fix(swagger): correct type names in swagger docs

Rename icon-related types in swagger docs:
- homepage.FetchResult → iconfetch.Result
- homepage.IconMetaSearch → iconlist.IconMetaSearch
- homepage.IconSource → icons.Source
- Shorten enum varnames (IconSourceAbsolute → SourceAbsolute, etc.)
- Add x-nullable: true to rules arrays

.env.example

@@ -63,9 +63,6 @@ GODOXY_METRICS_DISABLE_DISK=false
 GODOXY_METRICS_DISABLE_NETWORK=false
 GODOXY_METRICS_DISABLE_SENSORS=false
 
-# Frontend listening port
-GODOXY_FRONTEND_PORT=3000
-
 # Frontend aliases (subdomains / FQDNs, e.g. godoxy, godoxy.domain.com)
 GODOXY_FRONTEND_ALIASES=godoxy
 

.github/workflows/agent-binary.yml

@@ -25,6 +25,8 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: 'recursive'
       - uses: actions/setup-go@v5
         with:
           go-version-file: go.mod

.github/workflows/docker-image-prod.yml

@@ -10,7 +10,6 @@ jobs:
     uses: ./.github/workflows/docker-image.yml
     with:
       image_name: ${{ github.repository_owner }}/godoxy
-      old_image_name: ${{ github.repository_owner }}/go-proxy
       tag: latest
       target: main
   build-prod-agent:

.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/docker-image.yml

@@ -9,9 +9,6 @@ on:
       image_name:
         required: true
         type: string
-      old_image_name:
-        required: false
-        type: string
       target:
         required: true
         type: string
@@ -156,17 +153,6 @@ jobs:
           docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
             $(printf '${{ env.REGISTRY }}/${{ inputs.image_name }}@sha256:%s ' *)
 
-      - name: Old image name
-        if: inputs.old_image_name != ''
-        run: |
-          docker buildx imagetools create -t ${{ env.REGISTRY }}/${{ inputs.old_image_name }}:${{ steps.meta.outputs.version }}\
-            ${{ env.REGISTRY }}/${{ inputs.image_name }}:${{ steps.meta.outputs.version }}
-
       - name: Inspect image
         run: |
           docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ inputs.image_name }}:${{ steps.meta.outputs.version }}
-
-      - name: Inspect image (old)
-        if: inputs.old_image_name != ''
-        run: |
-          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ inputs.old_image_name }}:${{ steps.meta.outputs.version }}

.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/

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "internal/gopsutil"]
+	path = internal/gopsutil
+	url = https://github.com/godoxy-app/gopsutil.git
+[submodule "internal/go-oidc"]
+	path = internal/go-oidc
+	url = https://github.com/godoxy-app/go-oidc.git
+[submodule "goutils"]
+	path = goutils
+	url = https://github.com/yusing/goutils.git

.golangci.yml

@@ -70,7 +70,6 @@ linters:
     govet:
       disable:
         - shadow
-        - fieldalignment
       enable-all: true
     misspell:
       locale: US
@@ -108,8 +107,7 @@ linters:
         - all
         - -SA1019
       dot-import-whitelist:
-        - github.com/yusing/go-proxy/internal/utils/testing
-        - github.com/yusing/go-proxy/internal/api/v1/utils
+        - github.com/yusing/godoxy/internal/utils/testing
     tagalign:
       align: false
       sort: true

.trunk/trunk.yaml

@@ -21,9 +21,9 @@ lint:
     - markdownlint
     - yamllint
   enabled:
-    - checkov@3.2.467
-    - golangci-lint2@2.4.0
-    - hadolint@2.12.1-beta
+    - checkov@3.2.471
+    - golangci-lint2@2.5.0
+    - hadolint@2.14.0
     - actionlint@1.7.7
     - git-diff-check
     - gofmt@1.20.4
@@ -32,7 +32,7 @@ lint:
     - prettier@3.6.2
     - shellcheck@0.11.0
     - shfmt@3.6.0
-    - trufflehog@3.90.5
+    - trufflehog@3.90.8
 actions:
   disabled:
     - trunk-announce

.vscode/settings.example.json

@@ -1,10 +1,10 @@
 {
   "yaml.schemas": {
-    "https://github.com/yusing/godoxy-webui/raw/refs/heads/main/src/types/godoxy/config.schema.json": [
+    "https://github.com/yusing/godoxy-webui/raw/refs/heads/main/types/godoxy/config.schema.json": [
       "config.example.yml",
       "config.yml"
     ],
-    "https://github.com/yusing/godoxy-webui/raw/refs/heads/main/src/types/godoxy/routes.schema.json": [
+    "https://github.com/yusing/godoxy-webui/raw/refs/heads/main/types/godoxy/routes.schema.json": [
       "providers.example.yml"
     ]
   }

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: deps
-FROM golang:1.25.1-alpine AS deps
+FROM golang:1.25.5-alpine AS deps
 HEALTHCHECK NONE
 
 # package version does not matter
@@ -7,13 +7,20 @@ HEALTHCHECK NONE
 RUN apk add --no-cache tzdata make libcap-setcap
 
 ENV GOPATH=/root/go
+ENV GOCACHE=/root/.cache/go-build
 
 WORKDIR /src
 
+COPY goutils/go.mod goutils/go.sum ./goutils/
+COPY internal/go-oidc/go.mod internal/go-oidc/go.sum ./internal/go-oidc/
+COPY internal/gopsutil/go.mod internal/gopsutil/go.sum ./internal/gopsutil/
 COPY go.mod go.sum ./
 
 # remove godoxy stuff from go.mod first
-RUN sed -i '/^module github\.com\/yusing\/go-proxy/!{/github\.com\/yusing\/go-proxy/d}' go.mod && \
+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 && \
+  sed -i '/^module github\.com\/yusing\/goutils/!{/github\.com\/yusing\/goutils/d}' go.mod && \
   go mod download -x
 
 # Stage 2: builder
@@ -28,6 +35,7 @@ COPY internal ./internal
 COPY pkg ./pkg
 COPY agent ./agent
 COPY socket-proxy ./socket-proxy
+COPY goutils ./goutils
 
 ARG VERSION
 ENV VERSION=${VERSION}
@@ -35,9 +43,6 @@ ENV VERSION=${VERSION}
 ARG MAKE_ARGS
 ENV MAKE_ARGS=${MAKE_ARGS}
 
-ENV GOCACHE=/root/.cache/go-build
-ENV GOPATH=/root/go
-
 RUN --mount=type=cache,target=/root/.cache/go-build \
   --mount=type=cache,target=/root/go/pkg/mod \
   make ${MAKE_ARGS} docker=1 build

Jenkinsfile

@@ -0,0 +1,11 @@
+node {
+  stage('SCM') {
+    checkout scm
+  }
+  stage('SonarQube Analysis') {
+    def scannerHome = tool 'SonarScanner';
+    withSonarQubeEnv() {
+      sh "${scannerHome}/bin/sonar-scanner"
+    }
+  }
+}

Makefile

@@ -3,10 +3,13 @@ export VERSION ?= $(shell git describe --tags --abbrev=0)
 export BUILD_DATE ?= $(shell date -u +'%Y%m%d-%H%M')
 export GOOS = linux
 
-WEBUI_DIR ?= ../godoxy-frontend
-DOCS_DIR ?= ../godoxy-wiki
+REPO_URL ?= https://github.com/yusing/godoxy
 
-LDFLAGS = -X github.com/yusing/go-proxy/pkg.version=${VERSION} -checklinkname=0
+WEBUI_DIR ?= ../godoxy-webui
+DOCS_DIR ?= ${WEBUI_DIR}/wiki
+
+GO_TAGS = sonic
+LDFLAGS = -X github.com/yusing/goutils/version.version=${VERSION} -checklinkname=0
 
 ifeq ($(agent), 1)
 	NAME = godoxy-agent
@@ -26,26 +29,28 @@ ifeq ($(trace), 1)
 endif
 
 ifeq ($(race), 1)
-	debug = 1
-  BUILD_FLAGS += -race
-endif
-
-ifeq ($(debug), 1)
 	CGO_ENABLED = 1
 	GODOXY_DEBUG = 1
-	BUILD_FLAGS += -gcflags=all='-N -l' -tags debug -asan
-else ifeq ($(pprof), 1)
+	GO_TAGS += debug
+	BUILD_FLAGS += -race
+else ifeq ($(debug), 1)
 	CGO_ENABLED = 1
+	GODOXY_DEBUG = 1
+	GO_TAGS += debug
+	# 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
-	BUILD_FLAGS += -tags pprof
+	GO_TAGS += pprof
 	VERSION := ${VERSION}-pprof
 else
 	CGO_ENABLED = 0
 	LDFLAGS += -s -w
-	BUILD_FLAGS += -pgo=auto -tags production
+	GO_TAGS += production
+	BUILD_FLAGS += -pgo=auto
 endif
 
-BUILD_FLAGS += -ldflags='$(LDFLAGS)'
+BUILD_FLAGS += -tags '$(GO_TAGS)' -ldflags='$(LDFLAGS)'
 BIN_PATH := $(shell pwd)/bin/${NAME}
 
 export NAME
@@ -72,11 +77,12 @@ endif
 .PHONY: debug
 
 test:
-	GODOXY_TEST=1 go test ./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)
@@ -107,20 +113,29 @@ 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:
 	cd ${PWD} && [ -f .env ] && godotenv -f .env go run ${BUILD_FLAGS} ./cmd
 
 dev:
-	docker compose -f dev.compose.yml up -t 0 -d
+	docker compose -f dev.compose.yml $(args)
 
 dev-build: build
-	docker compose -f dev.compose.yml up -t 0 -d --build
+	docker compose -f dev.compose.yml up -t 0 -d app --force-recreate
 
-dev-logs:
-	docker compose -f dev.compose.yml logs -f	app
+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}
 
 mtrace:
 	 ${BIN_PATH} debug-ls-mtrace > mtrace.json
@@ -138,21 +153,28 @@ 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:
-	swag init --parseDependency --parseInternal -g handler.go -d internal/api -o internal/api/v1/docs
+  # 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
 	rm internal/api/v1/docs/docs.go
 
 gen-swagger-markdown: gen-swagger
+  # brew tap go-swagger/go-swagger && brew install go-swagger
 	swagger generate markdown -f internal/api/v1/docs/swagger.yaml --skip-validation --output ${DOCS_DIR}/src/API.md
 
 gen-api-types: gen-swagger
 	# --disable-throw-on-error
-	pnpx 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 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 ${WEBUI_DIR}/lib/api.ts
+
+.PHONY: update-wiki
+update-wiki:
+	DOCS_DIR=${DOCS_DIR} REPO_URL=${REPO_URL} bun --bun scripts/update-wiki/main.ts

README.md

@@ -33,6 +33,7 @@ Have questions? Ask [ChatGPT](https://chatgpt.com/g/g-6825390374b481919ad482f2e4
 - [Prerequisites](#prerequisites)
 - [Setup](#setup)
 - [How does GoDoxy work](#how-does-godoxy-work)
+- [Update / Uninstall system agent](#update--uninstall-system-agent)
 - [Screenshots](#screenshots)
   - [idlesleeper](#idlesleeper)
   - [Metrics and Logs](#metrics-and-logs)
@@ -58,6 +59,7 @@ Have questions? Ask [ChatGPT](https://chatgpt.com/g/g-6825390374b481919ad482f2e4
   - Country **(Maxmind account required)**
   - Timezone **(Maxmind account required)**
   - **Access logging**
+  - Periodic notification of access summaries for number of allowed and blocked connections
 - **Advanced Automation**
   - Automatic SSL certificate management with Let's Encrypt ([using DNS-01 Challenge](https://docs.godoxy.dev/DNS-01-Providers))
   - Auto-configuration for Docker containers
@@ -128,6 +130,20 @@ Configure Wildcard DNS Record(s) to point to machine running `GoDoxy`, e.g.
 >
 > For example, with the label `proxy.aliases: qbt` you can access your app via `qbt.domain.com`.
 
+## Update / Uninstall system agent
+
+Update:
+
+```bash
+bash -c "$(curl -fsSL https://github.com/yusing/godoxy/raw/refs/heads/main/scripts/install-agent.sh)" -- update
+```
+
+Uninstall:
+
+```bash
+bash -c "$(curl -fsSL https://github.com/yusing/godoxy/raw/refs/heads/main/scripts/install-agent.sh)" -- uninstall
+```
+
 ## Screenshots
 
 ### idlesleeper

README_CHT.md

@@ -34,6 +34,7 @@
 - [安裝](#安裝)
   - [手動安裝](#手動安裝)
   - [資料夾結構](#資料夾結構)
+- [更新 / 卸載系統代理 (System Agent)](#更新--卸載系統代理-system-agent)
 - [截圖](#截圖)
   - [閒置休眠](#閒置休眠)
   - [監控](#監控)
@@ -57,6 +58,7 @@
   - 國家 **(需要 Maxmind 帳戶)**
   - 時區 **(需要 Maxmind 帳戶)**
   - **存取日誌記錄**
+  - 定時發送摘要 (允許和拒絕的連線次數)
 - **自動化**
   - 使用 Let's Encrypt 自動管理 SSL 憑證 ([使用 DNS-01 驗證](https://docs.godoxy.dev/DNS-01-Providers))
   - Docker 容器自動配置
@@ -144,6 +146,20 @@
 └── .env
 ```
 
+## 更新 / 卸載系統代理 (System Agent)
+
+更新：
+
+```bash
+sudo /bin/bash -c "$(curl -fsSL https://github.com/yusing/godoxy/raw/refs/heads/main/scripts/install-agent.sh)" -- update
+```
+
+卸載：
+
+```bash
+sudo /bin/bash -c "$(curl -fsSL https://github.com/yusing/godoxy/raw/refs/heads/main/scripts/install-agent.sh)" -- uninstall
+```
+
 ## 截圖
 
 ### 閒置休眠

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

@@ -1,22 +1,32 @@
 package main
 
 import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"net"
+	"net/http"
 	"os"
 
+	stdlog "log"
+
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/agent/pkg/env"
-	"github.com/yusing/go-proxy/agent/pkg/server"
-	"github.com/yusing/go-proxy/internal/gperr"
-	"github.com/yusing/go-proxy/internal/metrics/systeminfo"
-	httpServer "github.com/yusing/go-proxy/internal/net/gphttp/server"
-	"github.com/yusing/go-proxy/internal/task"
-	"github.com/yusing/go-proxy/internal/utils/strutils"
-	"github.com/yusing/go-proxy/pkg"
-	socketproxy "github.com/yusing/go-proxy/socketproxy/pkg"
+	"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/handler"
+	"github.com/yusing/godoxy/internal/metrics/systeminfo"
+	socketproxy "github.com/yusing/godoxy/socketproxy/pkg"
+	gperr "github.com/yusing/goutils/errs"
+	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,
@@ -27,24 +37,24 @@ func main() {
 	ca := &agent.PEMPair{}
 	err := ca.Load(env.AgentCACert)
 	if err != nil {
-		gperr.LogFatal("init CA error", err)
+		log.Fatal().Err(err).Msg("init CA error")
 	}
 	caCert, err := ca.ToTLSCert()
 	if err != nil {
-		gperr.LogFatal("init CA error", err)
+		log.Fatal().Err(err).Msg("init CA error")
 	}
 
 	srv := &agent.PEMPair{}
 	srv.Load(env.AgentSSLCert)
 	if err != nil {
-		gperr.LogFatal("init SSL error", err)
+		log.Fatal().Err(err).Msg("init SSL error")
 	}
 	srvCert, err := srv.ToTLSCert()
 	if err != nil {
-		gperr.LogFatal("init SSL error", err)
+		log.Fatal().Err(err).Msg("init SSL error")
 	}
 
-	log.Info().Msgf("GoDoxy Agent version %s", pkg.GetVersion())
+	log.Info().Msgf("GoDoxy Agent version %s", version.Get())
 	log.Info().Msgf("Agent name: %s", env.AgentName)
 	log.Info().Msgf("Agent port: %d", env.AgentPort)
 	log.Info().Msgf("Agent runtime: %s", env.Runtime)
@@ -53,27 +63,102 @@ 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))
 
 		log.Info().Msgf("%s socket listening on: %s", runtime, socketproxy.ListenAddr)
-		opts := httpServer.Options{
-			Name:     runtime,
-			HTTPAddr: socketproxy.ListenAddr,
-			Handler:  socketproxy.NewHandler(),
+		l, err := net.Listen("tcp", socketproxy.ListenAddr)
+		if err != nil {
+			gperr.LogFatal("failed to listen on port", err)
 		}
-		httpServer.StartServer(t, opts)
+		errLog := log.Logger.With().Str("level", "error").Str("component", "socketproxy").Logger()
+		srv := http.Server{
+			Handler: socketproxy.NewHandler(),
+			BaseContext: func(net.Listener) context.Context {
+				return t.Context()
+			},
+			ErrorLog: stdlog.New(&errLog, "", 0),
+		}
+		srv.Serve(l)
 	}
 
 	systeminfo.Poller.Start()

agent/go.mod

@@ -1,113 +1,104 @@
-module github.com/yusing/go-proxy/agent
+module github.com/yusing/godoxy/agent
 
-go 1.25.1
+go 1.25.5
 
-replace github.com/yusing/go-proxy => ..
-
-replace github.com/yusing/go-proxy/socketproxy => ../socket-proxy
-
-replace github.com/yusing/go-proxy/internal/utils => ../internal/utils
-
-replace github.com/shirou/gopsutil/v4 => github.com/godoxy-app/gopsutil/v4 v4.0.0-20250816043325-ee003f88b84d
+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
 
 require (
-	github.com/gin-gonic/gin v1.10.1
+	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 v4.1.0
+	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/yusing/go-proxy v0.17.6
-	github.com/yusing/go-proxy/internal/utils v0.0.0
-	github.com/yusing/go-proxy/socketproxy v0.0.0-00010101000000-000000000000
+	github.com/yusing/godoxy v0.23.1
+	github.com/yusing/godoxy/socketproxy v0.0.0-00010101000000-000000000000
+	github.com/yusing/goutils v0.7.0
 )
 
 require (
-	github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
-	github.com/PuerkitoBio/goquery v1.10.3 // indirect
-	github.com/andybalholm/cascadia v1.3.3 // indirect
+	github.com/andybalholm/brotli v1.2.0 // indirect
 	github.com/bytedance/gopkg v0.1.3 // indirect
-	github.com/bytedance/sonic v1.14.1 // indirect
-	github.com/bytedance/sonic/loader v0.3.0 // indirect
-	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
+	github.com/bytedance/sonic/loader v0.4.0 // 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 v28.4.0+incompatible // indirect
-	github.com/docker/docker v28.4.0+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 v0.8.4 // indirect
+	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.10 // 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 v10.27.0 // 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 v1.18.0 // indirect
+	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/gorilla/mux v1.8.1 // indirect
-	github.com/gotify/server/v2 v2.7.2 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.2 // 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
 	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/lithammer/fuzzysearch v1.1.8 // indirect
-	github.com/lufia/plan9stats v0.0.0-20250827001030-24949be3fa54 // indirect
+	github.com/lufia/plan9stats v0.0.0-20251013123823-9fd1530e3ec3 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
-	github.com/moby/sys/sequential v0.6.0 // indirect
+	github.com/moby/moby/api v1.52.0 // indirect
+	github.com/moby/moby/client v0.2.1 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
-	github.com/oschwald/maxminddb-golang v1.13.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pion/logging v0.2.4 // indirect
+	github.com/pion/transport/v4 v4.0.1 // 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/quic-go/qpack v0.5.1 // indirect
-	github.com/quic-go/quic-go v0.54.0 // indirect
-	github.com/samber/lo v1.51.0 // indirect
-	github.com/samber/slog-common v0.19.0 // indirect
-	github.com/samber/slog-zerolog/v2 v2.7.3 // indirect
-	github.com/shirou/gopsutil/v4 v4.25.8 // 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 v0.58.0 // indirect
+	github.com/shirou/gopsutil/v4 v4.25.12 // indirect
 	github.com/sirupsen/logrus v1.9.4-0.20230606125235-dd1b4c2e81af // indirect
-	github.com/spf13/afero v1.15.0 // indirect
-	github.com/tklauser/go-sysconf v0.3.15 // indirect
-	github.com/tklauser/numcpus v0.10.0 // 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 v1.3.0 // indirect
-	github.com/vincent-petithory/dataurl v1.0.0 // indirect
-	github.com/yusing/ds v0.1.0 // indirect
+	github.com/ugorji/go/codec v1.3.1 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasthttp v1.69.0 // indirect
+	github.com/yusing/ds v0.3.1 // indirect
+	github.com/yusing/gointernals v0.1.16 // indirect
+	github.com/yusing/goutils/http/reverseproxy v0.0.0-20260109021609-78fda75d1e58 // indirect
+	github.com/yusing/goutils/http/websocket v0.0.0-20260109021609-78fda75d1e58 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
-	go.opentelemetry.io/auto/sdk v1.2.0 // 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/exporters/otlp/otlptrace v1.37.0 // indirect
-	go.opentelemetry.io/otel/metric v1.38.0 // indirect
-	go.opentelemetry.io/otel/trace v1.38.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.7.1 // indirect
-	go.uber.org/atomic v1.11.0 // indirect
-	go.uber.org/mock v0.6.0 // indirect
-	golang.org/x/arch v0.21.0 // indirect
-	golang.org/x/crypto v0.42.0 // indirect
-	golang.org/x/mod v0.28.0 // indirect
-	golang.org/x/net v0.44.0 // indirect
-	golang.org/x/sync v0.17.0 // indirect
-	golang.org/x/sys v0.36.0 // indirect
-	golang.org/x/text v0.29.0 // indirect
-	golang.org/x/time v0.13.0 // indirect
-	golang.org/x/tools v0.37.0 // indirect
-	google.golang.org/protobuf v1.36.9 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // 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 v0.46.0 // indirect
+	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/sys v0.40.0 // 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
-	gotest.tools/v3 v3.5.2 // indirect
 )

agent/go.sum

@@ -1,52 +1,64 @@
-github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c h1:udKWzYgxTojEKWjV8V+WSxDXJ4NFATAsZjh8iIbsQIg=
-github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
-github.com/PuerkitoBio/goquery v1.10.3 h1:pFYcNSqHxBD06Fpj/KsbStFRsgRATgnf3LeXiUkhzPo=
-github.com/PuerkitoBio/goquery v1.10.3/go.mod h1:tMUX0zDMHXYlAQk6p35XxQMqMweEKB7iK7iLNd4RH4Y=
+github.com/PuerkitoBio/goquery v1.11.0 h1:jZ7pwMQXIITcUXNH83LLk+txlaEy6NVOfTuP43xxfqw=
+github.com/PuerkitoBio/goquery v1.11.0/go.mod h1:wQHgxUOU3JGuj3oD/QFfxUdlzW6xPHfqyHre6VMY4DQ=
+github.com/andybalholm/brotli v1.2.0 h1:ukwgCxwYrmACq68yiUqwIWnGY0cTPox/M94sVwToPjQ=
+github.com/andybalholm/brotli v1.2.0/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
 github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kktS1LM=
 github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA=
+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=
 github.com/bytedance/gopkg v0.1.3/go.mod h1:576VvJ+eJgyCzdjS+c4+77QF3p7ubbtiKARP3TxducM=
-github.com/bytedance/sonic v1.14.1 h1:FBMC0zVz5XUmE4z9wF4Jey0An5FueFvOsTKKKtwIl7w=
-github.com/bytedance/sonic v1.14.1/go.mod h1:gi6uhQLMbTdeP0muCnrjHLeCUPyb70ujhnNlhOylAFc=
-github.com/bytedance/sonic/loader v0.3.0 h1:dskwH8edlzNMctoruo8FPTJDF3vLtDT0sXZwvZJyqeA=
-github.com/bytedance/sonic/loader v0.3.0/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
+github.com/bytedance/sonic v1.14.2 h1:k1twIoe97C1DtYUo+fZQy865IuHia4PR5RPiuGPPIIE=
+github.com/bytedance/sonic v1.14.2/go.mod h1:T80iDELeHiHKSc0C9tubFygiuXoGzrkjKzX2quAx980=
+github.com/bytedance/sonic/loader v0.4.0 h1:olZ7lEqcxtZygCK9EKYKADnpQoYkRQxaeY2NYzevs+o=
+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=
 github.com/containerd/errdefs v1.0.0/go.mod h1:+YBYIdtsnF4Iw6nWZhJcqGSg/dwvV7tyJ/kCkyJ2k+M=
 github.com/containerd/errdefs/pkg v0.3.0 h1:9IKJ06FvyNlexW690DXuQNx2KA2cUJXx151Xdx3ZPPE=
 github.com/containerd/errdefs/pkg v0.3.0/go.mod h1:NJw6s9HwNuRhnjJhM7pylWwMyAkmCQvQ4GpJHEqRLVk=
-github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
-github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
+github.com/coreos/go-oidc/v3 v3.17.0 h1:hWBGaQfbi0iVviX4ibC7bk8OKT5qNr4klBaCHVNvehc=
+github.com/coreos/go-oidc/v3 v3.17.0/go.mod h1:wqPbKFrVnE90vty060SB40FCJ8fTHTxSwyXJqZH+sI8=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/diskfs/go-diskfs v1.7.0 h1:vonWmt5CMowXwUc79jWyGrf2DIMeoOjkLlMnQYGVOs8=
+github.com/diskfs/go-diskfs v1.7.0/go.mod h1:LhQyXqOugWFRahYUSw47NyZJPezFzB9UELwhpszLP/k=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
-github.com/docker/cli v28.4.0+incompatible h1:RBcf3Kjw2pMtwui5V0DIMdyeab8glEw5QY0UUU4C9kY=
-github.com/docker/cli v28.4.0+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
-github.com/docker/docker v28.4.0+incompatible h1:KVC7bz5zJY/4AZe/78BIvCnPsLaC9T/zh72xnlrTTOk=
-github.com/docker/docker v28.4.0+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+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 v29.1.3+incompatible h1:+kz9uDWgs+mAaIZojWfFt4d53/jv0ZUOOoSh5ZnH36c=
+github.com/docker/cli v29.1.3+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
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 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
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@@ -309,3 +270,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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+pgregory.net/rapid v1.2.0 h1:keKAYRcjm+e1F0oAuU5F5+YPAWcyxNNRK2wud503Gnk=
+pgregory.net/rapid v1.2.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=

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`](config.go)                 | Core configuration, initialization, and API client logic. |
+| [`new_agent.go`](new_agent.go)           | Agent creation and certificate generation logic.          |
+| [`docker_compose.go`](docker_compose.go) | Generator for agent Docker Compose configurations.        |
+| [`bare_metal.go`](bare_metal.go)         | Generator for bare metal installation scripts.            |
+| [`env.go`](env.go)                       | Environment configuration types and constants.            |
+| `common/`                                | Shared constants and utilities for agents.                |
+
+## Core Types
+
+### [`AgentConfig`](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`](config.go:45)
+
+Contains basic metadata about the agent, including its version, name, and container runtime (Docker or Podman).
+
+### [`PEMPair`](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`](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`](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`](config.go:29) handles the loading of CA and client certificates to establish secure connections.
+
+### 2. Agent Discovery and Initialization
+
+The [`Init`](config.go:231) and [`InitWithCerts`](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()`](docker_compose.go:21).
+- **Bare Metal**: Generates a shell script to install and run the agent as a systemd service via [`AgentEnvConfig.Generate()`](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`](config.go:90) and [`GetAgentAddrFromDockerHost`](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

@@ -1,67 +0,0 @@
-package agent
-
-import (
-	"iter"
-
-	"github.com/puzpuzpuz/xsync/v4"
-	"github.com/yusing/go-proxy/internal/common"
-)
-
-var agentPool = xsync.NewMap[string, *AgentConfig](xsync.WithPresize(10))
-
-func init() {
-	if common.IsTest {
-		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/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"
@@ -15,31 +18,51 @@ import (
 
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/agent/pkg/certs"
-	"github.com/yusing/go-proxy/pkg"
+	"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 string           `json:"version"`
-	Runtime ContainerRuntime `json:"runtime"`
+	AgentInfo
 
-	httpClient *http.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
@@ -81,13 +104,15 @@ func (cfg *AgentConfig) Parse(addr string) error {
 	return nil
 }
 
-var serverVersion = pkg.GetVersion()
+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()
@@ -95,71 +120,115 @@ func (cfg *AgentConfig) StartWithCerts(ctx context.Context, ca, crt, key []byte)
 	if !ok {
 		return errors.New("invalid ca certificate")
 	}
-
-	cfg.tlsConfig = &tls.Config{
-		Certificates: []tls.Certificate{clientCert},
-		RootCAs:      caCertPool,
-		ServerName:   CertsDNSName,
+	// 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
 	}
 
-	// create transport and http client
-	cfg.httpClient = cfg.NewHTTPClient()
+	cfg.tlsConfig = tls.Config{
+		Certificates: []tls.Certificate{clientCert},
+		RootCAs:      caCertPool,
+		ServerName:   common.CertsDNSName,
+		MinVersion:   tls.VersionTLS12,
+	}
 
 	ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
 	defer cancel()
 
-	// get agent name
-	name, _, err := cfg.Fetch(ctx, EndpointName)
+	status, err := cfg.fetchJSON(ctx, EndpointInfo, &cfg.AgentInfo)
 	if err != nil {
 		return err
 	}
 
-	cfg.Name = string(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
-	agentVersionBytes, _, err := cfg.Fetch(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
-	runtimeBytes, status, err := cfg.Fetch(ctx, EndpointRuntime)
-	if err != nil {
-		return err
-	}
-	switch status {
-	case http.StatusOK:
-		switch string(runtimeBytes) {
-		case "docker":
-			cfg.Runtime = ContainerRuntimeDocker
-		// case "nerdctl":
-		// 	cfg.Runtime = ContainerRuntimeNerdctl
-		case "podman":
-			cfg.Runtime = ContainerRuntimePodman
-		default:
-			return fmt.Errorf("invalid agent runtime: %s", runtimeBytes)
-		}
-	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, runtimeBytes)
-	}
-
-	cfg.Version = string(agentVersionBytes)
-	agentVersion := pkg.ParseVersion(cfg.Version)
-
-	if serverVersion.IsNewerMajorThan(agentVersion) {
-		log.Warn().Msgf("agent %s major version mismatch: server: %s, agent: %s", cfg.Name, serverVersion, agentVersion)
+	if serverVersion.IsNewerThanMajor(cfg.Version) {
+		log.Warn().Msgf("agent %s major version mismatch: server: %s, agent: %s", cfg.Name, serverVersion, cfg.Version)
 	}
 
 	log.Info().Msgf("agent %q initialized", cfg.Name)
 	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)
@@ -175,13 +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)
+}
+
+// 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 {
@@ -195,10 +290,14 @@ func (cfg *AgentConfig) Transport() *http.Transport {
 			}
 			return cfg.DialContext(ctx)
 		},
-		TLSClientConfig: cfg.tlsConfig,
+		TLSClientConfig: &cfg.tlsConfig,
 	}
 }
 
+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) {
@@ -208,3 +307,58 @@ func (cfg *AgentConfig) DialContext(ctx context.Context) (net.Conn, error) {
 func (cfg *AgentConfig) String() string {
 	return cfg.Name + "@" + cfg.Addr
 }
+
+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/http_requests.go

@@ -1,72 +0,0 @@
-package agent
-
-import (
-	"context"
-	"io"
-	"net/http"
-
-	"github.com/gorilla/websocket"
-	"github.com/yusing/go-proxy/internal/net/gphttp/reverseproxy"
-	nettypes "github.com/yusing/go-proxy/internal/net/types"
-)
-
-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
-	}
-	return cfg.httpClient.Do(req)
-}
-
-func (cfg *AgentConfig) Forward(req *http.Request, endpoint string) (*http.Response, error) {
-	req = req.WithContext(req.Context())
-	req.URL.Host = AgentHost
-	req.URL.Scheme = "https"
-	req.URL.Path = APIEndpointBase + endpoint
-	req.RequestURI = ""
-	resp, err := cfg.httpClient.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	return resp, nil
-}
-
-func (cfg *AgentConfig) Fetch(ctx context.Context, endpoint string) ([]byte, int, error) {
-	resp, err := cfg.Do(ctx, "GET", endpoint, nil)
-	if err != nil {
-		return nil, 0, err
-	}
-	defer resp.Body.Close()
-	data, _ := io.ReadAll(resp.Body)
-	return data, resp.StatusCode, nil
-}
-
-func (cfg *AgentConfig) 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},
-	})
-}
-
-// ReverseProxy reverse proxies the request to the agent
-//
-// 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) error {
-	rp := reverseproxy.NewReverseProxy("agent", nettypes.NewURL(AgentURL), cfg.Transport())
-	uri := APIEndpointBase + endpoint
-	if req.URL.RawQuery != "" {
-		uri += "?" + req.URL.RawQuery
-	}
-	r, err := http.NewRequestWithContext(req.Context(), req.Method, uri, req.Body)
-	if err != nil {
-		return err
-	}
-	r.Header = req.Header
-	rp.ServeHTTP(w, r)
-	return nil
-}

agent/pkg/agent/new_agent.go

@@ -3,6 +3,8 @@ package agent
 import (
 	"crypto/aes"
 	"crypto/cipher"
+	"crypto/ecdsa"
+	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/tls"
 	"crypto/x509"
@@ -10,18 +12,13 @@ import (
 	"encoding/base64"
 	"encoding/pem"
 	"errors"
+	"fmt"
 	"io"
 	"math/big"
 	"strings"
 	"time"
 
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"fmt"
-)
-
-const (
-	CertsDNSName = "godoxy.agent"
+	"github.com/yusing/godoxy/agent/pkg/agent/common"
 )
 
 func toPEMPair(certDER []byte, key *ecdsa.PrivateKey) *PEMPair {
@@ -157,7 +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
@@ -197,9 +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,
@@ -229,9 +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,
@@ -244,5 +241,5 @@ func NewAgent() (ca, srv, client *PEMPair, err error) {
 	}
 
 	client = toPEMPair(clientCertDER, clientKey)
-	return
+	return ca, srv, client, err
 }

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 +1,179 @@
+package stream
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"errors"
+	"io"
+	"net"
+	"time"
+
+	"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
+	_ = conn.SetReadDeadline(time.Now().Add(dialTimeout))
+	if _, err := io.ReadFull(conn, headerBuf[:]); err != nil {
+		return nil, err
+	}
+	_ = conn.SetReadDeadline(time.Time{})
+
+	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 +1,208 @@
+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
+	_ = clientConn.SetReadDeadline(time.Now().Add(dialTimeout))
+	if _, err := io.ReadFull(clientConn, headerBuf[:]); err != nil {
+		s.logger(clientConn).Err(err).Msg("failed to read stream header")
+		return
+	}
+	_ = clientConn.SetReadDeadline(time.Time{})
+
+	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/agentproxy/config.go

@@ -0,0 +1,73 @@
+package agentproxy
+
+import (
+	"encoding/base64"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/bytedance/sonic"
+	route "github.com/yusing/godoxy/internal/route/types"
+)
+
+type Config struct {
+	Scheme string `json:"scheme,omitempty"`
+	Host   string `json:"host,omitempty"` // host or host:port
+
+	route.HTTPConfig
+}
+
+func ConfigFromHeaders(h http.Header) (Config, error) {
+	cfg, err := proxyConfigFromHeaders(h)
+	if cfg.Host == "" || err != nil {
+		cfg = proxyConfigFromHeadersLegacy(h)
+	}
+	return cfg, nil
+}
+
+func proxyConfigFromHeadersLegacy(h http.Header) (cfg Config) {
+	cfg.Host = h.Get(HeaderXProxyHost)
+	isHTTPS, _ := strconv.ParseBool(h.Get(HeaderXProxyHTTPS))
+	cfg.NoTLSVerify, _ = strconv.ParseBool(h.Get(HeaderXProxySkipTLSVerify))
+	responseHeaderTimeout, err := strconv.Atoi(h.Get(HeaderXProxyResponseHeaderTimeout))
+	if err != nil {
+		responseHeaderTimeout = 0
+	}
+	cfg.ResponseHeaderTimeout = time.Duration(responseHeaderTimeout) * time.Second
+
+	cfg.Scheme = "http"
+	if isHTTPS {
+		cfg.Scheme = "https"
+	}
+
+	return cfg
+}
+
+func proxyConfigFromHeaders(h http.Header) (cfg Config, err error) {
+	cfg.Scheme = h.Get(HeaderXProxyScheme)
+	cfg.Host = h.Get(HeaderXProxyHost)
+
+	cfgBase64 := h.Get(HeaderXProxyConfig)
+	cfgJSON, err := base64.StdEncoding.DecodeString(cfgBase64)
+	if err != nil {
+		return cfg, err
+	}
+
+	err = sonic.Unmarshal(cfgJSON, &cfg)
+	return cfg, err
+}
+
+func (cfg *Config) SetAgentProxyConfigHeadersLegacy(h http.Header) {
+	h.Set(HeaderXProxyHost, cfg.Host)
+	h.Set(HeaderXProxyHTTPS, strconv.FormatBool(cfg.Scheme == "https"))
+	h.Set(HeaderXProxySkipTLSVerify, strconv.FormatBool(cfg.NoTLSVerify))
+	h.Set(HeaderXProxyResponseHeaderTimeout, strconv.Itoa(int(cfg.ResponseHeaderTimeout.Round(time.Second).Seconds())))
+}
+
+func (cfg *Config) SetAgentProxyConfigHeaders(h http.Header) {
+	h.Set(HeaderXProxyHost, cfg.Host)
+	h.Set(HeaderXProxyScheme, string(cfg.Scheme))
+	cfgJSON, _ := sonic.Marshal(cfg.HTTPConfig)
+	cfgBase64 := base64.StdEncoding.EncodeToString(cfgJSON)
+	h.Set(HeaderXProxyConfig, cfgBase64)
+}

agent/pkg/agentproxy/headers.go

@@ -1,27 +1,14 @@
 package agentproxy
 
-import (
-	"net/http"
-	"strconv"
+const (
+	HeaderXProxyScheme = "X-Proxy-Scheme"
+	HeaderXProxyHost   = "X-Proxy-Host"
+	HeaderXProxyConfig = "X-Proxy-Config"
 )
 
+// deprecated
 const (
-	HeaderXProxyHost                  = "X-Proxy-Host"
 	HeaderXProxyHTTPS                 = "X-Proxy-Https"
 	HeaderXProxySkipTLSVerify         = "X-Proxy-Skip-Tls-Verify"
 	HeaderXProxyResponseHeaderTimeout = "X-Proxy-Response-Header-Timeout"
 )
-
-type AgentProxyHeaders struct {
-	Host                  string
-	IsHTTPS               bool
-	SkipTLSVerify         bool
-	ResponseHeaderTimeout int
-}
-
-func SetAgentProxyHeaders(r *http.Request, headers *AgentProxyHeaders) {
-	r.Header.Set(HeaderXProxyHost, headers.Host)
-	r.Header.Set(HeaderXProxyHTTPS, strconv.FormatBool(headers.IsHTTPS))
-	r.Header.Set(HeaderXProxySkipTLSVerify, strconv.FormatBool(headers.SkipTLSVerify))
-	r.Header.Set(HeaderXProxyResponseHeaderTimeout, strconv.Itoa(headers.ResponseHeaderTimeout))
-}

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/certs/zip.go

@@ -6,7 +6,7 @@ import (
 	"io"
 	"path/filepath"
 
-	"github.com/yusing/go-proxy/internal/utils/strutils"
+	strutils "github.com/yusing/goutils/strings"
 )
 
 const AgentCertsBasePath = "certs"

agent/pkg/certs/zip_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
-	"github.com/yusing/go-proxy/agent/pkg/certs"
+	"github.com/yusing/godoxy/agent/pkg/certs"
 )
 
 func TestZipCert(t *testing.T) {

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/env/env.go

@@ -3,8 +3,8 @@ package env
 import (
 	"os"
 
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/internal/common"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/goutils/env"
 
 	"github.com/rs/zerolog/log"
 )
@@ -32,14 +32,14 @@ func init() {
 }
 
 func Load() {
-	DockerSocket = common.GetEnvString("DOCKER_SOCKET", "/var/run/docker.sock")
-	AgentName = common.GetEnvString("AGENT_NAME", DefaultAgentName())
-	AgentPort = common.GetEnvInt("AGENT_PORT", 8890)
-	AgentSkipClientCertCheck = common.GetEnvBool("AGENT_SKIP_CLIENT_CERT_CHECK", false)
+	DockerSocket = env.GetEnvString("DOCKER_SOCKET", "/var/run/docker.sock")
+	AgentName = env.GetEnvString("AGENT_NAME", DefaultAgentName())
+	AgentPort = env.GetEnvInt("AGENT_PORT", 8890)
+	AgentSkipClientCertCheck = env.GetEnvBool("AGENT_SKIP_CLIENT_CERT_CHECK", false)
 
-	AgentCACert = common.GetEnvString("AGENT_CA_CERT", "")
-	AgentSSLCert = common.GetEnvString("AGENT_SSL_CERT", "")
-	Runtime = agent.ContainerRuntime(common.GetEnvString("RUNTIME", "docker"))
+	AgentCACert = env.GetEnvString("AGENT_CA_CERT", "")
+	AgentSSLCert = env.GetEnvString("AGENT_SSL_CERT", "")
+	Runtime = agent.ContainerRuntime(env.GetEnvString("RUNTIME", "docker"))
 
 	switch Runtime {
 	case agent.ContainerRuntimeDocker, agent.ContainerRuntimePodman: //, agent.ContainerRuntimeNerdctl:

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 (
-	"encoding/json"
-	"fmt"
+	"net"
 	"net/http"
 	"net/url"
-	"os"
+	"strconv"
 	"strings"
+	"time"
 
-	"github.com/yusing/go-proxy/internal/types"
-	"github.com/yusing/go-proxy/internal/watcher/health/monitor"
+	"github.com/bytedance/sonic"
+	healthcheck "github.com/yusing/godoxy/internal/health/check"
+	"github.com/yusing/godoxy/internal/types"
 )
 
-var defaultHealthConfig = types.DefaultHealthConfig()
-
 func CheckHealth(w http.ResponseWriter, r *http.Request) {
 	query := r.URL.Query()
 	scheme := query.Get("scheme")
@@ -21,9 +20,12 @@ 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
-	var err error
+	var (
+		result types.HealthCheckResult
+		err    error
+	)
 	switch scheme {
 	case "fileserver":
 		path := query.Get("path")
@@ -31,24 +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)
@@ -61,12 +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 {
@@ -76,5 +73,18 @@ func CheckHealth(w http.ResponseWriter, r *http.Request) {
 
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
-	json.NewEncoder(w).Encode(result)
+	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/check_health_test.go

@@ -10,9 +10,9 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/agent/pkg/handler"
-	"github.com/yusing/go-proxy/internal/types"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/handler"
+	"github.com/yusing/godoxy/internal/types"
 )
 
 func TestCheckHealthHTTP(t *testing.T) {

agent/pkg/handler/handler.go

@@ -1,16 +1,16 @@
 package handler
 
 import (
-	"fmt"
 	"net/http"
 
+	"github.com/bytedance/sonic"
 	"github.com/gin-gonic/gin"
 	"github.com/gorilla/websocket"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/agent/pkg/env"
-	"github.com/yusing/go-proxy/internal/metrics/systeminfo"
-	"github.com/yusing/go-proxy/pkg"
-	socketproxy "github.com/yusing/go-proxy/socketproxy/pkg"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/env"
+	"github.com/yusing/godoxy/internal/metrics/systeminfo"
+	socketproxy "github.com/yusing/godoxy/socketproxy/pkg"
+	"github.com/yusing/goutils/version"
 )
 
 type ServeMux struct{ *http.ServeMux }
@@ -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, pkg.GetVersion())
-	})
-	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

@@ -1,14 +1,14 @@
 package handler
 
 import (
-	"crypto/tls"
+	"fmt"
 	"net/http"
 	"net/http/httputil"
-	"strconv"
+	"strings"
 	"time"
 
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/agent/pkg/agentproxy"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/agentproxy"
 )
 
 func NewTransport() *http.Transport {
@@ -24,42 +24,47 @@ func NewTransport() *http.Transport {
 }
 
 func ProxyHTTP(w http.ResponseWriter, r *http.Request) {
-	host := r.Header.Get(agentproxy.HeaderXProxyHost)
-	isHTTPS, _ := strconv.ParseBool(r.Header.Get(agentproxy.HeaderXProxyHTTPS))
-	skipTLSVerify, _ := strconv.ParseBool(r.Header.Get(agentproxy.HeaderXProxySkipTLSVerify))
-	responseHeaderTimeout, err := strconv.Atoi(r.Header.Get(agentproxy.HeaderXProxyResponseHeaderTimeout))
+	cfg, err := agentproxy.ConfigFromHeaders(r.Header)
 	if err != nil {
-		responseHeaderTimeout = 0
-	}
-
-	if host == "" {
-		http.Error(w, "missing required headers", http.StatusBadRequest)
+		http.Error(w, fmt.Sprintf("failed to parse agent proxy config: %s", err.Error()), http.StatusBadRequest)
 		return
 	}
 
-	scheme := "http"
-	if isHTTPS {
-		scheme = "https"
-	}
-
 	transport := NewTransport()
-	if skipTLSVerify {
-		transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+	if cfg.ResponseHeaderTimeout > 0 {
+		transport.ResponseHeaderTimeout = cfg.ResponseHeaderTimeout
+	}
+	if cfg.DisableCompression {
+		transport.DisableCompression = true
 	}
 
-	if responseHeaderTimeout > 0 {
-		transport.ResponseHeaderTimeout = time.Duration(responseHeaderTimeout) * time.Second
+	transport.TLSClientConfig, err = cfg.BuildTLSConfig(r.URL)
+	if err != nil {
+		http.Error(w, fmt.Sprintf("failed to build TLS client config: %s", err.Error()), http.StatusInternalServerError)
+		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) {
-			r.URL.Scheme = scheme
-			r.URL.Host = host
+			r.URL.Scheme = cfg.Scheme
+			r.URL.Host = cfg.Host
 		},
 		Transport: transport,
 	}

agent/pkg/server/server.go

@@ -1,43 +0,0 @@
-package server
-
-import (
-	"crypto/tls"
-	"crypto/x509"
-	"fmt"
-	"net/http"
-
-	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/agent/pkg/env"
-	"github.com/yusing/go-proxy/agent/pkg/handler"
-	"github.com/yusing/go-proxy/internal/net/gphttp/server"
-	"github.com/yusing/go-proxy/internal/task"
-)
-
-type Options struct {
-	CACert, ServerCert *tls.Certificate
-	Port               int
-}
-
-func StartAgentServer(parent task.Parent, opt Options) {
-	caCertPool := x509.NewCertPool()
-	caCertPool.AddCert(opt.CACert.Leaf)
-
-	// Configure TLS
-	tlsConfig := &tls.Config{
-		Certificates: []tls.Certificate{*opt.ServerCert},
-		ClientCAs:    caCertPool,
-		ClientAuth:   tls.RequireAndVerifyClientCert,
-	}
-
-	if env.AgentSkipClientCertCheck {
-		tlsConfig.ClientAuth = tls.NoClientCert
-	}
-
-	agentServer := &http.Server{
-		Addr:      fmt.Sprintf(":%d", opt.Port),
-		Handler:   handler.NewAgentHandler(),
-		TLSConfig: tlsConfig,
-	}
-
-	server.Start(parent, agentServer, nil, &log.Logger)
-}

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

@@ -5,19 +5,22 @@ import (
 	"sync"
 
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/internal/auth"
-	"github.com/yusing/go-proxy/internal/common"
-	"github.com/yusing/go-proxy/internal/config"
-	"github.com/yusing/go-proxy/internal/dnsproviders"
-	"github.com/yusing/go-proxy/internal/gperr"
-	"github.com/yusing/go-proxy/internal/homepage"
-	"github.com/yusing/go-proxy/internal/logging"
-	"github.com/yusing/go-proxy/internal/logging/memlogger"
-	"github.com/yusing/go-proxy/internal/metrics/systeminfo"
-	"github.com/yusing/go-proxy/internal/metrics/uptime"
-	"github.com/yusing/go-proxy/internal/net/gphttp/middleware"
-	"github.com/yusing/go-proxy/internal/task"
-	"github.com/yusing/go-proxy/pkg"
+	"github.com/yusing/godoxy/internal/api"
+	"github.com/yusing/godoxy/internal/auth"
+	"github.com/yusing/godoxy/internal/common"
+	"github.com/yusing/godoxy/internal/config"
+	"github.com/yusing/godoxy/internal/dnsproviders"
+	iconlist "github.com/yusing/godoxy/internal/homepage/icons/list"
+	"github.com/yusing/godoxy/internal/logging"
+	"github.com/yusing/godoxy/internal/logging/memlogger"
+	"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"
+	"github.com/yusing/goutils/version"
 )
 
 func parallel(fns ...func()) {
@@ -32,11 +35,11 @@ func main() {
 	initProfiling()
 
 	logging.InitLogger(os.Stderr, memlogger.GetMemLogger())
-	log.Info().Msgf("GoDoxy version %s", pkg.GetVersion())
+	log.Info().Msgf("GoDoxy version %s", version.Get())
 	log.Trace().Msg("trace enabled")
 	parallel(
 		dnsproviders.InitProviders,
-		homepage.InitIconListCache,
+		iconlist.InitCache,
 		systeminfo.Poller.Start,
 		middleware.LoadComposeFiles,
 	)
@@ -50,26 +53,31 @@ func main() {
 		prepareDirectory(dir)
 	}
 
-	cfg, err := config.Load()
+	err := config.Load()
 	if err != nil {
 		gperr.LogWarn("errors in config", err)
 	}
 
-	cfg.Start(&config.StartServersOptions{
-		Proxy: true,
-	})
+	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.
-	cfg.StartServers(&config.StartServersOptions{
-		API: true,
+	server.StartServer(task.RootTask("api_server", false), server.Options{
+		Name:     "api",
+		HTTPAddr: common.APIHTTPAddr,
+		Handler:  api.NewHandler(),
 	})
 
+	listenDebugServer()
+
 	uptime.Poller.Start()
 	config.WatchChanges()
 
-	task.WaitExit(cfg.Value().TimeoutShutdown)
+	task.WaitExit(config.Value().TimeoutShutdown)
 }
 
 func prepareDirectory(dir string) {

cmd/pprof_prof.go

@@ -10,16 +10,10 @@ import (
 	"time"
 
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/internal/utils/strutils"
+	strutils "github.com/yusing/goutils/strings"
 )
 
-const mb = 1024 * 1024
-
 func initProfiling() {
-	debug.SetGCPercent(-1)
-	debug.SetMemoryLimit(50 * mb)
-	debug.SetMaxStack(4 * mb)
-
 	go func() {
 		log.Info().Msgf("pprof server started at http://localhost:7777/debug/pprof/")
 		log.Error().Err(http.ListenAndServe(":7777", nil)).Msg("pprof server failed")
@@ -27,9 +21,14 @@ func initProfiling() {
 	go func() {
 		ticker := time.NewTicker(time.Second * 10)
 		defer ticker.Stop()
+
+		var m runtime.MemStats
+		var gcStats debug.GCStats
+
 		for range ticker.C {
-			var m runtime.MemStats
 			runtime.ReadMemStats(&m)
+			debug.ReadGCStats(&gcStats)
+
 			log.Info().Msgf("-----------------------------------------------------")
 			log.Info().Msgf("Timestamp: %s", time.Now().Format(time.RFC3339))
 			log.Info().Msgf("  Go Heap - In Use (Alloc/HeapAlloc): %s", strutils.FormatByteSize(m.Alloc))
@@ -37,8 +36,12 @@ func initProfiling() {
 			log.Info().Msgf("  Go Stacks - In Use (StackInuse): %s", strutils.FormatByteSize(m.StackInuse))
 			log.Info().Msgf("  Go Runtime - Other Sys (MSpanInuse, MCacheInuse, BuckHashSys, GCSys, OtherSys): %s", strutils.FormatByteSize(m.MSpanInuse+m.MCacheInuse+m.BuckHashSys+m.GCSys+m.OtherSys))
 			log.Info().Msgf("  Go Runtime - Total from OS (Sys): %s", strutils.FormatByteSize(m.Sys))
+			log.Info().Msgf("  Go Runtime - Freed from OS (HeapReleased): %s", strutils.FormatByteSize(m.HeapReleased))
 			log.Info().Msgf("  Number of Goroutines: %d", runtime.NumGoroutine())
-			log.Info().Msgf("  Number of GCs: %d", m.NumGC)
+			log.Info().Msgf("  Number of completed GC cycles: %d", m.NumGC)
+			log.Info().Msgf("  Number of GCs: %d", gcStats.NumGC)
+			log.Info().Msgf("  Total GC time: %s", gcStats.PauseTotal)
+			log.Info().Msgf("  Last GC time: %s", gcStats.LastGC.Format(time.DateTime))
 			log.Info().Msg("-----------------------------------------------------")
 		}
 	}()

compose.example.yml

@@ -22,26 +22,28 @@ services:
       - ${SOCKET_PROXY_LISTEN_ADDR:-127.0.0.1:2375}:2375
   frontend:
     image: ghcr.io/yusing/godoxy-frontend:${TAG:-latest}
+    # lite variant
+    # image: ghcr.io/yusing/godoxy-frontend:${TAG:-latest}-lite
     container_name: godoxy-frontend
     restart: unless-stopped
-    network_mode: host # do not change this
     env_file: .env
+    # comment out `user` for lite variant
     user: ${GODOXY_UID:-1000}:${GODOXY_GID:-1000}
     read_only: true
     tmpfs:
       - /app/.next/cache # next image caching
+
+      # for lite variant, do not change uid/gid
+      # - /var/cache/nginx:uid=101,gid=101
+      # - /run:uid=101,gid=101
     security_opt:
       - no-new-privileges:true
     cap_drop:
       - all
     depends_on:
       - app
-    environment:
-      HOSTNAME: 127.0.0.1
-      PORT: ${GODOXY_FRONTEND_PORT:-3000}
     labels:
       proxy.aliases: ${GODOXY_FRONTEND_ALIASES:-godoxy}
-      proxy.#1.port: ${GODOXY_FRONTEND_PORT:-3000}
       # proxy.#1.middlewares.cidr_whitelist: |
       #   status: 403
       #   message: IP not allowed
@@ -74,10 +76,9 @@ services:
       - ./error_pages:/app/error_pages:ro
       - ./data:/app/data
 
-      # To use autocert, certs will be stored in "./certs".
-      # You can also use a docker volume to store it
+      # This path stores certs obtained from autocert and agent TLS client certs
       - ./certs:/app/certs
 
-      # remove "./certs:/app/certs" and uncomment below to use existing certificate
+      # mount existing certificate
       # - /path/to/certs/cert.crt:/app/certs/cert.crt
       # - /path/to/certs/priv.key:/app/certs/priv.key

config.example.yml

@@ -4,6 +4,8 @@
 
 # autocert:
 #   provider: local
+#   cert_path: /path/to/cert.crt # default: /app/certs/cert.crt
+#   key_path: /path/to/priv.key # default: /app/certs/priv.key
 
 # 2. cloudflare
 # autocert:
@@ -17,6 +19,10 @@
 
 # 3. other providers, see https://docs.godoxy.dev/DNS-01-Providers
 
+# Access Control
+# When enabled, it will be applied globally at connection level,
+# all incoming connections (web, tcp and udp) will be checked against the ACL rules.
+
 # acl:
 #   default: allow # or deny (default: allow)
 #   allow_local: true # or false (default: true)
@@ -31,12 +37,21 @@
 #     - country:US
 #     - timezone:Asia/Shanghai
 #   log: # warning: logging ACL can be slow based on the number of incoming connections and configured rules
-#     buffer_size: 65536 # (default: 64KB)
 #     path: /app/logs/acl.log # (default: none)
 #     stdout: false # (default: false)
-#     keep: last 10 # (default: none)
+#     keep: 30 days # (default: 30 days)
+#     log_allowed: false # (default: false)
+#   notify:
+#     interval: 1m # (default: 1m)
+#     to: [gotify, discord] # names under providers.notification
+#     include_allowed: false # (default: false)
 
 entrypoint:
+  # Proxy Protocol: https://www.haproxy.com/blog/use-the-proxy-protocol-to-preserve-a-clients-ip-address
+  # When set to true, web entrypoint and all tcp routes will be wrapped with Proxy Protocol listener in order to preserve the client's IP address.
+  # Note that HTTP/3 with proxy protocol is not supported yet.
+  support_proxy_protocol: false
+
   # Below define an example of middleware config
   # 1. set security headers
   # 2. block non local IP connections
@@ -57,20 +72,27 @@ entrypoint:
         X-Frame-Options: SAMEORIGIN
         Referrer-Policy: same-origin
         Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
-    # - use: CIDRWhitelist
-    #   allow:
-    #     - "127.0.0.1"
-    #     - "10.0.0.0/8"
-    #     - "172.16.0.0/12"
-    #     - "192.168.0.0/16"
-    #   status: 403
-    #   message: "Forbidden"
     # - use: RedirectHTTP
 
   # below enables access log
   access_log:
     format: combined
     path: /app/logs/entrypoint.log
+    stdout: false # (default: false)
+    keep: 30 days # (default: 30 days)
+
+  # customize behavior for non-existent routes, e.g. pass over to another proxy
+  #
+  # rules:
+  #   not_found:
+  #     - 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
@@ -95,9 +117,13 @@ providers:
     # remote-1: tcp://10.0.2.1:2375
     # remote-2: ssh://root:1234@10.0.2.2
 
-  # notification providers (notify when service health changes)
+  # notification providers
   #
   # notification:
+  #   - name: ntfy
+  #     provider: ntfy
+  #     url: https://ntfy.domain.tld
+  #     topic: godoxy
   #   - name: gotify
   #     provider: gotify
   #     url: https://gotify.domain.tld
@@ -106,6 +132,11 @@ providers:
   #     provider: webhook
   #     url: https://discord.com/api/webhooks/...
   #     template: discord # this means use payload template from internal/notif/templates/discord.json
+  #   - name: pushover
+  #     provider: webhook
+  #     url: https://api.pushover.net/1/messages.json
+  #     mime_type: application/x-www-form-urlencoded
+  #     payload: '{"token": "your-app-token", "user": "your-user-key", "title": $title, "message": $message}'
 
   # Proxmox providers (for idlesleep support for proxmox LXCs)
   #
@@ -115,8 +146,8 @@ providers:
   #     secret: aaaa-bbbb-cccc-dddd
   #     no_tls_verify: true
 
-# Check https://docs.godoxy.dev/Certificates-and-domain-matching
-# for explaination of `match_domains`
+# Match domains
+# See https://docs.godoxy.dev/Certificates-and-domain-matching
 #
 # match_domains:
 #   - my.site

dev.Dockerfile

@@ -1,33 +1,7 @@
-# Stage 1: deps
-FROM golang:1.25.0-alpine AS deps
-HEALTHCHECK NONE
+FROM debian:bookworm-slim
 
-# package version does not matter
-# trunk-ignore(hadolint/DL3018)
-RUN apk add --no-cache tzdata make libcap-setcap
-
-# Stage 3: Final image
-FROM alpine:3.22
-
-LABEL maintainer="yusing@6uo.me"
-LABEL proxy.exclude=1
-
-# copy timezone data
-COPY --from=deps /usr/share/zoneinfo /usr/share/zoneinfo
-
-# copy certs
-COPY --from=deps /etc/ssl/certs /etc/ssl/certs
-
-ARG TARGET
-ENV TARGET=${TARGET}
-
-ENV DOCKER_HOST=unix:///var/run/docker.sock
-
-# copy binary
-COPY bin/${TARGET} /app/run
+RUN apt-get update && apt-get install -y ca-certificates
 
 WORKDIR /app
 
-RUN chown -R 1000:1000 /app
-
-CMD ["/app/run"]
+CMD ["/app/run"]

dev.compose.yml

@@ -1,15 +1,19 @@
+x-benchmark: &benchmark
+  restart: no
+  labels:
+    proxy.exclude: true
+    proxy.#1.healthcheck.disable: true
 services:
   app:
     image: godoxy-dev
     build:
       context: .
       dockerfile: dev.Dockerfile
-      args:
-        - TARGET=godoxy
     container_name: godoxy-proxy-dev
     restart: unless-stopped
     env_file: dev.env
     environment:
+      DOCKER_HOST: unix:///var/run/docker.sock
       TZ: Asia/Hong_Kong
       API_ADDR: 127.0.0.1:8999
       API_USER: dev
@@ -17,13 +21,14 @@ services:
       API_SKIP_ORIGIN_CHECK: true
       API_JWT_TTL: 24h
       DEBUG: true
-      API_SECRET: 1234567891234567
+      API_JWT_SECRET: 1234567891234567
     labels:
       proxy.exclude: true
       proxy.#1.healthcheck.disable: true
     ipc: host
     network_mode: host
     volumes:
+      - ./bin/godoxy:/app/run:ro
       - /var/run/docker.sock:/var/run/docker.sock
       - ./dev-data/config:/app/config
       - ./dev-data/certs:/app/certs
@@ -31,6 +36,19 @@ services:
       - ./dev-data/data:/app/data
       - ./dev-data/logs:/app/logs
       - ~/certs/myCA.pem:/etc/ssl/certs/ca.crt:ro
+  parca:
+    image: ghcr.io/parca-dev/parca:v0.24.2
+    container_name: godoxy-parca
+    restart: unless-stopped
+    command: [/parca, --config-path, /parca.yaml]
+    network_mode: host
+    # ports:
+    #   - 7070:7070
+    configs:
+      - source: parca
+        target: /parca.yaml
+    labels:
+      proxy.#1.port: "7070"
   tinyauth:
     image: ghcr.io/steveiliop56/tinyauth:v3
     container_name: tinyauth
@@ -41,3 +59,199 @@ 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:
+        bucket:
+          type: "FILESYSTEM"
+          config:
+            directory: "./data"
+      scrape_configs:
+        - job_name: "parca"
+          scrape_interval: "1s"
+          static_configs:
+            - targets: [ 'localhost:7777' ]

go.mod

@@ -1,254 +1,190 @@
-module github.com/yusing/go-proxy
+module github.com/yusing/godoxy
 
-go 1.25.1
+go 1.25.5
 
-replace github.com/yusing/go-proxy/agent => ./agent
-
-replace github.com/yusing/go-proxy/internal/dnsproviders => ./internal/dnsproviders
-
-replace github.com/yusing/go-proxy/internal/utils => ./internal/utils
-
-replace github.com/coreos/go-oidc/v3 => github.com/godoxy-app/go-oidc/v3 v3.0.0-20250816044348-0630187cb14b
-
-replace github.com/shirou/gopsutil/v4 => github.com/godoxy-app/gopsutil/v4 v4.0.0-20250816043325-ee003f88b84d
+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 v1.10.3 // parsing HTML for extract fav icon
-	github.com/coreos/go-oidc/v3 v3.15.0 // oidc authentication
-	github.com/docker/docker v28.4.0+incompatible // docker daemon
+	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/go-acme/lego/v4 v4.26.0 // acme client
-	github.com/go-playground/validator/v10 v10.27.0 // validator
+	github.com/gin-gonic/gin v1.11.0 // api server
+	github.com/go-acme/lego/v4 v4.31.0 // 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 v2.7.2 // 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/puzpuzpuz/xsync/v4 v4.1.0 // lock free map for concurrent operations
+	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/shirou/gopsutil/v4 v4.25.8 // system info metrics
 	github.com/vincent-petithory/dataurl v1.0.0 // data url for fav icon
-	golang.org/x/crypto v0.42.0 // encrypting password with bcrypt
-	golang.org/x/net v0.44.0 // HTTP header utilities
-	golang.org/x/oauth2 v0.31.0 // oauth2 authentication
-	golang.org/x/sync v0.17.0
-	golang.org/x/time v0.13.0 // time utilities
+	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/docker/cli v28.4.0+incompatible
-	github.com/goccy/go-yaml v1.18.0 // yaml parsing for different config files
-	github.com/golang-jwt/jwt/v5 v5.3.0
-	github.com/luthermonson/go-proxmox v0.2.3
-	github.com/oschwald/maxminddb-golang v1.13.1
-	github.com/quic-go/quic-go v0.54.0
-	github.com/samber/slog-zerolog/v2 v2.7.3
-	github.com/spf13/afero v1.15.0
-	github.com/stretchr/testify v1.11.1
-	github.com/yusing/go-proxy/agent v0.0.0-20250913143824-493c0afdface
-	github.com/yusing/go-proxy/internal/dnsproviders v0.0.0-20250913143824-493c0afdface
-	github.com/yusing/go-proxy/internal/utils v0.0.0
+	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 v29.1.3+incompatible // needs docker/cli/cli/connhelper connection helper for docker client
+	github.com/goccy/go-yaml v1.19.2 // yaml parsing for different config files
+	github.com/golang-jwt/jwt/v5 v5.3.0 // jwt authentication
+	github.com/luthermonson/go-proxmox v0.3.2 // 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 v0.58.0 // 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 v1.69.0 // fast http for health check
+	github.com/yusing/ds v0.3.1 // data structures and algorithms
+	github.com/yusing/godoxy/agent v0.0.0-20260109022755-4275cdae3854
+	github.com/yusing/godoxy/internal/dnsproviders v0.0.0-20260109022755-4275cdae3854
+	github.com/yusing/gointernals v0.1.16
+	github.com/yusing/goutils v0.7.0
+	github.com/yusing/goutils/http/reverseproxy v0.0.0-20260109021609-78fda75d1e58
+	github.com/yusing/goutils/http/websocket v0.0.0-20260109021609-78fda75d1e58
+	github.com/yusing/goutils/server v0.0.0-20260109021609-78fda75d1e58
 )
 
 require (
-	cloud.google.com/go/auth v0.16.5 // 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 v0.8.0 // indirect
-	github.com/AdamSLevy/jsonrpc2/v14 v14.1.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.11.0 // indirect
+	cloud.google.com/go/compute/metadata v0.9.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/dns/armdns v1.2.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/privatedns/armprivatedns v1.3.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/resourcegraph/armresourcegraph v0.9.0 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
-	github.com/OpenDNS/vegadns2client v0.0.0-20180418235048-a3fa4a771d87 // indirect
 	github.com/andybalholm/cascadia v1.3.3 // indirect
-	github.com/aws/aws-sdk-go-v2 v1.39.0 // indirect
-	github.com/aws/aws-sdk-go-v2/config v1.31.8 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.18.12 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.7 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.7 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.7 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.3 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.1 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.7 // indirect
-	github.com/aws/aws-sdk-go-v2/service/lightsail v1.48.4 // indirect
-	github.com/aws/aws-sdk-go-v2/service/route53 v1.58.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.29.3 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.34.4 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.38.4 // indirect
-	github.com/aws/smithy-go v1.23.0 // indirect
 	github.com/benbjohnson/clock v1.3.5 // indirect
-	github.com/boombuler/barcode v1.1.0 // indirect
 	github.com/buger/goterm v1.0.4 // indirect
-	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/diskfs/go-diskfs v1.7.0 // indirect
 	github.com/distribution/reference v0.6.0 // indirect
 	github.com/djherbis/times v1.6.0 // indirect
 	github.com/docker/go-connections v0.6.0
 	github.com/docker/go-units v0.5.0 // indirect
-	github.com/ebitengine/purego v0.8.4 // indirect
-	github.com/exoscale/egoscale/v3 v3.1.26 // indirect
-	github.com/fatih/structs v1.1.0 // indirect
+	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.10 // indirect
-	github.com/go-errors/errors v1.5.1 // indirect
-	github.com/go-jose/go-jose/v4 v4.1.2 // 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
-	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-resty/resty/v2 v2.16.5 // indirect
-	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
-	github.com/gofrs/flock v0.12.1 // indirect
-	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/gofrs/flock v0.13.0 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
-	github.com/googleapis/gax-go/v2 v2.15.0 // indirect
-	github.com/gophercloud/gophercloud v1.14.1 // indirect
-	github.com/gophercloud/utils v0.0.0-20231010081019-80377eca5d56 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.9 // 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/hashicorp/go-uuid v1.0.3 // indirect
-	github.com/iij/doapi v0.0.0-20190504054126-0bbf12d6d7df // indirect
-	github.com/infobloxopen/infoblox-go-client/v2 v2.10.0 // indirect
 	github.com/jinzhu/copier v0.4.0 // indirect
 	github.com/json-iterator/go v1.1.13-0.20220915233716-71ac16282d12 // indirect
-	github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213 // indirect
-	github.com/kolo/xmlrpc v0.0.0-20220921171641-a4b6fa1dd06b // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
-	github.com/labbsr0x/bindman-dns-webhook v1.0.2 // indirect
-	github.com/labbsr0x/goh v1.0.1 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/linode/linodego v1.57.0 // indirect
-	github.com/liquidweb/liquidweb-cli v0.7.0 // indirect
-	github.com/liquidweb/liquidweb-go v1.6.4 // indirect
-	github.com/lufia/plan9stats v0.0.0-20250827001030-24949be3fa54 // indirect
 	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/mimuret/golang-iij-dpf v0.9.1 // indirect
+	github.com/miekg/dns v1.1.69 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/nrdcg/auroradns v1.1.0 // indirect
-	github.com/nrdcg/bunny-go v0.0.0-20250327222614-988a091fc7ea // indirect
-	github.com/nrdcg/desec v0.11.0 // indirect
-	github.com/nrdcg/freemyip v0.3.0 // indirect
 	github.com/nrdcg/goacmedns v0.2.0 // indirect
-	github.com/nrdcg/goinwx v0.11.0 // indirect
-	github.com/nrdcg/mailinabox v0.2.0 // indirect
-	github.com/nrdcg/nodion v0.1.0 // indirect
 	github.com/nrdcg/porkbun v0.4.0 // indirect
-	github.com/nzdjb/go-metaname v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/ovh/go-ovh v1.9.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
-	github.com/peterhellberg/link v1.2.0 // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
-	github.com/pkg/errors v0.9.1 // 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/pquerna/otp v1.5.0 // indirect
-	github.com/quic-go/qpack v0.5.1 // indirect
-	github.com/regfish/regfish-dnsapi-go v0.1.1 // indirect
-	github.com/sacloud/api-client-go v0.3.3 // indirect
-	github.com/sacloud/go-http v0.1.9 // indirect
-	github.com/sacloud/iaas-api-go v1.17.1 // indirect
-	github.com/sacloud/packages-go v0.0.11 // indirect
-	github.com/sagikazarmark/locafero v0.11.0 // indirect
-	github.com/samber/lo v1.51.0 // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
+	github.com/samber/lo v1.52.0 // indirect
 	github.com/samber/slog-common v0.19.0 // indirect
-	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.34 // indirect
-	github.com/selectel/domains-go v1.1.0 // indirect
-	github.com/shopspring/decimal v1.4.0 // indirect
+	github.com/samber/slog-zerolog/v2 v2.9.0 // 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/smartystreets/go-aws-auth v0.0.0-20180515143844-0c1422d1fdb9 // indirect
-	github.com/softlayer/softlayer-go v1.2.1 // indirect
-	github.com/softlayer/xmlrpc v0.0.0-20200409220501-5f089df7cb7e // indirect
 	github.com/sony/gobreaker v1.0.0 // indirect
-	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
-	github.com/spf13/cast v1.10.0 // indirect
-	github.com/spf13/pflag v1.0.10 // indirect
-	github.com/spf13/viper v1.21.0 // indirect
-	github.com/subosito/gotenv v1.6.0 // indirect
-	github.com/tklauser/go-sysconf v0.3.15 // indirect
-	github.com/tklauser/numcpus v0.10.0 // indirect
-	github.com/transip/gotransip/v6 v6.26.0 // indirect
-	github.com/ultradns/ultradns-go-sdk v1.8.1-20250722213956-faef419 // indirect
-	github.com/vinyldns/go-vinyldns v0.9.16 // indirect
-	github.com/volcengine/volc-sdk-golang v1.0.219 // indirect
-	github.com/vultr/govultr/v3 v3.23.0 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
-	github.com/yusufpapurcu/wmi v1.2.4 // indirect
-	go.opentelemetry.io/auto/sdk v1.2.0 // 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/auto/sdk v1.2.1 // 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/mock v0.6.0 // indirect
 	go.uber.org/ratelimit v0.3.1 // indirect
-	golang.org/x/mod v0.28.0 // indirect
-	golang.org/x/sys v0.36.0 // indirect
-	golang.org/x/text v0.29.0 // indirect
-	golang.org/x/tools v0.37.0 // indirect
-	google.golang.org/api v0.249.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250908214217-97024824d090 // indirect
-	google.golang.org/grpc v1.75.1 // indirect
-	google.golang.org/protobuf v1.36.9 // indirect
+	golang.org/x/mod v0.31.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	golang.org/x/tools v0.40.0 // indirect
+	google.golang.org/api v0.259.0 // 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/ns1/ns1-go.v2 v2.15.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
-require (
-	github.com/gin-gonic/gin v1.10.1
-	github.com/yusing/ds v0.1.0
-)
-
 require (
 	github.com/akamai/AkamaiOPEN-edgegrid-golang/v11 v11.1.0 // indirect
-	github.com/aziontech/azionapi-go-sdk v0.142.0 // indirect
-	github.com/bytedance/gopkg v0.1.3 // indirect
-	github.com/bytedance/sonic v1.14.1 // indirect
-	github.com/bytedance/sonic/loader v0.3.0 // 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/containerd/log v0.1.0 // indirect
-	github.com/dnsimple/dnsimple-go/v4 v4.0.0 // 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 v2.17.1 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/klauspost/compress v1.18.0 // 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/moby/sys/atomicwriter v0.1.0 // indirect
-	github.com/moby/term v0.5.2 // indirect
-	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/namedotcom/go/v4 v4.0.2 // indirect
-	github.com/nrdcg/oci-go-sdk/common/v1065 v1065.100.0 // indirect
-	github.com/nrdcg/oci-go-sdk/dns/v1065 v1065.100.0 // indirect
-	github.com/onsi/ginkgo/v2 v2.25.1 // indirect
-	github.com/onsi/gomega v1.38.1 // indirect
+	github.com/kolo/xmlrpc v0.0.0-20220921171641-a4b6fa1dd06b // indirect
+	github.com/linode/linodego v1.64.0 // indirect
+	github.com/lufia/plan9stats v0.0.0-20251013123823-9fd1530e3ec3 // 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/selectel/go-selvpcclient/v4 v4.1.0 // indirect
-	github.com/stretchr/objx v0.5.2 // 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
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.3.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.37.0 // indirect
-	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/arch v0.21.0 // indirect
-	google.golang.org/genproto v0.0.0-20250908214217-97024824d090 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250826171959-ef028d996bc1 // indirect
+	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 v3.26.1 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
+	golang.org/x/arch v0.23.0 // indirect
 )

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/acl/config.go

@@ -1,17 +1,22 @@
 package acl
 
 import (
+	"fmt"
+	"math"
 	"net"
+	"sync/atomic"
 	"time"
 
 	"github.com/puzpuzpuz/xsync/v4"
+	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/internal/common"
-	"github.com/yusing/go-proxy/internal/gperr"
-	"github.com/yusing/go-proxy/internal/logging/accesslog"
-	"github.com/yusing/go-proxy/internal/maxmind"
-	"github.com/yusing/go-proxy/internal/task"
-	"github.com/yusing/go-proxy/internal/utils"
+	"github.com/yusing/godoxy/internal/common"
+	"github.com/yusing/godoxy/internal/logging/accesslog"
+	"github.com/yusing/godoxy/internal/maxmind"
+	"github.com/yusing/godoxy/internal/notif"
+	gperr "github.com/yusing/goutils/errs"
+	strutils "github.com/yusing/goutils/strings"
+	"github.com/yusing/goutils/task"
 )
 
 type Config struct {
@@ -21,16 +26,42 @@ type Config struct {
 	Deny       Matchers                   `json:"deny"`
 	Log        *accesslog.ACLLoggerConfig `json:"log"`
 
+	Notify struct {
+		To             []string      `json:"to"`              // list of notification providers
+		Interval       time.Duration `json:"interval"`        // interval between notifications
+		IncludeAllowed *bool         `json:"include_allowed"` // default: false
+	} `json:"notify"`
+
 	config
 	valErr gperr.Error
 }
 
+const defaultNotifyInterval = 1 * time.Minute
+
 type config struct {
 	defaultAllow bool
 	allowLocal   bool
 	ipCache      *xsync.Map[string, *checkCache]
-	logAllowed   bool
-	logger       *accesslog.AccessLogger
+
+	// will be nil if Notify.To is empty
+	// these are per IP, reset every Notify.Interval
+	allowedCount map[string]uint32
+	blockedCount map[string]uint32
+
+	// these are total, never reset
+	totalAllowedCount uint64
+	totalBlockedCount uint64
+
+	logAllowed bool
+	// will be nil if Log is nil
+	logger accesslog.AccessLogger
+
+	// will never tick if Notify.To is empty
+	notifyTicker  *time.Ticker
+	notifyAllowed bool
+
+	// will be nil if both Log and Notify.To are empty
+	logNotifyCh chan ipLog
 }
 
 type checkCache struct {
@@ -39,10 +70,18 @@ type checkCache struct {
 	created time.Time
 }
 
+type ipLog struct {
+	info    *maxmind.IPInfo
+	allowed bool
+}
+
+// could be nil
+var ActiveConfig atomic.Pointer[Config]
+
 const cacheTTL = 1 * time.Minute
 
 func (c *checkCache) Expired() bool {
-	return c.created.Add(cacheTTL).Before(utils.TimeNow())
+	return c.created.Add(cacheTTL).Before(time.Now())
 }
 
 // TODO: add stats
@@ -69,6 +108,10 @@ func (c *Config) Validate() gperr.Error {
 		c.allowLocal = true
 	}
 
+	if c.Notify.Interval < 0 {
+		c.Notify.Interval = defaultNotifyInterval
+	}
+
 	if c.Log != nil {
 		c.logAllowed = c.Log.LogAllowed
 	}
@@ -79,6 +122,12 @@ func (c *Config) Validate() gperr.Error {
 	}
 
 	c.ipCache = xsync.NewMap[string, *checkCache]()
+
+	if c.Notify.IncludeAllowed != nil {
+		c.notifyAllowed = *c.Notify.IncludeAllowed
+	} else {
+		c.notifyAllowed = false
+	}
 	return nil
 }
 
@@ -86,7 +135,7 @@ func (c *Config) Valid() bool {
 	return c != nil && c.valErr == nil
 }
 
-func (c *Config) Start(parent *task.Task) gperr.Error {
+func (c *Config) Start(parent task.Parent) gperr.Error {
 	if c.Log != nil {
 		logger, err := accesslog.NewAccessLogger(parent, c.Log)
 		if err != nil {
@@ -97,6 +146,23 @@ func (c *Config) Start(parent *task.Task) gperr.Error {
 	if c.valErr != nil {
 		return c.valErr
 	}
+
+	if c.needLogOrNotify() {
+		c.logNotifyCh = make(chan ipLog, 100)
+	}
+
+	if c.needNotify() {
+		c.allowedCount = make(map[string]uint32)
+		c.blockedCount = make(map[string]uint32)
+		c.notifyTicker = time.NewTicker(c.Notify.Interval)
+	} else {
+		c.notifyTicker = time.NewTicker(time.Duration(math.MaxInt64)) // never tick
+	}
+
+	if c.needLogOrNotify() {
+		go c.logNotifyLoop(parent)
+	}
+
 	log.Info().
 		Str("default", c.Default).
 		Bool("allow_local", c.allowLocal).
@@ -113,16 +179,93 @@ func (c *Config) cacheRecord(info *maxmind.IPInfo, allow bool) {
 	c.ipCache.Store(info.Str, &checkCache{
 		IPInfo:  info,
 		allow:   allow,
-		created: utils.TimeNow(),
+		created: time.Now(),
 	})
 }
 
-func (c *config) log(info *maxmind.IPInfo, allowed bool) {
-	if c.logger == nil {
-		return
+func (c *Config) needLogOrNotify() bool {
+	return c.needLog() || c.needNotify()
+}
+
+func (c *Config) needLog() bool {
+	return c.logger != nil
+}
+
+func (c *Config) needNotify() bool {
+	return len(c.Notify.To) > 0
+}
+
+func (c *Config) getCachedCity(ip string) string {
+	record, ok := c.ipCache.Load(ip)
+	if ok {
+		if record.City != nil {
+			if record.City.Country.IsoCode != "" {
+				return record.City.Country.IsoCode
+			}
+			return record.City.Location.TimeZone
+		}
 	}
-	if !allowed || c.logAllowed {
-		c.logger.LogACL(info, !allowed)
+	return "unknown location"
+}
+
+func (c *Config) logNotifyLoop(parent task.Parent) {
+	defer c.notifyTicker.Stop()
+
+	for {
+		select {
+		case <-parent.Context().Done():
+			return
+		case log := <-c.logNotifyCh:
+			if c.logger != nil {
+				if !log.allowed || c.logAllowed {
+					c.logger.LogACL(log.info, !log.allowed)
+				}
+			}
+			if c.needNotify() {
+				if log.allowed {
+					if c.notifyAllowed {
+						c.allowedCount[log.info.Str]++
+						c.totalAllowedCount++
+					}
+				} else {
+					c.blockedCount[log.info.Str]++
+					c.totalBlockedCount++
+				}
+			}
+		case <-c.notifyTicker.C: // will never tick when notify is disabled
+			total := len(c.allowedCount) + len(c.blockedCount)
+			if total == 0 {
+				continue
+			}
+			total++
+			fieldsBody := make(notif.ListBody, total)
+			i := 0
+			fieldsBody[i] = fmt.Sprintf("Total: allowed %d, blocked %d", c.totalAllowedCount, c.totalBlockedCount)
+			i++
+			for ip, count := range c.allowedCount {
+				fieldsBody[i] = fmt.Sprintf("%s (%s): allowed %d times", ip, c.getCachedCity(ip), count)
+				i++
+			}
+			for ip, count := range c.blockedCount {
+				fieldsBody[i] = fmt.Sprintf("%s (%s): blocked %d times", ip, c.getCachedCity(ip), count)
+				i++
+			}
+			notif.Notify(&notif.LogMessage{
+				Level: zerolog.InfoLevel,
+				Title: "ACL Summary for last " + strutils.FormatDuration(c.Notify.Interval),
+				Body:  fieldsBody,
+				To:    c.Notify.To,
+			})
+			clear(c.allowedCount)
+			clear(c.blockedCount)
+		}
+	}
+}
+
+// log and notify if needed
+func (c *Config) logAndNotify(info *maxmind.IPInfo, allowed bool) {
+	if c.logNotifyCh != nil {
+		c.logNotifyCh <- ipLog{info: info, allowed: allowed}
 	}
 }
 
@@ -137,30 +280,30 @@ func (c *Config) IPAllowed(ip net.IP) bool {
 	}
 
 	if c.allowLocal && ip.IsPrivate() {
-		c.log(&maxmind.IPInfo{IP: ip, Str: ip.String()}, true)
+		c.logAndNotify(&maxmind.IPInfo{IP: ip, Str: ip.String()}, true)
 		return true
 	}
 
 	ipStr := ip.String()
 	record, ok := c.ipCache.Load(ipStr)
 	if ok && !record.Expired() {
-		c.log(record.IPInfo, record.allow)
+		c.logAndNotify(record.IPInfo, record.allow)
 		return record.allow
 	}
 
 	ipAndStr := &maxmind.IPInfo{IP: ip, Str: ipStr}
 	if c.Allow.Match(ipAndStr) {
-		c.log(ipAndStr, true)
+		c.logAndNotify(ipAndStr, true)
 		c.cacheRecord(ipAndStr, true)
 		return true
 	}
 	if c.Deny.Match(ipAndStr) {
-		c.log(ipAndStr, false)
+		c.logAndNotify(ipAndStr, false)
 		c.cacheRecord(ipAndStr, false)
 		return false
 	}
 
-	c.log(ipAndStr, c.defaultAllow)
+	c.logAndNotify(ipAndStr, c.defaultAllow)
 	c.cacheRecord(ipAndStr, c.defaultAllow)
 	return c.defaultAllow
 }

internal/acl/matcher.go

@@ -4,8 +4,8 @@ import (
 	"net"
 	"strings"
 
-	"github.com/yusing/go-proxy/internal/gperr"
-	"github.com/yusing/go-proxy/internal/maxmind"
+	"github.com/yusing/godoxy/internal/maxmind"
+	gperr "github.com/yusing/goutils/errs"
 )
 
 type MatcherFunc func(*maxmind.IPInfo) bool

internal/acl/matcher_test.go

@@ -5,8 +5,8 @@ import (
 	"reflect"
 	"testing"
 
-	maxmind "github.com/yusing/go-proxy/internal/maxmind/types"
-	"github.com/yusing/go-proxy/internal/serialization"
+	maxmind "github.com/yusing/godoxy/internal/maxmind/types"
+	"github.com/yusing/godoxy/internal/serialization"
 )
 
 func TestMatchers(t *testing.T) {

internal/acl/tcp_listener.go

@@ -1,6 +1,7 @@
 package acl
 
 import (
+	"errors"
 	"io"
 	"net"
 	"time"
@@ -54,6 +55,21 @@ func (s *TCPListener) Accept() (net.Conn, error) {
 	return c, nil
 }
 
+type tcpListener interface {
+	SetDeadline(t time.Time) error
+}
+
+var _ tcpListener = (*net.TCPListener)(nil)
+
+func (s *TCPListener) SetDeadline(t time.Time) error {
+	switch lis := s.lis.(type) {
+	case tcpListener:
+		return lis.SetDeadline(t)
+	default:
+		return errors.New("not a TCPListener")
+	}
+}
+
 func (s *TCPListener) Close() error {
 	return s.lis.Close()
 }

internal/acl/udp_listener.go

@@ -1,6 +1,7 @@
 package acl
 
 import (
+	"errors"
 	"net"
 	"time"
 )
@@ -74,6 +75,31 @@ func (s *UDPListener) SetWriteDeadline(t time.Time) error {
 	return s.lis.SetWriteDeadline(t)
 }
 
+type udpListener interface {
+	SetReadBuffer(bytes int) error
+	SetWriteBuffer(bytes int) error
+}
+
+var _ udpListener = (*net.UDPConn)(nil)
+
+func (s *UDPListener) SetReadBuffer(bytes int) error {
+	switch lis := s.lis.(type) {
+	case udpListener:
+		return lis.SetReadBuffer(bytes)
+	default:
+		return errors.New("not a UDPConn")
+	}
+}
+
+func (s *UDPListener) SetWriteBuffer(bytes int) error {
+	switch lis := s.lis.(type) {
+	case udpListener:
+		return lis.SetWriteBuffer(bytes)
+	default:
+		return errors.New("not a UDPConn")
+	}
+}
+
 func (s *UDPListener) Close() error {
 	return s.lis.Close()
 }

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

@@ -0,0 +1,96 @@
+package agentpool
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/bytedance/sonic"
+	"github.com/gorilla/websocket"
+	"github.com/valyala/fasthttp"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/goutils/http/reverseproxy"
+)
+
+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 *Agent) Forward(req *http.Request, endpoint string) (*http.Response, error) {
+	req.URL.Host = agent.AgentHost
+	req.URL.Scheme = "https"
+	req.URL.Path = agent.APIEndpointBase + endpoint
+	req.RequestURI = ""
+	resp, err := cfg.httpClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+type HealthCheckResponse struct {
+	Healthy bool          `json:"healthy"`
+	Detail  string        `json:"detail"`
+	Latency time.Duration `json:"latency"`
+}
+
+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(agent.APIBaseURL + agent.EndpointHealth + "?" + query)
+	req.Header.SetMethod(fasthttp.MethodGet)
+	req.Header.Set("Accept-Encoding", "identity")
+	req.SetConnectionClose()
+
+	start := time.Now()
+	err = cfg.fasthttpHcClient.DoTimeout(req, resp, timeout)
+	ret.Latency = time.Since(start)
+	if err != nil {
+		return ret, err
+	}
+
+	if status := resp.StatusCode(); status != http.StatusOK {
+		ret.Detail = fmt.Sprintf("HTTP %d %s", status, resp.Body())
+		return ret, nil
+	} else {
+		err = sonic.Unmarshal(resp.Body(), &ret)
+		if err != nil {
+			return ret, err
+		}
+	}
+	return ret, nil
+}
+
+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, agent.APIBaseURL+endpoint, http.Header{
+		"Host": {agent.AgentHost},
+	})
+}
+
+// ReverseProxy reverse proxies the request to the agent
+//
+// 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 *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 = ""
+	rp.ServeHTTP(w, req)
+}

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/handler.go

@@ -2,25 +2,25 @@ package api
 
 import (
 	"net/http"
-	"strconv"
-	"time"
+	"reflect"
 
 	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/codec/json"
 	"github.com/gorilla/websocket"
 	"github.com/rs/zerolog/log"
-	apitypes "github.com/yusing/go-proxy/internal/api/types"
-	apiV1 "github.com/yusing/go-proxy/internal/api/v1"
-	agentApi "github.com/yusing/go-proxy/internal/api/v1/agent"
-	authApi "github.com/yusing/go-proxy/internal/api/v1/auth"
-	certApi "github.com/yusing/go-proxy/internal/api/v1/cert"
-	dockerApi "github.com/yusing/go-proxy/internal/api/v1/docker"
-	fileApi "github.com/yusing/go-proxy/internal/api/v1/file"
-	homepageApi "github.com/yusing/go-proxy/internal/api/v1/homepage"
-	metricsApi "github.com/yusing/go-proxy/internal/api/v1/metrics"
-	routeApi "github.com/yusing/go-proxy/internal/api/v1/route"
-	"github.com/yusing/go-proxy/internal/auth"
-	"github.com/yusing/go-proxy/internal/common"
-	"github.com/yusing/go-proxy/internal/gperr"
+	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/common"
+	apitypes "github.com/yusing/goutils/apitypes"
+	gperr "github.com/yusing/goutils/errs"
 )
 
 // @title           GoDoxy API
@@ -45,6 +45,9 @@ func NewHandler() *gin.Engine {
 	r := gin.New()
 	r.Use(ErrorHandler())
 	r.Use(ErrorLoggingMiddleware())
+	r.Use(NoCache())
+
+	log.Debug().Msg("gin codec json.API: " + reflect.TypeOf(json.API).Name())
 
 	r.GET("/api/v1/version", apiV1.Version)
 
@@ -69,7 +72,7 @@ func NewHandler() *gin.Engine {
 	}
 	{
 		// enable cache for favicon
-		v1.GET("/favicon", apiV1.FavIcon).Use(Cache(time.Hour * 24))
+		v1.GET("/favicon", apiV1.FavIcon)
 		v1.GET("/health", apiV1.Health)
 		v1.GET("/icons", apiV1.Icons)
 		v1.POST("/reload", apiV1.Reload)
@@ -81,6 +84,7 @@ func NewHandler() *gin.Engine {
 			route.GET("/:which", routeApi.Route)
 			route.GET("/providers", routeApi.Providers)
 			route.GET("/by_provider", routeApi.ByProvider)
+			route.POST("/playground", routeApi.Playground)
 		}
 
 		file := v1.Group("/file")
@@ -139,15 +143,13 @@ func NewHandler() *gin.Engine {
 		}
 	}
 
-	// disable cache by default
-	r.Use(NoCache())
 	return r
 }
 
 func NoCache() gin.HandlerFunc {
 	return func(c *gin.Context) {
-		// skip cache if Cache-Control header is set or if caching is explicitly enabled
-		if !c.GetBool("cache_enabled") && c.Writer.Header().Get("Cache-Control") == "" {
+		// skip cache if Cache-Control header is set
+		if c.Writer.Header().Get("Cache-Control") == "" {
 			c.Header("Cache-Control", "no-cache, no-store, must-revalidate")
 			c.Header("Pragma", "no-cache")
 			c.Header("Expires", "0")
@@ -156,20 +158,6 @@ func NoCache() gin.HandlerFunc {
 	}
 }
 
-func Cache(duration time.Duration) gin.HandlerFunc {
-	return func(c *gin.Context) {
-		// Signal to NoCache middleware that caching is intended
-		c.Set("cache_enabled", true)
-		// skip cache if Cache-Control header is set
-		if c.Writer.Header().Get("Cache-Control") == "" {
-			c.Header("Cache-Control", "public, max-age="+strconv.FormatFloat(duration.Seconds(), 'f', 0, 64)+", immutable")
-			c.Header("Pragma", "public")
-			c.Header("Expires", time.Now().Add(duration).Format(time.RFC1123))
-		}
-		c.Next()
-	}
-}
-
 func AuthMiddleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		err := auth.GetDefaultAuth().CheckToken(c.Request)

internal/api/types/error.go

@@ -1,55 +0,0 @@
-package apitypes
-
-import (
-	"errors"
-
-	"github.com/yusing/go-proxy/internal/gperr"
-)
-
-type ErrorResponse struct {
-	Message string `json:"message"`
-	Error   string `json:"error,omitempty" extensions:"x-nullable"`
-} // @name ErrorResponse
-
-type serverError struct {
-	Message string
-	Err     error
-}
-
-// Error returns a generic error response
-func Error(message string, err ...error) ErrorResponse {
-	if len(err) > 0 {
-		var gpErr gperr.Error
-		if errors.As(err[0], &gpErr) {
-			return ErrorResponse{
-				Message: message,
-				Error:   string(gpErr.Plain()),
-			}
-		}
-		return ErrorResponse{
-			Message: message,
-			Error:   err[0].Error(),
-		}
-	}
-	return ErrorResponse{
-		Message: message,
-	}
-}
-
-func InternalServerError(err error, message string) error {
-	return serverError{
-		Message: message,
-		Err:     err,
-	}
-}
-
-func (e serverError) Error() string {
-	if e.Err != nil {
-		return e.Message + ": " + e.Err.Error()
-	}
-	return e.Message
-}
-
-func (e serverError) Unwrap() error {
-	return e.Err
-}

internal/api/types/query.go

@@ -1,29 +0,0 @@
-package apitypes
-
-type QueryOptions struct {
-	Limit   int                 `binding:"required,min=1,max=20" form:"limit"`
-	Offset  int                 `binding:"omitempty,min=0" form:"offset"`
-	OrderBy QueryOrder          `binding:"omitempty,oneof=created_at updated_at" form:"order_by"`
-	Order   QueryOrderDirection `binding:"omitempty,oneof=asc desc" form:"order"`
-}
-
-type QueryOrder string
-
-const (
-	QueryOrderCreatedAt QueryOrder = "created_at"
-	QueryOrderUpdatedAt QueryOrder = "updated_at"
-)
-
-type QueryOrderDirection string
-
-const (
-	QueryOrderDirectionAsc  QueryOrderDirection = "asc"
-	QueryOrderDirectionDesc QueryOrderDirection = "desc"
-)
-
-type QueryResponse struct {
-	Total   int64 `json:"total"`
-	Limit   int   `json:"limit"`
-	Offset  int   `json:"offset"`
-	HasMore bool  `json:"has_more"`
-}

internal/api/types/success.go

@@ -1,18 +0,0 @@
-package apitypes
-
-type SuccessResponse struct {
-	Message string         `json:"message"`
-	Details map[string]any `json:"details,omitempty" extensions:"x-nullable"`
-} // @name SuccessResponse
-
-func Success(message string, extra ...map[string]any) SuccessResponse {
-	if len(extra) > 0 {
-		return SuccessResponse{
-			Message: message,
-			Details: extra[0],
-		}
-	}
-	return SuccessResponse{
-		Message: message,
-	}
-}

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/common.go

@@ -7,7 +7,7 @@ import (
 	"time"
 
 	"github.com/rs/zerolog/log"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/agent/pkg/agent"
 )
 
 type PEMPairResponse struct {

internal/api/v1/agent/create.go

@@ -8,8 +8,9 @@ import (
 	_ "embed"
 
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	apitypes "github.com/yusing/go-proxy/internal/api/types"
+	"github.com/yusing/godoxy/agent/pkg/agent"
+	"github.com/yusing/godoxy/internal/agentpool"
+	apitypes "github.com/yusing/goutils/apitypes"
 )
 
 type NewAgentRequest struct {
@@ -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

@@ -5,9 +5,11 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/internal/net/gphttp/httpheaders"
-	"github.com/yusing/go-proxy/internal/net/gphttp/websocket"
+	"github.com/yusing/godoxy/internal/agentpool"
+	"github.com/yusing/goutils/http/httpheaders"
+	"github.com/yusing/goutils/http/websocket"
+
+	_ "github.com/yusing/goutils/apitypes"
 )
 
 // @x-id				"list"
@@ -17,16 +19,15 @@ import (
 // @Tags			agent,websocket
 // @Accept			json
 // @Produce		json
-// @Success		200	{array}		Agent
+// @Success		200	{array}		agent.AgentConfig
 // @Failure		403	{object}	apitypes.ErrorResponse
-// @Failure		500	{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

@@ -6,10 +6,13 @@ import (
 	"os"
 
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/agent/pkg/agent"
-	"github.com/yusing/go-proxy/agent/pkg/certs"
-	. "github.com/yusing/go-proxy/internal/api/types"
-	config "github.com/yusing/go-proxy/internal/config/types"
+	"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"
+	gperr "github.com/yusing/goutils/errs"
 )
 
 type VerifyNewAgentRequest struct {
@@ -35,44 +38,88 @@ type VerifyNewAgentRequest struct {
 func Verify(c *gin.Context) {
 	var request VerifyNewAgentRequest
 	if err := c.ShouldBindJSON(&request); err != nil {
-		c.JSON(http.StatusBadRequest, Error("invalid request", err))
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid request", err))
 		return
 	}
 
 	filename, ok := certs.AgentCertsFilepath(request.Host)
 	if !ok {
-		c.JSON(http.StatusBadRequest, Error("invalid host", nil))
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid host", nil))
 		return
 	}
 
 	ca, err := fromEncryptedPEMPairResponse(request.CA)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, Error("invalid CA", err))
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid CA", err))
 		return
 	}
 
 	client, err := fromEncryptedPEMPairResponse(request.Client)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, Error("invalid client", err))
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid client", err))
 		return
 	}
 
-	nRoutesAdded, err := config.GetInstance().VerifyNewAgent(request.Host, ca, client, request.ContainerRuntime)
+	nRoutesAdded, err := verifyNewAgent(request.Host, ca, client, request.ContainerRuntime)
 	if err != nil {
-		c.JSON(http.StatusBadRequest, Error("invalid request", err))
+		c.JSON(http.StatusBadRequest, apitypes.Error("invalid request", err))
 		return
 	}
 
 	zip, err := certs.ZipCert(ca.Cert, client.Cert, client.Key)
 	if err != nil {
-		c.Error(InternalServerError(err, "failed to zip certs"))
+		c.Error(apitypes.InternalServerError(err, "failed to zip certs"))
 		return
 	}
 
 	if err := os.WriteFile(filename, zip, 0o600); err != nil {
-		c.Error(InternalServerError(err, "failed to write certs"))
+		c.Error(apitypes.InternalServerError(err, "failed to write certs"))
 		return
 	}
 
-	c.JSON(http.StatusOK, Success(fmt.Sprintf("Added %d routes", nRoutesAdded)))
+	c.JSON(http.StatusOK, apitypes.Success(fmt.Sprintf("Added %d routes", nRoutesAdded)))
+}
+
+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
+
+	// 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 initialize agent config")
+	}
+
+	provider := provider.NewAgentProvider(&agentCfg)
+	if _, loaded := cfgState.LoadOrStoreProvider(provider.String(), provider); loaded {
+		return 0, gperr.Errorf("provider %s already exists", provider.String())
+	}
+
+	// agent must be added before loading routes
+	added := agentpool.Add(&agentCfg)
+	if !added {
+		return 0, errAgentAlreadyExists
+	}
+	err = provider.LoadRoutes()
+	if err != nil {
+		cfgState.DeleteProvider(provider.String())
+		agentpool.Remove(&agentCfg)
+		return 0, gperr.Wrap(err, "failed to load routes")
+	}
+
+	return provider.NumRoutes(), nil
 }

internal/api/v1/auth/callback.go

@@ -3,7 +3,7 @@ package auth
 
 import (
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/internal/auth"
+	"github.com/yusing/godoxy/internal/auth"
 )
 
 // @x-id				"callback"

internal/api/v1/auth/check.go

@@ -2,7 +2,7 @@ package auth
 
 import (
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/internal/auth"
+	"github.com/yusing/godoxy/internal/auth"
 )
 
 // @x-id	  	"check"

internal/api/v1/auth/login.go

@@ -2,7 +2,7 @@ package auth
 
 import (
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/internal/auth"
+	"github.com/yusing/godoxy/internal/auth"
 )
 
 // @x-id       "login"

internal/api/v1/auth/logout.go

@@ -2,7 +2,7 @@ package auth
 
 import (
 	"github.com/gin-gonic/gin"
-	"github.com/yusing/go-proxy/internal/auth"
+	"github.com/yusing/godoxy/internal/auth"
 )
 
 // @x-id				"logout"

internal/api/v1/cert/info.go

@@ -1,53 +1,41 @@
 package certapi
 
 import (
+	"errors"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
-	apitypes "github.com/yusing/go-proxy/internal/api/types"
-	config "github.com/yusing/go-proxy/internal/config/types"
+	"github.com/yusing/godoxy/internal/autocert"
+	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 := config.GetInstance().AutoCertProvider()
-	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

@@ -6,11 +6,10 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/rs/zerolog/log"
-	apitypes "github.com/yusing/go-proxy/internal/api/types"
-	config "github.com/yusing/go-proxy/internal/config/types"
-	"github.com/yusing/go-proxy/internal/gperr"
-	"github.com/yusing/go-proxy/internal/logging/memlogger"
-	"github.com/yusing/go-proxy/internal/net/gphttp/websocket"
+	"github.com/yusing/godoxy/internal/autocert"
+	"github.com/yusing/godoxy/internal/logging/memlogger"
+	apitypes "github.com/yusing/goutils/apitypes"
+	"github.com/yusing/goutils/http/websocket"
 )
 
 // @x-id				"renew"
@@ -24,7 +23,7 @@ import (
 // @Failure		500	{object}	apitypes.ErrorResponse
 // @Router			/cert/renew [get]
 func Renew(c *gin.Context) {
-	autocert := config.GetInstance().AutoCertProvider()
+	autocert := autocert.ActiveProvider.Load()
 	if autocert == nil {
 		c.JSON(http.StatusNotFound, apitypes.Error("autocert is not enabled"))
 		return
@@ -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())
 }