOAElKrILxhVSDYQLld5o=
 go.uber.org/ratelimit v0.3.1 h1:K4qVE+byfv/B3tC+4nYWP7v/6SimcO7HzHekoMNBma0=
 go.uber.org/ratelimit v0.3.1/go.mod h1:6euWsTB6U/Nb3X++xEUXA8ciPJvr19Q/0h1+oDcJhRk=
 golang.org/x/arch v0.23.0 h1:lKF64A2jF6Zd8L0knGltUnegD62JMFBiCPBmQpToHhg=
@@ -346,15 +366,15 @@ golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliY
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
-golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
-golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
+golang.org/x/crypto v0.46.0 h1:cKRW/pmt1pKAfetfu+RCEvjvZkA9RimPbh7bhFjGVBU=
+golang.org/x/crypto v0.46.0/go.mod h1:Evb/oLKmMraqjZ2iQTwDwvCtJkczlDuTmdJXoZVzqU0=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.30.0 h1:fDEXFVZ/fmCKProc/yAXXUijritrDzahmwwefnjoPFk=
-golang.org/x/mod v0.30.0/go.mod h1:lAsf5O2EvJeSFMiBxXDki7sCgAxEUcZHXoXMKT4GJKc=
+golang.org/x/mod v0.31.0 h1:HaW9xtz0+kOcWKwli0ZXy79Ix+UW/vOfmWI5QVd2tgI=
+golang.org/x/mod v0.31.0/go.mod h1:43JraMp9cGx1Rx3AqioxrbrhNsLl2l/iNAvuBkrezpg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
@@ -364,10 +384,10 @@ golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
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-golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
-golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
-golang.org/x/oauth2 v0.33.0 h1:4Q+qn+E5z8gPRJfmRy7C2gGG3T4jIprK6aSYgTXGRpo=
-golang.org/x/oauth2 v0.33.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
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 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -375,8 +395,8 @@ golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
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-golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
-golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -396,8 +416,8 @@ golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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-golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
-golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
+golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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@@ -416,8 +436,8 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
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-golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
-golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
+golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
+golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=
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@@ -426,24 +446,23 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
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 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

internal/acl/README.md

@@ -0,0 +1,282 @@
+# ACL (Access Control List)
+
+Access control at the TCP connection level with IP/CIDR, timezone, and country-based filtering.
+
+## Overview
+
+The ACL package provides network-level access control by wrapping TCP listeners and validating incoming connections against configurable allow/deny rules. It integrates with MaxMind GeoIP for geographic-based filtering and supports access logging with notification batching.
+
+### Primary consumers
+
+- `internal/entrypoint` - Wraps the main TCP listener for connection filtering
+- Operators - Configure rules via YAML configuration
+
+### Non-goals
+
+- HTTP request-level filtering (handled by middleware)
+- Authentication or authorization (see `internal/auth`)
+- VPN or tunnel integration
+
+### Stability
+
+Stable internal package. The public API is the `Config` struct and its methods.
+
+## Public API
+
+### Exported types
+
+```go
+type Config struct {
+    Default    string                     // "allow" or "deny" (default: "allow")
+    AllowLocal *bool                      // Allow private/loopback IPs (default: true)
+    Allow      Matchers                   // Allow rules
+    Deny       Matchers                   // Deny rules
+    Log        *accesslog.ACLLoggerConfig // Access logging configuration
+
+    Notify struct {
+        To             []string      // Notification providers
+        Interval       time.Duration // Notification frequency (default: 1m)
+        IncludeAllowed *bool         // Include allowed in notifications (default: false)
+    }
+}
+```
+
+```go
+type Matcher struct {
+    match MatcherFunc
+}
+```
+
+```go
+type Matchers []Matcher
+```
+
+### Exported functions and methods
+
+```go
+func (c *Config) Validate() gperr.Error
+```
+
+Validates configuration and sets defaults. Must be called before `Start`.
+
+```go
+func (c *Config) Start(parent task.Parent) gperr.Error
+```
+
+Initializes the ACL, starts the logger and notification goroutines.
+
+```go
+func (c *Config) IPAllowed(ip net.IP) bool
+```
+
+Returns true if the IP is allowed based on configured rules. Performs caching and GeoIP lookup if needed.
+
+```go
+func (c *Config) WrapTCP(lis net.Listener) net.Listener
+```
+
+Wraps a `net.Listener` to filter connections by IP.
+
+```go
+func (matcher *Matcher) Parse(s string) error
+```
+
+Parses a matcher string in the format `{type}:{value}`. Supported types: `ip`, `cidr`, `tz`, `country`.
+
+## Architecture
+
+### Core components
+
+```mermaid
+graph TD
+    A[TCP Listener] --> B[TCPListener Wrapper]
+    B --> C{IP Allowed?}
+    C -->|Yes| D[Accept Connection]
+    C -->|No| E[Close Connection]
+
+    F[Config] --> G[Validate]
+    G --> H[Start]
+    H --> I[Matcher Evaluation]
+    I --> C
+
+    J[MaxMind] -.-> K[IP Lookup]
+    K -.-> I
+
+    L[Access Logger] -.-> M[Log & Notify]
+    M -.-> B
+```
+
+### Connection filtering flow
+
+```mermaid
+sequenceDiagram
+    participant Client
+    participant TCPListener
+    participant Config
+    participant MaxMind
+    participant Logger
+
+    Client->>TCPListener: Connection Request
+    TCPListener->>Config: IPAllowed(clientIP)
+
+    alt Loopback IP
+        Config-->>TCPListener: true
+    else Private IP (allow_local)
+        Config-->>TCPListener: true
+    else Cached Result
+        Config-->>TCPListener: Cached Result
+    else Evaluate Allow Rules
+        Config->>Config: Check Allow list
+        alt Matches
+            Config->>Config: Cache true
+            Config-->>TCPListener: Allowed
+        else Evaluate Deny Rules
+            Config->>Config: Check Deny list
+            alt Matches
+                Config->>Config: Cache false
+                Config-->>TCPListener: Denied
+            else Default Action
+                Config->>MaxMind: Lookup GeoIP
+                MaxMind-->>Config: IPInfo
+                Config->>Config: Apply default rule
+                Config->>Config: Cache result
+                Config-->>TCPListener: Result
+            end
+        end
+    end
+
+    alt Logging enabled
+        Config->>Logger: Log access attempt
+    end
+```
+
+### Matcher types
+
+| Type     | Format            | Example               |
+| -------- | ----------------- | --------------------- |
+| IP       | `ip:address`      | `ip:192.168.1.1`      |
+| CIDR     | `cidr:network`    | `cidr:192.168.0.0/16` |
+| TimeZone | `tz:timezone`     | `tz:Asia/Shanghai`    |
+| Country  | `country:ISOCode` | `country:GB`          |
+
+## Configuration Surface
+
+### Config sources
+
+Configuration is loaded from `config/config.yml` under the `acl` key.
+
+### Schema
+
+```yaml
+acl:
+  default: "allow"              # "allow" or "deny"
+  allow_local: true             # Allow private/loopback IPs
+  log:
+    log_allowed: false          # Log allowed connections
+  notify:
+    to: ["gotify"]              # Notification providers
+    interval: "1m"              # Notification interval
+    include_allowed: false      # Include allowed in notifications
+```
+
+### Hot-reloading
+
+Configuration requires restart. The ACL does not support dynamic rule updates.
+
+## Dependency and Integration Map
+
+### Internal dependencies
+
+- `internal/maxmind` - IP geolocation lookup
+- `internal/logging/accesslog` - Access logging
+- `internal/notif` - Notifications
+- `internal/task/task.go` - Lifetime management
+
+### Integration points
+
+```go
+// Entrypoint uses ACL to wrap the TCP listener
+aclListener := config.ACL.WrapTCP(listener)
+http.Server.Serve(aclListener, entrypoint)
+```
+
+## Observability
+
+### Logs
+
+- `ACL started` - Configuration summary on start
+- `log_notify_loop` - Access attempts (allowed/denied)
+
+Log levels: `Info` for startup, `Debug` for client closure.
+
+### Metrics
+
+No metrics are currently exposed.
+
+## Security Considerations
+
+- Loopback and private IPs are always allowed unless explicitly denied
+- Cache TTL is 1 minute to limit memory usage
+- Notification channel has a buffer of 100 to prevent blocking
+- Failed connections are immediately closed without response
+
+## Failure Modes and Recovery
+
+| Failure                           | Behavior                              | Recovery                                      |
+| --------------------------------- | ------------------------------------- | --------------------------------------------- |
+| Invalid matcher syntax            | Validation fails on startup           | Fix configuration syntax                      |
+| MaxMind database unavailable      | GeoIP lookups return unknown location | Default action applies; cache hit still works |
+| Notification provider unavailable | Notification dropped                  | Error logged, continues operation             |
+| Cache full                        | No eviction, uses Go map              | No action needed                              |
+
+## Usage Examples
+
+### Basic configuration
+
+```go
+aclConfig := &acl.Config{
+    Default:    "allow",
+    AllowLocal: ptr(true),
+    Allow: acl.Matchers{
+        {match: matchIP(net.ParseIP("192.168.1.0/24"))},
+    },
+    Deny: acl.Matchers{
+        {match: matchISOCode("CN")},
+    },
+}
+if err := aclConfig.Validate(); err != nil {
+    log.Fatal(err)
+}
+if err := aclConfig.Start(parent); err != nil {
+    log.Fatal(err)
+}
+```
+
+### Wrapping a TCP listener
+
+```go
+listener, err := net.Listen("tcp", ":443")
+if err != nil {
+    log.Fatal(err)
+}
+
+// Wrap with ACL
+aclListener := aclConfig.WrapTCP(listener)
+
+// Use with HTTP server
+server := &http.Server{}
+server.Serve(aclListener)
+```
+
+### Creating custom matchers
+
+```go
+matcher := &acl.Matcher{}
+err := matcher.Parse("country:US")
+if err != nil {
+    log.Fatal(err)
+}
+
+// Use the matcher
+allowed := matcher.match(ipInfo)
+```

internal/agentpool/README.md

@@ -0,0 +1,281 @@
+# Agent Pool
+
+Thread-safe pool for managing remote Docker agent connections.
+
+## Overview
+
+The agentpool package provides a centralized pool for storing and retrieving remote agent configurations. It enables GoDoxy to connect to Docker hosts via agent connections instead of direct socket access, enabling secure remote container management.
+
+### Primary consumers
+
+- `internal/route/provider` - Creates agent-based route providers
+- `internal/docker` - Manages agent-based Docker client connections
+- Configuration loading during startup
+
+### Non-goals
+
+- Agent lifecycle management (handled by `agent/pkg/agent`)
+- Agent health monitoring
+- Agent authentication/authorization
+
+### Stability
+
+Stable internal package. The pool uses `xsync.Map` for lock-free concurrent access.
+
+## Public API
+
+### Exported types
+
+```go
+type Agent struct {
+    *agent.AgentConfig
+    httpClient       *http.Client
+    fasthttpHcClient *fasthttp.Client
+}
+```
+
+### Exported functions
+
+```go
+func Add(cfg *agent.AgentConfig) (added bool)
+```
+
+Adds an agent to the pool. Returns `true` if added, `false` if already exists. Uses `LoadOrCompute` to prevent duplicates.
+
+```go
+func Has(cfg *agent.AgentConfig) bool
+```
+
+Checks if an agent exists in the pool.
+
+```go
+func Remove(cfg *agent.AgentConfig)
+```
+
+Removes an agent from the pool.
+
+```go
+func RemoveAll()
+```
+
+Removes all agents from the pool. Called during configuration reload.
+
+```go
+func Get(agentAddrOrDockerHost string) (*Agent, bool)
+```
+
+Retrieves an agent by address or Docker host URL. Automatically detects if the input is an agent address or Docker host URL and resolves accordingly.
+
+```go
+func GetAgent(name string) (*Agent, bool)
+```
+
+Retrieves an agent by name. O(n) iteration over pool contents.
+
+```go
+func List() []*Agent
+```
+
+Returns all agents as a slice. Creates a new copy for thread safety.
+
+```go
+func Iter() iter.Seq2[string, *Agent]
+```
+
+Returns an iterator over all agents. Uses `xsync.Map.Range`.
+
+```go
+func Num() int
+```
+
+Returns the number of agents in the pool.
+
+```go
+func (agent *Agent) HTTPClient() *http.Client
+```
+
+Returns an HTTP client configured for the agent.
+
+## Architecture
+
+### Core components
+
+```mermaid
+graph TD
+    A[Agent Config] --> B[Add to Pool]
+    B --> C[xsync.Map Storage]
+    C --> D{Get Request}
+    D -->|By Address| E[Load from map]
+    D -->|By Docker Host| F[Resolve agent addr]
+    D -->|By Name| G[Iterate & match]
+
+    H[Docker Client] --> I[Get Agent]
+    I --> C
+    I --> J[HTTP Client]
+    J --> K[Agent Connection]
+
+    L[Route Provider] --> M[List Agents]
+    M --> C
+```
+
+### Thread safety model
+
+The pool uses `xsync.Map[string, *Agent]` for concurrent-safe operations:
+
+- `Add`: `LoadOrCompute` prevents race conditions and duplicates
+- `Get`: Lock-free read operations
+- `Iter`: Consistent snapshot iteration via `Range`
+- `Remove`: Thread-safe deletion
+
+### Test mode
+
+When running tests (binary ends with `.test`), a test agent is automatically added:
+
+```go
+func init() {
+    if strings.HasSuffix(os.Args[0], ".test") {
+        agentPool.Store("test-agent", &Agent{
+            AgentConfig: &agent.AgentConfig{
+                Addr: "test-agent",
+            },
+        })
+    }
+}
+```
+
+## Configuration Surface
+
+No direct configuration. Agents are added via configuration loading from `config/config.yml`:
+
+```yaml
+providers:
+  agents:
+    - addr: agent.example.com:443
+      name: remote-agent
+      tls:
+        ca_file: /path/to/ca.pem
+        cert_file: /path/to/cert.pem
+        key_file: /path/to/key.pem
+```
+
+## Dependency and Integration Map
+
+### Internal dependencies
+
+- `agent/pkg/agent` - Agent configuration and connection settings
+- `xsync/v4` - Concurrent map implementation
+
+### External dependencies
+
+- `valyala/fasthttp` - Fast HTTP client for agent communication
+
+### Integration points
+
+```go
+// Docker package uses agent pool for remote connections
+if agent.IsDockerHostAgent(host) {
+    a, ok := agentpool.Get(host)
+    if !ok {
+        panic(fmt.Errorf("agent %q not found", host))
+    }
+    opt := []client.Opt{
+        client.WithHost(agent.DockerHost),
+        client.WithHTTPClient(a.HTTPClient()),
+    }
+}
+```
+
+## Observability
+
+### Logs
+
+No specific logging in the agentpool package. Client creation/destruction is logged in the docker package.
+
+### Metrics
+
+No metrics are currently exposed.
+
+## Security Considerations
+
+- TLS configuration is loaded from agent configuration
+- Connection credentials are not stored in the pool after agent creation
+- HTTP clients are created per-request to ensure credential freshness
+
+## Failure Modes and Recovery
+
+| Failure              | Behavior             | Recovery                     |
+| -------------------- | -------------------- | ---------------------------- |
+| Agent not found      | Returns `nil, false` | Add agent to pool before use |
+| Duplicate add        | Returns `false`      | Existing agent is preserved  |
+| Test mode activation | Test agent added     | Only during test binaries    |
+
+## Performance Characteristics
+
+- O(1) lookup by address
+- O(n) iteration for name-based lookup
+- Pre-sized to 10 entries via `xsync.WithPresize(10)`
+- No locks required for read operations
+- HTTP clients are created per-call to ensure fresh connections
+
+## Usage Examples
+
+### Adding an agent
+
+```go
+agentConfig := &agent.AgentConfig{
+    Addr: "agent.example.com:443",
+    Name: "my-agent",
+}
+
+added := agentpool.Add(agentConfig)
+if !added {
+    log.Println("Agent already exists")
+}
+```
+
+### Retrieving an agent
+
+```go
+// By address
+agent, ok := agentpool.Get("agent.example.com:443")
+if !ok {
+    log.Fatal("Agent not found")
+}
+
+// By Docker host URL
+agent, ok := agentpool.Get("http://docker-host:2375")
+if !ok {
+    log.Fatal("Agent not found")
+}
+
+// By name
+agent, ok := agentpool.GetAgent("my-agent")
+if !ok {
+    log.Fatal("Agent not found")
+}
+```
+
+### Iterating over all agents
+
+```go
+for addr, agent := range agentpool.Iter() {
+    log.Printf("Agent: %s at %s", agent.Name, addr)
+}
+```
+
+### Using with Docker client
+
+```go
+// When creating a Docker client with an agent host
+if agent.IsDockerHostAgent(host) {
+    a, ok := agentpool.Get(host)
+    if !ok {
+        panic(fmt.Errorf("agent %q not found", host))
+    }
+    opt := []client.Opt{
+        client.WithHost(agent.DockerHost),
+        client.WithHTTPClient(a.HTTPClient()),
+    }
+    dockerClient, err := client.New(opt...)
+}
+```

internal/agentpool/agent.go

@@ -0,0 +1,54 @@
+package agentpool
+
+import (
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/valyala/fasthttp"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+)
+
+type Agent struct {
+	*agent.AgentConfig
+
+	httpClient       *http.Client
+	fasthttpHcClient *fasthttp.Client
+}
+
+func newAgent(cfg *agent.AgentConfig) *Agent {
+	transport := cfg.Transport()
+	transport.MaxIdleConns = 100
+	transport.MaxIdleConnsPerHost = 100
+	transport.ReadBufferSize = 16384
+	transport.WriteBufferSize = 16384
+
+	return &Agent{
+		AgentConfig: cfg,
+		httpClient: &http.Client{
+			Transport: transport,
+		},
+		fasthttpHcClient: &fasthttp.Client{
+			DialTimeout: func(addr string, timeout time.Duration) (net.Conn, error) {
+				if addr != agent.AgentHost+":443" {
+					return nil, &net.AddrError{Err: "invalid address", Addr: addr}
+				}
+				return net.DialTimeout("tcp", cfg.Addr, timeout)
+			},
+			TLSConfig:                     cfg.TLSConfig(),
+			ReadTimeout:                   5 * time.Second,
+			WriteTimeout:                  3 * time.Second,
+			DisableHeaderNamesNormalizing: true,
+			DisablePathNormalizing:        true,
+			NoDefaultUserAgentHeader:      true,
+			ReadBufferSize:                1024,
+			WriteBufferSize:               1024,
+		},
+	}
+}
+
+func (agent *Agent) HTTPClient() *http.Client {
+	return &http.Client{
+		Transport: agent.Transport(),
+	}
+}

internal/agentpool/http_requests.go

@@ -1,4 +1,4 @@
-package agent
+package agentpool
 
 import (
 	"context"
@@ -10,22 +10,22 @@ import (
 	"github.com/bytedance/sonic"
 	"github.com/gorilla/websocket"
 	"github.com/valyala/fasthttp"
-	httputils "github.com/yusing/goutils/http"
+	"github.com/yusing/godoxy/agent/pkg/agent"
 	"github.com/yusing/goutils/http/reverseproxy"
 )
 
-func (cfg *AgentConfig) Do(ctx context.Context, method, endpoint string, body io.Reader) (*http.Response, error) {
-	req, err := http.NewRequestWithContext(ctx, method, APIBaseURL+endpoint, body)
+func (cfg *Agent) Do(ctx context.Context, method, endpoint string, body io.Reader) (*http.Response, error) {
+	req, err := http.NewRequestWithContext(ctx, method, agent.APIBaseURL+endpoint, body)
 	if err != nil {
 		return nil, err
 	}
 	return cfg.httpClient.Do(req)
 }
 
-func (cfg *AgentConfig) Forward(req *http.Request, endpoint string) (*http.Response, error) {
-	req.URL.Host = AgentHost
+func (cfg *Agent) Forward(req *http.Request, endpoint string) (*http.Response, error) {
+	req.URL.Host = agent.AgentHost
 	req.URL.Scheme = "https"
-	req.URL.Path = APIEndpointBase + endpoint
+	req.URL.Path = agent.APIEndpointBase + endpoint
 	req.RequestURI = ""
 	resp, err := cfg.httpClient.Do(req)
 	if err != nil {
@@ -40,20 +40,20 @@ type HealthCheckResponse struct {
 	Latency time.Duration `json:"latency"`
 }
 
-func (cfg *AgentConfig) DoHealthCheck(timeout time.Duration, query string) (ret HealthCheckResponse, err error) {
+func (cfg *Agent) DoHealthCheck(timeout time.Duration, query string) (ret HealthCheckResponse, err error) {
 	req := fasthttp.AcquireRequest()
 	defer fasthttp.ReleaseRequest(req)
 
 	resp := fasthttp.AcquireResponse()
 	defer fasthttp.ReleaseResponse(resp)
 
-	req.SetRequestURI(APIBaseURL + EndpointHealth + "?" + query)
+	req.SetRequestURI(agent.APIBaseURL + agent.EndpointHealth + "?" + query)
 	req.Header.SetMethod(fasthttp.MethodGet)
 	req.Header.Set("Accept-Encoding", "identity")
 	req.SetConnectionClose()
 
 	start := time.Now()
-	err = cfg.fasthttpClientHealthCheck.DoTimeout(req, resp, timeout)
+	err = cfg.fasthttpHcClient.DoTimeout(req, resp, timeout)
 	ret.Latency = time.Since(start)
 	if err != nil {
 		return ret, err
@@ -71,30 +71,14 @@ func (cfg *AgentConfig) DoHealthCheck(timeout time.Duration, query string) (ret
 	return ret, nil
 }
 
-func (cfg *AgentConfig) fetchString(ctx context.Context, endpoint string) (string, int, error) {
-	resp, err := cfg.Do(ctx, "GET", endpoint, nil)
-	if err != nil {
-		return "", 0, err
-	}
-	defer resp.Body.Close()
-
-	data, release, err := httputils.ReadAllBody(resp)
-	if err != nil {
-		return "", 0, err
-	}
-	ret := string(data)
-	release(data)
-	return ret, resp.StatusCode, nil
-}
-
-func (cfg *AgentConfig) Websocket(ctx context.Context, endpoint string) (*websocket.Conn, *http.Response, error) {
+func (cfg *Agent) Websocket(ctx context.Context, endpoint string) (*websocket.Conn, *http.Response, error) {
 	transport := cfg.Transport()
 	dialer := websocket.Dialer{
 		NetDialContext:    transport.DialContext,
 		NetDialTLSContext: transport.DialTLSContext,
 	}
-	return dialer.DialContext(ctx, APIBaseURL+endpoint, http.Header{
-		"Host": {AgentHost},
+	return dialer.DialContext(ctx, agent.APIBaseURL+endpoint, http.Header{
+		"Host": {agent.AgentHost},
 	})
 }
 
@@ -102,9 +86,9 @@ func (cfg *AgentConfig) Websocket(ctx context.Context, endpoint string) (*websoc
 //
 // It will create a new request with the same context, method, and body, but with the agent host and scheme, and the endpoint
 // If the request has a query, it will be added to the proxy request's URL
-func (cfg *AgentConfig) ReverseProxy(w http.ResponseWriter, req *http.Request, endpoint string) {
-	rp := reverseproxy.NewReverseProxy("agent", AgentURL, cfg.Transport())
-	req.URL.Host = AgentHost
+func (cfg *Agent) ReverseProxy(w http.ResponseWriter, req *http.Request, endpoint string) {
+	rp := reverseproxy.NewReverseProxy("agent", agent.AgentURL, cfg.Transport())
+	req.URL.Host = agent.AgentHost
 	req.URL.Scheme = "https"
 	req.URL.Path = endpoint
 	req.RequestURI = ""

internal/agentpool/pool.go

@@ -0,0 +1,79 @@
+package agentpool
+
+import (
+	"iter"
+	"os"
+	"strings"
+
+	"github.com/puzpuzpuz/xsync/v4"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+)
+
+var agentPool = xsync.NewMap[string, *Agent](xsync.WithPresize(10))
+
+func init() {
+	if strings.HasSuffix(os.Args[0], ".test") {
+		agentPool.Store("test-agent", &Agent{
+			AgentConfig: &agent.AgentConfig{
+				Addr: "test-agent",
+			},
+		})
+	}
+}
+
+func Get(agentAddrOrDockerHost string) (*Agent, bool) {
+	if !agent.IsDockerHostAgent(agentAddrOrDockerHost) {
+		return getAgentByAddr(agentAddrOrDockerHost)
+	}
+	return getAgentByAddr(agent.GetAgentAddrFromDockerHost(agentAddrOrDockerHost))
+}
+
+func GetAgent(name string) (*Agent, bool) {
+	for _, agent := range agentPool.Range {
+		if agent.Name == name {
+			return agent, true
+		}
+	}
+	return nil, false
+}
+
+func Add(cfg *agent.AgentConfig) (added bool) {
+	_, loaded := agentPool.LoadOrCompute(cfg.Addr, func() (*Agent, bool) {
+		return newAgent(cfg), false
+	})
+	return !loaded
+}
+
+func Has(cfg *agent.AgentConfig) bool {
+	_, ok := agentPool.Load(cfg.Addr)
+	return ok
+}
+
+func Remove(cfg *agent.AgentConfig) {
+	agentPool.Delete(cfg.Addr)
+}
+
+func RemoveAll() {
+	agentPool.Clear()
+}
+
+func List() []*Agent {
+	agents := make([]*Agent, 0, agentPool.Size())
+	for _, agent := range agentPool.Range {
+		agents = append(agents, agent)
+	}
+	return agents
+}
+
+func Iter() iter.Seq2[string, *Agent] {
+	return agentPool.Range
+}
+
+func Num() int {
+	return agentPool.Size()
+}
+
+func getAgentByAddr(addr string) (agent *Agent, ok bool) {
+	agent, ok = agentPool.Load(addr)
+	return agent, ok
+}

internal/api/v1/README.md

@@ -0,0 +1,197 @@
+# API v1 Package
+
+Implements the v1 REST API handlers for GoDoxy, exposing endpoints for managing routes, Docker containers, certificates, metrics, and system configuration.
+
+## Overview
+
+The `internal/api/v1` package implements the HTTP handlers that power GoDoxy's REST API. It uses the Gin web framework and provides endpoints for route management, container operations, certificate handling, system metrics, and configuration.
+
+### Primary Consumers
+
+- **WebUI**: The homepage dashboard and admin interface consume these endpoints
+
+### Non-goals
+
+- Authentication and authorization logic (delegated to `internal/auth`)
+- Route proxying and request handling (handled by `internal/route`)
+- Docker container lifecycle management (delegated to `internal/docker`)
+- Certificate issuance and storage (handled by `internal/autocert`)
+
+### Stability
+
+This package is stable. Public API endpoints follow semantic versioning for request/response contracts. Internal implementation may change between minor versions.
+
+## Public API
+
+### Exported Types
+
+Types are defined in `goutils/apitypes`:
+
+| Type                       | Purpose                          |
+| -------------------------- | -------------------------------- |
+| `apitypes.ErrorResponse`   | Standard error response format   |
+| `apitypes.SuccessResponse` | Standard success response format |
+
+### Handler Subpackages
+
+| Package    | Purpose                                        |
+| ---------- | ---------------------------------------------- |
+| `route`    | Route listing, details, and playground testing |
+| `docker`   | Docker container management and monitoring     |
+| `cert`     | Certificate information and renewal            |
+| `metrics`  | System metrics and uptime information          |
+| `homepage` | Homepage items and category management         |
+| `file`     | Configuration file read/write operations       |
+| `auth`     | Authentication and session management          |
+| `agent`    | Remote agent creation and management           |
+
+## Architecture
+
+### Handler Organization
+
+Package structure mirrors the API endpoint paths (e.g., `auth/login.go` handles `/auth/login`).
+
+### Request Flow
+
+```mermaid
+sequenceDiagram
+    participant Client
+    participant GinRouter
+    participant Handler
+    participant Service
+    participant Response
+
+    Client->>GinRouter: HTTP Request
+    GinRouter->>Handler: Route to handler
+    Handler->>Service: Call service layer
+    Service-->>Handler: Data or error
+    Handler->>Response: Format JSON response
+    Response-->>Client: JSON or redirect
+```
+
+## Configuration Surface
+
+API listening address is configured with `GODOXY_API_ADDR` environment variable.
+
+## Dependency and Integration Map
+
+### Internal Dependencies
+
+| Package                 | Purpose                     |
+| ----------------------- | --------------------------- |
+| `internal/route/routes` | Route storage and iteration |
+| `internal/docker`       | Docker client management    |
+| `internal/config`       | Configuration access        |
+| `internal/metrics`      | System metrics collection   |
+| `internal/homepage`     | Homepage item generation    |
+| `internal/agentpool`    | Remote agent management     |
+| `internal/auth`         | Authentication services     |
+
+### External Dependencies
+
+| Package                        | Purpose                     |
+| ------------------------------ | --------------------------- |
+| `github.com/gin-gonic/gin`     | HTTP routing and middleware |
+| `github.com/gorilla/websocket` | WebSocket support           |
+| `github.com/moby/moby/client`  | Docker API client           |
+
+## Observability
+
+### Logs
+
+Handlers log at `INFO` level for requests and `ERROR` level for failures. Logs include:
+
+- Request path and method
+- Response status code
+- Error details (when applicable)
+
+### Metrics
+
+No dedicated metrics exposed by handlers. Request metrics collected by middleware.
+
+## Security Considerations
+
+- All endpoints (except `/api/v1/version`) require authentication
+- Input validation using Gin binding tags
+- Path traversal prevention in file operations
+- WebSocket connections use same auth middleware as HTTP
+
+## Failure Modes and Recovery
+
+| Failure                             | Behavior                                   |
+| ----------------------------------- | ------------------------------------------ |
+| Docker host unreachable             | Returns partial results with errors logged |
+| Certificate provider not configured | Returns 404                                |
+| Invalid request body                | Returns 400 with error details             |
+| Authentication failure              | Returns 302 redirect to login              |
+| Agent not found                     | Returns 404                                |
+
+## Usage Examples
+
+### Listing All Routes via WebSocket
+
+```go
+import (
+    "github.com/gorilla/websocket"
+)
+
+func watchRoutes(provider string) error {
+    url := "ws://localhost:8888/api/v1/route/list"
+    if provider != "" {
+        url += "?provider=" + provider
+    }
+
+    conn, _, err := websocket.DefaultDialer.Dial(url, nil)
+    if err != nil {
+        return err
+    }
+    defer conn.Close()
+
+    for {
+        _, message, err := conn.ReadMessage()
+        if err != nil {
+            return err
+        }
+        // message contains JSON array of routes
+        processRoutes(message)
+    }
+}
+```
+
+### Getting Container Status
+
+```go
+import (
+    "encoding/json"
+    "net/http"
+)
+
+type Container struct {
+    Server string `json:"server"`
+    Name   string `json:"name"`
+    ID     string `json:"id"`
+    Image  string `json:"image"`
+}
+
+func listContainers() ([]Container, error) {
+    resp, err := http.Get("http://localhost:8888/api/v1/docker/containers")
+    if err != nil {
+        return nil, err
+    }
+    defer resp.Body.Close()
+
+    var containers []Container
+    if err := json.NewDecoder(resp.Body).Decode(&containers); err != nil {
+        return nil, err
+    }
+    return containers, nil
+}
+```
+
+### Health Check
+
+```bash
+curl http://localhost:8888/health
+```
+
+)

internal/api/v1/agent/create.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/internal/agentpool"
 	apitypes "github.com/yusing/goutils/apitypes"
 )
 
@@ -50,7 +51,7 @@ func Create(c *gin.Context) {
 	}
 
 	hostport := net.JoinHostPort(request.Host, strconv.Itoa(request.Port))
-	if _, ok := agent.GetAgent(hostport); ok {
+	if _, ok := agentpool.Get(hostport); ok {
 		c.JSON(http.StatusConflict, apitypes.Error("agent already exists"))
 		return
 	}

internal/api/v1/agent/list.go

@@ -5,7 +5,7 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/internal/agentpool"
 	"github.com/yusing/goutils/http/httpheaders"
 	"github.com/yusing/goutils/http/websocket"
 
@@ -19,15 +19,15 @@ import (
 // @Tags			agent,websocket
 // @Accept			json
 // @Produce		json
-// @Success		200	{array}		Agent
+// @Success		200	{array}		agent.AgentConfig
 // @Failure		403	{object}	apitypes.ErrorResponse
 // @Router			/agent/list [get]
 func List(c *gin.Context) {
 	if httpheaders.IsWebsocket(c.Request.Header) {
 		websocket.PeriodicWrite(c, 10*time.Second, func() (any, error) {
-			return agent.ListAgents(), nil
+			return agentpool.List(), nil
 		})
 	} else {
-		c.JSON(http.StatusOK, agent.ListAgents())
+		c.JSON(http.StatusOK, agentpool.List())
 	}
 }

internal/api/v1/agent/verify.go

@@ -8,6 +8,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/yusing/godoxy/agent/pkg/agent"
 	"github.com/yusing/godoxy/agent/pkg/certs"
+	"github.com/yusing/godoxy/internal/agentpool"
 	config "github.com/yusing/godoxy/internal/config/types"
 	"github.com/yusing/godoxy/internal/route/provider"
 	apitypes "github.com/yusing/goutils/apitypes"
@@ -79,21 +80,28 @@ func Verify(c *gin.Context) {
 	c.JSON(http.StatusOK, apitypes.Success(fmt.Sprintf("Added %d routes", nRoutesAdded)))
 }
 
-func verifyNewAgent(host string, ca agent.PEMPair, client agent.PEMPair, containerRuntime agent.ContainerRuntime) (int, gperr.Error) {
-	cfgState := config.ActiveState.Load()
-	for _, a := range cfgState.Value().Providers.Agents {
-		if a.Addr == host {
-			return 0, gperr.New("agent already exists")
-		}
-	}
+var errAgentAlreadyExists = gperr.New("agent already exists")
 
+func verifyNewAgent(host string, ca agent.PEMPair, client agent.PEMPair, containerRuntime agent.ContainerRuntime) (int, gperr.Error) {
 	var agentCfg agent.AgentConfig
 	agentCfg.Addr = host
 	agentCfg.Runtime = containerRuntime
 
-	err := agentCfg.StartWithCerts(cfgState.Context(), ca.Cert, client.Cert, client.Key)
+	// check if agent host exists in the config
+	cfgState := config.ActiveState.Load()
+	for _, a := range cfgState.Value().Providers.Agents {
+		if a.Addr == host {
+			return 0, errAgentAlreadyExists
+		}
+	}
+	// check if agent host exists in the agent pool
+	if agentpool.Has(&agentCfg) {
+		return 0, errAgentAlreadyExists
+	}
+
+	err := agentCfg.InitWithCerts(cfgState.Context(), ca.Cert, client.Cert, client.Key)
 	if err != nil {
-		return 0, gperr.Wrap(err, "failed to start agent")
+		return 0, gperr.Wrap(err, "failed to initialize agent config")
 	}
 
 	provider := provider.NewAgentProvider(&agentCfg)
@@ -102,11 +110,14 @@ func verifyNewAgent(host string, ca agent.PEMPair, client agent.PEMPair, contain
 	}
 
 	// agent must be added before loading routes
-	agent.AddAgent(&agentCfg)
+	added := agentpool.Add(&agentCfg)
+	if !added {
+		return 0, errAgentAlreadyExists
+	}
 	err = provider.LoadRoutes()
 	if err != nil {
 		cfgState.DeleteProvider(provider.String())
-		agent.RemoveAgent(&agentCfg)
+		agentpool.Remove(&agentCfg)
 		return 0, gperr.Wrap(err, "failed to load routes")
 	}
 

internal/api/v1/cert/info.go

@@ -1,6 +1,7 @@
 package certapi
 
 import (
+	"errors"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
@@ -8,46 +9,33 @@ import (
 	apitypes "github.com/yusing/goutils/apitypes"
 )
 
-type CertInfo struct {
-	Subject        string   `json:"subject"`
-	Issuer         string   `json:"issuer"`
-	NotBefore      int64    `json:"not_before"`
-	NotAfter       int64    `json:"not_after"`
-	DNSNames       []string `json:"dns_names"`
-	EmailAddresses []string `json:"email_addresses"`
-} // @name CertInfo
-
 // @x-id				"info"
 // @BasePath		/api/v1
 // @Summary		Get cert info
 // @Description	Get cert info
 // @Tags			cert
 // @Produce		json
-// @Success		200	{object}	CertInfo
-// @Failure		403	{object}	apitypes.ErrorResponse
-// @Failure		404	{object}	apitypes.ErrorResponse
-// @Failure		500	{object}	apitypes.ErrorResponse
-// @Router			/cert/info [get]
+// @Success		200	{array}	  autocert.CertInfo
+// @Failure		403	{object}	apitypes.ErrorResponse "Unauthorized"
+// @Failure		404	{object}	apitypes.ErrorResponse "No certificates found or autocert is not enabled"
+// @Failure		500	{object}	apitypes.ErrorResponse "Internal server error"
+// @Router		/cert/info [get]
 func Info(c *gin.Context) {
-	autocert := autocert.ActiveProvider.Load()
-	if autocert == nil {
+	provider := autocert.ActiveProvider.Load()
+	if provider == nil {
 		c.JSON(http.StatusNotFound, apitypes.Error("autocert is not enabled"))
 		return
 	}
 
-	cert, err := autocert.GetCert(nil)
+	certInfos, err := provider.GetCertInfos()
 	if err != nil {
+		if errors.Is(err, autocert.ErrNoCertificates) {
+			c.JSON(http.StatusNotFound, apitypes.Error("no certificate found"))
+			return
+		}
 		c.Error(apitypes.InternalServerError(err, "failed to get cert info"))
 		return
 	}
 
-	certInfo := CertInfo{
-		Subject:        cert.Leaf.Subject.CommonName,
-		Issuer:         cert.Leaf.Issuer.CommonName,
-		NotBefore:      cert.Leaf.NotBefore.Unix(),
-		NotAfter:       cert.Leaf.NotAfter.Unix(),
-		DNSNames:       cert.Leaf.DNSNames,
-		EmailAddresses: cert.Leaf.EmailAddresses,
-	}
-	c.JSON(http.StatusOK, certInfo)
+	c.JSON(http.StatusOK, certInfos)
 }

internal/api/v1/cert/renew.go

@@ -9,7 +9,6 @@ import (
 	"github.com/yusing/godoxy/internal/autocert"
 	"github.com/yusing/godoxy/internal/logging/memlogger"
 	apitypes "github.com/yusing/goutils/apitypes"
-	gperr "github.com/yusing/goutils/errs"
 	"github.com/yusing/goutils/http/websocket"
 )
 
@@ -40,33 +39,33 @@ func Renew(c *gin.Context) {
 	logs, cancel := memlogger.Events()
 	defer cancel()
 
-	done := make(chan struct{})
-
 	go func() {
-		defer close(done)
+		// Stream logs until WebSocket connection closes (renewal runs in background)
+		for {
+			select {
+			case <-manager.Context().Done():
+				return
+			case l := <-logs:
+				if err != nil {
+					return
+				}
 
-		err = autocert.ObtainCert()
-		if err != nil {
-			gperr.LogError("failed to obtain cert", err)
-			_ = manager.WriteData(websocket.TextMessage, []byte(err.Error()), 10*time.Second)
-		} else {
-			log.Info().Msg("cert obtained successfully")
+				err = manager.WriteData(websocket.TextMessage, l, 10*time.Second)
+				if err != nil {
+					return
+				}
+			}
 		}
 	}()
 
-	for {
-		select {
-		case l := <-logs:
-			if err != nil {
-				return
-			}
-
-			err = manager.WriteData(websocket.TextMessage, l, 10*time.Second)
-			if err != nil {
-				return
-			}
-		case <-done:
-			return
-		}
+	// renewal happens in background
+	ok := autocert.ForceExpiryAll()
+	if !ok {
+		log.Error().Msg("cert renewal already in progress")
+		time.Sleep(1 * time.Second) // wait for the log above to be sent
+		return
 	}
+	log.Info().Msg("cert force renewal requested")
+
+	autocert.WaitRenewalDone(manager.Context())
 }

internal/api/v1/docker/container.go

@@ -29,13 +29,13 @@ func GetContainer(c *gin.Context) {
 		return
 	}
 
-	dockerHost, ok := docker.GetDockerHostByContainerID(id)
+	dockerCfg, ok := docker.GetDockerCfgByContainerID(id)
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error("container not found"))
 		return
 	}
 
-	dockerClient, err := docker.NewClient(dockerHost)
+	dockerClient, err := docker.NewClient(dockerCfg)
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to create docker client"))
 		return
@@ -55,7 +55,7 @@ func GetContainer(c *gin.Context) {
 	}
 
 	c.JSON(http.StatusOK, &Container{
-		Server: dockerHost,
+		Server: dockerCfg.URL,
 		Name:   cont.Container.Name,
 		ID:     cont.Container.ID,
 		Image:  cont.Container.Image,

internal/api/v1/docker/logs.go

@@ -57,13 +57,13 @@ func Logs(c *gin.Context) {
 	}
 
 	// TODO: implement levels
-	dockerHost, ok := docker.GetDockerHostByContainerID(id)
+	dockerCfg, ok := docker.GetDockerCfgByContainerID(id)
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error(fmt.Sprintf("container %s not found", id)))
 		return
 	}
 
-	dockerClient, err := docker.NewClient(dockerHost)
+	dockerClient, err := docker.NewClient(dockerCfg)
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to get docker client"))
 		return
@@ -105,7 +105,7 @@ func Logs(c *gin.Context) {
 			return
 		}
 		log.Err(err).
-			Str("server", dockerHost).
+			Str("server", dockerCfg.URL).
 			Str("container", id).
 			Msg("failed to de-multiplex logs")
 	}

internal/api/v1/docker/restart.go

@@ -34,13 +34,13 @@ func Restart(c *gin.Context) {
 		return
 	}
 
-	dockerHost, ok := docker.GetDockerHostByContainerID(req.ID)
+	dockerCfg, ok := docker.GetDockerCfgByContainerID(req.ID)
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error("container not found"))
 		return
 	}
 
-	client, err := docker.NewClient(dockerHost)
+	client, err := docker.NewClient(dockerCfg)
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to create docker client"))
 		return

internal/api/v1/docker/start.go

@@ -34,13 +34,13 @@ func Start(c *gin.Context) {
 		return
 	}
 
-	dockerHost, ok := docker.GetDockerHostByContainerID(req.ID)
+	dockerCfg, ok := docker.GetDockerCfgByContainerID(req.ID)
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error("container not found"))
 		return
 	}
 
-	client, err := docker.NewClient(dockerHost)
+	client, err := docker.NewClient(dockerCfg)
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to create docker client"))
 		return

internal/api/v1/docker/stop.go

@@ -34,13 +34,13 @@ func Stop(c *gin.Context) {
 		return
 	}
 
-	dockerHost, ok := docker.GetDockerHostByContainerID(req.ID)
+	dockerCfg, ok := docker.GetDockerCfgByContainerID(req.ID)
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error("container not found"))
 		return
 	}
 
-	client, err := docker.NewClient(dockerHost)
+	client, err := docker.NewClient(dockerCfg)
 	if err != nil {
 		c.Error(apitypes.InternalServerError(err, "failed to create docker client"))
 		return

internal/api/v1/docs/swagger.json

@@ -328,23 +328,26 @@
           "200": {
             "description": "OK",
             "schema": {
-              "$ref": "#/definitions/CertInfo"
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/CertInfo"
+              }
             }
           },
           "403": {
-            "description": "Forbidden",
+            "description": "Unauthorized",
             "schema": {
               "$ref": "#/definitions/ErrorResponse"
             }
           },
           "404": {
-            "description": "Not Found",
+            "description": "No certificates found or autocert is not enabled",
             "schema": {
               "$ref": "#/definitions/ErrorResponse"
             }
           },
           "500": {
-            "description": "Internal Server Error",
+            "description": "Internal server error",
             "schema": {
               "$ref": "#/definitions/ErrorResponse"
             }
@@ -2353,6 +2356,16 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "supports_tcp_stream": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "supports_udp_stream": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "version": {
           "type": "string",
           "x-nullable": false,
@@ -2436,7 +2449,7 @@
       "type": "object",
       "properties": {
         "agent": {
-          "$ref": "#/definitions/Agent",
+          "$ref": "#/definitions/agentpool.Agent",
           "x-nullable": false,
           "x-omitempty": false
         },
@@ -2458,8 +2471,8 @@
           "x-nullable": false,
           "x-omitempty": false
         },
-        "docker_host": {
-          "type": "string",
+        "docker_cfg": {
+          "$ref": "#/definitions/DockerProviderConfig",
           "x-nullable": false,
           "x-omitempty": false
         },
@@ -2715,7 +2728,7 @@
       "required": [
         "container_id",
         "container_name",
-        "docker_host"
+        "docker_cfg"
       ],
       "properties": {
         "container_id": {
@@ -2728,7 +2741,24 @@
           "x-nullable": false,
           "x-omitempty": false
         },
-        "docker_host": {
+        "docker_cfg": {
+          "$ref": "#/definitions/DockerProviderConfig",
+          "x-nullable": false,
+          "x-omitempty": false
+        }
+      },
+      "x-nullable": false,
+      "x-omitempty": false
+    },
+    "DockerProviderConfig": {
+      "type": "object",
+      "properties": {
+        "tls": {
+          "$ref": "#/definitions/DockerTLSConfig",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "url": {
           "type": "string",
           "x-nullable": false,
           "x-omitempty": false
@@ -2737,6 +2767,27 @@
       "x-nullable": false,
       "x-omitempty": false
     },
+    "DockerTLSConfig": {
+      "type": "object",
+      "required": [
+        "ca_file"
+      ],
+      "properties": {
+        "ca_file": {
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "cert_file": {
+          "type": "string"
+        },
+        "key_file": {
+          "type": "string"
+        }
+      },
+      "x-nullable": false,
+      "x-omitempty": false
+    },
     "ErrorResponse": {
       "type": "object",
       "properties": {
@@ -2881,7 +2932,7 @@
           "x-omitempty": false
         },
         "retries": {
-          "description": "<0: immediate, >=0: threshold",
+          "description": "<0: immediate, 0: default, >0: threshold",
           "type": "integer",
           "x-nullable": false,
           "x-omitempty": false
@@ -2918,43 +2969,6 @@
       "x-nullable": false,
       "x-omitempty": false
     },
-    "HealthInfo": {
-      "type": "object",
-      "properties": {
-        "detail": {
-          "type": "string",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
-        "latency": {
-          "description": "latency in microseconds",
-          "type": "number",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
-        "status": {
-          "type": "string",
-          "enum": [
-            "healthy",
-            "unhealthy",
-            "napping",
-            "starting",
-            "error",
-            "unknown"
-          ],
-          "x-nullable": false,
-          "x-omitempty": false
-        },
-        "uptime": {
-          "description": "uptime in milliseconds",
-          "type": "number",
-          "x-nullable": false,
-          "x-omitempty": false
-        }
-      },
-      "x-nullable": false,
-      "x-omitempty": false
-    },
     "HealthInfoWithoutDetail": {
       "type": "object",
       "properties": {
@@ -3009,22 +3023,14 @@
           "x-nullable": true
         },
         "lastSeen": {
+          "description": "unix timestamp in seconds",
           "type": "integer",
           "x-nullable": false,
           "x-omitempty": false
         },
-        "lastSeenStr": {
-          "type": "string",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
         "latency": {
-          "type": "number",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
-        "latencyStr": {
-          "type": "string",
+          "description": "latency in milliseconds",
+          "type": "integer",
           "x-nullable": false,
           "x-omitempty": false
         },
@@ -3034,30 +3040,22 @@
           "x-omitempty": false
         },
         "started": {
+          "description": "unix timestamp in seconds",
           "type": "integer",
           "x-nullable": false,
           "x-omitempty": false
         },
-        "startedStr": {
-          "type": "string",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
         "status": {
-          "type": "string",
+          "$ref": "#/definitions/HealthStatusString",
           "x-nullable": false,
           "x-omitempty": false
         },
         "uptime": {
+          "description": "uptime in seconds",
           "type": "number",
           "x-nullable": false,
           "x-omitempty": false
         },
-        "uptimeStr": {
-          "type": "string",
-          "x-nullable": false,
-          "x-omitempty": false
-        },
         "url": {
           "type": "string",
           "x-nullable": false,
@@ -3070,11 +3068,32 @@
     "HealthMap": {
       "type": "object",
       "additionalProperties": {
-        "$ref": "#/definitions/HealthInfo"
+        "$ref": "#/definitions/HealthStatusString"
       },
       "x-nullable": false,
       "x-omitempty": false
     },
+    "HealthStatusString": {
+      "type": "string",
+      "enum": [
+        "unknown",
+        "healthy",
+        "napping",
+        "starting",
+        "unhealthy",
+        "error"
+      ],
+      "x-enum-varnames": [
+        "StatusUnknownStr",
+        "StatusHealthyStr",
+        "StatusNappingStr",
+        "StatusStartingStr",
+        "StatusUnhealthyStr",
+        "StatusErrorStr"
+      ],
+      "x-nullable": false,
+      "x-omitempty": false
+    },
     "HomepageCategory": {
       "type": "object",
       "properties": {
@@ -3430,6 +3449,11 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "no_loading_page": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "proxmox": {
           "$ref": "#/definitions/ProxmoxConfig",
           "x-nullable": false,
@@ -4175,6 +4199,11 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "bind": {
+          "description": "for TCP and UDP routes, bind address to listen on",
+          "type": "string",
+          "x-nullable": true
+        },
         "container": {
           "description": "Docker only",
           "allOf": [
@@ -4234,6 +4263,12 @@
           ],
           "x-nullable": true
         },
+        "index": {
+          "description": "Index file to serve for single-page app mode",
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "load_balance": {
           "allOf": [
             {
@@ -4308,6 +4343,7 @@
           "enum": [
             "http",
             "https",
+            "h2c",
             "tcp",
             "udp",
             "fileserver"
@@ -4315,6 +4351,12 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "spa": {
+          "description": "Single-page app mode: serves index for non-existent paths",
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "ssl_certificate": {
           "description": "Path to client certificate",
           "type": "string",
@@ -4500,6 +4542,11 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "is_excluded": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "statuses": {
           "type": "array",
           "items": {
@@ -4872,6 +4919,43 @@
       "x-nullable": false,
       "x-omitempty": false
     },
+    "agentpool.Agent": {
+      "type": "object",
+      "properties": {
+        "addr": {
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "name": {
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "runtime": {
+          "$ref": "#/definitions/agent.ContainerRuntime",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "supports_tcp_stream": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "supports_udp_stream": {
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
+        "version": {
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        }
+      },
+      "x-nullable": false,
+      "x-omitempty": false
+    },
     "auth.UserPassAuthCallbackRequest": {
       "type": "object",
       "properties": {
@@ -5295,6 +5379,11 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "bind": {
+          "description": "for TCP and UDP routes, bind address to listen on",
+          "type": "string",
+          "x-nullable": true
+        },
         "container": {
           "description": "Docker only",
           "allOf": [
@@ -5354,6 +5443,12 @@
           ],
           "x-nullable": true
         },
+        "index": {
+          "description": "Index file to serve for single-page app mode",
+          "type": "string",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "load_balance": {
           "allOf": [
             {
@@ -5428,6 +5523,7 @@
           "enum": [
             "http",
             "https",
+            "h2c",
             "tcp",
             "udp",
             "fileserver"
@@ -5435,6 +5531,12 @@
           "x-nullable": false,
           "x-omitempty": false
         },
+        "spa": {
+          "description": "Single-page app mode: serves index for non-existent paths",
+          "type": "boolean",
+          "x-nullable": false,
+          "x-omitempty": false
+        },
         "ssl_certificate": {
           "description": "Path to client certificate",
           "type": "string",

internal/api/v1/docs/swagger.yaml

@@ -8,6 +8,10 @@ definitions:
         type: string
       runtime:
         $ref: '#/definitions/agent.ContainerRuntime'
+      supports_tcp_stream:
+        type: boolean
+      supports_udp_stream:
+        type: boolean
       version:
         type: string
     type: object
@@ -48,7 +52,7 @@ definitions:
   Container:
     properties:
       agent:
-        $ref: '#/definitions/Agent'
+        $ref: '#/definitions/agentpool.Agent'
       aliases:
         items:
           type: string
@@ -57,8 +61,8 @@ definitions:
         type: string
       container_name:
         type: string
-      docker_host:
-        type: string
+      docker_cfg:
+        $ref: '#/definitions/DockerProviderConfig'
       errors:
         type: string
       idlewatcher_config:
@@ -192,12 +196,30 @@ definitions:
         type: string
       container_name:
         type: string
-      docker_host:
-        type: string
+      docker_cfg:
+        $ref: '#/definitions/DockerProviderConfig'
     required:
     - container_id
     - container_name
-    - docker_host
+    - docker_cfg
+    type: object
+  DockerProviderConfig:
+    properties:
+      tls:
+        $ref: '#/definitions/DockerTLSConfig'
+      url:
+        type: string
+    type: object
+  DockerTLSConfig:
+    properties:
+      ca_file:
+        type: string
+      cert_file:
+        type: string
+      key_file:
+        type: string
+    required:
+    - ca_file
     type: object
   ErrorResponse:
     properties:
@@ -269,7 +291,7 @@ definitions:
       path:
         type: string
       retries:
-        description: '<0: immediate, >=0: threshold'
+        description: '<0: immediate, 0: default, >0: threshold'
         type: integer
       timeout:
         type: integer
@@ -284,26 +306,6 @@ definitions:
         additionalProperties: {}
         type: object
     type: object
-  HealthInfo:
-    properties:
-      detail:
-        type: string
-      latency:
-        description: latency in microseconds
-        type: number
-      status:
-        enum:
-        - healthy
-        - unhealthy
-        - napping
-        - starting
-        - error
-        - unknown
-        type: string
-      uptime:
-        description: uptime in milliseconds
-        type: number
-    type: object
   HealthInfoWithoutDetail:
     properties:
       latency:
@@ -333,32 +335,44 @@ definitions:
         - $ref: '#/definitions/HealthExtra'
         x-nullable: true
       lastSeen:
+        description: unix timestamp in seconds
         type: integer
-      lastSeenStr:
-        type: string
       latency:
-        type: number
-      latencyStr:
-        type: string
+        description: latency in milliseconds
+        type: integer
       name:
         type: string
       started:
+        description: unix timestamp in seconds
         type: integer
-      startedStr:
-        type: string
       status:
-        type: string
+        $ref: '#/definitions/HealthStatusString'
       uptime:
+        description: uptime in seconds
         type: number
-      uptimeStr:
-        type: string
       url:
         type: string
     type: object
   HealthMap:
     additionalProperties:
-      $ref: '#/definitions/HealthInfo'
+      $ref: '#/definitions/HealthStatusString'
     type: object
+  HealthStatusString:
+    enum:
+    - unknown
+    - healthy
+    - napping
+    - starting
+    - unhealthy
+    - error
+    type: string
+    x-enum-varnames:
+    - StatusUnknownStr
+    - StatusHealthyStr
+    - StatusNappingStr
+    - StatusStartingStr
+    - StatusUnhealthyStr
+    - StatusErrorStr
   HomepageCategory:
     properties:
       items:
@@ -517,6 +531,8 @@ definitions:
         description: "0: no idle watcher.\nPositive: idle watcher with idle timeout.\nNegative:
           idle watcher as a dependency.\tIdleTimeout time.Duration `json:\"idle_timeout\"
           json_ext:\"duration\"`"
+      no_loading_page:
+        type: boolean
       proxmox:
         $ref: '#/definitions/ProxmoxConfig'
       start_endpoint:
@@ -867,6 +883,10 @@ definitions:
         type: string
       alias:
         type: string
+      bind:
+        description: for TCP and UDP routes, bind address to listen on
+        type: string
+        x-nullable: true
       container:
         allOf:
         - $ref: '#/definitions/Container'
@@ -897,6 +917,9 @@ definitions:
         allOf:
         - $ref: '#/definitions/IdlewatcherConfig'
         x-nullable: true
+      index:
+        description: Index file to serve for single-page app mode
+        type: string
       load_balance:
         allOf:
         - $ref: '#/definitions/LoadBalancerConfig'
@@ -940,10 +963,14 @@ definitions:
         enum:
         - http
         - https
+        - h2c
         - tcp
         - udp
         - fileserver
         type: string
+      spa:
+        description: 'Single-page app mode: serves index for non-existent paths'
+        type: boolean
       ssl_certificate:
         description: Path to client certificate
         type: string
@@ -1030,6 +1057,8 @@ definitions:
         type: number
       is_docker:
         type: boolean
+      is_excluded:
+        type: boolean
       statuses:
         items:
           $ref: '#/definitions/RouteStatus'
@@ -1211,6 +1240,21 @@ definitions:
     x-enum-varnames:
     - ContainerRuntimeDocker
     - ContainerRuntimePodman
+  agentpool.Agent:
+    properties:
+      addr:
+        type: string
+      name:
+        type: string
+      runtime:
+        $ref: '#/definitions/agent.ContainerRuntime'
+      supports_tcp_stream:
+        type: boolean
+      supports_udp_stream:
+        type: boolean
+      version:
+        type: string
+    type: object
   auth.UserPassAuthCallbackRequest:
     properties:
       password:
@@ -1474,6 +1518,10 @@ definitions:
         type: string
       alias:
         type: string
+      bind:
+        description: for TCP and UDP routes, bind address to listen on
+        type: string
+        x-nullable: true
       container:
         allOf:
         - $ref: '#/definitions/Container'
@@ -1504,6 +1552,9 @@ definitions:
         allOf:
         - $ref: '#/definitions/IdlewatcherConfig'
         x-nullable: true
+      index:
+        description: Index file to serve for single-page app mode
+        type: string
       load_balance:
         allOf:
         - $ref: '#/definitions/LoadBalancerConfig'
@@ -1547,10 +1598,14 @@ definitions:
         enum:
         - http
         - https
+        - h2c
         - tcp
         - udp
         - fileserver
         type: string
+      spa:
+        description: 'Single-page app mode: serves index for non-existent paths'
+        type: boolean
       ssl_certificate:
         description: Path to client certificate
         type: string
@@ -1858,17 +1913,19 @@ paths:
         "200":
           description: OK
           schema:
-            $ref: '#/definitions/CertInfo'
+            items:
+              $ref: '#/definitions/CertInfo'
+            type: array
         "403":
-          description: Forbidden
+          description: Unauthorized
           schema:
             $ref: '#/definitions/ErrorResponse'
         "404":
-          description: Not Found
+          description: No certificates found or autocert is not enabled
           schema:
             $ref: '#/definitions/ErrorResponse'
         "500":
-          description: Internal Server Error
+          description: Internal server error
           schema:
             $ref: '#/definitions/ErrorResponse'
       summary: Get cert info

internal/api/v1/favicon.go

@@ -13,8 +13,9 @@ import (
 )
 
 type GetFavIconRequest struct {
-	URL   string `form:"url" binding:"required_without=Alias"`
-	Alias string `form:"alias" binding:"required_without=URL"`
+	URL     string               `form:"url" binding:"required_without=Alias"`
+	Alias   string               `form:"alias" binding:"required_without=URL"`
+	Variant homepage.IconVariant `form:"variant" binding:"omitempty,oneof=light dark"`
 } //	@name	GetFavIconRequest
 
 // @x-id				"favicon"
@@ -46,7 +47,11 @@ func FavIcon(c *gin.Context) {
 			c.JSON(http.StatusBadRequest, apitypes.Error("invalid url", err))
 			return
 		}
-		fetchResult, err := homepage.FetchFavIconFromURL(c.Request.Context(), &iconURL)
+		icon := &iconURL
+		if request.Variant != homepage.IconVariantNone {
+			icon = icon.WithVariant(request.Variant)
+		}
+		fetchResult, err := homepage.FetchFavIconFromURL(c.Request.Context(), icon)
 		if err != nil {
 			homepage.GinFetchError(c, fetchResult.StatusCode, err)
 			return
@@ -56,7 +61,7 @@ func FavIcon(c *gin.Context) {
 	}
 
 	// try with alias
-	result, err := GetFavIconFromAlias(c.Request.Context(), request.Alias)
+	result, err := GetFavIconFromAlias(c.Request.Context(), request.Alias, request.Variant)
 	if err != nil {
 		homepage.GinFetchError(c, result.StatusCode, err)
 		return
@@ -65,7 +70,7 @@ func FavIcon(c *gin.Context) {
 }
 
 //go:linkname GetFavIconFromAlias v1.GetFavIconFromAlias
-func GetFavIconFromAlias(ctx context.Context, alias string) (homepage.FetchResult, error) {
+func GetFavIconFromAlias(ctx context.Context, alias string, variant homepage.IconVariant) (homepage.FetchResult, error) {
 	// try with route.Icon
 	r, ok := routes.HTTP.Get(alias)
 	if !ok {
@@ -79,13 +84,19 @@ func GetFavIconFromAlias(ctx context.Context, alias string) (homepage.FetchResul
 	hp := r.HomepageItem()
 	if hp.Icon != nil {
 		if hp.Icon.IconSource == homepage.IconSourceRelative {
-			result, err = homepage.FindIcon(ctx, r, *hp.Icon.FullURL)
+			result, err = homepage.FindIcon(ctx, r, *hp.Icon.FullURL, variant)
+		} else if variant != homepage.IconVariantNone {
+			result, err = homepage.FetchFavIconFromURL(ctx, hp.Icon.WithVariant(variant))
+			if err != nil {
+				// fallback to no variant
+				result, err = homepage.FetchFavIconFromURL(ctx, hp.Icon.WithVariant(homepage.IconVariantNone))
+			}
 		} else {
 			result, err = homepage.FetchFavIconFromURL(ctx, hp.Icon)
 		}
 	} else {
 		// try extract from "link[rel=icon]"
-		result, err = homepage.FindIcon(ctx, r, "/")
+		result, err = homepage.FindIcon(ctx, r, "/", variant)
 	}
 	if result.StatusCode == 0 {
 		result.StatusCode = http.StatusOK

internal/api/v1/health.go

@@ -12,8 +12,6 @@ import (
 	_ "github.com/yusing/goutils/apitypes"
 )
 
-type HealthMap = map[string]routes.HealthInfo //	@name	HealthMap
-
 // @x-id				"health"
 // @BasePath		/api/v1
 // @Summary		Get routes health info
@@ -21,16 +19,16 @@ type HealthMap = map[string]routes.HealthInfo //	@name	HealthMap
 // @Tags			v1,websocket
 // @Accept			json
 // @Produce		json
-// @Success		200	{object}	HealthMap "Health info by route name"
+// @Success		200	{object}	routes.HealthMap "Health info by route name"
 // @Failure		403	{object}	apitypes.ErrorResponse
 // @Failure		500	{object}	apitypes.ErrorResponse
 // @Router			/health [get]
 func Health(c *gin.Context) {
 	if httpheaders.IsWebsocket(c.Request.Header) {
 		websocket.PeriodicWrite(c, 1*time.Second, func() (any, error) {
-			return routes.GetHealthInfo(), nil
+			return routes.GetHealthInfoSimple(), nil
 		})
 	} else {
-		c.JSON(http.StatusOK, routes.GetHealthInfo())
+		c.JSON(http.StatusOK, routes.GetHealthInfoSimple())
 	}
 }

internal/api/v1/metrics/all_system_info.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"net/http"
-	"sync"
 	"sync/atomic"
 	"time"
 
@@ -12,6 +11,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/rs/zerolog/log"
 	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/internal/agentpool"
 	"github.com/yusing/godoxy/internal/metrics/period"
 	"github.com/yusing/godoxy/internal/metrics/systeminfo"
 	apitypes "github.com/yusing/goutils/apitypes"
@@ -80,7 +80,7 @@ func AllSystemInfo(c *gin.Context) {
 	}
 
 	// leave 5 extra slots for buffering in case new agents are added.
-	dataCh := make(chan SystemInfoData, 1+agent.NumAgents()+5)
+	dataCh := make(chan SystemInfoData, 1+agentpool.Num()+5)
 	defer close(dataCh)
 
 	ticker := time.NewTicker(req.Interval)
@@ -103,54 +103,52 @@ func AllSystemInfo(c *gin.Context) {
 
 	// processing function for one round.
 	doRound := func() (bool, error) {
-		var roundWg sync.WaitGroup
 		var numErrs atomic.Int32
 
 		totalAgents := int32(1) // myself
 
-		errs := gperr.NewBuilderWithConcurrency()
+		var errs gperr.Group
 		// get system info for me and all agents in parallel.
-		roundWg.Go(func() {
+		errs.Go(func() error {
 			data, err := systeminfo.Poller.GetRespData(req.Period, query)
 			if err != nil {
-				errs.Add(gperr.Wrap(err, "Main server"))
 				numErrs.Add(1)
-				return
+				return gperr.PrependSubject("Main server", err)
 			}
 			select {
 			case <-manager.Done():
-				return
+				return nil
 			case dataCh <- SystemInfoData{
 				AgentName:  "GoDoxy",
 				SystemInfo: data,
 			}:
 			}
+			return nil
 		})
 
-		for _, a := range agent.IterAgents() {
+		for _, a := range agentpool.Iter() {
 			totalAgents++
-			agentShallowCopy := *a
 
-			roundWg.Go(func() {
-				data, err := getAgentSystemInfoWithRetry(manager.Context(), &agentShallowCopy, queryEncoded)
+			errs.Go(func() error {
+				data, err := getAgentSystemInfoWithRetry(manager.Context(), a, queryEncoded)
 				if err != nil {
-					errs.Add(gperr.Wrap(err, "Agent "+agentShallowCopy.Name))
 					numErrs.Add(1)
-					return
+					return gperr.PrependSubject("Agent "+a.Name, err)
 				}
 				select {
 				case <-manager.Done():
-					return
+					return nil
 				case dataCh <- SystemInfoData{
-					AgentName:  agentShallowCopy.Name,
+					AgentName:  a.Name,
 					SystemInfo: data,
 				}:
 				}
+				return nil
 			})
 		}
 
-		roundWg.Wait()
-		return numErrs.Load() == totalAgents, errs.Error()
+		err := errs.Wait().Error()
+		return numErrs.Load() == totalAgents, err
 	}
 
 	// write system info immediately once.
@@ -178,7 +176,7 @@ func AllSystemInfo(c *gin.Context) {
 	}
 }
 
-func getAgentSystemInfo(ctx context.Context, a *agent.AgentConfig, query string) (bytesFromPool, error) {
+func getAgentSystemInfo(ctx context.Context, a *agentpool.Agent, query string) (bytesFromPool, error) {
 	ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
 	defer cancel()
 
@@ -197,7 +195,7 @@ func getAgentSystemInfo(ctx context.Context, a *agent.AgentConfig, query string)
 	return bytesFromPool{json.RawMessage(bytesBuf), release}, nil
 }
 
-func getAgentSystemInfoWithRetry(ctx context.Context, a *agent.AgentConfig, query string) (bytesFromPool, error) {
+func getAgentSystemInfoWithRetry(ctx context.Context, a *agentpool.Agent, query string) (bytesFromPool, error) {
 	const maxRetries = 3
 	var lastErr error
 

internal/api/v1/metrics/system_info.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	agentPkg "github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/internal/agentpool"
 	"github.com/yusing/godoxy/internal/metrics/period"
 	"github.com/yusing/godoxy/internal/metrics/systeminfo"
 	apitypes "github.com/yusing/goutils/apitypes"
@@ -49,9 +50,9 @@ func SystemInfo(c *gin.Context) {
 	}
 	c.Request.URL.RawQuery = query.Encode()
 
-	agent, ok := agentPkg.GetAgent(agentAddr)
+	agent, ok := agentpool.Get(agentAddr)
 	if !ok {
-		agent, ok = agentPkg.GetAgentByName(agentName)
+		agent, ok = agentpool.GetAgent(agentName)
 	}
 	if !ok {
 		c.JSON(http.StatusNotFound, apitypes.Error("agent_addr or agent_name not found"))

internal/api/v1/route/playground.go

@@ -12,6 +12,7 @@ import (
 	"github.com/yusing/godoxy/internal/route/rules"
 	apitypes "github.com/yusing/goutils/apitypes"
 	gperr "github.com/yusing/goutils/errs"
+	httputils "github.com/yusing/goutils/http"
 )
 
 type RawRule struct {
@@ -348,7 +349,7 @@ func checkMatchedRules(rulesList rules.Rules, w http.ResponseWriter, r *http.Req
 	var matched []string
 
 	// Create a ResponseModifier to properly check rules
-	rm := rules.NewResponseModifier(w)
+	rm := httputils.NewResponseModifier(w)
 
 	for _, rule := range rulesList {
 		// Check if rule matches

internal/api/v1/route/routes.go

@@ -34,12 +34,12 @@ func Routes(c *gin.Context) {
 
 	provider := c.Query("provider")
 	if provider == "" {
-		c.JSON(http.StatusOK, slices.Collect(routes.Iter))
+		c.JSON(http.StatusOK, slices.Collect(routes.IterAll))
 		return
 	}
 
-	rts := make([]types.Route, 0, routes.NumRoutes())
-	for r := range routes.Iter {
+	rts := make([]types.Route, 0, routes.NumAllRoutes())
+	for r := range routes.IterAll {
 		if r.ProviderName() == provider {
 			rts = append(rts, r)
 		}
@@ -51,14 +51,14 @@ func RoutesWS(c *gin.Context) {
 	provider := c.Query("provider")
 	if provider == "" {
 		websocket.PeriodicWrite(c, 3*time.Second, func() (any, error) {
-			return slices.Collect(routes.Iter), nil
+			return slices.Collect(routes.IterAll), nil
 		})
 		return
 	}
 
 	websocket.PeriodicWrite(c, 3*time.Second, func() (any, error) {
-		rts := make([]types.Route, 0, routes.NumRoutes())
-		for r := range routes.Iter {
+		rts := make([]types.Route, 0, routes.NumAllRoutes())
+		for r := range routes.IterAll {
 			if r.ProviderName() == provider {
 				rts = append(rts, r)
 			}

internal/auth/README.md

@@ -0,0 +1,349 @@
+# Authentication
+
+Authentication providers supporting OIDC and username/password authentication with JWT-based sessions.
+
+## Overview
+
+The auth package implements authentication middleware and login handlers that integrate with GoDoxy's HTTP routing system. It provides flexible authentication that can be enabled/disabled based on configuration and supports multiple authentication providers.
+
+### Primary consumers
+
+- `internal/route/rules` - Authentication middleware for routes
+- `internal/api/v1/auth` - Login and session management endpoints
+- `internal/homepage` - WebUI login page
+
+### Non-goals
+
+- ACL or authorization (see `internal/acl`)
+- User management database
+- Multi-factor authentication
+- Rate limiting (basic OIDC rate limiting only)
+
+### Stability
+
+Stable internal package. Public API consists of the `Provider` interface and initialization functions.
+
+## Public API
+
+### Exported types
+
+```go
+type Provider interface {
+    CheckToken(r *http.Request) error
+    LoginHandler(w http.ResponseWriter, r *http.Request)
+    PostAuthCallbackHandler(w http.ResponseWriter, r *http.Request)
+    LogoutHandler(w http.ResponseWriter, r *http.Request)
+}
+```
+
+### OIDC Provider
+
+```go
+type OIDCProvider struct {
+    oauthConfig   *oauth2.Config
+    oidcProvider  *oidc.Provider
+    oidcVerifier  *oidc.IDTokenVerifier
+    endSessionURL *url.URL
+    allowedUsers  []string
+    allowedGroups []string
+    rateLimit     *rate.Limiter
+}
+```
+
+### Username/Password Provider
+
+```go
+type UserPassAuth struct {
+    username string
+    pwdHash  []byte
+    secret   []byte
+    tokenTTL time.Duration
+}
+```
+
+### Exported functions
+
+```go
+func Initialize() error
+```
+
+Sets up authentication providers based on environment configuration. Returns error if OIDC issuer is configured but cannot be reached.
+
+```go
+func IsEnabled() bool
+```
+
+Returns whether authentication is enabled. Checks `DEBUG_DISABLE_AUTH`, `API_JWT_SECRET`, and `OIDC_ISSUER_URL`.
+
+```go
+func IsOIDCEnabled() bool
+```
+
+Returns whether OIDC authentication is configured.
+
+```go
+func GetDefaultAuth() Provider
+```
+
+Returns the configured authentication provider.
+
+```go
+func AuthCheckHandler(w http.ResponseWriter, r *http.Request)
+```
+
+HTTP handler that checks if the request has a valid token. Returns 200 if valid, invokes login handler otherwise.
+
+```go
+func AuthOrProceed(w http.ResponseWriter, r *http.Request) bool
+```
+
+Authenticates request or proceeds if valid. Returns `false` if login handler was invoked, `true` if authenticated.
+
+```go
+func ProceedNext(w http.ResponseWriter, r *http.Request)
+```
+
+Continues to the next handler after successful authentication.
+
+```go
+func NewUserPassAuth(username, password string, secret []byte, tokenTTL time.Duration) (*UserPassAuth, error)
+```
+
+Creates a new username/password auth provider with bcrypt password hashing.
+
+```go
+func NewUserPassAuthFromEnv() (*UserPassAuth, error)
+```
+
+Creates username/password auth from environment variables `API_USER`, `API_PASSWORD`, `API_JWT_SECRET`.
+
+```go
+func NewOIDCProvider(issuerURL, clientID, clientSecret string, allowedUsers, allowedGroups []string) (*OIDCProvider, error)
+```
+
+Creates a new OIDC provider. Returns error if issuer cannot be reached or no allowed users/groups are configured.
+
+```go
+func NewOIDCProviderFromEnv() (*OIDCProvider, error)
+```
+
+Creates OIDC provider from environment variables `OIDC_ISSUER_URL`, `OIDC_CLIENT_ID`, `OIDC_CLIENT_SECRET`, etc.
+
+## Architecture
+
+### Core components
+
+```mermaid
+graph TD
+    A[HTTP Request] --> B{Auth Enabled?}
+    B -->|No| C[Proceed Direct]
+    B -->|Yes| D[Check Token]
+    D -->|Valid| E[Proceed]
+    D -->|Invalid| F[Login Handler]
+
+    G[OIDC Provider] --> H[Token Validation]
+    I[UserPass Provider] --> J[Credential Check]
+
+    F --> K{OIDC Configured?}
+    K -->|Yes| G
+    K -->|No| I
+
+    subgraph Cookie Management
+        L[Token Cookie]
+        M[State Cookie]
+        N[Session Cookie]
+    end
+```
+
+### OIDC authentication flow
+
+```mermaid
+sequenceDiagram
+    participant User
+    participant App
+    participant IdP
+
+    User->>App: Access Protected Resource
+    App->>App: Check Token
+    alt No valid token
+        App-->>User: Redirect to /auth/
+        User->>IdP: Login & Authorize
+        IdP-->>User: Redirect with Code
+        User->>App: /auth/callback?code=...
+        App->>IdP: Exchange Code for Token
+        IdP-->>App: Access Token + ID Token
+        App->>App: Validate Token
+        App->>App: Check allowed users/groups
+        App-->>User: Protected Resource
+    else Valid token exists
+        App-->>User: Protected Resource
+    end
+```
+
+### Username/password flow
+
+```mermaid
+sequenceDiagram
+    participant User
+    participant App
+
+    User->>App: POST /auth/callback
+    App->>App: Validate credentials
+    alt Valid
+        App->>App: Generate JWT
+        App-->>User: Set token cookie, redirect to /
+    else Invalid
+        App-->>User: 401 Unauthorized
+    end
+```
+
+## Configuration Surface
+
+### Environment variables
+
+| Variable                 | Description                                                 |
+| ------------------------ | ----------------------------------------------------------- |
+| `DEBUG_DISABLE_AUTH`     | Set to "true" to disable auth for debugging                 |
+| `API_JWT_SECRET`         | Secret key for JWT token validation (enables userpass auth) |
+| `API_USER`               | Username for userpass authentication                        |
+| `API_PASSWORD`           | Password for userpass authentication                        |
+| `API_JWT_TOKEN_TTL`      | Token TTL duration (default: 24h)                           |
+| `OIDC_ISSUER_URL`        | OIDC provider URL (enables OIDC)                            |
+| `OIDC_CLIENT_ID`         | OIDC client ID                                              |
+| `OIDC_CLIENT_SECRET`     | OIDC client secret                                          |
+| `OIDC_REDIRECT_URL`      | OIDC redirect URL                                           |
+| `OIDC_ALLOWED_USERS`     | Comma-separated list of allowed users                       |
+| `OIDC_ALLOWED_GROUPS`    | Comma-separated list of allowed groups                      |
+| `OIDC_SCOPES`            | Comma-separated OIDC scopes (default: openid,profile,email) |
+| `OIDC_RATE_LIMIT`        | Rate limit requests (default: 10)                           |
+| `OIDC_RATE_LIMIT_PERIOD` | Rate limit period (default: 1m)                             |
+
+### Hot-reloading
+
+Authentication configuration requires restart. No dynamic reconfiguration is supported.
+
+## Dependency and Integration Map
+
+### Internal dependencies
+
+- `internal/common` - Environment variable access
+
+### External dependencies
+
+- `golang.org/x/crypto/bcrypt` - Password hashing
+- `github.com/coreos/go-oidc/v3/oidc` - OIDC protocol
+- `golang.org/x/oauth2` - OAuth2/OIDC implementation
+- `github.com/golang-jwt/jwt/v5` - JWT token handling
+- `golang.org/x/time/rate` - OIDC rate limiting
+
+### Integration points
+
+```go
+// Route middleware uses AuthOrProceed
+routeHandler := func(w http.ResponseWriter, r *http.Request) {
+    if !auth.AuthOrProceed(w, r) {
+        return // Auth failed, login handler was invoked
+    }
+    // Continue with authenticated request
+}
+```
+
+## Observability
+
+### Logs
+
+- OIDC provider initialization errors
+- Token validation failures
+- Rate limit exceeded events
+
+### Metrics
+
+No metrics are currently exposed.
+
+## Security Considerations
+
+- JWT tokens use HS512 signing for userpass auth
+- OIDC tokens are validated against the issuer
+- Session tokens are scoped by client ID to prevent conflicts
+- Passwords are hashed with bcrypt (cost 10)
+- OIDC rate limiting prevents brute-force attacks
+- State parameter prevents CSRF attacks
+- Refresh tokens are stored and invalidated on logout
+
+## Failure Modes and Recovery
+
+| Failure                  | Behavior                       | Recovery                      |
+| ------------------------ | ------------------------------ | ----------------------------- |
+| OIDC issuer unreachable  | Initialize returns error       | Fix network/URL configuration |
+| Invalid JWT secret       | Initialize uses API_JWT_SECRET | Provide correct secret        |
+| Token expired            | CheckToken returns error       | User must re-authenticate     |
+| User not in allowed list | Returns ErrUserNotAllowed      | Add user to allowed list      |
+| Rate limit exceeded      | Returns 429 Too Many Requests  | Wait for rate limit reset     |
+
+## Usage Examples
+
+### Basic setup
+
+```go
+// Initialize authentication during startup
+err := auth.Initialize()
+if err != nil {
+    log.Fatal(err)
+}
+
+// Check if auth is enabled
+if auth.IsEnabled() {
+    log.Println("Authentication is enabled")
+}
+
+// Check OIDC status
+if auth.IsOIDCEnabled() {
+    log.Println("OIDC authentication configured")
+}
+```
+
+### Using AuthOrProceed middleware
+
+```go
+func protectedHandler(w http.ResponseWriter, r *http.Request) {
+    if !auth.AuthOrProceed(w, r) {
+        return // Auth failed, login handler was invoked
+    }
+    // Continue with authenticated request
+}
+```
+
+### Using AuthCheckHandler
+
+```go
+http.HandleFunc("/api/", auth.AuthCheckHandler(apiHandler))
+```
+
+### Custom OIDC provider
+
+```go
+provider, err := auth.NewOIDCProvider(
+    "https://your-idp.com",
+    "your-client-id",
+    "your-client-secret",
+    []string{"user1", "user2"},
+    []string{"group1"},
+)
+if err != nil {
+    log.Fatal(err)
+}
+```
+
+### Custom userpass provider
+
+```go
+provider, err := auth.NewUserPassAuth(
+    "admin",
+    "password123",
+    []byte("jwt-secret-key"),
+    24*time.Hour,
+)
+if err != nil {
+    log.Fatal(err)
+}
+```

internal/auth/auth.go

@@ -65,14 +65,12 @@ func AuthCheckHandler(w http.ResponseWriter, r *http.Request) {
 
 func AuthOrProceed(w http.ResponseWriter, r *http.Request) (proceed bool) {
 	if defaultAuth == nil {
-		w.WriteHeader(http.StatusServiceUnavailable)
-		return false
+		return true
 	}
 	err := defaultAuth.CheckToken(r)
 	if err != nil {
 		defaultAuth.LoginHandler(w, r)
 		return false
-	} else {
-		return true
 	}
+	return true
 }

internal/auth/block_page.go

@@ -12,11 +12,12 @@ var blockPageHTML string
 
 var blockPageTemplate = template.Must(template.New("block_page").Parse(blockPageHTML))
 
-func WriteBlockPage(w http.ResponseWriter, status int, error string, logoutURL string) {
+func WriteBlockPage(w http.ResponseWriter, status int, errorMessage, actionText, actionURL string) {
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	blockPageTemplate.Execute(w, map[string]string{
 		"StatusText": http.StatusText(status),
-		"Error":      error,
-		"LogoutURL":  logoutURL,
+		"Error":      errorMessage,
+		"ActionURL":  actionURL,
+		"ActionText": actionText,
 	})
 }

internal/auth/block_page.html

@@ -1,14 +1,231 @@
 <!DOCTYPE html>
 <html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
     <title>Access Denied</title>
-</head>
-<body>
-    <h1>{{.StatusText}}</h1>
-    <p>{{.Error}}</p>
-    <a href="{{.LogoutURL}}">Logout</a>
-</body>
+    <meta name="color-scheme" content="dark" />
+    <style>
+      :root {
+        color-scheme: dark;
+        --bg0: #070a12;
+        --bg1: #0b1020;
+        --card: rgba(255, 255, 255, 0.055);
+        --card2: rgba(255, 255, 255, 0.05);
+        --text: rgba(255, 255, 255, 0.92);
+        --muted: rgba(255, 255, 255, 0.68);
+        --border: rgba(255, 255, 255, 0.12);
+        --borderSoft: rgba(255, 255, 255, 0.08);
+        --borderStrong: rgba(255, 255, 255, 0.14);
+        --borderHover: rgba(255, 255, 255, 0.22);
+        --shadow: 0 22px 60px rgba(0, 0, 0, 0.55);
+        --shadowCard: 0 22px 60px rgba(0, 0, 0, 0.58);
+        --shadowButton: 0 12px 28px rgba(0, 0, 0, 0.35);
+        --insetHighlight: inset 0 1px 0 rgba(255, 255, 255, 0.04);
+        --ring: rgba(120, 160, 210, 0.42);
+        --accent0: #7aa3c8;
+        --accent1: #9a8bc7;
+        --btn: rgba(255, 255, 255, 0.06);
+        --btnHover: rgba(255, 255, 255, 0.08);
+      }
+
+      * {
+        box-sizing: border-box;
+      }
+
+      html,
+      body {
+        height: 100%;
+      }
+
+      body {
+        margin: 0;
+        font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
+          Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
+        color: var(--text);
+        background-color: var(--bg1);
+        background-image: none;
+      }
+
+      .wrap {
+        min-height: 100%;
+        display: grid;
+        place-items: center;
+        padding: 28px 16px;
+      }
+
+      .card {
+        width: min(720px, 100%);
+        background: var(--card);
+        border: 1px solid var(--border);
+        border-radius: 16px;
+        box-shadow: var(--shadowCard), var(--insetHighlight);
+        overflow: hidden;
+      }
+
+      .topbar {
+        display: flex;
+        align-items: center;
+        gap: 12px;
+        padding: 18px 18px 12px;
+        border-bottom: 1px solid var(--borderSoft);
+        background: var(--card2);
+      }
+
+      .badge {
+        width: 38px;
+        height: 38px;
+        border-radius: 12px;
+        display: grid;
+        place-items: center;
+        border: 1px solid var(--borderStrong);
+        background: var(--card2);
+      }
+
+      .badge svg {
+        opacity: 0.95;
+      }
+
+      .badge .bang {
+        font-size: 22px;
+        line-height: 1;
+        font-weight: 700;
+        color: rgba(255, 255, 255, 0.9);
+        transform: translateY(-1px);
+      }
+
+      h1 {
+        margin: 0;
+        font-size: 18px;
+        line-height: 1.25;
+        letter-spacing: 0.2px;
+      }
+
+      .sub {
+        margin: 2px 0 0;
+        font-size: 13px;
+        color: var(--muted);
+      }
+
+      .content {
+        padding: 18px;
+      }
+
+      .error {
+        margin: 0;
+        padding: 14px 14px;
+        border-radius: 12px;
+        border: 1px solid rgba(255, 255, 255, 0.1);
+        background: rgba(0, 0, 0, 0.25);
+        color: rgba(255, 255, 255, 0.8);
+        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
+          Liberation Mono, Courier New, monospace;
+        font-size: 13px;
+        line-height: 1.55;
+        white-space: pre-wrap;
+        word-break: break-word;
+        text-transform: capitalize;
+      }
+
+      .actions {
+        display: flex;
+        gap: 10px;
+        flex-wrap: wrap;
+        align-items: center;
+        margin-top: 14px;
+      }
+
+      a.button {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        gap: 8px;
+        padding: 8px 12px;
+        border-radius: 10px;
+        font-size: 14px;
+        text-decoration: none;
+        color: rgba(255, 255, 255, 0.92);
+        border: 1px solid var(--borderStrong);
+        background: var(--btn);
+        transition: transform 120ms ease, border-color 120ms ease,
+          background 120ms ease, box-shadow 120ms ease;
+        box-shadow: var(--shadowButton);
+      }
+
+      a.button:hover {
+        transform: translateY(-1px);
+        border-color: var(--borderHover);
+        background: var(--btnHover);
+      }
+
+      a.button:focus-visible {
+        outline: 0;
+        box-shadow: 0 0 0 3px var(--ring), var(--shadowButton);
+      }
+
+      .hint {
+        color: var(--muted);
+        font-size: 12px;
+        line-height: 1.4;
+      }
+
+      .hint kbd {
+        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
+          Liberation Mono, Courier New, monospace;
+        font-size: 11px;
+        padding: 2px 4px;
+        border-radius: 6px;
+        border: 1px solid var(--borderStrong);
+        background: var(--btn);
+        color: rgba(255, 255, 255, 0.86);
+      }
+
+      kbd {
+        font-weight: 500;
+      }
+
+      .kbd-container {
+        display: inline-flex;
+        gap: 2px;
+        align-items: center;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="wrap">
+      <main class="card" role="main" aria-labelledby="title">
+        <header class="topbar">
+          <div class="badge" aria-hidden="true">
+            <span class="bang">!</span>
+          </div>
+          <div>
+            <h1 id="title">{{.StatusText}}</h1>
+            <p class="sub">
+              You don’t have permission to access this resource.
+            </p>
+          </div>
+        </header>
+
+        <section class="content">
+          <pre class="error">{{.Error}}</pre>
+          <div class="actions">
+            <a class="button" href="{{.ActionURL}}">
+              <span>{{.ActionText}}</span>
+              <span aria-hidden="true">→</span>
+            </a>
+            <div class="hint">
+              If you just signed in, try refreshing the page.
+              <span aria-hidden="true"> </span>
+              <div class="kbd-container">
+                <kbd>Ctrl</kbd>
+                <span>+</span>
+                <kbd>R</kbd>
+              </div>
+            </div>
+          </div>
+        </section>
+      </main>
+    </div>
+  </body>
 </html>

internal/auth/oidc.go

@@ -32,6 +32,8 @@ type (
 		allowedUsers  []string
 		allowedGroups []string
 
+		rateLimit *rate.Limiter
+
 		onUnknownPathHandler http.HandlerFunc
 	}
 
@@ -66,9 +68,9 @@ func (auth *OIDCProvider) getAppScopedCookieName(baseName string) string {
 
 const (
 	OIDCAuthInitPath = "/"
-	OIDCAuthBasePath = "/auth"
-	OIDCPostAuthPath = OIDCAuthBasePath + "/callback"
-	OIDCLogoutPath   = OIDCAuthBasePath + "/logout"
+	OIDCAuthBasePath = "/auth/"
+	OIDCPostAuthPath = OIDCAuthBasePath + "callback"
+	OIDCLogoutPath   = OIDCAuthBasePath + "logout"
 )
 
 var (
@@ -123,6 +125,7 @@ func NewOIDCProvider(issuerURL, clientID, clientSecret string, allowedUsers, all
 		endSessionURL: endSessionURL,
 		allowedUsers:  allowedUsers,
 		allowedGroups: allowedGroups,
+		rateLimit:     rate.NewLimiter(rate.Every(common.OIDCRateLimitPeriod), common.OIDCRateLimit),
 	}, nil
 }
 
@@ -165,6 +168,7 @@ func NewOIDCProviderWithCustomClient(baseProvider *OIDCProvider, clientID, clien
 		endSessionURL: baseProvider.endSessionURL,
 		allowedUsers:  baseProvider.allowedUsers,
 		allowedGroups: baseProvider.allowedGroups,
+		rateLimit:     baseProvider.rateLimit,
 	}, nil
 }
 
@@ -228,9 +232,12 @@ func (auth *OIDCProvider) HandleAuth(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-var rateLimit = rate.NewLimiter(rate.Every(time.Second), 1)
-
 func (auth *OIDCProvider) LoginHandler(w http.ResponseWriter, r *http.Request) {
+	if !httputils.GetAccept(r.Header).AcceptHTML() {
+		http.Error(w, "authentication is required", http.StatusForbidden)
+		return
+	}
+
 	// check for session token
 	sessionToken, err := r.Cookie(auth.getAppScopedCookieName(CookieOauthSessionToken))
 	if err == nil { // session token exists
@@ -250,8 +257,8 @@ func (auth *OIDCProvider) LoginHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if !rateLimit.Allow() {
-		http.Error(w, "auth rate limit exceeded", http.StatusTooManyRequests)
+	if !auth.rateLimit.Allow() {
+		WriteBlockPage(w, http.StatusTooManyRequests, "auth rate limit exceeded", "Try again", OIDCAuthInitPath)
 		return
 	}
 
@@ -318,34 +325,39 @@ func (auth *OIDCProvider) PostAuthCallbackHandler(w http.ResponseWriter, r *http
 	// verify state
 	state, err := r.Cookie(auth.getAppScopedCookieName(CookieOauthState))
 	if err != nil {
-		http.Error(w, "missing state cookie", http.StatusBadRequest)
+		auth.clearCookie(w, r)
+		WriteBlockPage(w, http.StatusBadRequest, "missing state cookie", "Back to Login", OIDCAuthInitPath)
 		return
 	}
 	if r.URL.Query().Get("state") != state.Value {
-		http.Error(w, "invalid oauth state", http.StatusBadRequest)
+		auth.clearCookie(w, r)
+		WriteBlockPage(w, http.StatusBadRequest, "invalid oauth state", "Back to Login", OIDCAuthInitPath)
 		return
 	}
 
 	code := r.URL.Query().Get("code")
 	oauth2Token, err := auth.oauthConfig.Exchange(r.Context(), code, optRedirectPostAuth(r))
 	if err != nil {
-		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-		httputils.LogError(r).Msg(fmt.Sprintf("failed to exchange token: %v", err))
+		auth.clearCookie(w, r)
+		WriteBlockPage(w, http.StatusInternalServerError, "failed to exchange token", "Try again", OIDCAuthInitPath)
+		httputils.LogError(r).Msgf("failed to exchange token: %v", err)
 		return
 	}
 
 	idTokenJWT, idToken, err := auth.getIDToken(r.Context(), oauth2Token)
 	if err != nil {
-		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-		httputils.LogError(r).Msg(fmt.Sprintf("failed to get ID token: %v", err))
+		auth.clearCookie(w, r)
+		WriteBlockPage(w, http.StatusInternalServerError, "failed to get ID token", "Try again", OIDCAuthInitPath)
+		httputils.LogError(r).Msgf("failed to get ID token: %v", err)
 		return
 	}
 
 	if oauth2Token.RefreshToken != "" {
 		claims, err := parseClaims(idToken)
 		if err != nil {
-			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			httputils.LogError(r).Msg(fmt.Sprintf("failed to parse claims: %v", err))
+			auth.clearCookie(w, r)
+			WriteBlockPage(w, http.StatusInternalServerError, "failed to parse claims", "Try again", OIDCAuthInitPath)
+			httputils.LogError(r).Msgf("failed to parse claims: %v", err)
 			return
 		}
 		session := newSession(claims.Username, claims.Groups)

internal/auth/oidc_test.go

@@ -15,6 +15,7 @@ import (
 	"github.com/golang-jwt/jwt/v5"
 	"github.com/yusing/godoxy/internal/common"
 	"golang.org/x/oauth2"
+	"golang.org/x/time/rate"
 
 	expect "github.com/yusing/goutils/testing"
 )
@@ -42,6 +43,7 @@ func setupMockOIDC(t *testing.T) {
 		}),
 		allowedUsers:  []string{"test-user"},
 		allowedGroups: []string{"test-group1", "test-group2"},
+		rateLimit:     rate.NewLimiter(rate.Every(common.OIDCRateLimitPeriod), common.OIDCRateLimit),
 	}
 }
 

internal/autocert/README.md

@@ -0,0 +1,349 @@
+# Autocert Package
+
+Automated SSL certificate management using the ACME protocol (Let's Encrypt and compatible CAs).
+
+## Overview
+
+### Purpose
+
+This package provides complete SSL certificate lifecycle management:
+
+- ACME account registration and management
+- Certificate issuance via DNS-01 challenge
+- Automatic renewal scheduling (1 month before expiry)
+- SNI-based certificate selection for multi-domain setups
+
+### Primary Consumers
+
+- `goutils/server` - TLS handshake certificate provider
+- `internal/api/v1/cert/` - REST API for certificate management
+- Configuration loading via `internal/config/`
+
+### Non-goals
+
+- HTTP-01 challenge support
+- Certificate transparency log monitoring
+- OCSP stapling
+- Private CA support (except via custom CADirURL)
+
+### Stability
+
+Internal package with stable public APIs. ACME protocol compliance depends on lego library.
+
+## Public API
+
+### Config (`config.go`)
+
+```go
+type Config struct {
+    Email       string                       // ACME account email
+    Domains     []string                     // Domains to certify
+    CertPath    string                       // Output cert path
+    KeyPath     string                       // Output key path
+    Extra       []ConfigExtra                // Additional cert configs
+    ACMEKeyPath string                       // ACME account private key
+    Provider    string                       // DNS provider name
+    Options     map[string]strutils.Redacted // Provider options
+    Resolvers   []string                     // DNS resolvers
+    CADirURL    string                       // Custom ACME CA directory
+    CACerts     []string                     // Custom CA certificates
+    EABKid      string                       // External Account Binding Key ID
+    EABHmac     string                       // External Account Binding HMAC
+}
+
+// Merge extra config with main provider
+func MergeExtraConfig(mainCfg *Config, extraCfg *ConfigExtra) ConfigExtra
+```
+
+### Provider (`provider.go`)
+
+```go
+type Provider struct {
+    logger       zerolog.Logger
+    cfg          *Config
+    user         *User
+    legoCfg      *lego.Config
+    client       *lego.Client
+    lastFailure  time.Time
+    legoCert     *certificate.Resource
+    tlsCert      *tls.Certificate
+    certExpiries CertExpiries
+    extraProviders []*Provider
+    sniMatcher   sniMatcher
+}
+
+// Create new provider (initializes extras atomically)
+func NewProvider(cfg *Config, user *User, legoCfg *lego.Config) (*Provider, error)
+
+// TLS certificate getter for SNI
+func (p *Provider) GetCert(hello *tls.ClientHelloInfo) (*tls.Certificate, error)
+
+// Certificate info for API
+func (p *Provider) GetCertInfos() ([]CertInfo, error)
+
+// Provider name ("main" or "extra[N]")
+func (p *Provider) GetName() string
+
+// Obtain certificate if not exists
+func (p *Provider) ObtainCertIfNotExistsAll() error
+
+// Force immediate renewal
+func (p *Provider) ForceExpiryAll() bool
+
+// Schedule automatic renewal
+func (p *Provider) ScheduleRenewalAll(parent task.Parent)
+
+// Print expiry dates
+func (p *Provider) PrintCertExpiriesAll()
+```
+
+### User (`user.go`)
+
+```go
+type User struct {
+    Email        string                    // Account email
+    Registration *registration.Resource    // ACME registration
+    Key          crypto.PrivateKey         // Account key
+}
+```
+
+## Architecture
+
+### Certificate Lifecycle
+
+```mermaid
+flowchart TD
+    A[Start] --> B[Load Existing Cert]
+    B --> C{Cert Exists?}
+    C -->|Yes| D[Load Cert from Disk]
+    C -->|No| E[Obtain New Cert]
+
+    D --> F{Valid & Not Expired?}
+    F -->|Yes| G[Schedule Renewal]
+    F -->|No| H{Renewal Time?}
+    H -->|Yes| I[Renew Certificate]
+    H -->|No| G
+
+    E --> J[Init ACME Client]
+    J --> K[Register Account]
+    K --> L[DNS-01 Challenge]
+    L --> M[Complete Challenge]
+    M --> N[Download Certificate]
+    N --> O[Save to Disk]
+    O --> G
+
+    G --> P[Wait Until Renewal Time]
+    P --> Q[Trigger Renewal]
+    Q --> I
+
+    I --> R[Renew via ACME]
+    R --> S{Same Domains?}
+    S -->|Yes| T[Bundle & Save]
+    S -->|No| U[Re-obtain Certificate]
+    U --> T
+
+    T --> V[Update SNI Matcher]
+    V --> G
+
+    style E fill:#22553F,color:#fff
+    style I fill:#8B8000,color:#fff
+    style N fill:#22553F,color:#fff
+    style U fill:#84261A,color:#fff
+```
+
+### SNI Matching Flow
+
+```mermaid
+flowchart LR
+    Client["TLS Client"] -->|ClientHello SNI| Proxy["GoDoxy Proxy"]
+    Proxy -->|Certificate| Client
+
+    subgraph "SNI Matching Process"
+        direction TB
+        A[Extract SNI from ClientHello] --> B{Normalize SNI}
+        B --> C{Exact Match?}
+        C -->|Yes| D[Return cert]
+        C -->|No| E[Wildcard Suffix Tree]
+        E --> F{Match Found?}
+        F -->|Yes| D
+        F -->|No| G[Return default cert]
+    end
+
+    style C fill:#27632A,color:#fff
+    style E fill:#18597A,color:#fff
+    style F fill:#836C03,color:#fff
+```
+
+### Suffix Tree Structure
+
+```
+Certificate: *.example.com, example.com, *.api.example.com
+
+exact:
+  "example.com" -> Provider_A
+
+root:
+  └── "com"
+      └── "example"
+          ├── "*" -> Provider_A  [wildcard at *.example.com]
+          └── "api"
+              └── "*" -> Provider_B  [wildcard at *.api.example.com]
+```
+
+## Configuration Surface
+
+### Provider Types
+
+| Type           | Description                  | Use Case                  |
+| -------------- | ---------------------------- | ------------------------- |
+| `local`        | No ACME, use existing cert   | Pre-existing certificates |
+| `pseudo`       | Mock provider for testing    | Development               |
+| ACME providers | Let's Encrypt, ZeroSSL, etc. | Production                |
+
+### Supported DNS Providers
+
+| Provider     | Name           | Required Options                    |
+| ------------ | -------------- | ----------------------------------- |
+| Cloudflare   | `cloudflare`   | `CF_API_TOKEN`                      |
+| Route 53     | `route53`      | AWS credentials                     |
+| DigitalOcean | `digitalocean` | `DO_API_TOKEN`                      |
+| GoDaddy      | `godaddy`      | `GD_API_KEY`, `GD_API_SECRET`       |
+| OVH          | `ovh`          | `OVH_ENDPOINT`, `OVH_APP_KEY`, etc. |
+| CloudDNS     | `clouddns`     | GCP credentials                     |
+| AzureDNS     | `azuredns`     | Azure credentials                   |
+| DuckDNS      | `duckdns`      | `DUCKDNS_TOKEN`                     |
+
+### Example Configuration
+
+```yaml
+autocert:
+  provider: cloudflare
+  email: admin@example.com
+  domains:
+    - example.com
+    - "*.example.com"
+  options:
+    auth_token: ${CF_API_TOKEN}
+  resolvers:
+    - 1.1.1.1:53
+```
+
+### Extra Providers
+
+```yaml
+autocert:
+  provider: cloudflare
+  email: admin@example.com
+  domains:
+    - example.com
+    - "*.example.com"
+  cert_path: certs/example.com.crt
+  key_path: certs/example.com.key
+  options:
+    auth_token: ${CF_API_TOKEN}
+  extra:
+    - domains:
+        - api.example.com
+        - "*.api.example.com"
+      cert_path: certs/api.example.com.crt
+      key_path: certs/api.example.com.key
+```
+
+## Dependency and Integration Map
+
+### External Dependencies
+
+- `github.com/go-acme/lego/v4` - ACME protocol implementation
+- `github.com/rs/zerolog` - Structured logging
+
+### Internal Dependencies
+
+- `internal/task/task.go` - Lifetime management
+- `internal/notif/` - Renewal notifications
+- `internal/config/` - Configuration loading
+- `internal/dnsproviders/` - DNS provider implementations
+
+## Observability
+
+### Logs
+
+| Level   | When                          |
+| ------- | ----------------------------- |
+| `Info`  | Certificate obtained/renewed  |
+| `Info`  | Registration reused           |
+| `Warn`  | Renewal failure               |
+| `Error` | Certificate retrieval failure |
+
+### Notifications
+
+- Certificate renewal success/failure
+- Service startup with expiry dates
+
+## Security Considerations
+
+- Account private key stored at `certs/acme.key` (mode 0600)
+- Certificate private keys stored at configured paths (mode 0600)
+- Certificate files world-readable (mode 0644)
+- ACME account email used for Let's Encrypt ToS
+- EAB credentials for zero-touch enrollment
+
+## Failure Modes and Recovery
+
+| Failure Mode                   | Impact                     | Recovery                      |
+| ------------------------------ | -------------------------- | ----------------------------- |
+| DNS-01 challenge timeout       | Certificate issuance fails | Check DNS provider API        |
+| Rate limiting (too many certs) | 1-hour cooldown            | Wait or use different account |
+| DNS provider API error         | Renewal fails              | 1-hour cooldown, retry        |
+| Certificate domains mismatch   | Must re-obtain             | Force renewal via API         |
+| Account key corrupted          | Must register new account  | New key, may lose certs       |
+
+### Failure Tracking
+
+Last failure persisted per-certificate to prevent rate limiting:
+
+```
+File: <cert_dir>/.last_failure-<hash>
+Where hash = SHA256(certPath|keyPath)[:6]
+```
+
+## Usage Examples
+
+### Initial Setup
+
+```go
+autocertCfg := state.AutoCert
+user, legoCfg, err := autocertCfg.GetLegoConfig()
+if err != nil {
+    return err
+}
+
+provider, err := autocert.NewProvider(autocertCfg, user, legoCfg)
+if err != nil {
+    return fmt.Errorf("autocert error: %w", err)
+}
+
+if err := provider.ObtainCertIfNotExistsAll(); err != nil {
+    return fmt.Errorf("failed to obtain certificates: %w", err)
+}
+
+provider.ScheduleRenewalAll(state.Task())
+provider.PrintCertExpiriesAll()
+```
+
+### Force Renewal via API
+
+```go
+// WebSocket endpoint: GET /api/v1/cert/renew
+if provider.ForceExpiryAll() {
+    // Wait for renewal to complete
+    provider.WaitRenewalDone(ctx)
+}
+```
+
+## Testing Notes
+
+- `config_test.go` - Configuration validation
+- `provider_test/` - Provider functionality tests
+- `sni_test.go` - SNI matching tests
+- `multi_cert_test.go` - Extra provider tests
+- Integration tests require mock DNS provider

internal/autocert/config.go

@@ -5,6 +5,7 @@ import (
 	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/x509"
+	"fmt"
 	"net/http"
 	"os"
 	"regexp"
@@ -16,16 +17,19 @@ import (
 	"github.com/rs/zerolog/log"
 	"github.com/yusing/godoxy/internal/common"
 	gperr "github.com/yusing/goutils/errs"
+	strutils "github.com/yusing/goutils/strings"
 )
 
+type ConfigExtra Config
 type Config struct {
-	Email       string         `json:"email,omitempty"`
-	Domains     []string       `json:"domains,omitempty"`
-	CertPath    string         `json:"cert_path,omitempty"`
-	KeyPath     string         `json:"key_path,omitempty"`
-	ACMEKeyPath string         `json:"acme_key_path,omitempty"`
-	Provider    string         `json:"provider,omitempty"`
-	Options     map[string]any `json:"options,omitempty"`
+	Email       string                       `json:"email,omitempty"`
+	Domains     []string                     `json:"domains,omitempty"`
+	CertPath    string                       `json:"cert_path,omitempty"`
+	KeyPath     string                       `json:"key_path,omitempty"`
+	Extra       []ConfigExtra                `json:"extra,omitempty"`
+	ACMEKeyPath string                       `json:"acme_key_path,omitempty"` // shared by all extra providers
+	Provider    string                       `json:"provider,omitempty"`
+	Options     map[string]strutils.Redacted `json:"options,omitempty"`
 
 	Resolvers []string `json:"resolvers,omitempty"`
 
@@ -40,13 +44,13 @@ type Config struct {
 	HTTPClient *http.Client `json:"-"` // for tests only
 
 	challengeProvider challenge.Provider
+
+	idx int // 0: main, 1+: extra[i]
 }
 
 var (
-	ErrMissingDomain   = gperr.New("missing field 'domains'")
-	ErrMissingEmail    = gperr.New("missing field 'email'")
-	ErrMissingProvider = gperr.New("missing field 'provider'")
-	ErrMissingCADirURL = gperr.New("missing field 'ca_dir_url'")
+	ErrMissingField    = gperr.New("missing field")
+	ErrDuplicatedPath  = gperr.New("duplicated path")
 	ErrInvalidDomain   = gperr.New("invalid domain")
 	ErrUnknownProvider = gperr.New("unknown provider")
 )
@@ -61,69 +65,22 @@ var domainOrWildcardRE = regexp.MustCompile(`^\*?([^.]+\.)+[^.]+$`)
 
 // Validate implements the utils.CustomValidator interface.
 func (cfg *Config) Validate() gperr.Error {
-	if cfg == nil {
-		return nil
-	}
+	seenPaths := make(map[string]int) // path -> provider idx (0 for main, 1+ for extras)
+	return cfg.validate(seenPaths)
+}
 
+func (cfg *ConfigExtra) Validate() gperr.Error {
+	return nil // done by main config's validate
+}
+
+func (cfg *ConfigExtra) AsConfig() *Config {
+	return (*Config)(cfg)
+}
+
+func (cfg *Config) validate(seenPaths map[string]int) gperr.Error {
 	if cfg.Provider == "" {
 		cfg.Provider = ProviderLocal
-		return nil
 	}
-
-	b := gperr.NewBuilder("autocert errors")
-	if cfg.Provider == ProviderCustom && cfg.CADirURL == "" {
-		b.Add(ErrMissingCADirURL)
-	}
-
-	if cfg.Provider != ProviderLocal && cfg.Provider != ProviderPseudo {
-		if len(cfg.Domains) == 0 {
-			b.Add(ErrMissingDomain)
-		}
-		if cfg.Email == "" {
-			b.Add(ErrMissingEmail)
-		}
-		if cfg.Provider != ProviderCustom {
-			for i, d := range cfg.Domains {
-				if !domainOrWildcardRE.MatchString(d) {
-					b.Add(ErrInvalidDomain.Subjectf("domains[%d]", i))
-				}
-			}
-		}
-		// check if provider is implemented
-		providerConstructor, ok := Providers[cfg.Provider]
-		if !ok {
-			if cfg.Provider != ProviderCustom {
-				b.Add(ErrUnknownProvider.
-					Subject(cfg.Provider).
-					With(gperr.DoYouMeanField(cfg.Provider, Providers)))
-			}
-		} else {
-			provider, err := providerConstructor(cfg.Options)
-			if err != nil {
-				b.Add(err)
-			} else {
-				cfg.challengeProvider = provider
-			}
-		}
-	}
-
-	if cfg.challengeProvider == nil {
-		cfg.challengeProvider, _ = Providers[ProviderLocal](nil)
-	}
-	return b.Error()
-}
-
-func (cfg *Config) dns01Options() []dns01.ChallengeOption {
-	return []dns01.ChallengeOption{
-		dns01.CondOption(len(cfg.Resolvers) > 0, dns01.AddRecursiveNameservers(cfg.Resolvers)),
-	}
-}
-
-func (cfg *Config) GetLegoConfig() (*User, *lego.Config, gperr.Error) {
-	if err := cfg.Validate(); err != nil {
-		return nil, nil, err
-	}
-
 	if cfg.CertPath == "" {
 		cfg.CertPath = CertFileDefault
 	}
@@ -134,6 +91,83 @@ func (cfg *Config) GetLegoConfig() (*User, *lego.Config, gperr.Error) {
 		cfg.ACMEKeyPath = ACMEKeyFileDefault
 	}
 
+	b := gperr.NewBuilder("certificate error")
+
+	// check if cert_path is unique
+	if first, ok := seenPaths[cfg.CertPath]; ok {
+		b.Add(ErrDuplicatedPath.Subjectf("cert_path %s", cfg.CertPath).Withf("first seen in %s", fmt.Sprintf("extra[%d]", first)))
+	} else {
+		seenPaths[cfg.CertPath] = cfg.idx
+	}
+
+	// check if key_path is unique
+	if first, ok := seenPaths[cfg.KeyPath]; ok {
+		b.Add(ErrDuplicatedPath.Subjectf("key_path %s", cfg.KeyPath).Withf("first seen in %s", fmt.Sprintf("extra[%d]", first)))
+	} else {
+		seenPaths[cfg.KeyPath] = cfg.idx
+	}
+
+	if cfg.Provider == ProviderCustom && cfg.CADirURL == "" {
+		b.Add(ErrMissingField.Subject("ca_dir_url"))
+	}
+
+	if cfg.Provider != ProviderLocal && cfg.Provider != ProviderPseudo {
+		if len(cfg.Domains) == 0 {
+			b.Add(ErrMissingField.Subject("domains"))
+		}
+		if cfg.Email == "" {
+			b.Add(ErrMissingField.Subject("email"))
+		}
+		if cfg.Provider != ProviderCustom {
+			for i, d := range cfg.Domains {
+				if !domainOrWildcardRE.MatchString(d) {
+					b.Add(ErrInvalidDomain.Subjectf("domains[%d]", i))
+				}
+			}
+		}
+	}
+
+	// check if provider is implemented
+	providerConstructor, ok := Providers[cfg.Provider]
+	if !ok {
+		if cfg.Provider != ProviderCustom {
+			b.Add(ErrUnknownProvider.
+				Subject(cfg.Provider).
+				With(gperr.DoYouMeanField(cfg.Provider, Providers)))
+		}
+	} else {
+		provider, err := providerConstructor(cfg.Options)
+		if err != nil {
+			b.Add(err)
+		} else {
+			cfg.challengeProvider = provider
+		}
+	}
+
+	if cfg.challengeProvider == nil {
+		cfg.challengeProvider, _ = Providers[ProviderLocal](nil)
+	}
+
+	if len(cfg.Extra) > 0 {
+		for i := range cfg.Extra {
+			cfg.Extra[i] = MergeExtraConfig(cfg, &cfg.Extra[i])
+			cfg.Extra[i].AsConfig().idx = i + 1
+			err := cfg.Extra[i].AsConfig().validate(seenPaths)
+			if err != nil {
+				b.Add(err.Subjectf("extra[%d]", i))
+			}
+		}
+	}
+	return b.Error()
+}
+
+func (cfg *Config) dns01Options() []dns01.ChallengeOption {
+	return []dns01.ChallengeOption{
+		dns01.CondOption(len(cfg.Resolvers) > 0, dns01.AddRecursiveNameservers(cfg.Resolvers)),
+	}
+}
+
+func (cfg *Config) GetLegoConfig() (*User, *lego.Config, error) {
 	var privKey *ecdsa.PrivateKey
 	var err error
 
@@ -177,6 +211,46 @@ func (cfg *Config) GetLegoConfig() (*User, *lego.Config, gperr.Error) {
 	return user, legoCfg, nil
 }
 
+func MergeExtraConfig(mainCfg *Config, extraCfg *ConfigExtra) ConfigExtra {
+	merged := ConfigExtra(*mainCfg)
+	merged.Extra = nil
+	merged.CertPath = extraCfg.CertPath
+	merged.KeyPath = extraCfg.KeyPath
+	// NOTE: Using same ACME key as main provider
+
+	if extraCfg.Provider != "" {
+		merged.Provider = extraCfg.Provider
+	}
+	if extraCfg.Email != "" {
+		merged.Email = extraCfg.Email
+	}
+	if len(extraCfg.Domains) > 0 {
+		merged.Domains = extraCfg.Domains
+	}
+	if len(extraCfg.Options) > 0 {
+		merged.Options = extraCfg.Options
+	}
+	if len(extraCfg.Resolvers) > 0 {
+		merged.Resolvers = extraCfg.Resolvers
+	}
+	if extraCfg.CADirURL != "" {
+		merged.CADirURL = extraCfg.CADirURL
+	}
+	if len(extraCfg.CACerts) > 0 {
+		merged.CACerts = extraCfg.CACerts
+	}
+	if extraCfg.EABKid != "" {
+		merged.EABKid = extraCfg.EABKid
+	}
+	if extraCfg.EABHmac != "" {
+		merged.EABHmac = extraCfg.EABHmac
+	}
+	if extraCfg.HTTPClient != nil {
+		merged.HTTPClient = extraCfg.HTTPClient
+	}
+	return merged
+}
+
 func (cfg *Config) LoadACMEKey() (*ecdsa.PrivateKey, error) {
 	if common.IsTest {
 		return nil, os.ErrNotExist

internal/autocert/config_test.go

@@ -1,27 +1,32 @@
-package autocert
+package autocert_test
 
 import (
 	"fmt"
 	"testing"
 
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/internal/autocert"
+	"github.com/yusing/godoxy/internal/dnsproviders"
 	"github.com/yusing/godoxy/internal/serialization"
 )
 
 func TestEABConfigRequired(t *testing.T) {
+	dnsproviders.InitProviders()
+
 	tests := []struct {
 		name    string
-		cfg     *Config
+		cfg     *autocert.Config
 		wantErr bool
 	}{
-		{name: "Missing EABKid", cfg: &Config{EABHmac: "1234567890"}, wantErr: true},
-		{name: "Missing EABHmac", cfg: &Config{EABKid: "1234567890"}, wantErr: true},
-		{name: "Valid EAB", cfg: &Config{EABKid: "1234567890", EABHmac: "1234567890"}, wantErr: false},
+		{name: "Missing EABKid", cfg: &autocert.Config{EABHmac: "1234567890"}, wantErr: true},
+		{name: "Missing EABHmac", cfg: &autocert.Config{EABKid: "1234567890"}, wantErr: true},
+		{name: "Valid EAB", cfg: &autocert.Config{EABKid: "1234567890", EABHmac: "1234567890"}, wantErr: false},
 	}
 
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			yaml := fmt.Appendf(nil, "eab_kid: %s\neab_hmac: %s", test.cfg.EABKid, test.cfg.EABHmac)
-			cfg := Config{}
+			cfg := autocert.Config{}
 			err := serialization.UnmarshalValidateYAML(yaml, &cfg)
 			if (err != nil) != test.wantErr {
 				t.Errorf("Validate() error = %v, wantErr %v", err, test.wantErr)
@@ -29,3 +34,27 @@ func TestEABConfigRequired(t *testing.T) {
 		})
 	}
 }
+
+func TestExtraCertKeyPathsUnique(t *testing.T) {
+	t.Run("duplicate cert_path rejected", func(t *testing.T) {
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: "a.crt", KeyPath: "a.key"},
+				{CertPath: "a.crt", KeyPath: "b.key"},
+			},
+		}
+		require.Error(t, cfg.Validate())
+	})
+
+	t.Run("duplicate key_path rejected", func(t *testing.T) {
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: "a.crt", KeyPath: "a.key"},
+				{CertPath: "b.crt", KeyPath: "a.key"},
+			},
+		}
+		require.Error(t, cfg.Validate())
+	})
+}

internal/autocert/paths.go

@@ -5,5 +5,4 @@ const (
 	CertFileDefault    = certBasePath + "cert.crt"
 	KeyFileDefault     = certBasePath + "priv.key"
 	ACMEKeyFileDefault = certBasePath + "acme.key"
-	LastFailureFile    = certBasePath + ".last_failure"
 )

internal/autocert/provider.go

@@ -1,15 +1,19 @@
 package autocert
 
 import (
+	"context"
+	"crypto/sha256"
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
 	"fmt"
+	"io/fs"
 	"maps"
 	"os"
-	"path"
+	"path/filepath"
 	"slices"
 	"strings"
+	"sync"
 	"sync/atomic"
 	"time"
 
@@ -27,21 +31,44 @@ import (
 
 type (
 	Provider struct {
+		logger zerolog.Logger
+
 		cfg         *Config
 		user        *User
 		legoCfg     *lego.Config
 		client      *lego.Client
 		lastFailure time.Time
 
+		lastFailureFile string
+
 		legoCert     *certificate.Resource
 		tlsCert      *tls.Certificate
 		certExpiries CertExpiries
+
+		extraProviders []*Provider
+		sniMatcher     sniMatcher
+
+		forceRenewalCh     chan struct{}
+		forceRenewalDoneCh atomic.Value // chan struct{}
+
+		scheduleRenewalOnce sync.Once
 	}
 
 	CertExpiries map[string]time.Time
+
+	CertInfo struct {
+		Subject        string   `json:"subject"`
+		Issuer         string   `json:"issuer"`
+		NotBefore      int64    `json:"not_before"`
+		NotAfter       int64    `json:"not_after"`
+		DNSNames       []string `json:"dns_names"`
+		EmailAddresses []string `json:"email_addresses"`
+	} // @name CertInfo
+
+	RenewMode uint8
 )
 
-var ErrGetCertFailure = errors.New("get certificate failed")
+var ErrNoCertificates = errors.New("no certificates found")
 
 const (
 	// renew failed for whatever reason, 1 hour cooldown
@@ -50,26 +77,80 @@ const (
 	requestCooldownDuration = 15 * time.Second
 )
 
+const (
+	renewModeForce = iota
+	renewModeIfNeeded
+)
+
 // could be nil
 var ActiveProvider atomic.Pointer[Provider]
 
-func NewProvider(cfg *Config, user *User, legoCfg *lego.Config) *Provider {
-	return &Provider{
-		cfg:     cfg,
-		user:    user,
-		legoCfg: legoCfg,
+func NewProvider(cfg *Config, user *User, legoCfg *lego.Config) (*Provider, error) {
+	p := &Provider{
+		cfg:             cfg,
+		user:            user,
+		legoCfg:         legoCfg,
+		lastFailureFile: lastFailureFileFor(cfg.CertPath, cfg.KeyPath),
+		forceRenewalCh:  make(chan struct{}, 1),
 	}
+	p.forceRenewalDoneCh.Store(emptyForceRenewalDoneCh)
+
+	if cfg.idx == 0 {
+		p.logger = log.With().Str("provider", "main").Logger()
+	} else {
+		p.logger = log.With().Str("provider", fmt.Sprintf("extra[%d]", cfg.idx)).Logger()
+	}
+	if err := p.setupExtraProviders(); err != nil {
+		return nil, err
+	}
+	return p, nil
 }
 
-func (p *Provider) GetCert(_ *tls.ClientHelloInfo) (*tls.Certificate, error) {
+func (p *Provider) GetCert(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
 	if p.tlsCert == nil {
-		return nil, ErrGetCertFailure
+		return nil, ErrNoCertificates
+	}
+	if hello == nil || hello.ServerName == "" {
+		return p.tlsCert, nil
+	}
+	if prov := p.sniMatcher.match(hello.ServerName); prov != nil && prov.tlsCert != nil {
+		return prov.tlsCert, nil
 	}
 	return p.tlsCert, nil
 }
 
+func (p *Provider) GetCertInfos() ([]CertInfo, error) {
+	allProviders := p.allProviders()
+	certInfos := make([]CertInfo, 0, len(allProviders))
+	for _, provider := range allProviders {
+		if provider.tlsCert == nil {
+			continue
+		}
+		certInfos = append(certInfos, CertInfo{
+			Subject:        provider.tlsCert.Leaf.Subject.CommonName,
+			Issuer:         provider.tlsCert.Leaf.Issuer.CommonName,
+			NotBefore:      provider.tlsCert.Leaf.NotBefore.Unix(),
+			NotAfter:       provider.tlsCert.Leaf.NotAfter.Unix(),
+			DNSNames:       provider.tlsCert.Leaf.DNSNames,
+			EmailAddresses: provider.tlsCert.Leaf.EmailAddresses,
+		})
+	}
+
+	if len(certInfos) == 0 {
+		return nil, ErrNoCertificates
+	}
+	return certInfos, nil
+}
+
 func (p *Provider) GetName() string {
-	return p.cfg.Provider
+	if p.cfg.idx == 0 {
+		return "main"
+	}
+	return fmt.Sprintf("extra[%d]", p.cfg.idx)
+}
+
+func (p *Provider) fmtError(err error) error {
+	return gperr.PrependSubject(fmt.Sprintf("provider: %s", p.GetName()), err)
 }
 
 func (p *Provider) GetCertPath() string {
@@ -90,7 +171,7 @@ func (p *Provider) GetLastFailure() (time.Time, error) {
 	}
 
 	if p.lastFailure.IsZero() {
-		data, err := os.ReadFile(LastFailureFile)
+		data, err := os.ReadFile(p.lastFailureFile)
 		if err != nil {
 			if !os.IsNotExist(err) {
 				return time.Time{}, err
@@ -108,7 +189,7 @@ func (p *Provider) UpdateLastFailure() error {
 	}
 	t := time.Now()
 	p.lastFailure = t
-	return os.WriteFile(LastFailureFile, t.AppendFormat(nil, time.RFC3339), 0o600)
+	return os.WriteFile(p.lastFailureFile, t.AppendFormat(nil, time.RFC3339), 0o600)
 }
 
 func (p *Provider) ClearLastFailure() error {
@@ -116,29 +197,88 @@ func (p *Provider) ClearLastFailure() error {
 		return nil
 	}
 	p.lastFailure = time.Time{}
-	return os.Remove(LastFailureFile)
+	err := os.Remove(p.lastFailureFile)
+	if err != nil && !errors.Is(err, fs.ErrNotExist) {
+		return err
+	}
+	return nil
 }
 
+// allProviders returns all providers including this provider and all extra providers.
+func (p *Provider) allProviders() []*Provider {
+	return append([]*Provider{p}, p.extraProviders...)
+}
+
+// ObtainCertIfNotExistsAll obtains a new certificate for this provider and all extra providers if they do not exist.
+func (p *Provider) ObtainCertIfNotExistsAll() error {
+	errs := gperr.NewGroup("obtain cert error")
+
+	for _, provider := range p.allProviders() {
+		errs.Go(func() error {
+			if err := provider.obtainCertIfNotExists(); err != nil {
+				return fmt.Errorf("failed to obtain cert for %s: %w", provider.GetName(), err)
+			}
+			return nil
+		})
+	}
+
+	p.rebuildSNIMatcher()
+	return errs.Wait().Error()
+}
+
+// obtainCertIfNotExists obtains a new certificate for this provider if it does not exist.
+func (p *Provider) obtainCertIfNotExists() error {
+	err := p.LoadCert()
+	if err == nil {
+		return nil
+	}
+
+	if !errors.Is(err, fs.ErrNotExist) {
+		return err
+	}
+
+	// check last failure
+	lastFailure, err := p.GetLastFailure()
+	if err != nil {
+		return fmt.Errorf("failed to get last failure: %w", err)
+	}
+	if !lastFailure.IsZero() && time.Since(lastFailure) < requestCooldownDuration {
+		return fmt.Errorf("still in cooldown until %s", strutils.FormatTime(lastFailure.Add(requestCooldownDuration).Local()))
+	}
+
+	p.logger.Info().Msg("cert not found, obtaining new cert")
+	return p.ObtainCert()
+}
+
+// ObtainCertAll renews existing certificates or obtains new certificates for this provider and all extra providers.
+func (p *Provider) ObtainCertAll() error {
+	errs := gperr.NewGroup("obtain cert error")
+	for _, provider := range p.allProviders() {
+		errs.Go(func() error {
+			if err := provider.obtainCertIfNotExists(); err != nil {
+				return fmt.Errorf("failed to obtain cert for %s: %w", provider.GetName(), err)
+			}
+			return nil
+		})
+	}
+	return errs.Wait().Error()
+}
+
+// ObtainCert renews existing certificate or obtains a new certificate for this provider.
 func (p *Provider) ObtainCert() error {
 	if p.cfg.Provider == ProviderLocal {
 		return nil
 	}
 
 	if p.cfg.Provider == ProviderPseudo {
-		log.Info().Msg("init client for pseudo provider")
+		p.logger.Info().Msg("init client for pseudo provider")
 		<-time.After(time.Second)
-		log.Info().Msg("registering acme for pseudo provider")
+		p.logger.Info().Msg("registering acme for pseudo provider")
 		<-time.After(time.Second)
-		log.Info().Msg("obtained cert for pseudo provider")
+		p.logger.Info().Msg("obtained cert for pseudo provider")
 		return nil
 	}
 
-	if lastFailure, err := p.GetLastFailure(); err != nil {
-		return err
-	} else if time.Since(lastFailure) < requestCooldownDuration {
-		return fmt.Errorf("%w: still in cooldown until %s", ErrGetCertFailure, strutils.FormatTime(lastFailure.Add(requestCooldownDuration).Local()))
-	}
-
 	if p.client == nil {
 		if err := p.initClient(); err != nil {
 			return err
@@ -198,6 +338,7 @@ func (p *Provider) ObtainCert() error {
 	}
 	p.tlsCert = &tlsCert
 	p.certExpiries = expiries
+	p.rebuildSNIMatcher()
 
 	if err := p.ClearLastFailure(); err != nil {
 		return fmt.Errorf("failed to clear last failure: %w", err)
@@ -206,19 +347,37 @@ func (p *Provider) ObtainCert() error {
 }
 
 func (p *Provider) LoadCert() error {
+	var errs gperr.Builder
 	cert, err := tls.LoadX509KeyPair(p.cfg.CertPath, p.cfg.KeyPath)
 	if err != nil {
-		return fmt.Errorf("load SSL certificate: %w", err)
+		errs.Addf("load SSL certificate: %w", p.fmtError(err))
 	}
+
 	expiries, err := getCertExpiries(&cert)
 	if err != nil {
-		return fmt.Errorf("parse SSL certificate: %w", err)
+		errs.Addf("parse SSL certificate: %w", p.fmtError(err))
 	}
+
 	p.tlsCert = &cert
 	p.certExpiries = expiries
 
-	log.Info().Msgf("next cert renewal in %s", strutils.FormatDuration(time.Until(p.ShouldRenewOn())))
-	return p.renewIfNeeded()
+	for _, ep := range p.extraProviders {
+		if err := ep.LoadCert(); err != nil {
+			errs.Add(err)
+		}
+	}
+
+	p.rebuildSNIMatcher()
+	return errs.Error()
+}
+
+// PrintCertExpiriesAll prints the certificate expiries for this provider and all extra providers.
+func (p *Provider) PrintCertExpiriesAll() {
+	for _, provider := range p.allProviders() {
+		for domain, expiry := range provider.certExpiries {
+			p.logger.Info().Str("domain", domain).Msgf("certificate expire on %s", strutils.FormatTime(expiry))
+		}
+	}
 }
 
 // ShouldRenewOn returns the time at which the certificate should be renewed.
@@ -226,59 +385,126 @@ func (p *Provider) ShouldRenewOn() time.Time {
 	for _, expiry := range p.certExpiries {
 		return expiry.AddDate(0, -1, 0) // 1 month before
 	}
-	// this line should never be reached
-	panic("no certificate available")
+	// this line should never be reached in production, but will be useful for testing
+	return time.Now().AddDate(0, 1, 0) // 1 month after
 }
 
-func (p *Provider) ScheduleRenewal(parent task.Parent) {
+// ForceExpiryAll triggers immediate certificate renewal for this provider and all extra providers.
+// Returns true if the renewal was triggered, false if the renewal was dropped.
+//
+// If at least one renewal is triggered, returns true.
+func (p *Provider) ForceExpiryAll() (ok bool) {
+	doneCh := make(chan struct{})
+	if swapped := p.forceRenewalDoneCh.CompareAndSwap(emptyForceRenewalDoneCh, doneCh); !swapped { // already in progress
+		close(doneCh)
+		return false
+	}
+
+	select {
+	case p.forceRenewalCh <- struct{}{}:
+		ok = true
+	default:
+	}
+
+	for _, ep := range p.extraProviders {
+		if ep.ForceExpiryAll() {
+			ok = true
+		}
+	}
+
+	return ok
+}
+
+// WaitRenewalDone waits for the renewal to complete.
+// Returns false if the renewal was dropped.
+func (p *Provider) WaitRenewalDone(ctx context.Context) bool {
+	done, ok := p.forceRenewalDoneCh.Load().(chan struct{})
+	if !ok || done == nil {
+		return false
+	}
+	select {
+	case <-done:
+	case <-ctx.Done():
+		return false
+	}
+
+	for _, ep := range p.extraProviders {
+		if !ep.WaitRenewalDone(ctx) {
+			return false
+		}
+	}
+	return true
+}
+
+// ScheduleRenewalAll schedules the renewal of the certificate for this provider and all extra providers.
+func (p *Provider) ScheduleRenewalAll(parent task.Parent) {
+	p.scheduleRenewalOnce.Do(func() {
+		p.scheduleRenewal(parent)
+	})
+	for _, ep := range p.extraProviders {
+		ep.scheduleRenewalOnce.Do(func() {
+			ep.scheduleRenewal(parent)
+		})
+	}
+}
+
+var emptyForceRenewalDoneCh any = chan struct{}(nil)
+
+// scheduleRenewal schedules the renewal of the certificate for this provider.
+func (p *Provider) scheduleRenewal(parent task.Parent) {
 	if p.GetName() == ProviderLocal || p.GetName() == ProviderPseudo {
 		return
 	}
-	go func() {
-		renewalTime := p.ShouldRenewOn()
-		timer := time.NewTimer(time.Until(renewalTime))
-		defer timer.Stop()
 
-		task := parent.Subtask("cert-renew-scheduler", true)
+	timer := time.NewTimer(time.Until(p.ShouldRenewOn()))
+	task := parent.Subtask("cert-renew-scheduler:"+filepath.Base(p.cfg.CertPath), true)
+
+	renew := func(renewMode RenewMode) {
+		defer func() {
+			if done, ok := p.forceRenewalDoneCh.Swap(emptyForceRenewalDoneCh).(chan struct{}); ok && done != nil {
+				close(done)
+			}
+		}()
+
+		renewed, err := p.renew(renewMode)
+		if err != nil {
+			gperr.LogWarn("autocert: cert renew failed", p.fmtError(err))
+			notif.Notify(&notif.LogMessage{
+				Level: zerolog.ErrorLevel,
+				Title: fmt.Sprintf("SSL certificate renewal failed for %s", p.GetName()),
+				Body:  notif.MessageBody(err.Error()),
+			})
+			return
+		}
+		if renewed {
+			p.rebuildSNIMatcher()
+
+			notif.Notify(&notif.LogMessage{
+				Level: zerolog.InfoLevel,
+				Title: fmt.Sprintf("SSL certificate renewed for %s", p.GetName()),
+				Body:  notif.ListBody(p.cfg.Domains),
+			})
+
+			// Reset on success
+			if err := p.ClearLastFailure(); err != nil {
+				gperr.LogWarn("autocert: failed to clear last failure", p.fmtError(err))
+			}
+			timer.Reset(time.Until(p.ShouldRenewOn()))
+		}
+	}
+
+	go func() {
+		defer timer.Stop()
 		defer task.Finish(nil)
 
 		for {
 			select {
 			case <-task.Context().Done():
 				return
+			case <-p.forceRenewalCh:
+				renew(renewModeForce)
 			case <-timer.C:
-				// Retry after 1 hour on failure
-				lastFailure, err := p.GetLastFailure()
-				if err != nil {
-					gperr.LogWarn("autocert: failed to get last failure", err)
-					continue
-				}
-				if !lastFailure.IsZero() && time.Since(lastFailure) < renewalCooldownDuration {
-					continue
-				}
-				if err := p.renewIfNeeded(); err != nil {
-					gperr.LogWarn("autocert: cert renew failed", err)
-					if err := p.UpdateLastFailure(); err != nil {
-						gperr.LogWarn("autocert: failed to update last failure", err)
-					}
-					notif.Notify(&notif.LogMessage{
-						Level: zerolog.ErrorLevel,
-						Title: "SSL certificate renewal failed",
-						Body:  notif.MessageBody(err.Error()),
-					})
-					continue
-				}
-				notif.Notify(&notif.LogMessage{
-					Level: zerolog.InfoLevel,
-					Title: "SSL certificate renewed",
-					Body:  notif.ListBody(p.cfg.Domains),
-				})
-				// Reset on success
-				if err := p.ClearLastFailure(); err != nil {
-					gperr.LogWarn("autocert: failed to clear last failure", err)
-				}
-				renewalTime = p.ShouldRenewOn()
-				timer.Reset(time.Until(renewalTime))
+				renew(renewModeIfNeeded)
 			}
 		}
 	}()
@@ -334,10 +560,10 @@ func (p *Provider) saveCert(cert *certificate.Resource) error {
 	}
 	/* This should have been done in setup
 	but double check is always a good choice.*/
-	_, err := os.Stat(path.Dir(p.cfg.CertPath))
+	_, err := os.Stat(filepath.Dir(p.cfg.CertPath))
 	if err != nil {
 		if os.IsNotExist(err) {
-			if err = os.MkdirAll(path.Dir(p.cfg.CertPath), 0o755); err != nil {
+			if err = os.MkdirAll(filepath.Dir(p.cfg.CertPath), 0o755); err != nil {
 				return err
 			}
 		} else {
@@ -377,21 +603,42 @@ func (p *Provider) certState() CertState {
 	return CertStateValid
 }
 
-func (p *Provider) renewIfNeeded() error {
+func (p *Provider) renew(mode RenewMode) (renewed bool, err error) {
 	if p.cfg.Provider == ProviderLocal {
-		return nil
+		return false, nil
 	}
 
-	switch p.certState() {
-	case CertStateExpired:
-		log.Info().Msg("certs expired, renewing")
-	case CertStateMismatch:
-		log.Info().Msg("cert domains mismatch with config, renewing")
-	default:
-		return nil
+	if mode != renewModeForce {
+		// Retry after 1 hour on failure
+		lastFailure, err := p.GetLastFailure()
+		if err != nil {
+			return false, fmt.Errorf("failed to get last failure: %w", err)
+		}
+		if !lastFailure.IsZero() && time.Since(lastFailure) < renewalCooldownDuration {
+			until := lastFailure.Add(renewalCooldownDuration).Local()
+			return false, fmt.Errorf("still in cooldown until %s", strutils.FormatTime(until))
+		}
 	}
 
-	return p.ObtainCert()
+	if mode == renewModeIfNeeded {
+		switch p.certState() {
+		case CertStateExpired:
+			log.Info().Msg("certs expired, renewing")
+		case CertStateMismatch:
+			log.Info().Msg("cert domains mismatch with config, renewing")
+		default:
+			return false, nil
+		}
+	}
+
+	if mode == renewModeForce {
+		log.Info().Msg("force renewing cert by user request")
+	}
+
+	if err := p.ObtainCert(); err != nil {
+		return false, err
+	}
+	return true, nil
 }
 
 func getCertExpiries(cert *tls.Certificate) (CertExpiries, error) {
@@ -411,3 +658,21 @@ func getCertExpiries(cert *tls.Certificate) (CertExpiries, error) {
 	}
 	return r, nil
 }
+
+func lastFailureFileFor(certPath, keyPath string) string {
+	dir := filepath.Dir(certPath)
+	sum := sha256.Sum256([]byte(certPath + "|" + keyPath))
+	return filepath.Join(dir, fmt.Sprintf(".last_failure-%x", sum[:6]))
+}
+
+func (p *Provider) rebuildSNIMatcher() {
+	if p.cfg.idx != 0 { // only main provider has extra providers
+		return
+	}
+
+	p.sniMatcher = sniMatcher{}
+	p.sniMatcher.addProvider(p)
+	for _, ep := range p.extraProviders {
+		p.sniMatcher.addProvider(ep)
+	}
+}

internal/autocert/provider_test/custom_test.go

@@ -10,12 +10,15 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"encoding/pem"
+	"fmt"
 	"io"
 	"math/big"
 	"net"
 	"net/http"
 	"net/http/httptest"
+	"sort"
 	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -24,6 +27,368 @@ import (
 	"github.com/yusing/godoxy/internal/dnsproviders"
 )
 
+// TestACMEServer implements a minimal ACME server for testing with request tracking.
+type TestACMEServer struct {
+	server              *httptest.Server
+	caCert              *x509.Certificate
+	caKey               *rsa.PrivateKey
+	clientCSRs          map[string]*x509.CertificateRequest
+	orderDomains        map[string][]string
+	authzDomains        map[string]string
+	orderSeq            int
+	certRequestCount    map[string]int
+	renewalRequestCount map[string]int
+	mu                  sync.Mutex
+}
+
+func newTestACMEServer(t *testing.T) *TestACMEServer {
+	t.Helper()
+
+	// Generate CA certificate and key
+	caKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	require.NoError(t, err)
+
+	caTemplate := &x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			Organization:  []string{"Test CA"},
+			Country:       []string{"US"},
+			Province:      []string{""},
+			Locality:      []string{"Test"},
+			StreetAddress: []string{""},
+			PostalCode:    []string{""},
+		},
+		IPAddresses:           []net.IP{net.ParseIP("127.0.0.1")},
+		NotBefore:             time.Now(),
+		NotAfter:              time.Now().Add(365 * 24 * time.Hour),
+		IsCA:                  true,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
+		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
+		BasicConstraintsValid: true,
+	}
+
+	caCertDER, err := x509.CreateCertificate(rand.Reader, caTemplate, caTemplate, &caKey.PublicKey, caKey)
+	require.NoError(t, err)
+
+	caCert, err := x509.ParseCertificate(caCertDER)
+	require.NoError(t, err)
+
+	acme := &TestACMEServer{
+		caCert:              caCert,
+		caKey:               caKey,
+		clientCSRs:          make(map[string]*x509.CertificateRequest),
+		orderDomains:        make(map[string][]string),
+		authzDomains:        make(map[string]string),
+		orderSeq:            0,
+		certRequestCount:    make(map[string]int),
+		renewalRequestCount: make(map[string]int),
+	}
+
+	mux := http.NewServeMux()
+	acme.setupRoutes(mux)
+
+	acme.server = httptest.NewUnstartedServer(mux)
+	acme.server.TLS = &tls.Config{
+		Certificates: []tls.Certificate{
+			{
+				Certificate: [][]byte{caCert.Raw},
+				PrivateKey:  caKey,
+			},
+		},
+		MinVersion: tls.VersionTLS12,
+	}
+	acme.server.StartTLS()
+	return acme
+}
+
+func (s *TestACMEServer) Close() {
+	s.server.Close()
+}
+
+func (s *TestACMEServer) URL() string {
+	return s.server.URL
+}
+
+func (s *TestACMEServer) httpClient() *http.Client {
+	certPool := x509.NewCertPool()
+	certPool.AddCert(s.caCert)
+
+	return &http.Client{
+		Transport: &http.Transport{
+			DialContext: (&net.Dialer{
+				Timeout:   30 * time.Second,
+				KeepAlive: 30 * time.Second,
+			}).DialContext,
+			TLSHandshakeTimeout:   30 * time.Second,
+			ResponseHeaderTimeout: 30 * time.Second,
+			TLSClientConfig: &tls.Config{
+				RootCAs:    certPool,
+				MinVersion: tls.VersionTLS12,
+			},
+		},
+	}
+}
+
+func (s *TestACMEServer) setupRoutes(mux *http.ServeMux) {
+	mux.HandleFunc("/acme/acme/directory", s.handleDirectory)
+	mux.HandleFunc("/acme/new-nonce", s.handleNewNonce)
+	mux.HandleFunc("/acme/new-account", s.handleNewAccount)
+	mux.HandleFunc("/acme/new-order", s.handleNewOrder)
+	mux.HandleFunc("/acme/authz/", s.handleAuthorization)
+	mux.HandleFunc("/acme/chall/", s.handleChallenge)
+	mux.HandleFunc("/acme/order/", s.handleOrder)
+	mux.HandleFunc("/acme/cert/", s.handleCertificate)
+}
+
+func (s *TestACMEServer) handleDirectory(w http.ResponseWriter, r *http.Request) {
+	directory := map[string]any{
+		"newNonce":   s.server.URL + "/acme/new-nonce",
+		"newAccount": s.server.URL + "/acme/new-account",
+		"newOrder":   s.server.URL + "/acme/new-order",
+		"keyChange":  s.server.URL + "/acme/key-change",
+		"meta": map[string]any{
+			"termsOfService": s.server.URL + "/terms",
+		},
+	}
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(directory)
+}
+
+func (s *TestACMEServer) handleNewNonce(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Replay-Nonce", "test-nonce-12345")
+	w.WriteHeader(http.StatusOK)
+}
+
+func (s *TestACMEServer) handleNewAccount(w http.ResponseWriter, r *http.Request) {
+	account := map[string]any{
+		"status":  "valid",
+		"contact": []string{"mailto:test@example.com"},
+		"orders":  s.server.URL + "/acme/orders",
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Location", s.server.URL+"/acme/account/1")
+	w.Header().Set("Replay-Nonce", "test-nonce-67890")
+	w.WriteHeader(http.StatusCreated)
+	json.NewEncoder(w).Encode(account)
+}
+
+func (s *TestACMEServer) handleNewOrder(w http.ResponseWriter, r *http.Request) {
+	body, _ := io.ReadAll(r.Body)
+	var jws struct {
+		Payload string `json:"payload"`
+	}
+	json.Unmarshal(body, &jws)
+	payloadBytes, _ := base64.RawURLEncoding.DecodeString(jws.Payload)
+	var orderReq struct {
+		Identifiers []map[string]string `json:"identifiers"`
+	}
+	json.Unmarshal(payloadBytes, &orderReq)
+
+	domains := []string{}
+	for _, id := range orderReq.Identifiers {
+		domains = append(domains, id["value"])
+	}
+	sort.Strings(domains)
+	domainKey := strings.Join(domains, ",")
+
+	s.mu.Lock()
+	s.orderSeq++
+	orderID := fmt.Sprintf("test-order-%d", s.orderSeq)
+	authzID := fmt.Sprintf("test-authz-%d", s.orderSeq)
+	s.orderDomains[orderID] = domains
+	if len(domains) > 0 {
+		s.authzDomains[authzID] = domains[0]
+	}
+	s.certRequestCount[domainKey]++
+	s.mu.Unlock()
+
+	order := map[string]any{
+		"status":         "ready",
+		"expires":        time.Now().Add(24 * time.Hour).Format(time.RFC3339),
+		"identifiers":    orderReq.Identifiers,
+		"authorizations": []string{s.server.URL + "/acme/authz/" + authzID},
+		"finalize":       s.server.URL + "/acme/order/" + orderID + "/finalize",
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Location", s.server.URL+"/acme/order/"+orderID)
+	w.Header().Set("Replay-Nonce", "test-nonce-order")
+	w.WriteHeader(http.StatusCreated)
+	json.NewEncoder(w).Encode(order)
+}
+
+func (s *TestACMEServer) handleAuthorization(w http.ResponseWriter, r *http.Request) {
+	authzID := strings.TrimPrefix(r.URL.Path, "/acme/authz/")
+	domain := s.authzDomains[authzID]
+	if domain == "" {
+		domain = "test.example.com"
+	}
+	authz := map[string]any{
+		"status":     "valid",
+		"expires":    time.Now().Add(24 * time.Hour).Format(time.RFC3339),
+		"identifier": map[string]string{"type": "dns", "value": domain},
+		"challenges": []map[string]any{
+			{
+				"type":   "dns-01",
+				"status": "valid",
+				"url":    s.server.URL + "/acme/chall/test-chall-789",
+				"token":  "test-token-abc123",
+			},
+		},
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Replay-Nonce", "test-nonce-authz")
+	json.NewEncoder(w).Encode(authz)
+}
+
+func (s *TestACMEServer) handleChallenge(w http.ResponseWriter, r *http.Request) {
+	challenge := map[string]any{
+		"type":   "dns-01",
+		"status": "valid",
+		"url":    r.URL.String(),
+		"token":  "test-token-abc123",
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Replay-Nonce", "test-nonce-chall")
+	json.NewEncoder(w).Encode(challenge)
+}
+
+func (s *TestACMEServer) handleOrder(w http.ResponseWriter, r *http.Request) {
+	if strings.HasSuffix(r.URL.Path, "/finalize") {
+		s.handleFinalize(w, r)
+		return
+	}
+
+	orderID := strings.TrimPrefix(r.URL.Path, "/acme/order/")
+	domains := s.orderDomains[orderID]
+	if len(domains) == 0 {
+		domains = []string{"test.example.com"}
+	}
+	certURL := s.server.URL + "/acme/cert/" + orderID
+	order := map[string]any{
+		"status":  "valid",
+		"expires": time.Now().Add(24 * time.Hour).Format(time.RFC3339),
+		"identifiers": func() []map[string]string {
+			out := make([]map[string]string, 0, len(domains))
+			for _, d := range domains {
+				out = append(out, map[string]string{"type": "dns", "value": d})
+			}
+			return out
+		}(),
+		"certificate": certURL,
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Replay-Nonce", "test-nonce-order-get")
+	json.NewEncoder(w).Encode(order)
+}
+
+func (s *TestACMEServer) handleFinalize(w http.ResponseWriter, r *http.Request) {
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, "Failed to read request", http.StatusBadRequest)
+		return
+	}
+
+	csr, err := s.extractCSRFromJWS(body)
+	if err != nil {
+		http.Error(w, "Invalid CSR: "+err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	orderID := strings.TrimSuffix(strings.TrimPrefix(r.URL.Path, "/acme/order/"), "/finalize")
+	s.mu.Lock()
+	s.clientCSRs[orderID] = csr
+
+	// Detect renewal: if we already have a certificate for these domains, it's a renewal
+	domains := csr.DNSNames
+	sort.Strings(domains)
+	domainKey := strings.Join(domains, ",")
+
+	if s.certRequestCount[domainKey] > 1 {
+		s.renewalRequestCount[domainKey]++
+	}
+	s.mu.Unlock()
+
+	certURL := s.server.URL + "/acme/cert/" + orderID
+	order := map[string]any{
+		"status":  "valid",
+		"expires": time.Now().Add(24 * time.Hour).Format(time.RFC3339),
+		"identifiers": func() []map[string]string {
+			out := make([]map[string]string, 0, len(domains))
+			for _, d := range domains {
+				out = append(out, map[string]string{"type": "dns", "value": d})
+			}
+			return out
+		}(),
+		"certificate": certURL,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Location", strings.TrimSuffix(r.URL.String(), "/finalize"))
+	w.Header().Set("Replay-Nonce", "test-nonce-finalize")
+	json.NewEncoder(w).Encode(order)
+}
+
+func (s *TestACMEServer) extractCSRFromJWS(jwsData []byte) (*x509.CertificateRequest, error) {
+	var jws struct {
+		Payload string `json:"payload"`
+	}
+	if err := json.Unmarshal(jwsData, &jws); err != nil {
+		return nil, err
+	}
+	payloadBytes, err := base64.RawURLEncoding.DecodeString(jws.Payload)
+	if err != nil {
+		return nil, err
+	}
+	var finalizeReq struct {
+		CSR string `json:"csr"`
+	}
+	if err := json.Unmarshal(payloadBytes, &finalizeReq); err != nil {
+		return nil, err
+	}
+	csrBytes, err := base64.RawURLEncoding.DecodeString(finalizeReq.CSR)
+	if err != nil {
+		return nil, err
+	}
+	return x509.ParseCertificateRequest(csrBytes)
+}
+
+func (s *TestACMEServer) handleCertificate(w http.ResponseWriter, r *http.Request) {
+	orderID := strings.TrimPrefix(r.URL.Path, "/acme/cert/")
+	csr, exists := s.clientCSRs[orderID]
+	if !exists {
+		http.Error(w, "No CSR found for order", http.StatusBadRequest)
+		return
+	}
+
+	template := &x509.Certificate{
+		SerialNumber: big.NewInt(2),
+		Subject: pkix.Name{
+			Organization: []string{"Test Cert"},
+			Country:      []string{"US"},
+		},
+		DNSNames:              csr.DNSNames,
+		NotBefore:             time.Now(),
+		NotAfter:              time.Now().Add(90 * 24 * time.Hour),
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+	}
+
+	certDER, err := x509.CreateCertificate(rand.Reader, template, s.caCert, csr.PublicKey, s.caKey)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
+	caPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: s.caCert.Raw})
+
+	w.Header().Set("Content-Type", "application/pem-certificate-chain")
+	w.Header().Set("Replay-Nonce", "test-nonce-cert")
+	w.Write(append(certPEM, caPEM...))
+}
+
 func TestMain(m *testing.M) {
 	dnsproviders.InitProviders()
 	m.Run()
@@ -41,7 +406,7 @@ func TestCustomProvider(t *testing.T) {
 			ACMEKeyPath: "certs/custom-acme.key",
 		}
 
-		err := cfg.Validate()
+		err := error(cfg.Validate())
 		require.NoError(t, err)
 
 		user, legoCfg, err := cfg.GetLegoConfig()
@@ -62,7 +427,8 @@ func TestCustomProvider(t *testing.T) {
 
 		err := cfg.Validate()
 		require.Error(t, err)
-		require.Contains(t, err.Error(), "missing field 'ca_dir_url'")
+		require.Contains(t, err.Error(), "missing field")
+		require.Contains(t, err.Error(), "ca_dir_url")
 	})
 
 	t.Run("custom provider with step-ca internal CA", func(t *testing.T) {
@@ -76,7 +442,7 @@ func TestCustomProvider(t *testing.T) {
 			ACMEKeyPath: "certs/internal-acme.key",
 		}
 
-		err := cfg.Validate()
+		err := error(cfg.Validate())
 		require.NoError(t, err)
 
 		user, legoCfg, err := cfg.GetLegoConfig()
@@ -86,9 +452,10 @@ func TestCustomProvider(t *testing.T) {
 		require.Equal(t, "https://step-ca.internal:443/acme/acme/directory", legoCfg.CADirURL)
 		require.Equal(t, "admin@internal.com", user.Email)
 
-		provider := autocert.NewProvider(cfg, user, legoCfg)
+		provider, err := autocert.NewProvider(cfg, user, legoCfg)
+		require.NoError(t, err)
 		require.NotNil(t, provider)
-		require.Equal(t, autocert.ProviderCustom, provider.GetName())
+		require.Equal(t, "main", provider.GetName())
 		require.Equal(t, "certs/internal.crt", provider.GetCertPath())
 		require.Equal(t, "certs/internal.key", provider.GetKeyPath())
 	})
@@ -119,7 +486,8 @@ func TestObtainCertFromCustomProvider(t *testing.T) {
 		require.NotNil(t, user)
 		require.NotNil(t, legoCfg)
 
-		provider := autocert.NewProvider(cfg, user, legoCfg)
+		provider, err := autocert.NewProvider(cfg, user, legoCfg)
+		require.NoError(t, err)
 		require.NotNil(t, provider)
 
 		// Test obtaining certificate
@@ -161,7 +529,8 @@ func TestObtainCertFromCustomProvider(t *testing.T) {
 		require.NotNil(t, user)
 		require.NotNil(t, legoCfg)
 
-		provider := autocert.NewProvider(cfg, user, legoCfg)
+		provider, err := autocert.NewProvider(cfg, user, legoCfg)
+		require.NoError(t, err)
 		require.NotNil(t, provider)
 
 		err = provider.ObtainCert()
@@ -178,330 +547,3 @@ func TestObtainCertFromCustomProvider(t *testing.T) {
 		require.True(t, time.Now().After(x509Cert.NotBefore))
 	})
 }
-
-// testACMEServer implements a minimal ACME server for testing.
-type testACMEServer struct {
-	server     *httptest.Server
-	caCert     *x509.Certificate
-	caKey      *rsa.PrivateKey
-	clientCSRs map[string]*x509.CertificateRequest
-	orderID    string
-}
-
-func newTestACMEServer(t *testing.T) *testACMEServer {
-	t.Helper()
-
-	// Generate CA certificate and key
-	caKey, err := rsa.GenerateKey(rand.Reader, 2048)
-	require.NoError(t, err)
-
-	caTemplate := &x509.Certificate{
-		SerialNumber: big.NewInt(1),
-		Subject: pkix.Name{
-			Organization:  []string{"Test CA"},
-			Country:       []string{"US"},
-			Province:      []string{""},
-			Locality:      []string{"Test"},
-			StreetAddress: []string{""},
-			PostalCode:    []string{""},
-		},
-		IPAddresses:           []net.IP{net.ParseIP("127.0.0.1")},
-		NotBefore:             time.Now(),
-		NotAfter:              time.Now().Add(365 * 24 * time.Hour),
-		IsCA:                  true,
-		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
-		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
-		BasicConstraintsValid: true,
-	}
-
-	caCertDER, err := x509.CreateCertificate(rand.Reader, caTemplate, caTemplate, &caKey.PublicKey, caKey)
-	require.NoError(t, err)
-
-	caCert, err := x509.ParseCertificate(caCertDER)
-	require.NoError(t, err)
-
-	acme := &testACMEServer{
-		caCert:     caCert,
-		caKey:      caKey,
-		clientCSRs: make(map[string]*x509.CertificateRequest),
-		orderID:    "test-order-123",
-	}
-
-	mux := http.NewServeMux()
-	acme.setupRoutes(mux)
-
-	acme.server = httptest.NewUnstartedServer(mux)
-	acme.server.TLS = &tls.Config{
-		Certificates: []tls.Certificate{
-			{
-				Certificate: [][]byte{caCert.Raw},
-				PrivateKey:  caKey,
-			},
-		},
-		MinVersion: tls.VersionTLS12,
-	}
-	acme.server.StartTLS()
-	return acme
-}
-
-func (s *testACMEServer) Close() {
-	s.server.Close()
-}
-
-func (s *testACMEServer) URL() string {
-	return s.server.URL
-}
-
-func (s *testACMEServer) httpClient() *http.Client {
-	certPool := x509.NewCertPool()
-	certPool.AddCert(s.caCert)
-
-	return &http.Client{
-		Transport: &http.Transport{
-			DialContext: (&net.Dialer{
-				Timeout:   30 * time.Second,
-				KeepAlive: 30 * time.Second,
-			}).DialContext,
-			TLSHandshakeTimeout:   30 * time.Second,
-			ResponseHeaderTimeout: 30 * time.Second,
-			TLSClientConfig: &tls.Config{
-				RootCAs:    certPool,
-				MinVersion: tls.VersionTLS12,
-			},
-		},
-	}
-}
-
-func (s *testACMEServer) setupRoutes(mux *http.ServeMux) {
-	// ACME directory endpoint
-	mux.HandleFunc("/acme/acme/directory", s.handleDirectory)
-
-	// ACME endpoints
-	mux.HandleFunc("/acme/new-nonce", s.handleNewNonce)
-	mux.HandleFunc("/acme/new-account", s.handleNewAccount)
-	mux.HandleFunc("/acme/new-order", s.handleNewOrder)
-	mux.HandleFunc("/acme/authz/", s.handleAuthorization)
-	mux.HandleFunc("/acme/chall/", s.handleChallenge)
-	mux.HandleFunc("/acme/order/", s.handleOrder)
-	mux.HandleFunc("/acme/cert/", s.handleCertificate)
-}
-
-func (s *testACMEServer) handleDirectory(w http.ResponseWriter, r *http.Request) {
-	directory := map[string]interface{}{
-		"newNonce":   s.server.URL + "/acme/new-nonce",
-		"newAccount": s.server.URL + "/acme/new-account",
-		"newOrder":   s.server.URL + "/acme/new-order",
-		"keyChange":  s.server.URL + "/acme/key-change",
-		"meta": map[string]interface{}{
-			"termsOfService": s.server.URL + "/terms",
-		},
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(directory)
-}
-
-func (s *testACMEServer) handleNewNonce(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Replay-Nonce", "test-nonce-12345")
-	w.WriteHeader(http.StatusOK)
-}
-
-func (s *testACMEServer) handleNewAccount(w http.ResponseWriter, r *http.Request) {
-	account := map[string]interface{}{
-		"status":  "valid",
-		"contact": []string{"mailto:test@example.com"},
-		"orders":  s.server.URL + "/acme/orders",
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Location", s.server.URL+"/acme/account/1")
-	w.Header().Set("Replay-Nonce", "test-nonce-67890")
-	w.WriteHeader(http.StatusCreated)
-	json.NewEncoder(w).Encode(account)
-}
-
-func (s *testACMEServer) handleNewOrder(w http.ResponseWriter, r *http.Request) {
-	authzID := "test-authz-456"
-
-	order := map[string]interface{}{
-		"status":         "ready", // Skip pending state for simplicity
-		"expires":        time.Now().Add(24 * time.Hour).Format(time.RFC3339),
-		"identifiers":    []map[string]string{{"type": "dns", "value": "test.example.com"}},
-		"authorizations": []string{s.server.URL + "/acme/authz/" + authzID},
-		"finalize":       s.server.URL + "/acme/order/" + s.orderID + "/finalize",
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Location", s.server.URL+"/acme/order/"+s.orderID)
-	w.Header().Set("Replay-Nonce", "test-nonce-order")
-	w.WriteHeader(http.StatusCreated)
-	json.NewEncoder(w).Encode(order)
-}
-
-func (s *testACMEServer) handleAuthorization(w http.ResponseWriter, r *http.Request) {
-	authz := map[string]interface{}{
-		"status":     "valid", // Skip challenge validation for simplicity
-		"expires":    time.Now().Add(24 * time.Hour).Format(time.RFC3339),
-		"identifier": map[string]string{"type": "dns", "value": "test.example.com"},
-		"challenges": []map[string]interface{}{
-			{
-				"type":   "dns-01",
-				"status": "valid",
-				"url":    s.server.URL + "/acme/chall/test-chall-789",
-				"token":  "test-token-abc123",
-			},
-		},
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Replay-Nonce", "test-nonce-authz")
-	json.NewEncoder(w).Encode(authz)
-}
-
-func (s *testACMEServer) handleChallenge(w http.ResponseWriter, r *http.Request) {
-	challenge := map[string]interface{}{
-		"type":   "dns-01",
-		"status": "valid",
-		"url":    r.URL.String(),
-		"token":  "test-token-abc123",
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Replay-Nonce", "test-nonce-chall")
-	json.NewEncoder(w).Encode(challenge)
-}
-
-func (s *testACMEServer) handleOrder(w http.ResponseWriter, r *http.Request) {
-	if strings.HasSuffix(r.URL.Path, "/finalize") {
-		s.handleFinalize(w, r)
-		return
-	}
-
-	certURL := s.server.URL + "/acme/cert/" + s.orderID
-	order := map[string]interface{}{
-		"status":      "valid",
-		"expires":     time.Now().Add(24 * time.Hour).Format(time.RFC3339),
-		"identifiers": []map[string]string{{"type": "dns", "value": "test.example.com"}},
-		"certificate": certURL,
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Replay-Nonce", "test-nonce-order-get")
-	json.NewEncoder(w).Encode(order)
-}
-
-func (s *testACMEServer) handleFinalize(w http.ResponseWriter, r *http.Request) {
-	// Read the JWS payload
-	body, err := io.ReadAll(r.Body)
-	if err != nil {
-		http.Error(w, "Failed to read request", http.StatusBadRequest)
-		return
-	}
-
-	// Extract CSR from JWS payload
-	csr, err := s.extractCSRFromJWS(body)
-	if err != nil {
-		http.Error(w, "Invalid CSR: "+err.Error(), http.StatusBadRequest)
-		return
-	}
-
-	// Store the CSR for certificate generation
-	s.clientCSRs[s.orderID] = csr
-
-	certURL := s.server.URL + "/acme/cert/" + s.orderID
-	order := map[string]interface{}{
-		"status":      "valid",
-		"expires":     time.Now().Add(24 * time.Hour).Format(time.RFC3339),
-		"identifiers": []map[string]string{{"type": "dns", "value": "test.example.com"}},
-		"certificate": certURL,
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Location", strings.TrimSuffix(r.URL.String(), "/finalize"))
-	w.Header().Set("Replay-Nonce", "test-nonce-finalize")
-	json.NewEncoder(w).Encode(order)
-}
-
-func (s *testACMEServer) extractCSRFromJWS(jwsData []byte) (*x509.CertificateRequest, error) {
-	// Parse the JWS structure
-	var jws struct {
-		Protected string `json:"protected"`
-		Payload   string `json:"payload"`
-		Signature string `json:"signature"`
-	}
-
-	if err := json.Unmarshal(jwsData, &jws); err != nil {
-		return nil, err
-	}
-
-	// Decode the payload
-	payloadBytes, err := base64.RawURLEncoding.DecodeString(jws.Payload)
-	if err != nil {
-		return nil, err
-	}
-
-	// Parse the finalize request
-	var finalizeReq struct {
-		CSR string `json:"csr"`
-	}
-
-	if err := json.Unmarshal(payloadBytes, &finalizeReq); err != nil {
-		return nil, err
-	}
-
-	// Decode the CSR
-	csrBytes, err := base64.RawURLEncoding.DecodeString(finalizeReq.CSR)
-	if err != nil {
-		return nil, err
-	}
-
-	// Parse the CSR
-	csr, err := x509.ParseCertificateRequest(csrBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	return csr, nil
-}
-
-func (s *testACMEServer) handleCertificate(w http.ResponseWriter, r *http.Request) {
-	// Extract order ID from URL
-	orderID := strings.TrimPrefix(r.URL.Path, "/acme/cert/")
-
-	// Get the CSR for this order
-	csr, exists := s.clientCSRs[orderID]
-	if !exists {
-		http.Error(w, "No CSR found for order", http.StatusBadRequest)
-		return
-	}
-
-	// Create certificate using the public key from the client's CSR
-	template := &x509.Certificate{
-		SerialNumber: big.NewInt(2),
-		Subject: pkix.Name{
-			Organization: []string{"Test Cert"},
-			Country:      []string{"US"},
-		},
-		DNSNames:              csr.DNSNames,
-		NotBefore:             time.Now(),
-		NotAfter:              time.Now().Add(90 * 24 * time.Hour),
-		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
-		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
-		BasicConstraintsValid: true,
-	}
-
-	// Use the public key from the CSR and sign with CA key
-	certDER, err := x509.CreateCertificate(rand.Reader, template, s.caCert, csr.PublicKey, s.caKey)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	// Return certificate chain
-	certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
-	caPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: s.caCert.Raw})
-
-	w.Header().Set("Content-Type", "application/pem-certificate-chain")
-	w.Header().Set("Replay-Nonce", "test-nonce-cert")
-	w.Write(append(certPEM, caPEM...))
-}

internal/autocert/provider_test/multi_cert_test.go

@@ -0,0 +1,90 @@
+//nolint:errchkjson,errcheck
+package provider_test
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/internal/autocert"
+	"github.com/yusing/godoxy/internal/serialization"
+	"github.com/yusing/goutils/task"
+)
+
+func buildMultiCertYAML(serverURL string) []byte {
+	return fmt.Appendf(nil, `
+email: main@example.com
+domains: [main.example.com]
+provider: custom
+ca_dir_url: %s/acme/acme/directory
+cert_path: certs/main.crt
+key_path: certs/main.key
+extra:
+  - email: extra1@example.com
+    domains: [extra1.example.com]
+    cert_path: certs/extra1.crt
+    key_path: certs/extra1.key
+  - email: extra2@example.com
+    domains: [extra2.example.com]
+    cert_path: certs/extra2.crt
+    key_path: certs/extra2.key
+`, serverURL)
+}
+
+func TestMultipleCertificatesLifecycle(t *testing.T) {
+	acmeServer := newTestACMEServer(t)
+	defer acmeServer.Close()
+
+	yamlConfig := buildMultiCertYAML(acmeServer.URL())
+	var cfg autocert.Config
+	cfg.HTTPClient = acmeServer.httpClient()
+
+	/* unmarshal yaml config with multiple certs */
+	err := error(serialization.UnmarshalValidateYAML(yamlConfig, &cfg))
+	require.NoError(t, err)
+	require.Equal(t, []string{"main.example.com"}, cfg.Domains)
+	require.Len(t, cfg.Extra, 2)
+	require.Equal(t, []string{"extra1.example.com"}, cfg.Extra[0].Domains)
+	require.Equal(t, []string{"extra2.example.com"}, cfg.Extra[1].Domains)
+
+	var provider *autocert.Provider
+
+	/* initialize autocert with multi-cert config */
+	user, legoCfg, gerr := cfg.GetLegoConfig()
+	require.NoError(t, gerr)
+	provider, err = autocert.NewProvider(&cfg, user, legoCfg)
+	require.NoError(t, err)
+	require.NotNil(t, provider)
+
+	// Start renewal scheduler
+	root := task.RootTask("test", false)
+	defer root.Finish(nil)
+	provider.ScheduleRenewalAll(root)
+
+	require.Equal(t, "custom", cfg.Provider)
+	require.Equal(t, "custom", cfg.Extra[0].Provider)
+	require.Equal(t, "custom", cfg.Extra[1].Provider)
+
+	/* track cert requests for all configs */
+	os.MkdirAll("certs", 0755)
+	defer os.RemoveAll("certs")
+
+	err = provider.ObtainCertIfNotExistsAll()
+	require.NoError(t, err)
+
+	require.Equal(t, 1, acmeServer.certRequestCount["main.example.com"])
+	require.Equal(t, 1, acmeServer.certRequestCount["extra1.example.com"])
+	require.Equal(t, 1, acmeServer.certRequestCount["extra2.example.com"])
+
+	/* track renewal scheduling and requests */
+
+	// force renewal for all providers and wait for completion
+	ok := provider.ForceExpiryAll()
+	require.True(t, ok)
+	provider.WaitRenewalDone(t.Context())
+
+	require.Equal(t, 1, acmeServer.renewalRequestCount["main.example.com"])
+	require.Equal(t, 1, acmeServer.renewalRequestCount["extra1.example.com"])
+	require.Equal(t, 1, acmeServer.renewalRequestCount["extra2.example.com"])
+}

internal/autocert/provider_test/sni_test.go

@@ -0,0 +1,416 @@
+package provider_test
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/internal/autocert"
+)
+
+func writeSelfSignedCert(t *testing.T, dir string, dnsNames []string) (string, string) {
+	t.Helper()
+
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	require.NoError(t, err)
+
+	serial, err := rand.Int(rand.Reader, big.NewInt(1<<62))
+	require.NoError(t, err)
+
+	cn := ""
+	if len(dnsNames) > 0 {
+		cn = dnsNames[0]
+	}
+
+	template := &x509.Certificate{
+		SerialNumber: serial,
+		Subject: pkix.Name{
+			CommonName: cn,
+		},
+		NotBefore:             time.Now().Add(-time.Minute),
+		NotAfter:              time.Now().Add(24 * time.Hour),
+		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+		DNSNames:              dnsNames,
+	}
+
+	der, err := x509.CreateCertificate(rand.Reader, template, template, &key.PublicKey, key)
+	require.NoError(t, err)
+
+	certPath := filepath.Join(dir, "cert.pem")
+	keyPath := filepath.Join(dir, "key.pem")
+
+	certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: der})
+	keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)})
+
+	require.NoError(t, os.WriteFile(certPath, certPEM, 0o644))
+	require.NoError(t, os.WriteFile(keyPath, keyPEM, 0o600))
+
+	return certPath, keyPath
+}
+
+func TestGetCertBySNI(t *testing.T) {
+	t.Run("extra cert used when main does not match", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"*.internal.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "a.internal.example.com"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.internal.example.com")
+	})
+
+	t.Run("exact match wins over wildcard match", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"foo.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "foo.example.com"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "foo.example.com")
+	})
+
+	t.Run("main cert fallback when no match", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"*.test.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "unknown.domain.com"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.example.com")
+	})
+
+	t.Run("nil ServerName returns main cert", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(nil)
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.example.com")
+	})
+
+	t.Run("empty ServerName returns main cert", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: ""})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.example.com")
+	})
+
+	t.Run("case insensitive matching", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"Foo.Example.COM"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "FOO.EXAMPLE.COM"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "Foo.Example.COM")
+	})
+
+	t.Run("normalization with trailing dot and whitespace", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"foo.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "  foo.example.com.  "})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "foo.example.com")
+	})
+
+	t.Run("longest wildcard match wins", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir1 := t.TempDir()
+		extraCert1, extraKey1 := writeSelfSignedCert(t, extraDir1, []string{"*.a.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert1, KeyPath: extraKey1},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "foo.a.example.com"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.a.example.com")
+	})
+
+	t.Run("main cert wildcard match", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "bar.example.com"})
+		require.NoError(t, err)
+
+		leaf, err := x509.ParseCertificate(cert.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf.DNSNames, "*.example.com")
+	})
+
+	t.Run("multiple extra certs", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir1 := t.TempDir()
+		extraCert1, extraKey1 := writeSelfSignedCert(t, extraDir1, []string{"*.test.com"})
+
+		extraDir2 := t.TempDir()
+		extraCert2, extraKey2 := writeSelfSignedCert(t, extraDir2, []string{"*.dev.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert1, KeyPath: extraKey1},
+				{CertPath: extraCert2, KeyPath: extraKey2},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert1, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "foo.test.com"})
+		require.NoError(t, err)
+		leaf1, err := x509.ParseCertificate(cert1.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf1.DNSNames, "*.test.com")
+
+		cert2, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "bar.dev.com"})
+		require.NoError(t, err)
+		leaf2, err := x509.ParseCertificate(cert2.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf2.DNSNames, "*.dev.com")
+	})
+
+	t.Run("multiple DNSNames in cert", func(t *testing.T) {
+		mainDir := t.TempDir()
+		mainCert, mainKey := writeSelfSignedCert(t, mainDir, []string{"*.example.com"})
+
+		extraDir := t.TempDir()
+		extraCert, extraKey := writeSelfSignedCert(t, extraDir, []string{"foo.example.com", "bar.example.com", "*.test.com"})
+
+		cfg := &autocert.Config{
+			Provider: autocert.ProviderLocal,
+			CertPath: mainCert,
+			KeyPath:  mainKey,
+			Extra: []autocert.ConfigExtra{
+				{CertPath: extraCert, KeyPath: extraKey},
+			},
+		}
+
+		require.NoError(t, cfg.Validate())
+
+		p, err := autocert.NewProvider(cfg, nil, nil)
+		require.NoError(t, err)
+
+		err = p.LoadCert()
+		require.NoError(t, err)
+
+		cert1, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "foo.example.com"})
+		require.NoError(t, err)
+		leaf1, err := x509.ParseCertificate(cert1.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf1.DNSNames, "foo.example.com")
+
+		cert2, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "bar.example.com"})
+		require.NoError(t, err)
+		leaf2, err := x509.ParseCertificate(cert2.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf2.DNSNames, "bar.example.com")
+
+		cert3, err := p.GetCert(&tls.ClientHelloInfo{ServerName: "baz.test.com"})
+		require.NoError(t, err)
+		leaf3, err := x509.ParseCertificate(cert3.Certificate[0])
+		require.NoError(t, err)
+		require.Contains(t, leaf3.DNSNames, "*.test.com")
+	})
+}

internal/autocert/providers.go

@@ -4,9 +4,10 @@ import (
 	"github.com/go-acme/lego/v4/challenge"
 	"github.com/yusing/godoxy/internal/serialization"
 	gperr "github.com/yusing/goutils/errs"
+	strutils "github.com/yusing/goutils/strings"
 )
 
-type Generator func(map[string]any) (challenge.Provider, gperr.Error)
+type Generator func(map[string]strutils.Redacted) (challenge.Provider, gperr.Error)
 
 var Providers = make(map[string]Generator)
 
@@ -14,10 +15,10 @@ func DNSProvider[CT any, PT challenge.Provider](
 	defaultCfg func() *CT,
 	newProvider func(*CT) (PT, error),
 ) Generator {
-	return func(opt map[string]any) (challenge.Provider, gperr.Error) {
+	return func(opt map[string]strutils.Redacted) (challenge.Provider, gperr.Error) {
 		cfg := defaultCfg()
 		if len(opt) > 0 {
-			err := serialization.MapUnmarshalValidate(opt, &cfg)
+			err := serialization.MapUnmarshalValidate(serialization.ToSerializedObject(opt), &cfg)
 			if err != nil {
 				return nil, err
 			}

internal/autocert/setup.go

@@ -1,28 +1,30 @@
 package autocert
 
 import (
-	"errors"
-	"os"
-
-	"github.com/rs/zerolog/log"
-	strutils "github.com/yusing/goutils/strings"
+	gperr "github.com/yusing/goutils/errs"
 )
 
-func (p *Provider) Setup() (err error) {
-	if err = p.LoadCert(); err != nil {
-		if !errors.Is(err, os.ErrNotExist) { // ignore if cert doesn't exist
-			return err
-		}
-		log.Debug().Msg("obtaining cert due to error loading cert")
-		if err = p.ObtainCert(); err != nil {
-			return err
-		}
+func (p *Provider) setupExtraProviders() gperr.Error {
+	p.sniMatcher = sniMatcher{}
+	if len(p.cfg.Extra) == 0 {
+		return nil
 	}
 
-	for _, expiry := range p.GetExpiries() {
-		log.Info().Msg("certificate expire on " + strutils.FormatTime(expiry))
-		break
-	}
+	p.extraProviders = make([]*Provider, 0, len(p.cfg.Extra))
 
-	return nil
+	errs := gperr.NewBuilder("setup extra providers error")
+	for _, extra := range p.cfg.Extra {
+		user, legoCfg, err := extra.AsConfig().GetLegoConfig()
+		if err != nil {
+			errs.Add(p.fmtError(err))
+			continue
+		}
+		ep, err := NewProvider(extra.AsConfig(), user, legoCfg)
+		if err != nil {
+			errs.Add(p.fmtError(err))
+			continue
+		}
+		p.extraProviders = append(p.extraProviders, ep)
+	}
+	return errs.Error()
 }

internal/autocert/setup_test.go

@@ -0,0 +1,82 @@
+package autocert_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/godoxy/internal/autocert"
+	"github.com/yusing/godoxy/internal/dnsproviders"
+	"github.com/yusing/godoxy/internal/serialization"
+	strutils "github.com/yusing/goutils/strings"
+)
+
+func TestSetupExtraProviders(t *testing.T) {
+	dnsproviders.InitProviders()
+
+	cfgYAML := `
+email: test@example.com
+domains: [example.com]
+provider: custom
+ca_dir_url: https://ca.example.com:9000/acme/acme/directory
+cert_path: certs/test.crt
+key_path: certs/test.key
+options: {key: value}
+resolvers: [8.8.8.8]
+ca_certs: [ca.crt]
+eab_kid: eabKid
+eab_hmac: eabHmac
+extra:
+  - cert_path: certs/extra.crt
+    key_path: certs/extra.key
+  - cert_path: certs/extra2.crt
+    key_path: certs/extra2.key
+    email: override@example.com
+    provider: pseudo
+    domains: [override.com]
+    ca_dir_url: https://ca2.example.com/directory
+    options: {opt2: val2}
+    resolvers: [1.1.1.1]
+    ca_certs: [ca2.crt]
+    eab_kid: eabKid2
+    eab_hmac: eabHmac2
+`
+
+	var cfg autocert.Config
+	err := error(serialization.UnmarshalValidateYAML([]byte(cfgYAML), &cfg))
+	require.NoError(t, err)
+
+	// Test: extra[0] inherits all fields from main except CertPath and KeyPath.
+	merged0 := cfg.Extra[0]
+	require.Equal(t, "certs/extra.crt", merged0.CertPath)
+	require.Equal(t, "certs/extra.key", merged0.KeyPath)
+	// Inherited fields from main config:
+	require.Equal(t, "test@example.com", merged0.Email)                                   // inherited
+	require.Equal(t, "custom", merged0.Provider)                                          // inherited
+	require.Equal(t, []string{"example.com"}, merged0.Domains)                            // inherited
+	require.Equal(t, "https://ca.example.com:9000/acme/acme/directory", merged0.CADirURL) // inherited
+	require.Equal(t, map[string]strutils.Redacted{"key": "value"}, merged0.Options)       // inherited
+	require.Equal(t, []string{"8.8.8.8"}, merged0.Resolvers)                              // inherited
+	require.Equal(t, []string{"ca.crt"}, merged0.CACerts)                                 // inherited
+	require.Equal(t, "eabKid", merged0.EABKid)                                            // inherited
+	require.Equal(t, "eabHmac", merged0.EABHmac)                                          // inherited
+	require.Equal(t, cfg.HTTPClient, merged0.HTTPClient)                                  // inherited
+	require.Nil(t, merged0.Extra)
+
+	// Test: extra[1] overrides some fields, and inherits others.
+	merged1 := cfg.Extra[1]
+	require.Equal(t, "certs/extra2.crt", merged1.CertPath)
+	require.Equal(t, "certs/extra2.key", merged1.KeyPath)
+	// Overridden fields:
+	require.Equal(t, "override@example.com", merged1.Email)                         // overridden
+	require.Equal(t, "pseudo", merged1.Provider)                                    // overridden
+	require.Equal(t, []string{"override.com"}, merged1.Domains)                     // overridden
+	require.Equal(t, "https://ca2.example.com/directory", merged1.CADirURL)         // overridden
+	require.Equal(t, map[string]strutils.Redacted{"opt2": "val2"}, merged1.Options) // overridden
+	require.Equal(t, []string{"1.1.1.1"}, merged1.Resolvers)                        // overridden
+	require.Equal(t, []string{"ca2.crt"}, merged1.CACerts)                          // overridden
+	require.Equal(t, "eabKid2", merged1.EABKid)                                     // overridden
+	require.Equal(t, "eabHmac2", merged1.EABHmac)                                   // overridden
+	// Inherited field:
+	require.Equal(t, cfg.HTTPClient, merged1.HTTPClient) // inherited
+	require.Nil(t, merged1.Extra)
+}

internal/autocert/sni_matcher.go

@@ -0,0 +1,129 @@
+package autocert
+
+import (
+	"crypto/x509"
+	"strings"
+)
+
+type sniMatcher struct {
+	exact map[string]*Provider
+	root  sniTreeNode
+}
+
+type sniTreeNode struct {
+	children map[string]*sniTreeNode
+	wildcard *Provider
+}
+
+func (m *sniMatcher) match(serverName string) *Provider {
+	if m == nil {
+		return nil
+	}
+	serverName = normalizeServerName(serverName)
+	if serverName == "" {
+		return nil
+	}
+	if m.exact != nil {
+		if p, ok := m.exact[serverName]; ok {
+			return p
+		}
+	}
+	return m.matchSuffixTree(serverName)
+}
+
+func (m *sniMatcher) matchSuffixTree(serverName string) *Provider {
+	n := &m.root
+	labels := strings.Split(serverName, ".")
+
+	var best *Provider
+	for i := len(labels) - 1; i >= 0; i-- {
+		if n.children == nil {
+			break
+		}
+		next := n.children[labels[i]]
+		if next == nil {
+			break
+		}
+		n = next
+
+		consumed := len(labels) - i
+		remaining := len(labels) - consumed
+		if remaining == 1 && n.wildcard != nil {
+			best = n.wildcard
+		}
+	}
+	return best
+}
+
+func normalizeServerName(s string) string {
+	s = strings.TrimSpace(s)
+	s = strings.TrimSuffix(s, ".")
+	return strings.ToLower(s)
+}
+
+func (m *sniMatcher) addProvider(p *Provider) {
+	if p == nil || p.tlsCert == nil || len(p.tlsCert.Certificate) == 0 {
+		return
+	}
+	leaf, err := x509.ParseCertificate(p.tlsCert.Certificate[0])
+	if err != nil {
+		return
+	}
+
+	addName := func(name string) {
+		name = normalizeServerName(name)
+		if name == "" {
+			return
+		}
+		if after, ok := strings.CutPrefix(name, "*."); ok {
+			suffix := after
+			if suffix == "" {
+				return
+			}
+			m.insertWildcardSuffix(suffix, p)
+			return
+		}
+		m.insertExact(name, p)
+	}
+
+	if leaf.Subject.CommonName != "" {
+		addName(leaf.Subject.CommonName)
+	}
+	for _, n := range leaf.DNSNames {
+		addName(n)
+	}
+}
+
+func (m *sniMatcher) insertExact(name string, p *Provider) {
+	if name == "" || p == nil {
+		return
+	}
+	if m.exact == nil {
+		m.exact = make(map[string]*Provider)
+	}
+	if _, exists := m.exact[name]; !exists {
+		m.exact[name] = p
+	}
+}
+
+func (m *sniMatcher) insertWildcardSuffix(suffix string, p *Provider) {
+	if suffix == "" || p == nil {
+		return
+	}
+	n := &m.root
+	labels := strings.Split(suffix, ".")
+	for i := len(labels) - 1; i >= 0; i-- {
+		if n.children == nil {
+			n.children = make(map[string]*sniTreeNode)
+		}
+		next := n.children[labels[i]]
+		if next == nil {
+			next = &sniTreeNode{}
+			n.children[labels[i]] = next
+		}
+		n = next
+	}
+	if n.wildcard == nil {
+		n.wildcard = p
+	}
+}

internal/autocert/sni_matcher_bench_test.go

@@ -0,0 +1,104 @@
+package autocert
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"math/big"
+	"testing"
+	"time"
+)
+
+func createTLSCert(dnsNames []string) (*tls.Certificate, error) {
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return nil, err
+	}
+
+	serial, err := rand.Int(rand.Reader, big.NewInt(1<<62))
+	if err != nil {
+		return nil, err
+	}
+
+	cn := ""
+	if len(dnsNames) > 0 {
+		cn = dnsNames[0]
+	}
+
+	template := &x509.Certificate{
+		SerialNumber: serial,
+		Subject: pkix.Name{
+			CommonName: cn,
+		},
+		NotBefore:             time.Now().Add(-time.Minute),
+		NotAfter:              time.Now().Add(24 * time.Hour),
+		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+		DNSNames:              dnsNames,
+	}
+
+	der, err := x509.CreateCertificate(rand.Reader, template, template, &key.PublicKey, key)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tls.Certificate{
+		Certificate: [][]byte{der},
+		PrivateKey:  key,
+	}, nil
+}
+
+func BenchmarkSNIMatcher(b *testing.B) {
+	matcher := sniMatcher{}
+
+	wildcard1Cert, err := createTLSCert([]string{"*.example.com"})
+	if err != nil {
+		b.Fatal(err)
+	}
+	wildcard1 := &Provider{tlsCert: wildcard1Cert}
+
+	wildcard2Cert, err := createTLSCert([]string{"*.test.com"})
+	if err != nil {
+		b.Fatal(err)
+	}
+	wildcard2 := &Provider{tlsCert: wildcard2Cert}
+
+	wildcard3Cert, err := createTLSCert([]string{"*.foo.com"})
+	if err != nil {
+		b.Fatal(err)
+	}
+	wildcard3 := &Provider{tlsCert: wildcard3Cert}
+
+	exact1Cert, err := createTLSCert([]string{"bar.example.com"})
+	if err != nil {
+		b.Fatal(err)
+	}
+	exact1 := &Provider{tlsCert: exact1Cert}
+
+	exact2Cert, err := createTLSCert([]string{"baz.test.com"})
+	if err != nil {
+		b.Fatal(err)
+	}
+	exact2 := &Provider{tlsCert: exact2Cert}
+
+	matcher.addProvider(wildcard1)
+	matcher.addProvider(wildcard2)
+	matcher.addProvider(wildcard3)
+	matcher.addProvider(exact1)
+	matcher.addProvider(exact2)
+
+	b.Run("MatchWildcard", func(b *testing.B) {
+		for b.Loop() {
+			_ = matcher.match("sub.example.com")
+		}
+	})
+
+	b.Run("MatchExact", func(b *testing.B) {
+		for b.Loop() {
+			_ = matcher.match("bar.example.com")
+		}
+	})
+}

internal/autocert/types/provider.go

@@ -9,6 +9,6 @@ import (
 type Provider interface {
 	Setup() error
 	GetCert(*tls.ClientHelloInfo) (*tls.Certificate, error)
-	ScheduleRenewal(task.Parent)
-	ObtainCert() error
+	ScheduleRenewalAll(task.Parent)
+	ObtainCertAll() error
 }

internal/common/env.go

@@ -13,6 +13,8 @@ var (
 	IsDebug = env.GetEnvBool("DEBUG", IsTest)
 	IsTrace = env.GetEnvBool("TRACE", false) && IsDebug
 
+	ShortLinkPrefix = env.GetEnvString("SHORTLINK_PREFIX", "go")
+
 	ProxyHTTPAddr,
 	ProxyHTTPHost,
 	ProxyHTTPPort,
@@ -39,12 +41,14 @@ var (
 	DebugDisableAuth = env.GetEnvBool("DEBUG_DISABLE_AUTH", false)
 
 	// OIDC Configuration.
-	OIDCIssuerURL     = env.GetEnvString("OIDC_ISSUER_URL", "")
-	OIDCClientID      = env.GetEnvString("OIDC_CLIENT_ID", "")
-	OIDCClientSecret  = env.GetEnvString("OIDC_CLIENT_SECRET", "")
-	OIDCScopes        = env.GetEnvCommaSep("OIDC_SCOPES", "openid, profile, email, groups")
-	OIDCAllowedUsers  = env.GetEnvCommaSep("OIDC_ALLOWED_USERS", "")
-	OIDCAllowedGroups = env.GetEnvCommaSep("OIDC_ALLOWED_GROUPS", "")
+	OIDCIssuerURL       = env.GetEnvString("OIDC_ISSUER_URL", "")
+	OIDCClientID        = env.GetEnvString("OIDC_CLIENT_ID", "")
+	OIDCClientSecret    = env.GetEnvString("OIDC_CLIENT_SECRET", "")
+	OIDCScopes          = env.GetEnvCommaSep("OIDC_SCOPES", "openid, profile, email, groups")
+	OIDCAllowedUsers    = env.GetEnvCommaSep("OIDC_ALLOWED_USERS", "")
+	OIDCAllowedGroups   = env.GetEnvCommaSep("OIDC_ALLOWED_GROUPS", "")
+	OIDCRateLimit       = env.GetEnvInt("OIDC_RATE_LIMIT", 10)
+	OIDCRateLimitPeriod = env.GetEnvDuation("OIDC_RATE_LIMIT_PERIOD", time.Second)
 
 	// metrics configuration
 	MetricsDisableCPU     = env.GetEnvBool("METRICS_DISABLE_CPU", false)

internal/config/README.md

@@ -0,0 +1,316 @@
+# Configuration Management
+
+Centralized YAML configuration management with thread-safe state access and provider initialization.
+
+## Overview
+
+The config package implements the core configuration management system for GoDoxy, handling YAML configuration loading, provider initialization, route loading, and state transitions. It uses atomic pointers for thread-safe state access and integrates all configuration components.
+
+### Primary consumers
+
+- `cmd/main.go` - Initializes configuration state on startup
+- `internal/route/provider` - Accesses configuration for route creation
+- `internal/api/v1` - Exposes configuration via REST API
+- All packages that need to access active configuration
+
+### Non-goals
+
+- Dynamic provider registration after initialization (require config reload)
+
+### Stability
+
+Stable internal package. Public API consists of `State` interface and state management functions.
+
+## Public API
+
+### Exported types
+
+```go
+type Config struct {
+    ACL             *acl.Config
+    AutoCert        *autocert.Config
+    Entrypoint      entrypoint.Config
+    Providers       Providers
+    MatchDomains    []string
+    Homepage        homepage.Config
+    Defaults        Defaults
+    TimeoutShutdown int
+}
+
+type Providers struct {
+    Files        []string
+    Docker       map[string]types.DockerProviderConfig
+    Agents       []*agent.AgentConfig
+    Notification []*notif.NotificationConfig
+    Proxmox      []proxmox.Config
+    MaxMind      *maxmind.Config
+}
+```
+
+### State interface
+
+```go
+type State interface {
+    Task() *task.Task
+    Context() context.Context
+    Value() *Config
+    EntrypointHandler() http.Handler
+    ShortLinkMatcher() config.ShortLinkMatcher
+    AutoCertProvider() server.CertProvider
+    LoadOrStoreProvider(key string, value types.RouteProvider) (actual types.RouteProvider, loaded bool)
+    DeleteProvider(key string)
+    IterProviders() iter.Seq2[string, types.RouteProvider]
+    StartProviders() error
+    NumProviders() int
+}
+```
+
+### Exported functions
+
+```go
+func NewState() config.State
+```
+
+Creates a new configuration state with empty providers map.
+
+```go
+func GetState() config.State
+```
+
+Returns the active configuration state. Thread-safe via atomic load.
+
+```go
+func SetState(state config.State)
+```
+
+Sets the active configuration state. Also updates active configs for ACL, entrypoint, homepage, and autocert.
+
+```go
+func HasState() bool
+```
+
+Returns true if a state is currently active.
+
+```go
+func Value() *config.Config
+```
+
+Returns the current configuration values.
+
+```go
+func (state *state) InitFromFile(filename string) error
+```
+
+Initializes state from a YAML file. Uses default config if file doesn't exist.
+
+```go
+func (state *state) Init(data []byte) error
+```
+
+Initializes state from raw YAML data. Validates, then initializes MaxMind, Proxmox, providers, AutoCert, notifications, access logger, and entrypoint.
+
+```go
+func (state *state) StartProviders() error
+```
+
+Starts all route providers concurrently.
+
+```go
+func (state *state) IterProviders() iter.Seq2[string, types.RouteProvider]
+```
+
+Returns an iterator over all providers.
+
+## Architecture
+
+### Core components
+
+```mermaid
+graph TD
+    A[config.yml] --> B[State]
+    B --> C{Initialize}
+    C --> D[Validate YAML]
+    C --> E[Init MaxMind]
+    C --> F[Init Proxmox]
+    C --> G[Load Route Providers]
+    C --> H[Init AutoCert]
+    C --> I[Init Notifications]
+    C --> J[Init Entrypoint]
+
+    K[ActiveConfig] -.-> B
+
+    subgraph Providers
+        G --> L[Docker Provider]
+        G --> M[File Provider]
+        G --> N[Agent Provider]
+    end
+
+    subgraph State Management
+        B --> O[xsync.Map Providers]
+        B --> P[Entrypoint]
+        B --> Q[AutoCert Provider]
+        B --> R[task.Task]
+    end
+```
+
+### Initialization pipeline
+
+```mermaid
+sequenceDiagram
+    participant YAML
+    participant State
+    participant MaxMind
+    participant Proxmox
+    participant Providers
+    participant AutoCert
+    participant Notif
+    participant Entrypoint
+
+    YAML->>State: Parse & Validate
+    par Initialize in parallel
+        State->>MaxMind: Initialize
+        State->>Proxmox: Initialize
+    and
+        State->>Providers: Load Route Providers
+        Providers->>State: Store Providers
+    end
+    State->>AutoCert: Initialize
+    State->>Notif: Initialize
+    State->>Entrypoint: Configure
+    State->>State: Start Providers
+```
+
+### Thread safety model
+
+```go
+var stateMu sync.RWMutex
+
+func GetState() config.State {
+    return config.ActiveState.Load()
+}
+
+func SetState(state config.State) {
+    stateMu.Lock()
+    defer stateMu.Unlock()
+    config.ActiveState.Store(state)
+}
+```
+
+Uses `sync.RWMutex` for write synchronization and `sync/atomic` for read operations.
+
+## Configuration Surface
+
+### Config sources
+
+Configuration is loaded from `config/config.yml`.
+
+### Hot-reloading
+
+Configuration supports hot-reloading via editing `config/config.yml`.
+
+## Dependency and Integration Map
+
+### Internal dependencies
+
+- `internal/acl` - Access control configuration
+- `internal/autocert` - SSL certificate management
+- `internal/entrypoint` - HTTP entrypoint setup
+- `internal/route/provider` - Route providers (Docker, file, agent)
+- `internal/maxmind` - GeoIP configuration
+- `internal/notif` - Notification providers
+- `internal/proxmox` - LXC container management
+- `internal/homepage/types` - Dashboard configuration
+- `github.com/yusing/goutils/task` - Object lifecycle management
+
+### External dependencies
+
+- `github.com/goccy/go-yaml` - YAML parsing
+- `github.com/puzpuzpuz/xsync/v4` - Concurrent map
+
+### Integration points
+
+```go
+// API uses config/query to access state
+providers := statequery.RouteProviderList()
+
+// Route providers access config state
+for _, p := range config.GetState().IterProviders() {
+    // Process provider
+}
+```
+
+## Observability
+
+### Logs
+
+- Configuration parsing and validation errors
+- Provider initialization results
+- Route loading summary
+- Full configuration dump (at debug level)
+
+### Metrics
+
+No metrics are currently exposed.
+
+## Security Considerations
+
+- Configuration file permissions should be restricted (contains secrets)
+- TLS certificates are loaded from files specified in config
+- Agent credentials are passed via configuration
+- No secrets are logged (except in debug mode with full config dump)
+
+## Failure Modes and Recovery
+
+| Failure                       | Behavior                            | Recovery                   |
+| ----------------------------- | ----------------------------------- | -------------------------- |
+| Invalid YAML                  | Init returns error                  | Fix YAML syntax            |
+| Missing required fields       | Validation fails                    | Add required fields        |
+| Provider initialization fails | Error aggregated and returned       | Fix provider configuration |
+| Duplicate provider key        | Error logged, first provider kept   | Rename provider            |
+| Route loading fails           | Error aggregated, other routes load | Fix route configuration    |
+
+## Performance Characteristics
+
+- Providers are loaded concurrently
+- Routes are loaded concurrently per provider
+- State access is lock-free for reads
+- Atomic pointer for state swap
+
+## Usage Examples
+
+### Loading configuration
+
+```go
+state := config.NewState()
+err := state.InitFromFile("config.yml")
+if err != nil {
+    log.Fatal(err)
+}
+
+config.SetState(state)
+```
+
+### Accessing configuration
+
+```go
+if config.HasState() {
+    cfg := config.Value()
+    log.Printf("Entrypoint middleware count: %d", len(cfg.Entrypoint.Middlewares))
+    log.Printf("Docker providers: %d", len(cfg.Providers.Docker))
+}
+```
+
+### Iterating providers
+
+```go
+for name, provider := range config.GetState().IterProviders() {
+    log.Printf("Provider: %s, Routes: %d", name, provider.NumRoutes())
+}
+```
+
+### Accessing entrypoint handler
+
+```go
+state := config.GetState()
+http.Handle("/", state.EntrypointHandler())
+```