changed env GOPROXY_*_PORT to GOPROXY_*_ADDR, changed api server default to listen on localhost only, readme update

fix stuck loading in some scenerios for ls-* command line options
renamed ProxyEntry to RawEntry to avoid confusion with src/proxy/entry.go
2026-01-15 08:03:37 +01:00 · 2024-09-22 06:06:24 +08:00 · 2024-09-22 05:01:36 +08:00 · 2024-09-22 04:13:42 +08:00 · 2024-09-22 04:11:02 +08:00 · 2024-09-22 04:00:08 +08:00
98 changed files with 3454 additions and 1644 deletions
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -15,7 +15,7 @@ jobs:
          tags: ${{ github.ref_name }}

      - name: Tag as latest
-        if: startsWith(github.ref, 'refs/tags/v') && !contains(github.ref_name, '-')
+        if: startsWith(github.ref, 'refs/tags/') && !contains(github.ref_name, '-')
        run: |
          docker tag ghcr.io/${{ github.repository }}:${{ github.ref_name }} ghcr.io/${{ github.repository }}:latest
          docker push ghcr.io/${{ github.repository }}:latest
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 compose.yml

-config/
-certs/
+config*/
+certs*/
 bin/

 templates/codemirror/
@@ -13,6 +13,6 @@ log/

 go.work.sum

-!src/config/
+!src/**/

 todo.md
--- a/5
+++ b/5
@@ -2,13 +2,12 @@ FROM golang:1.23.1-alpine AS builder
 COPY src /src
 ENV GOCACHE=/root/.cache/go-build
 WORKDIR /src
-RUN --mount=type=cache,target="/go/pkg/mod" \
-    go mod download
 RUN --mount=type=cache,target="/go/pkg/mod" \
    --mount=type=cache,target="/root/.cache/go-build" \
+    go mod download && \
    CGO_ENABLED=0 GOOS=linux go build -pgo=auto -o go-proxy github.com/yusing/go-proxy

-FROM alpine:latest
+FROM alpine:3.20

 LABEL maintainer="yusing@6uo.me"

--- a/7
+++ b/7
@@ -12,7 +12,7 @@ build:
 	CGO_ENABLED=0 GOOS=linux go build -pgo=auto -o bin/go-proxy github.com/yusing/go-proxy

 test:
-	cd src && go test ./... && cd ..
+	go test ./src/...

 up:
 	docker compose up -d
@@ -27,7 +27,7 @@ get:
 	cd src && go get -u && go mod tidy && cd ..

 debug:
-	make build && GOPROXY_DEBUG=1 bin/go-proxy
+	make build && sudo GOPROXY_DEBUG=1 bin/go-proxy

 archive:
 	git archive HEAD -o ../go-proxy-$$(date +"%Y%m%d%H%M").zip
@@ -42,3 +42,6 @@ rapid-crash:
 	sudo docker run --restart=always --name test_crash debian:bookworm-slim /bin/cat &&\
 	sleep 3 &&\
 	sudo docker rm -f test_crash
+
+debug-list-containers:
+	bash -c 'echo -e "GET /containers/json HTTP/1.0\r\n" | sudo netcat -U /var/run/docker.sock | tail -n +9 | jq'
--- a/README.md
+++ b/README.md
@@ -1,14 +1,24 @@
 # go-proxy

-A [lightweight](docs/benchmark_result.md), easy-to-use, and efficient reverse proxy and load balancer with a web UI.
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=ncloc)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=security_rating)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=sqale_rating)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=vulnerabilities)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)

-**Table of content**
+[繁體中文文檔請看此](README_CHT.md)
+
+A lightweight, easy-to-use, and [performant](docs/benchmark_result.md) reverse proxy with a web UI.
+
+## Table of content

 <!-- TOC -->

 - [go-proxy](#go-proxy)
+  - [Table of content](#table-of-content)
  - [Key Points](#key-points)
  - [Getting Started](#getting-started)
+    - [Setup](#setup)
    - [Commands line arguments](#commands-line-arguments)
    - [Environment variables](#environment-variables)
    - [Use JSON Schema in VSCode](#use-json-schema-in-vscode)
@@ -20,10 +30,14 @@ A [lightweight](docs/benchmark_result.md), easy-to-use, and efficient reverse pr
 ## Key Points

 - Easy to use
+  - Effortless configuration
+  - Error messages is clear and detailed, easy troubleshooting
 - Auto certificate obtaining and renewal (See [Supported DNS Challenge Providers](docs/dns_providers.md))
- Auto configuration for docker contaienrs
+- Auto configuration for docker containers
 - Auto hot-reload on container state / config file changes
- Support HTTP(s), TCP and UDP
+- Stop containers on idle, wake it up on traffic _(optional)_
+- HTTP(s) reserve proxy
+- TCP and UDP port forwarding
 - Web UI for configuration and monitoring (See [screenshots](https://github.com/yusing/go-proxy-frontend?tab=readme-ov-file#screenshots))
 - Written in **[Go](https://go.dev)**

@@ -31,35 +45,44 @@ A [lightweight](docs/benchmark_result.md), easy-to-use, and efficient reverse pr

 ## Getting Started

-1. Setup DNS Records
+### Setup
+
+1. Setup DNS Records, e.g.

   - A Record: `*.y.z` -> `10.0.10.1`
   - AAAA Record: `*.y.z` -> `::ffff:a00:a01`

 2. Setup `go-proxy` [See here](docs/docker.md)

-3. Configure `go-proxy`
-   - with text editor (i.e. Visual Studio Code)
+3. Setup `docker-socket-proxy` (see [example](docs/docker_socket_proxy.md) other machine that is running docker (if any)
+
+4. Configure `go-proxy`
+   - with text editor (e.g. Visual Studio Code)
   - or with web config editor via `http://gp.y.z`

 [🔼Back to top](#table-of-content)

 ### Commands line arguments

-| Argument   | Description                      |
-| ---------- | -------------------------------- |
-| empty      | start proxy server               |
-| `validate` | validate config and exit         |
-| `reload`   | trigger a force reload of config |
+| Argument    | Description                      | Example                    |
+| ----------- | -------------------------------- | -------------------------- |
+| empty       | start proxy server               |                            |
+| `validate`  | validate config and exit         |                            |
+| `reload`    | trigger a force reload of config |                            |
+| `ls-config` | list config and exit             | `go-proxy ls-config \| jq` |
+| `ls-route`  | list proxy entries and exit      | `go-proxy ls-route \| jq`  |

 **run with `docker exec <container_name> /app/go-proxy <command>`**

 ### Environment variables

-| Environment Variable           | Description               | Default | Values  |
-| ------------------------------ | ------------------------- | ------- | ------- |
-| `GOPROXY_NO_SCHEMA_VALIDATION` | disable schema validation | `false` | boolean |
-| `GOPROXY_DEBUG`                | enable debug behaviors    | `false` | boolean |
+| Environment Variable           | Description                                 | Default          | Values        |
+| ------------------------------ | ------------------------------------------- | ---------------- | ------------- |
+| `GOPROXY_NO_SCHEMA_VALIDATION` | disable schema validation                   | `false`          | boolean       |
+| `GOPROXY_DEBUG`                | enable debug behaviors                      | `false`          | boolean       |
+| `GOPROXY_HTTP_ADDR`            | http server listening address               | `:80`            | `[host]:port` |
+| `GOPROXY_HTTPS_ADDR`           | https server listening address (if enabled) | `:443`           | `[host]:port` |
+| `GOPROXY_API_ADDR`             | api server listening address                | `127.0.0.1:8888` | `[host]:port` |

 ### Use JSON Schema in VSCode

@@ -95,7 +118,7 @@ providers:

 ### Provider File

-Fields are same as [docker labels](docs/docker.md#labels) starting from `scheme`
+See [Fields](docs/docker.md#fields)

 See [providers.example.yml](providers.example.yml) for examples

@@ -103,7 +126,7 @@ See [providers.example.yml](providers.example.yml) for examples

 ## Known issues

- Cert "renewal" is actually obtaining a new cert instead of renewing the existing one
+- `autocert` config is not hot-reloadable

 [🔼Back to top](#table-of-content)

@@ -119,6 +142,4 @@ See [providers.example.yml](providers.example.yml) for examples

 5. build binary with `make build`

-6. start your container with `make up` (docker) or `bin/go-proxy` (binary)
-
 [🔼Back to top](#table-of-content)
--- a/README_CHT.md
+++ b/README_CHT.md
@@ -0,0 +1,141 @@
+# go-proxy
+
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=ncloc)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=security_rating)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=sqale_rating)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=yusing_go-proxy&metric=vulnerabilities)](https://sonarcloud.io/summary/new_code?id=yusing_go-proxy)
+
+一個輕量化、易用且[高效](docs/benchmark_result.md)的反向代理和端口轉發工具
+
+## 目錄
+
+<!-- TOC -->
+
+- [go-proxy](#go-proxy)
+  - [目錄](#目錄)
+  - [重點](#重點)
+  - [入門指南](#入門指南)
+    - [安裝](#安裝)
+    - [命令行參數](#命令行參數)
+    - [環境變量](#環境變量)
+    - [VSCode 中使用 JSON Schema](#vscode-中使用-json-schema)
+    - [配置文件](#配置文件)
+    - [透過文件配置](#透過文件配置)
+  - [已知問題](#已知問題)
+  - [源碼編譯](#源碼編譯)
+
+## 重點
+
+- 易用
+  - 不需花費太多時間就能輕鬆配置
+  - 除錯簡單
+- 自動處理 HTTPS 證書（參見[可用的 DNS 供應商](docs/dns_providers.md)）
+- 透過 Docker 容器自動配置
+- 容器狀態變更時自動熱重載
+- 容器閒置時自動暫停/停止，入站時自動喚醒
+- HTTP(s)反向代理
+- TCP/UDP 端口轉發
+- 用於配置和監控的前端 Web 面板（[截圖](https://github.com/yusing/go-proxy-frontend?tab=readme-ov-file#screenshots)）
+- 使用 **[Go](https://go.dev)** 編寫
+
+[🔼 返回頂部](#目錄)
+
+## 入門指南
+
+### 安裝
+
+1. 設置 DNS 記錄，例如：
+
+   - A 記錄: `*.y.z` -> `10.0.10.1`
+   - AAAA 記錄: `*.y.z` -> `::ffff:a00:a01`
+
+2. 安裝 `go-proxy` [參見這裡](docs/docker.md)
+
+3. 配置 `go-proxy`
+   - 使用文本編輯器 (推薦 Visual Studio Code [參見 VSCode 使用 schema](#vscode-中使用-json-schema))
+   - 或通過 `http://gp.y.z` 使用網頁配置編輯器
+
+[🔼 返回頂部](#目錄)
+
+### 命令行參數
+
+| 參數        | 描述           | 示例                       |
+| ----------- | -------------- | -------------------------- |
+| 空          | 啟動代理服務器 |                            |
+| `validate`  | 驗證配置並退出 |                            |
+| `reload`    | 強制刷新配置   |                            |
+| `ls-config` | 列出配置並退出 | `go-proxy ls-config \| jq` |
+| `ls-route`  | 列出路由並退出 | `go-proxy ls-route \| jq`  |
+
+**使用 `docker exec <容器名稱> /app/go-proxy <參數>` 運行**
+
+### 環境變量
+
+| 環境變量                       | 描述             | 默認             | 格式          |
+| ------------------------------ | ---------------- | ---------------- | ------------- |
+| `GOPROXY_NO_SCHEMA_VALIDATION` | 禁用 schema 驗證 | `false`          | boolean       |
+| `GOPROXY_DEBUG`                | 啟用調試輸出     | `false`          | boolean       |
+| `GOPROXY_HTTP_ADDR`            | http 收聽地址    | `:80`            | `[host]:port` |
+| `GOPROXY_HTTPS_ADDR`           | https 收聽地址   | `:443`           | `[host]:port` |
+| `GOPROXY_API_ADDR`             | api 收聽地址     | `127.0.0.1:8888` | `[host]:port` |
+
+### VSCode 中使用 JSON Schema
+
+複製 [`.vscode/settings.example.json`](.vscode/settings.example.json) 到 `.vscode/settings.json` 並根據需求修改
+
+[🔼 返回頂部](#目錄)
+
+### 配置文件
+
+參見 [config.example.yml](config.example.yml) 了解更多
+
+```yaml
+# autocert 配置
+autocert:
+  email: # ACME 電子郵件
+  domains: # 域名列表
+  provider: # DNS 供應商
+  options: # 供應商個別配置
+    - ...
+# 配置文件 / docker
+providers:
+  include:
+    - providers.yml
+    - other_file_1.yml
+    - ...
+  docker:
+    local: $DOCKER_HOST
+    remote-1: tcp://10.0.2.1:2375
+    remote-2: ssh://root:1234@10.0.2.2
+```
+
+[🔼 返回頂部](#目錄)
+
+### 透過文件配置
+
+參見 [Fields](docs/docker.md#fields)
+
+參見範例 [providers.example.yml](providers.example.yml)
+
+[🔼 返回頂部](#目錄)
+
+## 已知問題
+
+- `autocert` 配置不能熱重載
+
+[🔼 返回頂部](#目錄)
+
+## 源碼編譯
+
+1. 獲取源碼 `git clone https://github.com/yusing/go-proxy --depth=1`
+
+2. 安裝/升級 [go 版本 (>=1.22)](https://go.dev/doc/install) 和 `make`（如果尚未安裝）
+
+3. 如果之前編譯過（go 版本 < 1.22），請使用 `go clean -cache` 清除緩存
+
+4. 使用 `make get` 獲取依賴項
+
+5. 使用 `make build` 編譯
+
+[🔼 返回頂部](#目錄)
--- a/compose.example.yml
+++ b/compose.example.yml
@@ -6,7 +6,7 @@ services:
    network_mode: host
    labels:
      - proxy.aliases=gp
-      - proxy.gp.port=8888
+      - proxy.gp.port=3000
    depends_on:
      - app
  app:
@@ -14,8 +14,11 @@ services:
    container_name: go-proxy
    restart: always
    network_mode: host
+    environment:
+      # (Optional) change this to your timezone to get correct log timestamp
+      TZ: ETC/UTC
    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - /var/run/docker.sock:/var/run/docker.sock
      - ./config:/app/config

      # (Optional) choose one of below to enable https
--- a/docs/add_dns_provider.md
+++ b/docs/add_dns_provider.md
@@ -7,7 +7,7 @@
   ```go
   var providersGenMap = map[string]ProviderGenerator{
     "cloudflare": providerGenerator(cloudflare.NewDefaultConfig, cloudflare.NewDNSProviderConfig),
-     // add here, i.e.
+     // add here, e.g.
     "clouddns": providerGenerator(clouddns.NewDefaultConfig, clouddns.NewDNSProviderConfig),
   }
   ```
--- a/docs/dns_providers.md
+++ b/docs/dns_providers.md
@@ -1,11 +1,13 @@
 # Supported DNS Providers

 <!-- TOC -->
- [Cloudflare](#cloudflare)
- [CloudDNS](#clouddns)
- [DuckDNS](#duckdns)
- [Implement other DNS providers](#implement-other-dns-providers)
-<!-- /TOC -->
+
+- [Supported DNS Providers](#supported-dns-providers)
+  - [Cloudflare](#cloudflare)
+  - [CloudDNS](#clouddns)
+  - [DuckDNS](#duckdns)
+  - [OVHCloud](#ovhcloud)
+  - [Implement other DNS providers](#implement-other-dns-providers)

 ## Cloudflare

@@ -23,10 +25,29 @@ Follow [this guide](https://cloudkul.com/blog/automcatic-renew-and-generate-ssl-

 ## DuckDNS

-`token`: DuckDNS Token
+- `token`: DuckDNS Token

 Tested by [earvingad](https://github.com/earvingad)

+## OVHCloud
+
+_Note, `application_key` and `oauth2_config` **CANNOT** be used together_
+
+- `api_endpoint`: Endpoint URL, or one of
+  - `ovh-eu`,
+  - `ovh-ca`,
+  - `ovh-us`,
+  - `kimsufi-eu`,
+  - `kimsufi-ca`,
+  - `soyoustart-eu`,
+  - `soyoustart-ca`
+- `application_secret`
+- `application_key`
+- `consumer_key`
+- `oauth2_config`: Client ID and Client Secret
+  - `client_id`
+  - `client_secret`
+
 ## Implement other DNS providers

 See [add_dns_provider.md](docs/add_dns_provider.md)
--- a/docs/docker.md
+++ b/docs/docker.md
@@ -85,11 +85,18 @@

 ### Syntax

-| Label                   | Description                                              | Default          |
-| ----------------------- | -------------------------------------------------------- | ---------------- |
-| `proxy.aliases`         | comma separated aliases for subdomain and label matching | `container_name` |
-| `proxy.<alias>.<field>` | set field for specific alias                             | N/A              |
-| `proxy.*.<field>`       | set field for all aliases                                | N/A              |
+| Label                    | Description                                                           | Default              | Accepted values                                                           |
+| ------------------------ | --------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------- |
+| `proxy.aliases`          | comma separated aliases for subdomain and label matching              | `container_name`     | any                                                                       |
+| `proxy.exclude`          | to be excluded from `go-proxy`                                        | false                | boolean                                                                   |
+| `proxy.idle_timeout`     | time for idle (no traffic) before put it into sleep **(http/s only)** | empty **(disabled)** | `number[unit]...`, e.g. `1m30s`                                           |
+| `proxy.wake_timeout`     | time to wait for container to start before responding a loading page  | empty                | `number[unit]...`                                                         |
+| `proxy.stop_method`      | method to stop after `idle_timeout`                                   | `stop`               | `stop`, `pause`, `kill`                                                   |
+| `proxy.stop_timeout`     | time to wait for stop command                                         | `10s`                | `number[unit]...`                                                         |
+| `proxy.stop_signal`      | signal sent to container for `stop` and `kill` methods                | docker's default     | `SIGINT`, `SIGTERM`, `SIGHUP`, `SIGQUIT` and those without **SIG** prefix |
+| `proxy.<alias>.<field>`  | set field for specific alias                                          | N/A                  | N/A                                                                       |
+| `proxy.$<index>.<field>` | set field for specific alias at index (starting from **1**)           | N/A                  | N/A                                                                       |
+| `proxy.*.<field>`        | set field for all aliases                                             | N/A                  | N/A                                                                       |

 ### Fields

@@ -172,7 +179,7 @@ service_a:

 - Container not showing up in proxies list

-  Please check that either `ports` or label `proxy.<alias>.port` is declared, i.e.
+  Please check that either `ports` or label `proxy.<alias>.port` is declared, e.g.

  ```yaml
  services:
@@ -183,6 +190,7 @@ service_a:
    nginx-2: # Option 2
      ...
      container_name: nginx-2
+      network_mode: host
      labels:
        proxy.nginx-2.port: 80
  ```
@@ -207,6 +215,8 @@ service_a:

 ## Docker compose examples

+More examples in [here](examples/)
+
 ```yaml
 volumes:
  adg-work:
@@ -220,19 +230,25 @@ services:
    restart: unless-stopped
    labels:
      - proxy.aliases=adg,adg-dns,adg-setup
-      - proxy.adg.port=80
-      - proxy.adg-setup.port=3000
-      - proxy.adg-dns.scheme=udp
-      - proxy.adg-dns.port=20000:dns
+      - proxy.$1.port=80
+      - proxy.$2.scheme=udp
+      - proxy.$2.port=20000:dns
+      - proxy.$3.port=3000
    volumes:
      - adg-work:/opt/adguardhome/work
      - adg-conf:/opt/adguardhome/conf
+    ports:
+      - 80
+      - 3000
+      - 53/udp
  mc:
    image: itzg/minecraft-server
    tty: true
    stdin_open: true
    container_name: mc
    restart: unless-stopped
+    ports:
+      - 25565
    labels:
      - proxy.mc.scheme=tcp
      - proxy.mc.port=20001:25565
@@ -245,11 +261,14 @@ services:
    restart: unless-stopped
    container_name: pal
    stop_grace_period: 30s
+    ports:
+      - 8211/udp
+      - 27015/udp
    labels:
      - proxy.aliases=pal1,pal2
      - proxy.*.scheme=udp
-      - proxy.pal1.port=20002:8211
-      - proxy.pal2.port=20003:27015
+      - proxy.$1.port=20002:8211
+      - proxy.$2.port=20003:27015
    environment: ...
    volumes:
      - palworld:/palworld
@@ -260,6 +279,8 @@ services:
      - nginx:/usr/share/nginx/html
    ports:
      - 80
+    labels:
+      proxy.idle_timeout: 1m
  go-proxy:
    image: ghcr.io/yusing/go-proxy:latest
    container_name: go-proxy
@@ -267,7 +288,7 @@ services:
    network_mode: host
    volumes:
      - ./config:/app/config
-      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - /var/run/docker.sock:/var/run/docker.sock
  go-proxy-frontend:
    image: ghcr.io/yusing/go-proxy-frontend:latest
    container_name: go-proxy-frontend
@@ -275,7 +296,7 @@ services:
    network_mode: host
    labels:
      - proxy.aliases=gp
-      - proxy.gp.port=8888
+      - proxy.gp.port=3000
    depends_on:
      - go-proxy
 ```
@@ -288,8 +309,8 @@ services:
 - `adg-setup.yourdomain.com`: adguard setup (first time setup)
 - `adg.yourdomain.com`: adguard dashboard
 - `nginx.yourdomain.com`: nginx
- `yourdomain.com:53`: adguard dns
- `yourdomain.com:25565`: minecraft server
- `yourdomain.com:8211`: palworld server
+- `yourdomain.com:2000`: adguard dns (udp)
+- `yourdomain.com:20001`: minecraft server
+- `yourdomain.com:20002`: palworld server

 [🔼Back to top](#table-of-content)
--- a/docs/docker_socket_proxy.md
+++ b/docs/docker_socket_proxy.md
@@ -0,0 +1,59 @@
+## Docker Socket Proxy
+
+For docker client on other machine, set this up, then add `name: tcp://<machine_ip>:2375` to `config.yml` under `docker` section
+
+```yml
+# compose.yml on remote machine (e.g. server1)
+services:
+  docker-proxy:
+    container_name: docker-proxy
+    image: ghcr.io/linuxserver/socket-proxy
+    environment:
+      - ALLOW_START=1 #optional
+      - ALLOW_STOP=1 #optional
+      - ALLOW_RESTARTS=0 #optional
+      - AUTH=0 #optional
+      - BUILD=0 #optional
+      - COMMIT=0 #optional
+      - CONFIGS=0 #optional
+      - CONTAINERS=1 #optional
+      - DISABLE_IPV6=1 #optional
+      - DISTRIBUTION=0 #optional
+      - EVENTS=1 #optional
+      - EXEC=0 #optional
+      - IMAGES=0 #optional
+      - INFO=0 #optional
+      - NETWORKS=0 #optional
+      - NODES=0 #optional
+      - PING=1 #optional
+      - POST=1 #optional
+      - PLUGINS=0 #optional
+      - SECRETS=0 #optional
+      - SERVICES=0 #optional
+      - SESSION=0 #optional
+      - SWARM=0 #optional
+      - SYSTEM=0 #optional
+      - TASKS=0 #optional
+      - VERSION=1 #optional
+      - VOLUMES=0 #optional
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    restart: always
+    tmpfs:
+      - /run
+    ports:
+      - 2375:2375
+```
+
+```yml
+# config.yml on go-proxy machine
+autocert:
+    ... # your config
+
+providers:
+    include:
+        ...
+    docker:
+        ...
+        server1: tcp://<machine_ip>:2375
+```
--- a/examples/microbin.yml
+++ b/examples/microbin.yml
@@ -0,0 +1,16 @@
+services:
+  app:
+    container_name: microbin
+    cpu_shares: 10
+    deploy:
+      resources:
+        limits:
+          memory: 256M
+    env_file: .env
+    image: docker.i.sh/danielszabo99/microbin:latest
+    ports:
+      - 8080
+    restart: unless-stopped
+    volumes:
+      - ./data:/app/microbin_data
+# microbin.domain.tld
--- a/examples/siyuan.yml
+++ b/examples/siyuan.yml
@@ -0,0 +1,16 @@
+services:
+  main:
+    image: b3log/siyuan:v3.1.0
+    container_name: siyuan
+    command:
+      - --workspace=/siyuan/workspace/
+      - --accessAuthCode=<some password>
+    user: 1000:1000
+    volumes:
+      - ./workspace:/siyuan/workspace
+    restart: unless-stopped
+    environment:
+      - TZ=Asia/Hong_Kong
+    ports:
+      - 6806
+# siyuan.domain.tld
--- a/go.work
+++ b/go.work
@@ -1,4 +1,4 @@
-go 1.22
+go 1.22.0

 toolchain go1.23.1

--- a/schema/config.schema.json
+++ b/schema/config.schema.json
@@ -37,7 +37,7 @@
          "title": "DNS Challenge Provider",
          "default": "local",
          "type": "string",
-          "enum": ["local", "cloudflare", "clouddns", "duckdns"]
+          "enum": ["local", "cloudflare", "clouddns", "duckdns", "ovh"]
        },
        "options": {
          "title": "Provider specific options",
@@ -135,6 +135,82 @@
              }
            }
          }
+        },
+        {
+          "if": {
+            "properties": {
+              "provider": {
+                "const": "ovh"
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "options": {
+                "required": ["application_secret", "consumer_key"],
+                "additionalProperties": false,
+                "oneOf": [
+                  {
+                    "required": ["application_key"]
+                  },
+                  {
+                    "required": ["oauth2_config"]
+                  }
+                ],
+                "properties": {
+                  "api_endpoint": {
+                    "description": "OVH API endpoint",
+                    "default": "ovh-eu",
+                    "anyOf": [
+                      {
+                        "enum": [
+                          "ovh-eu",
+                          "ovh-ca",
+                          "ovh-us",
+                          "kimsufi-eu",
+                          "kimsufi-ca",
+                          "soyoustart-eu",
+                          "soyoustart-ca"
+                        ]
+                      },
+                      {
+                        "type": "string",
+                        "format": "uri"
+                      }
+                    ]
+                  },
+                  "application_secret": {
+                    "description": "OVH Application Secret",
+                    "type": "string"
+                  },
+                  "consumer_key": {
+                    "description": "OVH Consumer Key",
+                    "type": "string"
+                  },
+                  "application_key": {
+                    "description": "OVH Application Key",
+                    "type": "string"
+                  },
+                  "oauth2_config": {
+                    "description": "OVH OAuth2 config",
+                    "type": "object",
+                    "additionalProperties": false,
+                    "properties": {
+                      "client_id": {
+                        "description": "OVH Client ID",
+                        "type": "string"
+                      },
+                      "client_secret": {
+                        "description": "OVH Client Secret",
+                        "type": "string"
+                      }
+                    },
+                    "required": ["client_id", "client_secret"]
+                  }
+                }
+              }
+            }
+          }
        }
      ]
    },
--- a/setup-docker.sh
+++ b/setup-docker.sh
@@ -2,7 +2,7 @@

 set -e
 if [ -z "$BRANCH" ]; then
-    BRANCH="main"
+    BRANCH="v0.5"
 fi
 BASE_URL="https://github.com/yusing/go-proxy/raw/${BRANCH}"
 mkdir -p go-proxy
--- a/src/api/v1/checkhealth.go
+++ b/src/api/v1/checkhealth.go
@@ -3,6 +3,7 @@ package v1
 import (
 	"fmt"
 	"net/http"
+	"strings"

 	U "github.com/yusing/go-proxy/api/v1/utils"
 	"github.com/yusing/go-proxy/config"
@@ -17,17 +18,19 @@ func CheckHealth(cfg *config.Config, w http.ResponseWriter, r *http.Request) {
 	}

 	var ok bool
+	route := cfg.FindRoute(target)

-	switch route := cfg.FindRoute(target).(type) {
-	case nil:
+	switch {
+	case route == nil:
 		U.HandleErr(w, r, U.ErrNotFound("target", target), http.StatusNotFound)
 		return
-	case *R.HTTPRoute:
-		ok = U.IsSiteHealthy(route.TargetURL.String())
-	case *R.StreamRoute:
+	case route.Type() == R.RouteTypeReverseProxy:
+		ok = U.IsSiteHealthy(route.URL().String())
+	case route.Type() == R.RouteTypeStream:
+		entry := route.Entry()
 		ok = U.IsStreamHealthy(
-			string(route.Scheme.ProxyScheme),
-			fmt.Sprintf("%s:%v", route.Host, route.Port.ProxyPort),
+			strings.Split(entry.Scheme, ":")[1], // target scheme
+			fmt.Sprintf("%s:%v", entry.Host, strings.Split(entry.Port, ":")[1]),
 		)
 	}

--- a/src/api/v1/file.go
+++ b/src/api/v1/file.go
@@ -9,7 +9,6 @@ import (
 	U "github.com/yusing/go-proxy/api/v1/utils"
 	"github.com/yusing/go-proxy/common"
 	"github.com/yusing/go-proxy/config"
-	E "github.com/yusing/go-proxy/error"
 	"github.com/yusing/go-proxy/proxy/provider"
 )

@@ -32,25 +31,25 @@ func SetFileContent(w http.ResponseWriter, r *http.Request) {
 		U.HandleErr(w, r, U.ErrMissingKey("filename"), http.StatusBadRequest)
 		return
 	}
-	content, err := E.Check(io.ReadAll(r.Body))
-	if err.IsNotNil() {
+	content, err := io.ReadAll(r.Body)
+	if err != nil {
 		U.HandleErr(w, r, err)
 		return
 	}

 	if filename == common.ConfigFileName {
-		err = config.Validate(content)
+		err = config.Validate(content).Error()
 	} else {
-		err = provider.Validate(content)
+		err = provider.Validate(content).Error()
 	}

-	if err.IsNotNil() {
+	if err != nil {
 		U.HandleErr(w, r, err, http.StatusBadRequest)
 		return
 	}

-	err = E.From(os.WriteFile(path.Join(common.ConfigBasePath, filename), content, 0644))
-	if err.IsNotNil() {
+	err = os.WriteFile(path.Join(common.ConfigBasePath, filename), content, 0644)
+	if err != nil {
 		U.HandleErr(w, r, err)
 		return
 	}
--- a/src/api/v1/list.go
+++ b/src/api/v1/list.go
@@ -29,10 +29,10 @@ func List(cfg *config.Config, w http.ResponseWriter, r *http.Request) {

 func listRoutes(cfg *config.Config, w http.ResponseWriter, r *http.Request) {
 	routes := cfg.RoutesByAlias()
-	type_filter := r.FormValue("type")
-	if type_filter != "" {
+	typeFilter := r.FormValue("type")
+	if typeFilter != "" {
 		for k, v := range routes {
-			if v["type"] != type_filter {
+			if v["type"] != typeFilter {
 				delete(routes, k)
 			}
 		}
--- a/src/api/v1/reload.go
+++ b/src/api/v1/reload.go
@@ -8,7 +8,7 @@ import (
 )

 func Reload(cfg *config.Config, w http.ResponseWriter, r *http.Request) {
-	if err := cfg.Reload(); err.IsNotNil() {
+	if err := cfg.Reload().Error(); err != nil {
 		U.HandleErr(w, r, err)
 		return
 	}
--- a/src/api/v1/stats.go
+++ b/src/api/v1/stats.go
@@ -10,7 +10,7 @@ import (
 )

 func Stats(cfg *config.Config, w http.ResponseWriter, r *http.Request) {
-	stats := map[string]interface{}{
+	stats := map[string]any{
 		"proxies": cfg.Statistics(),
 		"uptime":  utils.FormatDuration(server.GetProxyServer().Uptime()),
 	}
--- a/src/api/v1/utils/error.go
+++ b/src/api/v1/utils/error.go
@@ -9,14 +9,14 @@ import (
 	E "github.com/yusing/go-proxy/error"
 )

-func HandleErr(w http.ResponseWriter, r *http.Request, err error, code ...int) {
-	err = E.From(err).Subjectf("%s %s", r.Method, r.URL)
+func HandleErr(w http.ResponseWriter, r *http.Request, origErr error, code ...int) {
+	err := E.From(origErr).Subjectf("%s %s", r.Method, r.URL)
 	logrus.WithField("module", "api").Error(err)
 	if len(code) > 0 {
-		http.Error(w, err.Error(), code[0])
+		http.Error(w, err.String(), code[0])
 		return
 	}
-	http.Error(w, err.Error(), http.StatusInternalServerError)
+	http.Error(w, err.String(), http.StatusInternalServerError)
 }

 func ErrMissingKey(k string) error {
--- a/src/api/v1/utils/net.go
+++ b/src/api/v1/utils/net.go
@@ -36,7 +36,7 @@ func IsStreamHealthy(scheme, address string) bool {
 }

 func ReloadServer() E.NestedError {
-	resp, err := HttpClient.Post(fmt.Sprintf("http://localhost%v/reload", common.APIHTTPPort), "", nil)
+	resp, err := HttpClient.Post(fmt.Sprintf("http://localhost%v/reload", common.APIHTTPAddr), "", nil)
 	if err != nil {
 		return E.From(err)
 	}
@@ -44,7 +44,7 @@ func ReloadServer() E.NestedError {
 	if resp.StatusCode != http.StatusOK {
 		return E.Failure("server reload").Subjectf("status code: %v", resp.StatusCode)
 	}
-	return E.Nil()
+	return nil
 }

 var HttpClient = &http.Client{
--- a/src/autocert/config.go
+++ b/src/autocert/config.go
@@ -20,59 +20,56 @@ func NewConfig(cfg *M.AutoCertConfig) *Config {
 	if cfg.KeyPath == "" {
 		cfg.KeyPath = KeyFileDefault
 	}
+	if cfg.Provider == "" {
+		cfg.Provider = ProviderLocal
+	}
 	return (*Config)(cfg)
 }

-func (cfg *Config) GetProvider() (*Provider, E.NestedError) {
-	errors := E.NewBuilder("cannot create autocert provider")
+func (cfg *Config) GetProvider() (provider *Provider, res E.NestedError) {
+	b := E.NewBuilder("unable to initialize autocert")
+	defer b.To(&res)

 	if cfg.Provider != ProviderLocal {
 		if len(cfg.Domains) == 0 {
-			errors.Addf("no domains specified")
+			b.Addf("no domains specified")
 		}
 		if cfg.Provider == "" {
-			errors.Addf("no provider specified")
+			b.Addf("no provider specified")
 		}
 		if cfg.Email == "" {
-			errors.Addf("no email specified")
+			b.Addf("no email specified")
+		}
+		// check if provider is implemented
+		_, ok := providersGenMap[cfg.Provider]
+		if !ok {
+			b.Addf("unknown provider: %q", cfg.Provider)
 		}
 	}

-	gen, ok := providersGenMap[cfg.Provider]
-	if !ok {
-		errors.Addf("unknown provider: %q", cfg.Provider)
-	}
-	if err := errors.Build(); err.IsNotNil() {
-		return nil, err
+	if b.HasError() {
+		return
 	}

 	privKey, err := E.Check(ecdsa.GenerateKey(elliptic.P256(), rand.Reader))
-	if err.IsNotNil() {
-		return nil, E.Failure("generate private key").With(err)
+	if err.HasError() {
+		b.Add(E.FailWith("generate private key", err))
+		return
 	}
+
 	user := &User{
 		Email: cfg.Email,
 		key:   privKey,
 	}
+
 	legoCfg := lego.NewConfig(user)
 	legoCfg.Certificate.KeyType = certcrypto.RSA2048
-	legoClient, err := E.Check(lego.NewClient(legoCfg))
-	if err.IsNotNil() {
-		return nil, E.Failure("create lego client").With(err)
-	}
-	base := &Provider{
+
+	provider = &Provider{
 		cfg:     cfg,
 		user:    user,
 		legoCfg: legoCfg,
-		client:  legoClient,
 	}
-	legoProvider, err := E.Check(gen(cfg.Options))
-	if err.IsNotNil() {
-		return nil, E.Failure("create lego provider").With(err)
-	}
-	err = E.From(legoClient.Challenge.SetDNS01Provider(legoProvider))
-	if err.IsNotNil() {
-		return nil, E.Failure("set challenge provider").With(err)
-	}
-	return base, E.Nil()
+
+	return
 }
--- a/src/autocert/constants.go
+++ b/src/autocert/constants.go
@@ -1,16 +1,20 @@
 package autocert

 import (
+	"errors"
+
 	"github.com/go-acme/lego/v4/providers/dns/clouddns"
 	"github.com/go-acme/lego/v4/providers/dns/cloudflare"
 	"github.com/go-acme/lego/v4/providers/dns/duckdns"
+	"github.com/go-acme/lego/v4/providers/dns/ovh"
 	"github.com/sirupsen/logrus"
 )

 const (
-	certBasePath    = "certs/"
-	CertFileDefault = certBasePath + "cert.crt"
-	KeyFileDefault  = certBasePath + "priv.key"
+	certBasePath     = "certs/"
+	CertFileDefault  = certBasePath + "cert.crt"
+	KeyFileDefault   = certBasePath + "priv.key"
+	RegistrationFile = certBasePath + "registration.json"
 )

 const (
@@ -18,14 +22,19 @@ const (
 	ProviderCloudflare = "cloudflare"
 	ProviderClouddns   = "clouddns"
 	ProviderDuckdns    = "duckdns"
+	ProviderOVH        = "ovh"
 )

 var providersGenMap = map[string]ProviderGenerator{
-	"":                 providerGenerator(NewDummyDefaultConfig, NewDummyDNSProviderConfig),
 	ProviderLocal:      providerGenerator(NewDummyDefaultConfig, NewDummyDNSProviderConfig),
 	ProviderCloudflare: providerGenerator(cloudflare.NewDefaultConfig, cloudflare.NewDNSProviderConfig),
 	ProviderClouddns:   providerGenerator(clouddns.NewDefaultConfig, clouddns.NewDNSProviderConfig),
 	ProviderDuckdns:    providerGenerator(duckdns.NewDefaultConfig, duckdns.NewDNSProviderConfig),
+	ProviderOVH:        providerGenerator(ovh.NewDefaultConfig, ovh.NewDNSProviderConfig),
 }

-var Logger = logrus.WithField("module", "autocert")
+var (
+	ErrGetCertFailure = errors.New("get certificate failed")
+)
+
+var logger = logrus.WithField("module", "autocert")
--- a/src/autocert/provider.go
+++ b/src/autocert/provider.go
@@ -5,18 +5,17 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"os"
-	"slices"
-	"sync"
+	"reflect"
+	"sort"
 	"time"

 	"github.com/go-acme/lego/v4/certificate"
 	"github.com/go-acme/lego/v4/challenge"
 	"github.com/go-acme/lego/v4/lego"
 	"github.com/go-acme/lego/v4/registration"
-	"github.com/sirupsen/logrus"
 	E "github.com/yusing/go-proxy/error"
 	M "github.com/yusing/go-proxy/models"
-	"github.com/yusing/go-proxy/utils"
+	U "github.com/yusing/go-proxy/utils"
 )

 type Provider struct {
@@ -27,15 +26,14 @@ type Provider struct {

 	tlsCert      *tls.Certificate
 	certExpiries CertExpiries
-	mutex        sync.Mutex
 }

-type ProviderGenerator func(M.AutocertProviderOpt) (challenge.Provider, error)
+type ProviderGenerator func(M.AutocertProviderOpt) (challenge.Provider, E.NestedError)
 type CertExpiries map[string]time.Time

 func (p *Provider) GetCert(_ *tls.ClientHelloInfo) (*tls.Certificate, error) {
 	if p.tlsCert == nil {
-		return nil, E.Failure("get certificate")
+		return nil, ErrGetCertFailure
 	}
 	return p.tlsCert, nil
 }
@@ -56,60 +54,81 @@ func (p *Provider) GetExpiries() CertExpiries {
 	return p.certExpiries
 }

-func (p *Provider) ObtainCert() E.NestedError {
-	ne := E.Failure("obtain certificate")
+func (p *Provider) ObtainCert() (res E.NestedError) {
+	b := E.NewBuilder("failed to obtain certificate")
+	defer b.To(&res)
+
+	if p.cfg.Provider == ProviderLocal {
+		b.Addf("provider is set to %q", ProviderLocal)
+		return
+	}
+
+	if p.client == nil {
+		if err := p.initClient(); err.HasError() {
+			b.Add(E.FailWith("init autocert client", err))
+			return
+		}
+	}
+
+	if p.user.Registration == nil {
+		if err := p.loadRegistration(); err.HasError() {
+			if err := p.registerACME(); err.HasError() {
+				b.Add(E.FailWith("register ACME", err))
+				return
+			}
+		}
+	}

 	client := p.client
-	if p.user.Registration == nil {
-		reg, err := E.Check(client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true}))
-		if err.IsNotNil() {
-			return ne.With(E.Failure("register account").With(err))
-		}
-		p.user.Registration = reg
-	}
 	req := certificate.ObtainRequest{
 		Domains: p.cfg.Domains,
 		Bundle:  true,
 	}
 	cert, err := E.Check(client.Certificate.Obtain(req))
-	if err.IsNotNil() {
-		return ne.With(err)
+	if err.HasError() {
+		b.Add(err)
+		return
 	}
 	err = p.saveCert(cert)
-	if err.IsNotNil() {
-		return ne.With(E.Failure("save certificate").With(err))
+	if err.HasError() {
+		b.Add(E.FailWith("save certificate", err))
+		return
 	}
 	tlsCert, err := E.Check(tls.X509KeyPair(cert.Certificate, cert.PrivateKey))
-	if err.IsNotNil() {
-		return ne.With(E.Failure("parse obtained certificate").With(err))
+	if err.HasError() {
+		b.Add(E.FailWith("parse obtained certificate", err))
+		return
 	}
 	expiries, err := getCertExpiries(&tlsCert)
-	if err.IsNotNil() {
-		return ne.With(E.Failure("get certificate expiry").With(err))
+	if err.HasError() {
+		b.Add(E.FailWith("get certificate expiry", err))
+		return
 	}
 	p.tlsCert = &tlsCert
 	p.certExpiries = expiries
-	return E.Nil()
+
+	return nil
 }

 func (p *Provider) LoadCert() E.NestedError {
 	cert, err := E.Check(tls.LoadX509KeyPair(p.cfg.CertPath, p.cfg.KeyPath))
-	if err.IsNotNil() {
+	if err.HasError() {
 		return err
 	}
 	expiries, err := getCertExpiries(&cert)
-	if err.IsNotNil() {
+	if err.HasError() {
 		return err
 	}
 	p.tlsCert = &cert
 	p.certExpiries = expiries
-	p.renewIfNeeded()
-	return E.Nil()
+
+	logger.Infof("next renewal in %v", U.FormatDuration(time.Until(p.ShouldRenewOn())))
+	return p.renewIfNeeded()
 }

 func (p *Provider) ShouldRenewOn() time.Time {
 	for _, expiry := range p.certExpiries {
-		return expiry.AddDate(0, -1, 0)
+		return expiry.AddDate(0, -1, 0) // 1 month before
 	}
 	// this line should never be reached
 	panic("no certificate available")
@@ -120,139 +139,161 @@ func (p *Provider) ScheduleRenewal(ctx context.Context) {
 		return
 	}

-	logger.Debug("starting renewal scheduler")
+	logger.Debug("started renewal scheduler")
 	defer logger.Debug("renewal scheduler stopped")

-	stop := make(chan struct{})
+	ticker := time.NewTicker(5 * time.Second)
+	defer ticker.Stop()

 	for {
 		select {
 		case <-ctx.Done():
 			return
-		default:
-			t := time.Until(p.ShouldRenewOn())
-			Logger.Infof("next renewal in %v", t.Round(time.Second))
-			go func() {
-				<-time.After(t)
-				close(stop)
-			}()
-			select {
-			case <-ctx.Done():
-				return
-			case <-stop:
-				if err := p.renewIfNeeded(); err.IsNotNil() {
-					Logger.Fatal(err)
-				}
+		case <-ticker.C: // check every 5 seconds
+			if err := p.renewIfNeeded(); err.HasError() {
+				logger.Warn(err)
 			}
 		}
 	}
 }

-func (p *Provider) saveCert(cert *certificate.Resource) E.NestedError {
-	err := os.WriteFile(p.cfg.KeyPath, cert.PrivateKey, 0600) // -rw-------
-	if err != nil {
-		return E.Failure("write key file").With(err)
+func (p *Provider) initClient() E.NestedError {
+	legoClient, err := E.Check(lego.NewClient(p.legoCfg))
+	if err.HasError() {
+		return E.FailWith("create lego client", err)
 	}
-	err = os.WriteFile(p.cfg.CertPath, cert.Certificate, 0644) // -rw-r--r--
-	if err != nil {
-		return E.Failure("write cert file").With(err)
+
+	legoProvider, err := providersGenMap[p.cfg.Provider](p.cfg.Options)
+	if err.HasError() {
+		return E.FailWith("create lego provider", err)
 	}
-	return E.Nil()
+
+	err = E.From(legoClient.Challenge.SetDNS01Provider(legoProvider))
+	if err.HasError() {
+		return E.FailWith("set challenge provider", err)
+	}
+
+	p.client = legoClient
+	return nil
 }

-func (p *Provider) needRenewal() bool {
-	expired := time.Now().After(p.ShouldRenewOn())
-	if expired {
-		return true
+func (p *Provider) registerACME() E.NestedError {
+	if p.user.Registration != nil {
+		return nil
 	}
-	if len(p.cfg.Domains) != len(p.certExpiries) {
-		return true
+	reg, err := E.Check(p.client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true}))
+	if err.HasError() {
+		return err
 	}
-	wantedDomains := make([]string, len(p.cfg.Domains))
+	p.user.Registration = reg
+
+	if err := p.saveRegistration(); err.HasError() {
+		logger.Warn(err)
+	}
+	return nil
+}
+
+func (p *Provider) loadRegistration() E.NestedError {
+	if p.user.Registration != nil {
+		return nil
+	}
+	reg := &registration.Resource{}
+	err := U.LoadJson(RegistrationFile, reg)
+	if err.HasError() {
+		return E.FailWith("parse registration file", err)
+	}
+	p.user.Registration = reg
+	return nil
+}
+
+func (p *Provider) saveRegistration() E.NestedError {
+	return U.SaveJson(RegistrationFile, p.user.Registration, 0o600)
+}
+
+func (p *Provider) saveCert(cert *certificate.Resource) E.NestedError {
+	err := os.WriteFile(p.cfg.KeyPath, cert.PrivateKey, 0o600) // -rw-------
+	if err != nil {
+		return E.FailWith("write key file", err)
+	}
+	err = os.WriteFile(p.cfg.CertPath, cert.Certificate, 0o644) // -rw-r--r--
+	if err != nil {
+		return E.FailWith("write cert file", err)
+	}
+	return nil
+}
+
+func (p *Provider) certState() CertState {
+	if time.Now().After(p.ShouldRenewOn()) {
+		return CertStateExpired
+	}
+
 	certDomains := make([]string, len(p.certExpiries))
-	copy(wantedDomains, p.cfg.Domains)
+	wantedDomains := make([]string, len(p.cfg.Domains))
 	i := 0
 	for domain := range p.certExpiries {
 		certDomains[i] = domain
 		i++
 	}
-	slices.Sort(wantedDomains)
-	slices.Sort(certDomains)
-	for i, domain := range certDomains {
-		if domain != wantedDomains[i] {
-			return true
-		}
+	copy(wantedDomains, p.cfg.Domains)
+	sort.Strings(wantedDomains)
+	sort.Strings(certDomains)
+
+	if !reflect.DeepEqual(certDomains, wantedDomains) {
+		logger.Debugf("cert domains mismatch: %v != %v", certDomains, p.cfg.Domains)
+		return CertStateMismatch
 	}
-	return false
+
+	return CertStateValid
 }

 func (p *Provider) renewIfNeeded() E.NestedError {
-	if !p.needRenewal() {
-		return E.Nil()
+	switch p.certState() {
+	case CertStateExpired:
+		logger.Info("certs expired, renewing")
+	case CertStateMismatch:
+		logger.Info("cert domains mismatch with config, renewing")
+	default:
+		return nil
 	}

-	p.mutex.Lock()
-	defer p.mutex.Unlock()
-
-	if !p.needRenewal() {
-		return E.Nil()
-	}
-
-	trials := 0
-	for {
-		err := p.ObtainCert()
-		if err.IsNotNil() {
-			return E.Nil()
-		}
-		trials++
-		if trials > 3 {
-			return E.Failure("renew certificate").With(err)
-		}
-		time.Sleep(5 * time.Second)
+	if err := p.ObtainCert(); err.HasError() {
+		return E.FailWith("renew certificate", err)
 	}
+	return nil
 }

 func getCertExpiries(cert *tls.Certificate) (CertExpiries, E.NestedError) {
 	r := make(CertExpiries, len(cert.Certificate))
 	for _, cert := range cert.Certificate {
 		x509Cert, err := E.Check(x509.ParseCertificate(cert))
-		if err.IsNotNil() {
-			return nil, E.Failure("parse certificate").With(err)
+		if err.HasError() {
+			return nil, E.FailWith("parse certificate", err)
 		}
 		if x509Cert.IsCA {
 			continue
 		}
 		r[x509Cert.Subject.CommonName] = x509Cert.NotAfter
-	}
-	return r, E.Nil()
-}
-
-func setOptions[T interface{}](cfg *T, opt M.AutocertProviderOpt) E.NestedError {
-	for k, v := range opt {
-		err := utils.SetFieldFromSnake(cfg, k, v)
-		if err.IsNotNil() {
-			return E.Failure("set autocert option").Subject(k).With(err)
+		for i := range x509Cert.DNSNames {
+			r[x509Cert.DNSNames[i]] = x509Cert.NotAfter
 		}
 	}
-	return E.Nil()
+	return r, nil
 }

 func providerGenerator[CT any, PT challenge.Provider](
 	defaultCfg func() *CT,
 	newProvider func(*CT) (PT, error),
 ) ProviderGenerator {
-	return func(opt M.AutocertProviderOpt) (challenge.Provider, error) {
+	return func(opt M.AutocertProviderOpt) (challenge.Provider, E.NestedError) {
 		cfg := defaultCfg()
-		err := setOptions(cfg, opt)
-		if err.IsNotNil() {
+		err := U.Deserialize(opt, cfg)
+		if err.HasError() {
 			return nil, err
 		}
 		p, err := E.Check(newProvider(cfg))
-		if err.IsNotNil() {
+		if err.HasError() {
 			return nil, err
 		}
 		return p, nil
 	}
 }
-
-var logger = logrus.WithField("module", "autocert")
--- a/src/autocert/provider_test/ovh_test.go
+++ b/src/autocert/provider_test/ovh_test.go
@@ -0,0 +1,50 @@
+package provider_test
+
+import (
+	"testing"
+
+	"github.com/go-acme/lego/v4/providers/dns/ovh"
+	U "github.com/yusing/go-proxy/utils"
+	. "github.com/yusing/go-proxy/utils/testing"
+	"gopkg.in/yaml.v3"
+)
+
+// type Config struct {
+// 	APIEndpoint string
+
+// 	ApplicationKey    string
+// 	ApplicationSecret string
+// 	ConsumerKey       string
+
+// 	OAuth2Config *OAuth2Config
+
+// 	PropagationTimeout time.Duration
+// 	PollingInterval    time.Duration
+// 	TTL                int
+// 	HTTPClient         *http.Client
+// }
+
+func TestOVH(t *testing.T) {
+	cfg := &ovh.Config{}
+	testYaml := `
+api_endpoint: https://eu.api.ovh.com
+application_key: <application_key>
+application_secret: <application_secret>
+consumer_key: <consumer_key>
+oauth2_config:
+  client_id: <client_id>
+  client_secret: <client_secret>
+`
+	cfgExpected := &ovh.Config{
+		APIEndpoint:       "https://eu.api.ovh.com",
+		ApplicationKey:    "<application_key>",
+		ApplicationSecret: "<application_secret>",
+		ConsumerKey:       "<consumer_key>",
+		OAuth2Config:      &ovh.OAuth2Config{ClientID: "<client_id>", ClientSecret: "<client_secret>"},
+	}
+	testYaml = testYaml[1:] // remove first \n
+	opt := make(map[string]any)
+	ExpectNoError(t, yaml.Unmarshal([]byte(testYaml), opt))
+	ExpectTrue(t, U.Deserialize(opt, cfg).NoError())
+	ExpectDeepEqual(t, cfg, cfgExpected)
+}
--- a/src/autocert/state.go
+++ b/src/autocert/state.go
@@ -0,0 +1,9 @@
+package autocert
+
+type CertState int
+
+const (
+	CertStateValid    CertState = 0
+	CertStateExpired  CertState = iota
+	CertStateMismatch CertState = iota
+)
--- a/src/common/args.go
+++ b/src/common/args.go
@@ -12,27 +12,37 @@ type Args struct {
 }

 const (
-	CommandStart    = ""
-	CommandValidate = "validate"
-	CommandReload   = "reload"
+	CommandStart            = ""
+	CommandValidate         = "validate"
+	CommandListConfigs      = "ls-config"
+	CommandListRoutes       = "ls-routes"
+	CommandReload           = "reload"
+	CommandDebugListEntries = "debug-ls-entries"
 )

-var ValidCommands = []string{CommandStart, CommandValidate, CommandReload}
+var ValidCommands = []string{
+	CommandStart,
+	CommandValidate,
+	CommandListConfigs,
+	CommandListRoutes,
+	CommandReload,
+	CommandDebugListEntries,
+}

 func GetArgs() Args {
 	var args Args
 	flag.Parse()
 	args.Command = flag.Arg(0)
-	if err := validateArgs(args.Command, ValidCommands); err.IsNotNil() {
+	if err := validateArg(args.Command); err.HasError() {
 		logrus.Fatal(err)
 	}
 	return args
 }

-func validateArgs[T comparable](arg T, validArgs []T) E.NestedError {
-	for _, v := range validArgs {
+func validateArg(arg string) E.NestedError {
+	for _, v := range ValidCommands {
 		if arg == v {
-			return E.Nil()
+			return nil
 		}
 	}
 	return E.Invalid("argument", arg)
--- a/src/common/constants.go
+++ b/src/common/constants.go
@@ -37,13 +37,6 @@ const (

 const DockerHostFromEnv = "$DOCKER_HOST"

-const (
-	ProxyHTTPPort  = ":80"
-	ProxyHTTPSPort = ":443"
-	APIHTTPPort    = ":8888"
-	PanelHTTPPort  = ":8080"
-)
-
 var WellKnownHTTPPorts = map[uint16]bool{
 	80:   true,
 	8000: true,
@@ -53,17 +46,17 @@ var WellKnownHTTPPorts = map[uint16]bool{
 }

 var (
-	ImageNamePortMapTCP = map[string]int{
-		"postgres":  5432,
-		"mysql":     3306,
-		"mariadb":   3306,
-		"redis":     6379,
-		"mssql":     1433,
-		"memcached": 11211,
-		"rabbitmq":  5672,
-		"mongo":     27017,
-	}
-	ExtraNamePortMapTCP = map[string]int{
+	ServiceNamePortMapTCP = map[string]int{
+		"postgres":         5432,
+		"mysql":            3306,
+		"mariadb":          3306,
+		"redis":            6379,
+		"mssql":            1433,
+		"memcached":        11211,
+		"rabbitmq":         5672,
+		"mongo":            27017,
+		"minecraft-server": 25565,
+
 		"dns":  53,
 		"ssh":  22,
 		"ftp":  21,
@@ -71,20 +64,9 @@ var (
 		"pop3": 110,
 		"imap": 143,
 	}
-	NamePortMapTCP = func() map[string]int {
-		m := make(map[string]int)
-		for k, v := range ImageNamePortMapTCP {
-			m[k] = v
-		}
-		for k, v := range ExtraNamePortMapTCP {
-			m[k] = v
-		}
-		return m
-	}()
 )

-// docker library uses uint16, so followed here
-var ImageNamePortMapHTTP = map[string]uint16{
+var ImageNamePortMapHTTP = map[string]int{
 	"nginx":               80,
 	"httpd":               80,
 	"adguardhome":         3000,
@@ -101,3 +83,10 @@ var ImageNamePortMapHTTP = map[string]uint16{
 	"dockge":              5001,
 	"nginx-proxy-manager": 81,
 }
+
+const (
+	IdleTimeoutDefault = "0"
+	WakeTimeoutDefault = "10s"
+	StopTimeoutDefault = "10s"
+	StopMethodDefault  = "stop"
+)
--- a/src/common/env.go
+++ b/src/common/env.go
@@ -2,22 +2,26 @@ package common

 import (
 	"os"
-	"strings"

-	"github.com/sirupsen/logrus"
+	U "github.com/yusing/go-proxy/utils"
 )

-var NoSchemaValidation = getEnvBool("GOPROXY_NO_SCHEMA_VALIDATION")
-var IsDebug = getEnvBool("GOPROXY_DEBUG")
-
-var LogLevel = func() logrus.Level {
-	if IsDebug {
-		logrus.SetLevel(logrus.DebugLevel)
-	}
-	return logrus.GetLevel()
-}()
+var (
+	NoSchemaValidation = getEnvBool("GOPROXY_NO_SCHEMA_VALIDATION")
+	IsDebug            = getEnvBool("GOPROXY_DEBUG")
+	ProxyHTTPAddr      = getEnv("GOPROXY_HTTP_ADDR", ":80")
+	ProxyHTTPSAddr     = getEnv("GOPROXY_HTTPS_ADDR", ":443")
+	APIHTTPAddr        = getEnv("GOPROXY_API_ADDR", "127.0.0.1:8888")
+)

 func getEnvBool(key string) bool {
-	v := os.Getenv(key)
-	return v == "1" || strings.ToLower(v) == "true" || strings.ToLower(v) == "yes" || strings.ToLower(v) == "on"
+	return U.ParseBool(os.Getenv(key))
+}
+
+func getEnv(key string, defaultValue string) string {
+	value, ok := os.LookupEnv(key)
+	if !ok {
+		value = defaultValue
+	}
+	return value
 }
--- a/src/config/config.go
+++ b/src/config/config.go
@@ -2,6 +2,7 @@ package config

 import (
 	"context"
+	"os"

 	"github.com/sirupsen/logrus"
 	"github.com/yusing/go-proxy/autocert"
@@ -17,32 +18,26 @@ import (
 )

 type Config struct {
-	value *M.Config
-
-	l                logrus.FieldLogger
-	reader           U.Reader
-	proxyProviders   *F.Map[string, *PR.Provider]
+	value            *M.Config
+	proxyProviders   F.Map[string, *PR.Provider]
 	autocertProvider *autocert.Provider

+	l logrus.FieldLogger
+
 	watcher       W.Watcher
 	watcherCtx    context.Context
 	watcherCancel context.CancelFunc
 	reloadReq     chan struct{}
 }

-func New() (*Config, E.NestedError) {
+func Load() (*Config, E.NestedError) {
 	cfg := &Config{
-		l:         logrus.WithField("module", "config"),
-		reader:    U.NewFileReader(common.ConfigPath),
-		watcher:   W.NewFileWatcher(common.ConfigFileName),
-		reloadReq: make(chan struct{}, 1),
+		proxyProviders: F.NewMapOf[string, *PR.Provider](),
+		l:              logrus.WithField("module", "config"),
+		watcher:        W.NewFileWatcher(common.ConfigFileName),
+		reloadReq:      make(chan struct{}, 1),
 	}
-	if err := cfg.load(); err.IsNotNil() {
-		return nil, err
-	}
-	cfg.startProviders()
-	cfg.watchChanges()
-	return cfg, E.Nil()
+	return cfg, cfg.load()
 }

 func Validate(data []byte) E.NestedError {
@@ -58,97 +53,27 @@ func (cfg *Config) GetAutoCertProvider() *autocert.Provider {
 }

 func (cfg *Config) Dispose() {
-	cfg.watcherCancel()
-	cfg.l.Debug("stopped watcher")
+	if cfg.watcherCancel != nil {
+		cfg.watcherCancel()
+		cfg.l.Debug("stopped watcher")
+	}
 	cfg.stopProviders()
-	cfg.l.Debug("stopped providers")
 }

 func (cfg *Config) Reload() E.NestedError {
 	cfg.stopProviders()
-	if err := cfg.load(); err.IsNotNil() {
+	if err := cfg.load(); err.HasError() {
 		return err
 	}
-	cfg.startProviders()
-	return E.Nil()
+	cfg.StartProxyProviders()
+	return nil
 }

-func (cfg *Config) FindRoute(alias string) R.Route {
-	r := cfg.proxyProviders.Find(
-		func(p *PR.Provider) (any, bool) {
-			rs := p.GetCurrentRoutes()
-			if rs.Contains(alias) {
-				return rs.Get(alias), true
-			}
-			return nil, false
-		},
-	)
-	if r == nil {
-		return nil
-	}
-	return r.(R.Route)
+func (cfg *Config) StartProxyProviders() {
+	cfg.controlProviders("start", (*PR.Provider).StartAllRoutes)
 }

-func (cfg *Config) RoutesByAlias() map[string]U.SerializedObject {
-	routes := make(map[string]U.SerializedObject)
-	cfg.proxyProviders.Each(func(p *PR.Provider) {
-		prName := p.GetName()
-		p.GetCurrentRoutes().EachKV(func(a string, r R.Route) {
-			obj, err := U.Serialize(r)
-			if err != nil {
-				cfg.l.Error(err)
-				return
-			}
-			obj["provider"] = prName
-			switch r.(type) {
-			case *R.StreamRoute:
-				obj["type"] = "stream"
-			case *R.HTTPRoute:
-				obj["type"] = "reverse_proxy"
-			default:
-				panic("bug: should not reach here")
-			}
-			routes[a] = obj
-		})
-	})
-	return routes
-}
-
-func (cfg *Config) Statistics() map[string]interface{} {
-	nTotalStreams := 0
-	nTotalRPs := 0
-	providerStats := make(map[string]interface{})
-
-	cfg.proxyProviders.Each(func(p *PR.Provider) {
-		stats := make(map[string]interface{})
-		nStreams := 0
-		nRPs := 0
-		p.GetCurrentRoutes().EachKV(func(a string, r R.Route) {
-			switch r.(type) {
-			case *R.StreamRoute:
-				nStreams++
-				nTotalStreams++
-			case *R.HTTPRoute:
-				nRPs++
-				nTotalRPs++
-			default:
-				panic("bug: should not reach here")
-			}
-		})
-		stats["type"] = p.GetType()
-		stats["num_streams"] = nStreams
-		stats["num_reverse_proxies"] = nRPs
-		providerStats[p.GetName()] = stats
-	})
-
-	return map[string]interface{}{
-		"num_total_streams":         nTotalStreams,
-		"num_total_reverse_proxies": nTotalRPs,
-		"providers":                 providerStats,
-	}
-}
-
-func (cfg *Config) watchChanges() {
+func (cfg *Config) WatchChanges() {
 	cfg.watcherCtx, cfg.watcherCancel = context.WithCancel(context.Background())
 	go func() {
 		for {
@@ -156,7 +81,7 @@ func (cfg *Config) watchChanges() {
 			case <-cfg.watcherCtx.Done():
 				return
 			case <-cfg.reloadReq:
-				if err := cfg.Reload(); err.IsNotNil() {
+				if err := cfg.Reload(); err.HasError() {
 					cfg.l.Error(err)
 				}
 			}
@@ -182,76 +107,171 @@ func (cfg *Config) watchChanges() {
 	}()
 }

-func (cfg *Config) load() E.NestedError {
-	cfg.l.Debug("loading config")
+func (cfg *Config) FindRoute(alias string) R.Route {
+	return F.MapFind(cfg.proxyProviders,
+		func(p *PR.Provider) (R.Route, bool) {
+			if route, ok := p.GetRoute(alias); ok {
+				return route, true
+			}
+			return nil, false
+		},
+	)
+}

-	data, err := cfg.reader.Read()
-	if err.IsNotNil() {
-		return E.Failure("read config").With(err)
+func (cfg *Config) RoutesByAlias() map[string]U.SerializedObject {
+	routes := make(map[string]U.SerializedObject)
+	cfg.forEachRoute(func(alias string, r R.Route, p *PR.Provider) {
+		obj, err := U.Serialize(r)
+		if err.HasError() {
+			cfg.l.Error(err)
+			return
+		}
+		obj["provider"] = p.GetName()
+		obj["type"] = string(r.Type())
+		routes[alias] = obj
+	})
+	return routes
+}
+
+func (cfg *Config) Statistics() map[string]any {
+	nTotalStreams := 0
+	nTotalRPs := 0
+	providerStats := make(map[string]any)
+
+	cfg.forEachRoute(func(alias string, r R.Route, p *PR.Provider) {
+		s, ok := providerStats[p.GetName()]
+		if !ok {
+			s = make(map[string]int)
+		}
+
+		stats := s.(map[string]int)
+		switch r.Type() {
+		case R.RouteTypeStream:
+			stats["num_streams"]++
+			nTotalStreams++
+		case R.RouteTypeReverseProxy:
+			stats["num_reverse_proxies"]++
+			nTotalRPs++
+		default:
+			panic("bug: should not reach here")
+		}
+	})
+
+	return map[string]any{
+		"num_total_streams":         nTotalStreams,
+		"num_total_reverse_proxies": nTotalRPs,
+		"providers":                 providerStats,
 	}
+}

-	model := M.DefaultConfig()
-	if err := E.From(yaml.Unmarshal(data, model)); err.IsNotNil() {
-		return E.Failure("parse config").With(err)
+func (cfg *Config) DumpEntries() map[string]*M.RawEntry {
+	entries := make(map[string]*M.RawEntry)
+	cfg.forEachRoute(func(alias string, r R.Route, p *PR.Provider) {
+		entries[alias] = r.Entry()
+	})
+	return entries
+}
+
+func (cfg *Config) forEachRoute(do func(alias string, r R.Route, p *PR.Provider)) {
+	cfg.proxyProviders.RangeAll(func(_ string, p *PR.Provider) {
+		p.RangeRoutes(func(a string, r R.Route) {
+			do(a, r, p)
+		})
+	})
+}
+
+func (cfg *Config) load() (res E.NestedError) {
+	b := E.NewBuilder("errors loading config")
+	defer b.To(&res)
+
+	cfg.l.Debug("loading config")
+	defer cfg.l.Debug("loaded config")
+
+	data, err := E.Check(os.ReadFile(common.ConfigPath))
+	if err.HasError() {
+		b.Add(E.FailWith("read config", err))
+		return
 	}

 	if !common.NoSchemaValidation {
-		if err = Validate(data); err.IsNotNil() {
-			return err
+		if err = Validate(data); err.HasError() {
+			b.Add(E.FailWith("schema validation", err))
+			return
 		}
 	}

-	warnings := E.NewBuilder("errors loading config")
+	model := M.DefaultConfig()
+	if err := E.From(yaml.Unmarshal(data, model)); err.HasError() {
+		b.Add(E.FailWith("parse config", err))
+		return
+	}

-	cfg.l.Debug("starting autocert")
-	ap, err := autocert.NewConfig(&model.AutoCert).GetProvider()
-	if err.IsNotNil() {
-		warnings.Add(E.Failure("autocert provider").With(err))
-	} else {
-		cfg.l.Debug("started autocert")
-	}
-	cfg.autocertProvider = ap
-
-	cfg.l.Debug("loading providers")
-	cfg.proxyProviders = F.NewMap[string, *PR.Provider]()
-	for _, filename := range model.Providers.Files {
-		p := PR.NewFileProvider(filename)
-		cfg.proxyProviders.Set(p.GetName(), p)
-	}
-	for name, dockerHost := range model.Providers.Docker {
-		p := PR.NewDockerProvider(name, dockerHost)
-		cfg.proxyProviders.Set(p.GetName(), p)
-	}
-	cfg.l.Debug("loaded providers")
+	// errors are non fatal below
+	b.WithSeverity(E.SeverityWarning)
+	b.Add(cfg.initAutoCert(&model.AutoCert))
+	b.Add(cfg.loadProviders(&model.Providers))

 	cfg.value = model
+	return
+}

-	if err := warnings.Build(); err.IsNotNil() {
-		cfg.l.Warn(err)
+func (cfg *Config) initAutoCert(autocertCfg *M.AutoCertConfig) (err E.NestedError) {
+	if cfg.autocertProvider != nil {
+		return
 	}

-	cfg.l.Debug("loaded config")
-	return E.Nil()
+	cfg.l.Debug("initializing autocert")
+	defer cfg.l.Debug("initialized autocert")
+
+	cfg.autocertProvider, err = autocert.NewConfig(autocertCfg).GetProvider()
+	if err.HasError() {
+		err = E.FailWith("autocert provider", err)
+	}
+	return
+}
+
+func (cfg *Config) loadProviders(providers *M.ProxyProviders) (res E.NestedError) {
+	cfg.l.Debug("loading providers")
+	defer cfg.l.Debug("loaded providers")
+
+	b := E.NewBuilder("errors loading providers")
+	defer b.To(&res)
+
+	for _, filename := range providers.Files {
+		p, err := PR.NewFileProvider(filename)
+		if err != nil {
+			b.Add(err.Subject(filename))
+			continue
+		}
+		cfg.proxyProviders.Store(p.GetName(), p)
+		b.Add(p.LoadRoutes().Subject(filename))
+	}
+	for name, dockerHost := range providers.Docker {
+		p, err := PR.NewDockerProvider(name, dockerHost)
+		if err != nil {
+			b.Add(err.Subjectf("%s (%s)", name, dockerHost))
+			continue
+		}
+		cfg.proxyProviders.Store(p.GetName(), p)
+		b.Add(p.LoadRoutes().Subject(dockerHost))
+	}
+	return
 }

 func (cfg *Config) controlProviders(action string, do func(*PR.Provider) E.NestedError) {
 	errors := E.NewBuilder("cannot %s these providers", action)

-	cfg.proxyProviders.EachKVParallel(func(name string, p *PR.Provider) {
-		if err := do(p); err.IsNotNil() {
-			errors.Add(E.From(err).Subject(p))
+	cfg.proxyProviders.RangeAll(func(name string, p *PR.Provider) {
+		if err := do(p); err.HasError() {
+			errors.Add(err.Subject(p))
 		}
 	})

-	if err := errors.Build(); err.IsNotNil() {
+	if err := errors.Build(); err.HasError() {
 		cfg.l.Error(err)
 	}
 }

-func (cfg *Config) startProviders() {
-	cfg.controlProviders("start", (*PR.Provider).StartAllRoutes)
-}
-
 func (cfg *Config) stopProviders() {
 	cfg.controlProviders("stop routes", (*PR.Provider).StopAllRoutes)
 }
--- a/src/docker/client.go
+++ b/src/docker/client.go
@@ -3,6 +3,7 @@ package docker
 import (
 	"net/http"
 	"sync"
+	"sync/atomic"

 	"github.com/docker/cli/cli/connhelper"
 	"github.com/docker/docker/client"
@@ -11,14 +12,63 @@ import (
 	E "github.com/yusing/go-proxy/error"
 )

-type Client = *client.Client
+type Client struct {
+	key      string
+	refCount *atomic.Int32
+	*client.Client
+
+	l logrus.FieldLogger
+}
+
+func ParseDockerHostname(host string) (string, E.NestedError) {
+	switch host {
+	case common.DockerHostFromEnv, "":
+		return "localhost", nil
+	}
+	url, err := E.Check(client.ParseHostURL(host))
+	if err != nil {
+		return "", E.Invalid("host", host).With(err)
+	}
+	return url.Hostname(), nil
+}
+
+func (c Client) DaemonHostname() string {
+	// DaemonHost should always return a valid host
+	hostname, _ := ParseDockerHostname(c.DaemonHost())
+	return hostname
+}
+
+func (c Client) Connected() bool {
+	return c.Client != nil
+}
+
+// if the client is still referenced, this is no-op
+func (c *Client) Close() error {
+	if c.refCount.Add(-1) > 0 {
+		return nil
+	}
+
+	clientMapMu.Lock()
+	defer clientMapMu.Unlock()
+	delete(clientMap, c.key)
+
+	client := c.Client
+	c.Client = nil
+
+	c.l.Debugf("client closed")
+
+	if client != nil {
+		return client.Close()
+	}
+	return nil
+}

 // ConnectClient creates a new Docker client connection to the specified host.
 //
 // Returns existing client if available.
 //
 // Parameters:
-//   - host: the host to connect to (either a URL or "FROM_ENV").
+//   - host: the host to connect to (either a URL or common.DockerHostFromEnv).
 //
 // Returns:
 //   - Client: the Docker client connection.
@@ -29,7 +79,8 @@ func ConnectClient(host string) (Client, E.NestedError) {

 	// check if client exists
 	if client, ok := clientMap[host]; ok {
-		return client, E.Nil()
+		client.refCount.Add(1)
+		return client, nil
 	}

 	// create client
@@ -40,8 +91,8 @@ func ConnectClient(host string) (Client, E.NestedError) {
 		opt = clientOptEnvHost
 	default:
 		helper, err := E.Check(connhelper.GetConnectionHelper(host))
-		if err.IsNotNil() {
-			logger.Fatalf("unexpected error: %s", err)
+		if err.HasError() {
+			return Client{}, E.UnexpectedError(err.Error())
 		}
 		if helper != nil {
 			httpClient := &http.Client{
@@ -65,12 +116,21 @@ func ConnectClient(host string) (Client, E.NestedError) {

 	client, err := E.Check(client.NewClientWithOpts(opt...))

-	if err.IsNotNil() {
-		return nil, err
+	if err.HasError() {
+		return Client{}, err
 	}

-	clientMap[host] = client
-	return client, E.Nil()
+	c := Client{
+		Client:   client,
+		key:      host,
+		refCount: &atomic.Int32{},
+		l:        logger.WithField("docker_client", client.DaemonHost()),
+	}
+	c.refCount.Add(1)
+	c.l.Debugf("client connected")
+
+	clientMap[host] = c
+	return clientMap[host], nil
 }

 func CloseAllClients() {
@@ -83,12 +143,13 @@ func CloseAllClients() {
 	logger.Debug("closed all clients")
 }

-var clientMap map[string]Client = make(map[string]Client)
-var clientMapMu sync.Mutex
+var (
+	clientMap        map[string]Client = make(map[string]Client)
+	clientMapMu      sync.Mutex
+	clientOptEnvHost = []client.Opt{
+		client.WithHostFromEnv(),
+		client.WithAPIVersionNegotiation(),
+	}

-var clientOptEnvHost = []client.Opt{
-	client.WithHostFromEnv(),
-	client.WithAPIVersionNegotiation(),
-}
-
-var logger = logrus.WithField("module", "docker")
+	logger = logrus.WithField("module", "docker")
+)
--- a/src/docker/client_info.go
+++ b/src/docker/client_info.go
@@ -12,35 +12,41 @@ import (
 )

 type ClientInfo struct {
-	Host       string
+	Client     Client
 	Containers []types.Container
 }

-func GetClientInfo(clientHost string) (*ClientInfo, E.NestedError) {
+var listOptions = container.ListOptions{
+	// Filters: filters.NewArgs(
+	// 	filters.Arg("health", "healthy"),
+	// 	filters.Arg("health", "none"),
+	// 	filters.Arg("health", "starting"),
+	// ),
+	All: true,
+}
+
+func GetClientInfo(clientHost string, getContainer bool) (*ClientInfo, E.NestedError) {
 	dockerClient, err := ConnectClient(clientHost)
-	if err.IsNotNil() {
-		return nil, E.Failure("create docker client").With(err)
+	if err.HasError() {
+		return nil, E.FailWith("connect to docker", err)
 	}
+	defer dockerClient.Close()

 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 	defer cancel()

-	containers, err := E.Check(dockerClient.ContainerList(ctx, container.ListOptions{}))
-	if err.IsNotNil() {
-		return nil, E.Failure("list containers").With(err)
+	var containers []types.Container
+	if getContainer {
+		containers, err = E.Check(dockerClient.ContainerList(ctx, listOptions))
+		if err.HasError() {
+			return nil, E.FailWith("list containers", err)
+		}
 	}

-	// extract host from docker client url
-	// since the services being proxied to
-	// should have the same IP as the docker client
-	url, err := E.Check(client.ParseHostURL(dockerClient.DaemonHost()))
-	if err.IsNotNil() {
-		return nil, E.Invalid("host url", dockerClient.DaemonHost()).With(err)
-	}
-	if url.Scheme == "unix" {
-		return &ClientInfo{Host: "localhost", Containers: containers}, E.Nil()
-	}
-	return &ClientInfo{Host: url.Hostname(), Containers: containers}, E.Nil()
+	return &ClientInfo{
+		Client:     dockerClient,
+		Containers: containers,
+	}, nil
 }

 func IsErrConnectionFailed(err error) bool {
--- a/src/docker/container.go
+++ b/src/docker/container.go
@@ -0,0 +1,111 @@
+package docker
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/docker/docker/api/types"
+	U "github.com/yusing/go-proxy/utils"
+)
+
+type ProxyProperties struct {
+	DockerHost    string   `yaml:"-" json:"docker_host"`
+	ContainerName string   `yaml:"-" json:"container_name"`
+	ImageName     string   `yaml:"-" json:"image_name"`
+	Aliases       []string `yaml:"-" json:"aliases"`
+	IsExcluded    bool     `yaml:"-" json:"is_excluded"`
+	FirstPort     string   `yaml:"-" json:"first_port"`
+	IdleTimeout   string   `yaml:"-" json:"idle_timeout"`
+	WakeTimeout   string   `yaml:"-" json:"wake_timeout"`
+	StopMethod    string   `yaml:"-" json:"stop_method"`
+	StopTimeout   string   `yaml:"-" json:"stop_timeout"` // stop_method = "stop" only
+	StopSignal    string   `yaml:"-" json:"stop_signal"`  // stop_method = "stop" | "kill" only
+	Running       bool     `yaml:"-" json:"running"`
+}
+
+type Container struct {
+	*types.Container
+	*ProxyProperties
+}
+
+func FromDocker(c *types.Container, dockerHost string) (res Container) {
+	res.Container = c
+	res.ProxyProperties = &ProxyProperties{
+		DockerHost:    dockerHost,
+		ContainerName: res.getName(),
+		ImageName:     res.getImageName(),
+		Aliases:       res.getAliases(),
+		IsExcluded:    U.ParseBool(res.getDeleteLabel(LableExclude)),
+		FirstPort:     res.firstPortOrEmpty(),
+		IdleTimeout:   res.getDeleteLabel(LabelIdleTimeout),
+		WakeTimeout:   res.getDeleteLabel(LabelWakeTimeout),
+		StopMethod:    res.getDeleteLabel(LabelStopMethod),
+		StopTimeout:   res.getDeleteLabel(LabelStopTimeout),
+		StopSignal:    res.getDeleteLabel(LabelStopSignal),
+		Running:       c.Status == "running" || c.State == "running",
+	}
+	return
+}
+
+func FromJson(json types.ContainerJSON, dockerHost string) Container {
+	ports := make([]types.Port, 0)
+	for k, bindings := range json.NetworkSettings.Ports {
+		for _, v := range bindings {
+			pubPort, _ := strconv.Atoi(v.HostPort)
+			privPort, _ := strconv.Atoi(k.Port())
+			ports = append(ports, types.Port{
+				IP:          v.HostIP,
+				PublicPort:  uint16(pubPort),
+				PrivatePort: uint16(privPort),
+			})
+		}
+	}
+	return FromDocker(&types.Container{
+		ID:     json.ID,
+		Names:  []string{json.Name},
+		Image:  json.Image,
+		Ports:  ports,
+		Labels: json.Config.Labels,
+		State:  json.State.Status,
+		Status: json.State.Status,
+	}, dockerHost)
+}
+
+func (c Container) getDeleteLabel(label string) string {
+	if l, ok := c.Labels[label]; ok {
+		delete(c.Labels, label)
+		return l
+	}
+	return ""
+}
+
+func (c Container) getAliases() []string {
+	if l := c.getDeleteLabel(LableAliases); l != "" {
+		return U.CommaSeperatedList(l)
+	} else {
+		return []string{c.getName()}
+	}
+}
+
+func (c Container) getName() string {
+	return strings.TrimPrefix(c.Names[0], "/")
+}
+
+func (c Container) getImageName() string {
+	colonSep := strings.Split(c.Image, ":")
+	slashSep := strings.Split(colonSep[0], "/")
+	return slashSep[len(slashSep)-1]
+}
+
+func (c Container) firstPortOrEmpty() string {
+	if len(c.Ports) == 0 {
+		return ""
+	}
+	for _, p := range c.Ports {
+		if p.PublicPort != 0 {
+			return fmt.Sprint(p.PublicPort)
+		}
+	}
+	return ""
+}
--- a/src/docker/homepage_label.go
+++ b/src/docker/homepage_label.go
@@ -9,7 +9,7 @@ type (
 		Icon         string
 		Category     string
 		Description  string
-		WidgetConfig map[string]interface{}
+		WidgetConfig map[string]any
 	}
 )

--- a/src/docker/idlewatcher/round_trip.go
+++ b/src/docker/idlewatcher/round_trip.go
@@ -0,0 +1,14 @@
+package idlewatcher
+
+import "net/http"
+
+type (
+	roundTripper struct {
+		patched roundTripFunc
+	}
+	roundTripFunc func(*http.Request) (*http.Response, error)
+)
+
+func (rt roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	return rt.patched(req)
+}
--- a/src/docker/idlewatcher/watcher.go
+++ b/src/docker/idlewatcher/watcher.go
@@ -0,0 +1,357 @@
+package idlewatcher
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/docker/docker/api/types/container"
+	"github.com/sirupsen/logrus"
+	D "github.com/yusing/go-proxy/docker"
+	E "github.com/yusing/go-proxy/error"
+	P "github.com/yusing/go-proxy/proxy"
+	PT "github.com/yusing/go-proxy/proxy/fields"
+	W "github.com/yusing/go-proxy/watcher"
+	event "github.com/yusing/go-proxy/watcher/events"
+)
+
+type watcher struct {
+	*P.ReverseProxyEntry
+
+	client D.Client
+
+	refCount atomic.Int32
+
+	stopByMethod StopCallback
+	wakeCh       chan struct{}
+	wakeDone     chan E.NestedError
+	running      atomic.Bool
+
+	ctx    context.Context
+	cancel context.CancelFunc
+
+	l logrus.FieldLogger
+}
+
+type (
+	WakeDone     <-chan error
+	WakeFunc     func() WakeDone
+	StopCallback func() E.NestedError
+)
+
+func Register(entry *P.ReverseProxyEntry) (*watcher, E.NestedError) {
+	failure := E.Failure("idle_watcher register")
+
+	if entry.IdleTimeout == 0 {
+		return nil, failure.With(E.Invalid("idle_timeout", 0))
+	}
+
+	watcherMapMu.Lock()
+	defer watcherMapMu.Unlock()
+
+	if w, ok := watcherMap[entry.ContainerName]; ok {
+		w.refCount.Add(1)
+		w.ReverseProxyEntry = entry
+		return w, nil
+	}
+
+	client, err := D.ConnectClient(entry.DockerHost)
+	if err.HasError() {
+		return nil, failure.With(err)
+	}
+
+	w := &watcher{
+		ReverseProxyEntry: entry,
+		client:            client,
+		wakeCh:            make(chan struct{}, 1),
+		wakeDone:          make(chan E.NestedError, 1),
+		l:                 logger.WithField("container", entry.ContainerName),
+	}
+	w.refCount.Add(1)
+	w.running.Store(entry.ContainerRunning)
+	w.stopByMethod = w.getStopCallback()
+
+	watcherMap[w.ContainerName] = w
+
+	go func() {
+		newWatcherCh <- w
+	}()
+
+	return w, nil
+}
+
+// If the container is not registered, this is no-op
+func Unregister(containerName string) {
+	watcherMapMu.Lock()
+	defer watcherMapMu.Unlock()
+
+	if w, ok := watcherMap[containerName]; ok {
+		if w.refCount.Add(-1) > 0 {
+			return
+		}
+		if w.cancel != nil {
+			w.cancel()
+		}
+		w.client.Close()
+		delete(watcherMap, containerName)
+	}
+}
+
+func Start() {
+	logger.Debug("started")
+	defer logger.Debug("stopped")
+
+	mainLoopCtx, mainLoopCancel = context.WithCancel(context.Background())
+
+	defer mainLoopWg.Wait()
+
+	for {
+		select {
+		case <-mainLoopCtx.Done():
+			return
+		case w := <-newWatcherCh:
+			w.l.Debug("registered")
+			mainLoopWg.Add(1)
+			go func() {
+				w.watch()
+				Unregister(w.ContainerName)
+				w.l.Debug("unregistered")
+				mainLoopWg.Done()
+			}()
+		}
+	}
+}
+
+func Stop() {
+	mainLoopCancel()
+	mainLoopWg.Wait()
+}
+
+func (w *watcher) PatchRoundTripper(rtp http.RoundTripper) roundTripper {
+	return roundTripper{patched: func(r *http.Request) (*http.Response, error) {
+		return w.roundTrip(rtp.RoundTrip, r)
+	}}
+}
+
+func (w *watcher) roundTrip(origRoundTrip roundTripFunc, req *http.Request) (*http.Response, error) {
+	w.wakeCh <- struct{}{}
+
+	if w.running.Load() {
+		return origRoundTrip(req)
+	}
+	timeout := time.After(w.WakeTimeout)
+
+	for {
+		if w.running.Load() {
+			return origRoundTrip(req)
+		}
+		select {
+		case <-req.Context().Done():
+			return nil, req.Context().Err()
+		case err := <-w.wakeDone:
+			if err != nil {
+				return nil, err.Error()
+			}
+		case <-timeout:
+			return getLoadingResponse(), nil
+		}
+	}
+}
+
+func (w *watcher) containerStop() error {
+	return w.client.ContainerStop(w.ctx, w.ContainerName, container.StopOptions{
+		Signal:  string(w.StopSignal),
+		Timeout: &w.StopTimeout})
+}
+
+func (w *watcher) containerPause() error {
+	return w.client.ContainerPause(w.ctx, w.ContainerName)
+}
+
+func (w *watcher) containerKill() error {
+	return w.client.ContainerKill(w.ctx, w.ContainerName, string(w.StopSignal))
+}
+
+func (w *watcher) containerUnpause() error {
+	return w.client.ContainerUnpause(w.ctx, w.ContainerName)
+}
+
+func (w *watcher) containerStart() error {
+	return w.client.ContainerStart(w.ctx, w.ContainerName, container.StartOptions{})
+}
+
+func (w *watcher) containerStatus() (string, E.NestedError) {
+	json, err := w.client.ContainerInspect(w.ctx, w.ContainerName)
+	if err != nil {
+		return "", E.FailWith("inspect container", err)
+	}
+	return json.State.Status, nil
+}
+
+func (w *watcher) wakeIfStopped() E.NestedError {
+	status, err := w.containerStatus()
+
+	if err.HasError() {
+		return err
+	}
+	// "created", "running", "paused", "restarting", "removing", "exited", or "dead"
+	switch status {
+	case "exited", "dead":
+		return E.From(w.containerStart())
+	case "paused":
+		return E.From(w.containerUnpause())
+	case "running":
+		w.running.Store(true)
+		return nil
+	default:
+		return E.Unexpected("container state", status)
+	}
+}
+
+func (w *watcher) getStopCallback() StopCallback {
+	var cb func() error
+	switch w.StopMethod {
+	case PT.StopMethodPause:
+		cb = w.containerPause
+	case PT.StopMethodStop:
+		cb = w.containerStop
+	case PT.StopMethodKill:
+		cb = w.containerKill
+	default:
+		panic("should not reach here")
+	}
+	return func() E.NestedError {
+		status, err := w.containerStatus()
+		if err.HasError() {
+			return err
+		}
+		if status != "running" {
+			return nil
+		}
+		return E.From(cb())
+	}
+}
+
+func (w *watcher) watch() {
+	watcherCtx, watcherCancel := context.WithCancel(context.Background())
+	w.ctx = watcherCtx
+	w.cancel = watcherCancel
+
+	dockerWatcher := W.NewDockerWatcherWithClient(w.client)
+
+	defer close(w.wakeCh)
+
+	dockerEventCh, dockerEventErrCh := dockerWatcher.EventsWithOptions(w.ctx, W.DockerListOptions{
+		Filters: W.NewDockerFilter(
+			W.DockerFilterContainer,
+			W.DockerrFilterContainerName(w.ContainerName),
+			W.DockerFilterStart,
+			W.DockerFilterStop,
+			W.DockerFilterDie,
+			W.DockerFilterKill,
+			W.DockerFilterPause,
+			W.DockerFilterUnpause,
+		),
+	})
+
+	ticker := time.NewTicker(w.IdleTimeout)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-mainLoopCtx.Done():
+			w.cancel()
+		case <-watcherCtx.Done():
+			w.l.Debug("stopped")
+			return
+		case err := <-dockerEventErrCh:
+			if err != nil && err.IsNot(context.Canceled) {
+				w.l.Error(E.FailWith("docker watcher", err))
+			}
+		case e := <-dockerEventCh:
+			switch e.Action {
+			case event.ActionDockerStartUnpause:
+				w.running.Store(true)
+				w.l.Infof("%s %s", e.ActorName, e.Action)
+			case event.ActionDockerStopPause:
+				w.running.Store(false)
+				w.l.Infof("%s %s", e.ActorName, e.Action)
+			}
+		case <-ticker.C:
+			w.l.Debug("timeout")
+			ticker.Stop()
+			if err := w.stopByMethod(); err != nil && err.IsNot(context.Canceled) {
+				w.l.Error(E.FailWith("stop", err).Extraf("stop method: %s", w.StopMethod))
+			}
+		case <-w.wakeCh:
+			w.l.Debug("wake signal received")
+			ticker.Reset(w.IdleTimeout)
+			err := w.wakeIfStopped()
+			if err != nil && err.IsNot(context.Canceled) {
+				w.l.Error(E.FailWith("wake", err))
+			}
+			select {
+			case w.wakeDone <- err: // this is passed to roundtrip
+			default:
+			}
+		}
+	}
+}
+
+func getLoadingResponse() *http.Response {
+	return &http.Response{
+		StatusCode: http.StatusAccepted,
+		Header: http.Header{
+			"Content-Type": {"text/html"},
+			"Cache-Control": {
+				"no-cache",
+				"no-store",
+				"must-revalidate",
+			},
+		},
+		Body:          io.NopCloser(bytes.NewReader((loadingPage))),
+		ContentLength: int64(len(loadingPage)),
+	}
+}
+
+var (
+	mainLoopCtx    context.Context
+	mainLoopCancel context.CancelFunc
+	mainLoopWg     sync.WaitGroup
+
+	watcherMap   = make(map[string]*watcher)
+	watcherMapMu sync.Mutex
+
+	newWatcherCh = make(chan *watcher)
+
+	logger = logrus.WithField("module", "idle_watcher")
+
+	loadingPage = []byte(`
+<!DOCTYPE html>
+<html>
+<head>
+	<meta charset="UTF-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<title>Loading...</title>
+</head>
+<body>
+	<script>
+		window.onload = function() {
+			setTimeout(function() {
+				window.location.reload()
+			}, 1000)
+            // fetch(window.location.href)
+			// 	.then(resp => resp.text())
+			// 	.then(data => { document.body.innerHTML = data; })
+			// 	.catch(err => { document.body.innerHTML = 'Error: ' + err; });
+        };
+	</script>
+	<h1>Container is starting... Please wait</h1>
+</body>
+</html>
+`[1:])
+)
--- a/src/docker/inspect.go
+++ b/src/docker/inspect.go
@@ -0,0 +1,19 @@
+package docker
+
+import (
+	"context"
+	"time"
+
+	E "github.com/yusing/go-proxy/error"
+)
+
+func (c Client) Inspect(containerID string) (Container, E.NestedError) {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	json, err := c.ContainerInspect(ctx, containerID)
+	if err != nil {
+		return Container{}, E.From(err)
+	}
+	return FromJson(json, c.key), nil
+}
--- a/src/docker/label.go
+++ b/src/docker/label.go
@@ -23,7 +23,7 @@ type Label struct {
 // Returns:
 //   - error: an error if the field does not exist.
 func ApplyLabel[T any](obj *T, l *Label) E.NestedError {
-	return U.SetFieldFromSnake(obj, l.Attribute, l.Value)
+	return U.Deserialize(map[string]any{l.Attribute: l.Value}, obj)
 }

 type ValueParser func(string) (any, E.NestedError)
@@ -36,7 +36,7 @@ func ParseLabel(label string, value string) (*Label, E.NestedError) {
 		return &Label{
 			Namespace: label,
 			Value:     value,
-		}, E.Nil()
+		}, nil
 	}

 	l := &Label{
@@ -54,20 +54,20 @@ func ParseLabel(label string, value string) (*Label, E.NestedError) {
 	// find if namespace has value parser
 	pm, ok := labelValueParserMap[l.Namespace]
 	if !ok {
-		return l, E.Nil()
+		return l, nil
 	}
 	// find if attribute has value parser
 	p, ok := pm[l.Attribute]
 	if !ok {
-		return l, E.Nil()
+		return l, nil
 	}
 	// try to parse value
 	v, err := p(value)
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
 	l.Value = v
-	return l, E.Nil()
+	return l, nil
 }

 func RegisterNamespace(namespace string, pm ValueParserMap) {
--- a/src/docker/label_parser.go
+++ b/src/docker/label_parser.go
@@ -10,7 +10,7 @@ import (
 func yamlListParser(value string) (any, E.NestedError) {
 	value = strings.TrimSpace(value)
 	if value == "" {
-		return []string{}, E.Nil()
+		return []string{}, nil
 	}
 	var data []string
 	err := E.From(yaml.Unmarshal([]byte(value), &data))
@@ -34,23 +34,15 @@ func yamlStringMappingParser(value string) (any, E.NestedError) {
 			h[key] = val
 		}
 	}
-	return h, E.Nil()
-}
-
-func commaSepParser(value string) (any, E.NestedError) {
-	v := strings.Split(value, ",")
-	for i := range v {
-		v[i] = strings.TrimSpace(v[i])
-	}
-	return v, E.Nil()
+	return h, nil
 }

 func boolParser(value string) (any, E.NestedError) {
 	switch strings.ToLower(value) {
 	case "true", "yes", "1":
-		return true, E.Nil()
+		return true, nil
 	case "false", "no", "0":
-		return false, E.Nil()
+		return false, nil
 	default:
 		return nil, E.Invalid("boolean value", value)
 	}
@@ -60,7 +52,6 @@ const NSProxy = "proxy"

 var _ = func() int {
 	RegisterNamespace(NSProxy, ValueParserMap{
-		"aliases":       commaSepParser,
 		"path_patterns": yamlListParser,
 		"set_headers":   yamlStringMappingParser,
 		"hide_headers":  yamlListParser,
--- a/src/docker/label_parser_test.go
+++ b/src/docker/label_parser_test.go
@@ -7,6 +7,7 @@ import (
 	"testing"

 	E "github.com/yusing/go-proxy/error"
+	. "github.com/yusing/go-proxy/utils/testing"
 )

 func makeLabel(namespace string, alias string, field string) string {
@@ -18,29 +19,23 @@ func TestHomePageLabel(t *testing.T) {
 	field := "ip"
 	v := "bar"
 	pl, err := ParseLabel(makeLabel(NSHomePage, alias, field), v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
+	ExpectNoError(t, err.Error())
 	if pl.Target != alias {
-		t.Errorf("expected alias=%s, got %s", alias, pl.Target)
+		t.Errorf("Expected alias=%s, got %s", alias, pl.Target)
 	}
 	if pl.Attribute != field {
-		t.Errorf("expected field=%s, got %s", field, pl.Target)
+		t.Errorf("Expected field=%s, got %s", field, pl.Target)
 	}
 	if pl.Value != v {
-		t.Errorf("expected value=%q, got %s", v, pl.Value)
+		t.Errorf("Expected value=%q, got %s", v, pl.Value)
 	}
 }

 func TestStringProxyLabel(t *testing.T) {
 	v := "bar"
 	pl, err := ParseLabel(makeLabel(NSProxy, "foo", "ip"), v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
-	if pl.Value != v {
-		t.Errorf("expected value=%q, got %s", v, pl.Value)
-	}
+	ExpectNoError(t, err.Error())
+	ExpectEqual(t, pl.Value.(string), v)
 }

 func TestBoolProxyLabelValid(t *testing.T) {
@@ -57,12 +52,8 @@ func TestBoolProxyLabelValid(t *testing.T) {

 	for k, v := range tests {
 		pl, err := ParseLabel(makeLabel(NSProxy, "foo", "no_tls_verify"), k)
-		if err.IsNotNil() {
-			t.Errorf("expected err=nil, got %s", err.Error())
-		}
-		if pl.Value != v {
-			t.Errorf("expected value=%v, got %v", v, pl.Value)
-		}
+		ExpectNoError(t, err.Error())
+		ExpectEqual(t, pl.Value.(bool), v)
 	}
 }

@@ -71,7 +62,7 @@ func TestBoolProxyLabelInvalid(t *testing.T) {
 	field := "no_tls_verify"
 	_, err := ParseLabel(makeLabel(NSProxy, alias, field), "invalid")
 	if !err.Is(E.ErrInvalid) {
-		t.Errorf("expected err InvalidProxyLabel, got %s", err.Error())
+		t.Errorf("Expected err InvalidProxyLabel, got %s", err.Error())
 	}
 }

@@ -87,17 +78,12 @@ X-Custom-Header2: boo`
 	}

 	pl, err := ParseLabel(makeLabel(NSProxy, "foo", "set_headers"), v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
-	hGot, ok := pl.Value.(map[string]string)
-	if !ok {
-		t.Errorf("value is not a map[string]string, but %T", pl.Value)
-		return
-	}
-	if !reflect.DeepEqual(h, hGot) {
-		t.Errorf("expected %v, got %v", h, hGot)
+	ExpectNoError(t, err.Error())
+	hGot := ExpectType[map[string]string](t, pl.Value)
+	if hGot != nil && !reflect.DeepEqual(h, hGot) {
+		t.Errorf("Expected %v, got %v", h, hGot)
 	}
+
 }

 func TestSetHeaderProxyLabelInvalid(t *testing.T) {
@@ -110,7 +96,7 @@ func TestSetHeaderProxyLabelInvalid(t *testing.T) {
 	for _, v := range tests {
 		_, err := ParseLabel(makeLabel(NSProxy, "foo", "set_headers"), v)
 		if !err.Is(E.ErrInvalid) {
-			t.Errorf("expected invalid err for %q, got %s", v, err.Error())
+			t.Errorf("Expected invalid err for %q, got %s", v, err.Error())
 		}
 	}
 }
@@ -123,47 +109,32 @@ func TestHideHeadersProxyLabel(t *testing.T) {
 `
 	v = strings.TrimPrefix(v, "\n")
 	pl, err := ParseLabel(makeLabel(NSProxy, "foo", "hide_headers"), v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
-	sGot, ok := pl.Value.([]string)
+	ExpectNoError(t, err.Error())
+	sGot := ExpectType[[]string](t, pl.Value)
 	sWant := []string{"X-Custom-Header1", "X-Custom-Header2", "X-Custom-Header3"}
-	if !ok {
-		t.Errorf("value is not []string, but %T", pl.Value)
-	}
-	if !reflect.DeepEqual(sGot, sWant) {
-		t.Errorf("expected %q, got %q", sWant, sGot)
+	if sGot != nil {
+		ExpectDeepEqual(t, sGot, sWant)
 	}
 }

-func TestCommaSepProxyLabelSingle(t *testing.T) {
-	v := "a"
-	pl, err := ParseLabel("proxy.aliases", v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
-	sGot, ok := pl.Value.([]string)
-	sWant := []string{"a"}
-	if !ok {
-		t.Errorf("value is not []string, but %T", pl.Value)
-	}
-	if !reflect.DeepEqual(sGot, sWant) {
-		t.Errorf("expected %q, got %q", sWant, sGot)
-	}
-}
+// func TestCommaSepProxyLabelSingle(t *testing.T) {
+// 	v := "a"
+// 	pl, err := ParseLabel("proxy.aliases", v)
+// 	ExpectNoError(t, err)
+// 	sGot := ExpectType[[]string](t, pl.Value)
+// 	sWant := []string{"a"}
+// 	if sGot != nil {
+// 		ExpectEqual(t, sGot, sWant)
+// 	}
+// }

-func TestCommaSepProxyLabelMulti(t *testing.T) {
-	v := "X-Custom-Header1, X-Custom-Header2,X-Custom-Header3"
-	pl, err := ParseLabel("proxy.aliases", v)
-	if err.IsNotNil() {
-		t.Errorf("expected err=nil, got %s", err.Error())
-	}
-	sGot, ok := pl.Value.([]string)
-	sWant := []string{"X-Custom-Header1", "X-Custom-Header2", "X-Custom-Header3"}
-	if !ok {
-		t.Errorf("value is not []string, but %T", pl.Value)
-	}
-	if !reflect.DeepEqual(sGot, sWant) {
-		t.Errorf("expected %q, got %q", sWant, sGot)
-	}
-}
+// func TestCommaSepProxyLabelMulti(t *testing.T) {
+// 	v := "X-Custom-Header1, X-Custom-Header2,X-Custom-Header3"
+// 	pl, err := ParseLabel("proxy.aliases", v)
+// 	ExpectNoError(t, err)
+// 	sGot := ExpectType[[]string](t, pl.Value)
+// 	sWant := []string{"X-Custom-Header1", "X-Custom-Header2", "X-Custom-Header3"}
+// 	if sGot != nil {
+// 		ExpectEqual(t, sGot, sWant)
+// 	}
+// }
--- a/src/docker/labels.go
+++ b/src/docker/labels.go
@@ -0,0 +1,13 @@
+package docker
+
+const (
+	WildcardAlias = "*"
+
+	LableAliases     = NSProxy + ".aliases"
+	LableExclude     = NSProxy + ".exclude"
+	LabelIdleTimeout = NSProxy + ".idle_timeout"
+	LabelWakeTimeout = NSProxy + ".wake_timeout"
+	LabelStopMethod  = NSProxy + ".stop_method"
+	LabelStopTimeout = NSProxy + ".stop_timeout"
+	LabelStopSignal  = NSProxy + ".stop_signal"
+)
--- a/src/error/builder.go
+++ b/src/error/builder.go
@@ -6,16 +6,23 @@ import (
 )

 type Builder struct {
-	message string
-	errors  []error
+	*builder
+}
+
+type builder struct {
+	message  string
+	errors   []NestedError
+	severity Severity
 	sync.Mutex
 }

-func NewBuilder(format string, args ...any) *Builder {
-	return &Builder{message: fmt.Sprintf(format, args...)}
+func NewBuilder(format string, args ...any) Builder {
+	return Builder{&builder{message: fmt.Sprintf(format, args...)}}
 }

-func (b *Builder) Add(err error) *Builder {
+// adding nil / nil is no-op,
+// you may safely pass expressions returning error to it
+func (b Builder) Add(err NestedError) Builder {
 	if err != nil {
 		b.Lock()
 		b.errors = append(b.errors, err)
@@ -24,8 +31,17 @@ func (b *Builder) Add(err error) *Builder {
 	return b
 }

-func (b *Builder) Addf(format string, args ...any) *Builder {
-	return b.Add(fmt.Errorf(format, args...))
+func (b Builder) AddE(err error) Builder {
+	return b.Add(From(err))
+}
+
+func (b Builder) Addf(format string, args ...any) Builder {
+	return b.Add(errorf(format, args...))
+}
+
+func (b Builder) WithSeverity(s Severity) Builder {
+	b.severity = s
+	return b
 }

 // Build builds a NestedError based on the errors collected in the Builder.
@@ -35,9 +51,21 @@ func (b *Builder) Addf(format string, args ...any) *Builder {
 //
 // Returns:
 //   - NestedError: the built NestedError.
-func (b *Builder) Build() NestedError {
+func (b Builder) Build() NestedError {
 	if len(b.errors) == 0 {
-		return Nil()
+		return nil
 	}
-	return Join(b.message, b.errors...)
+	return Join(b.message, b.errors...).Severity(b.severity)
+}
+
+func (b Builder) To(ptr *NestedError) {
+	if *ptr == nil {
+		*ptr = b.Build()
+	} else {
+		**ptr = *b.Build()
+	}
+}
+
+func (b Builder) HasError() bool {
+	return len(b.errors) > 0
 }
--- a/src/error/builder_test.go
+++ b/src/error/builder_test.go
@@ -1,27 +1,52 @@
 package error

-import "testing"
+import (
+	"testing"

-func TestBuilder(t *testing.T) {
+	. "github.com/yusing/go-proxy/utils/testing"
+)
+
+func TestBuilderEmpty(t *testing.T) {
+	eb := NewBuilder("qwer")
+	ExpectTrue(t, eb.Build() == nil)
+	ExpectTrue(t, eb.Build().NoError())
+	ExpectFalse(t, eb.HasError())
+}
+
+func TestBuilderAddNil(t *testing.T) {
+	eb := NewBuilder("asdf")
+	var err NestedError
+	for range 3 {
+		eb.Add(nil)
+	}
+	for range 3 {
+		eb.Add(err)
+	}
+	ExpectTrue(t, eb.Build() == nil)
+	ExpectTrue(t, eb.Build().NoError())
+	ExpectFalse(t, eb.HasError())
+}
+
+func TestBuilderNested(t *testing.T) {
 	eb := NewBuilder("error occurred")
 	eb.Add(Failure("Action 1").With(Invalid("Inner", "1")).With(Invalid("Inner", "2")))
 	eb.Add(Failure("Action 2").With(Invalid("Inner", "3")))

-	got := eb.Build().Error()
+	got := eb.Build().String()
 	expected1 :=
 		(`error occurred:
  - Action 1 failed:
-    - invalid Inner - 1
-    - invalid Inner - 2
+    - invalid Inner: 1
+    - invalid Inner: 2
  - Action 2 failed:
-    - invalid Inner - 3`)
+    - invalid Inner: 3`)
 	expected2 :=
 		(`error occurred:
  - Action 1 failed:
-    - invalid Inner - 2
-    - invalid Inner - 1
+    - invalid Inner: 2
+    - invalid Inner: 1
  - Action 2 failed:
-    - invalid Inner - 3`)
+    - invalid Inner: 3`)
 	if got != expected1 && got != expected2 {
 		t.Errorf("expected \n%s, got \n%s", expected1, got)
 	}
--- a/src/error/error.go
+++ b/src/error/error.go
@@ -7,36 +7,26 @@ import (
 )

 type (
-	// NestedError is an error with an inner error
-	// and a list of extra nested errors.
-	//
-	// It is designed to be non nil.
-	//
-	// You can use it to join multiple errors,
-	// or to set a inner reason for a nested error.
-	//
-	// When a method returns both valid values and errors,
-	// You should return (Slice/Map, NestedError).
-	// Caller then should handle the nested error,
-	// and continue with the valid values.
-	NestedError struct {
-		subject string
-		err     error // can be nil
-		extras  []NestedError
+	NestedError = *nestedError
+	nestedError struct {
+		subject  string
+		err      error
+		extras   []nestedError
+		severity Severity
 	}
+	Severity uint8
 )

-func Nil() NestedError { return NestedError{} }
+const (
+	SeverityFatal Severity = iota
+	SeverityWarning
+)

 func From(err error) NestedError {
-	switch err := err.(type) {
-	case nil:
-		return Nil()
-	case NestedError:
-		return err
-	default:
-		return NestedError{err: err}
+	if IsNil(err) {
+		return nil
 	}
+	return &nestedError{err: err}
 }

 // Check is a helper function that
@@ -45,42 +35,86 @@ func Check[T any](obj T, err error) (T, NestedError) {
 	return obj, From(err)
 }

-func Join(message string, err ...error) NestedError {
-	extras := make([]NestedError, 0, len(err))
+func Join(message string, err ...NestedError) NestedError {
+	extras := make([]nestedError, len(err))
 	nErr := 0
-	for _, e := range err {
-		if err == nil {
+	for i, e := range err {
+		if e == nil {
 			continue
 		}
-		extras = append(extras, From(e))
+		extras[i] = *e
 		nErr += 1
 	}
 	if nErr == 0 {
-		return Nil()
+		return nil
 	}
-	return NestedError{
+	return &nestedError{
 		err:    errors.New(message),
 		extras: extras,
 	}
 }

-func (ne NestedError) Error() string {
+func JoinE(message string, err ...error) NestedError {
+	b := NewBuilder(message)
+	for _, e := range err {
+		b.AddE(e)
+	}
+	return b.Build()
+}
+
+func IsNil(err error) bool {
+	return err == nil
+}
+
+func IsNotNil(err error) bool {
+	return err != nil
+}
+
+func (ne NestedError) String() string {
 	var buf strings.Builder
 	ne.writeToSB(&buf, 0, "")
 	return buf.String()
 }

 func (ne NestedError) Is(err error) bool {
-	return errors.Is(ne.err, err)
+	if ne == nil {
+		return err == nil
+	}
+	// return errors.Is(ne.err, err)
+	if errors.Is(ne.err, err) {
+		return true
+	}
+	for _, e := range ne.extras {
+		if e.Is(err) {
+			return true
+		}
+	}
+	return false
+}
+
+func (ne NestedError) IsNot(err error) bool {
+	return !ne.Is(err)
+}
+
+func (ne NestedError) Error() error {
+	if ne == nil {
+		return nil
+	}
+	return ne.buildError(0, "")
 }

 func (ne NestedError) With(s any) NestedError {
+	if ne == nil {
+		return ne
+	}
 	var msg string
 	switch ss := s.(type) {
 	case nil:
 		return ne
-	case error:
+	case NestedError:
 		return ne.withError(ss)
+	case error:
+		return ne.withError(From(ss))
 	case string:
 		msg = ss
 	case fmt.Stringer:
@@ -88,14 +122,17 @@ func (ne NestedError) With(s any) NestedError {
 	default:
 		msg = fmt.Sprint(s)
 	}
-	return ne.withError(errors.New(msg))
+	return ne.withError(From(errors.New(msg)))
 }

 func (ne NestedError) Extraf(format string, args ...any) NestedError {
-	return ne.With(fmt.Errorf(format, args...))
+	return ne.With(errorf(format, args...))
 }

 func (ne NestedError) Subject(s any) NestedError {
+	if ne == nil {
+		return ne
+	}
 	switch ss := s.(type) {
 	case string:
 		ne.subject = ss
@@ -108,6 +145,9 @@ func (ne NestedError) Subject(s any) NestedError {
 }

 func (ne NestedError) Subjectf(format string, args ...any) NestedError {
+	if ne == nil {
+		return ne
+	}
 	if strings.Contains(format, "%q") {
 		panic("Subjectf format should not contain %q")
 	}
@@ -118,39 +158,63 @@ func (ne NestedError) Subjectf(format string, args ...any) NestedError {
 	return ne
 }

-func (ne NestedError) IsNil() bool {
-	return ne.err == nil
+func (ne NestedError) Severity(s Severity) NestedError {
+	if ne == nil {
+		return ne
+	}
+	ne.severity = s
+	return ne
 }

-func (ne NestedError) IsNotNil() bool {
-	return ne.err != nil
+func (ne NestedError) Warn() NestedError {
+	if ne == nil {
+		return ne
+	}
+	ne.severity = SeverityWarning
+	return ne
+}
+
+func (ne NestedError) NoError() bool {
+	return ne == nil
+}
+
+func (ne NestedError) HasError() bool {
+	return ne != nil
+}
+
+func (ne NestedError) IsFatal() bool {
+	return ne != nil && ne.severity == SeverityFatal
+}
+
+func (ne NestedError) IsWarning() bool {
+	return ne != nil && ne.severity == SeverityWarning
 }

 func errorf(format string, args ...any) NestedError {
 	return From(fmt.Errorf(format, args...))
 }

-func (ne NestedError) withError(err error) NestedError {
-	ne.extras = append(ne.extras, From(err))
+func (ne NestedError) withError(err NestedError) NestedError {
+	if ne != nil && err != nil {
+		ne.extras = append(ne.extras, *err)
+	}
 	return ne
 }

-func (ne *NestedError) writeToSB(sb *strings.Builder, level int, prefix string) {
-	ne.writeIndents(sb, level)
+func (ne NestedError) writeToSB(sb *strings.Builder, level int, prefix string) {
+	for i := 0; i < level; i++ {
+		sb.WriteString("  ")
+	}
 	sb.WriteString(prefix)

-	if ne.IsNil() {
+	if ne.NoError() {
 		sb.WriteString("nil")
 		return
 	}

 	sb.WriteString(ne.err.Error())
 	if ne.subject != "" {
-		if ne.err != nil {
-			sb.WriteString(fmt.Sprintf(" for %q", ne.subject))
-		} else {
-			sb.WriteString(fmt.Sprint(ne.subject))
-		}
+		sb.WriteString(fmt.Sprintf(" for %q", ne.subject))
 	}
 	if len(ne.extras) > 0 {
 		sb.WriteRune(':')
@@ -161,8 +225,32 @@ func (ne *NestedError) writeToSB(sb *strings.Builder, level int, prefix string)
 	}
 }

-func (ne *NestedError) writeIndents(sb *strings.Builder, level int) {
+func (ne NestedError) buildError(level int, prefix string) error {
+	var res error
+	var sb strings.Builder
+
 	for i := 0; i < level; i++ {
 		sb.WriteString("  ")
 	}
+	sb.WriteString(prefix)
+
+	if ne.NoError() {
+		sb.WriteString("nil")
+		return errors.New(sb.String())
+	}
+
+	res = fmt.Errorf("%s%w", sb.String(), ne.err)
+	sb.Reset()
+
+	if ne.subject != "" {
+		sb.WriteString(fmt.Sprintf(" for %q", ne.subject))
+	}
+	if len(ne.extras) > 0 {
+		sb.WriteRune(':')
+		res = fmt.Errorf("%w%s", res, sb.String())
+		for _, extra := range ne.extras {
+			res = errors.Join(res, extra.buildError(level+1, "- "))
+		}
+	}
+	return res
 }
--- a/src/error/error_test.go
+++ b/src/error/error_test.go
@@ -1,46 +1,74 @@
-package error
+package error_test

 import (
+	"errors"
 	"testing"
+
+	. "github.com/yusing/go-proxy/error"
+	. "github.com/yusing/go-proxy/utils/testing"
 )

-func AssertEq[T comparable](t *testing.T, got, want T) {
-	t.Helper()
-	if got != want {
-		t.Errorf("expected:\n%v, got\n%v", want, got)
-	}
-}
-
 func TestErrorIs(t *testing.T) {
-	AssertEq(t, Failure("foo").Is(ErrFailure), true)
-	AssertEq(t, Failure("foo").With("bar").Is(ErrFailure), true)
-	AssertEq(t, Failure("foo").With("bar").Is(ErrInvalid), false)
-	AssertEq(t, Failure("foo").With("bar").With("baz").Is(ErrInvalid), false)
+	ExpectTrue(t, Failure("foo").Is(ErrFailure))
+	ExpectTrue(t, Failure("foo").With("bar").Is(ErrFailure))
+	ExpectFalse(t, Failure("foo").With("bar").Is(ErrInvalid))
+	ExpectFalse(t, Failure("foo").With("bar").With("baz").Is(ErrInvalid))

-	AssertEq(t, Invalid("foo", "bar").Is(ErrInvalid), true)
-	AssertEq(t, Invalid("foo", "bar").Is(ErrFailure), false)
+	ExpectTrue(t, Invalid("foo", "bar").Is(ErrInvalid))
+	ExpectFalse(t, Invalid("foo", "bar").Is(ErrFailure))

-	AssertEq(t, Nil().Is(nil), true)
-	AssertEq(t, Nil().Is(ErrInvalid), false)
-	AssertEq(t, Invalid("foo", "bar").Is(nil), false)
+	ExpectFalse(t, Invalid("foo", "bar").Is(nil))
+
+	ExpectTrue(t, errors.Is(Failure("foo").Error(), ErrFailure))
+	ExpectTrue(t, errors.Is(Failure("foo").With(Invalid("bar", "baz")).Error(), ErrInvalid))
+	ExpectTrue(t, errors.Is(Failure("foo").With(Invalid("bar", "baz")).Error(), ErrFailure))
+	ExpectFalse(t, errors.Is(Failure("foo").With(Invalid("bar", "baz")).Error(), ErrNotExists))
 }

-func TestNil(t *testing.T) {
-	AssertEq(t, Nil().IsNil(), true)
-	AssertEq(t, Nil().IsNotNil(), false)
-	AssertEq(t, Nil().Error(), "nil")
+func TestErrorNestedIs(t *testing.T) {
+	var err NestedError
+	ExpectTrue(t, err.Is(nil))
+
+	err = Failure("some reason")
+	ExpectTrue(t, err.Is(ErrFailure))
+	ExpectFalse(t, err.Is(ErrAlreadyExist))
+
+	err.With(AlreadyExist("something", ""))
+	ExpectTrue(t, err.Is(ErrFailure))
+	ExpectTrue(t, err.Is(ErrAlreadyExist))
+	ExpectFalse(t, err.Is(ErrInvalid))
+}
+
+func TestIsNil(t *testing.T) {
+	var err NestedError
+	ExpectTrue(t, err.Is(nil))
+	ExpectFalse(t, err.HasError())
+	ExpectTrue(t, err == nil)
+	ExpectTrue(t, err.NoError())
+
+	eb := NewBuilder("")
+	returnNil := func() error {
+		return eb.Build().Error()
+	}
+	ExpectTrue(t, IsNil(returnNil()))
+	ExpectTrue(t, returnNil() == nil)
+
+	ExpectTrue(t, (err.
+		Subject("any").
+		With("something").
+		Extraf("foo %s", "bar")) == nil)
 }

 func TestErrorSimple(t *testing.T) {
 	ne := Failure("foo bar")
-	AssertEq(t, ne.Error(), "foo bar failed")
+	ExpectEqual(t, ne.String(), "foo bar failed")
 	ne = ne.Subject("baz")
-	AssertEq(t, ne.Error(), "foo bar failed for \"baz\"")
+	ExpectEqual(t, ne.String(), "foo bar failed for \"baz\"")
 }

 func TestErrorWith(t *testing.T) {
 	ne := Failure("foo").With("bar").With("baz")
-	AssertEq(t, ne.Error(), "foo failed:\n  - bar\n  - baz")
+	ExpectEqual(t, ne.String(), "foo failed:\n  - bar\n  - baz")
 }

 func TestErrorNested(t *testing.T) {
@@ -76,5 +104,6 @@ func TestErrorNested(t *testing.T) {
      - inner3 failed for "action 3":
        - 3
        - 3`
-	AssertEq(t, ne.Error(), want)
+	ExpectEqual(t, ne.String(), want)
+	ExpectEqual(t, ne.Error().Error(), want)
 }
--- a/src/error/errors.go
+++ b/src/error/errors.go
@@ -5,33 +5,48 @@ import (
 )

 var (
-	ErrFailure     = stderrors.New("failed")
-	ErrInvalid     = stderrors.New("invalid")
-	ErrUnsupported = stderrors.New("unsupported")
-	ErrNotExists   = stderrors.New("does not exist")
-	ErrDuplicated  = stderrors.New("duplicated")
+	ErrFailure      = stderrors.New("failed")
+	ErrInvalid      = stderrors.New("invalid")
+	ErrUnsupported  = stderrors.New("unsupported")
+	ErrUnexpected   = stderrors.New("unexpected")
+	ErrNotExists    = stderrors.New("does not exist")
+	ErrAlreadyExist = stderrors.New("already exist")
 )

+const fmtSubjectWhat = "%w %v: %v"
+
 func Failure(what string) NestedError {
 	return errorf("%s %w", what, ErrFailure)
 }

-func FailureWhy(what string, why string) NestedError {
+func FailedWhy(what string, why string) NestedError {
 	return errorf("%s %w because %s", what, ErrFailure, why)
 }

+func FailWith(what string, err any) NestedError {
+	return Failure(what).With(err)
+}
+
 func Invalid(subject, what any) NestedError {
-	return errorf("%w %v - %v", ErrInvalid, subject, what)
+	return errorf(fmtSubjectWhat, ErrInvalid, subject, what)
 }

 func Unsupported(subject, what any) NestedError {
-	return errorf("%w %v - %v", ErrUnsupported, subject, what)
+	return errorf(fmtSubjectWhat, ErrUnsupported, subject, what)
 }

-func NotExists(subject, what any) NestedError {
-	return errorf("%s %v - %v", subject, ErrNotExists, what)
+func Unexpected(subject, what any) NestedError {
+	return errorf(fmtSubjectWhat, ErrUnexpected, subject, what)
 }

-func Duplicated(subject, what any) NestedError {
-	return errorf("%w %v: %v", ErrDuplicated, subject, what)
+func UnexpectedError(err error) NestedError {
+	return errorf("%w error: %w", ErrUnexpected, err)
+}
+
+func NotExist(subject, what any) NestedError {
+	return errorf("%v %w: %v", subject, ErrNotExists, what)
+}
+
+func AlreadyExist(subject, what any) NestedError {
+	return errorf("%v %w: %v", subject, ErrAlreadyExist, what)
 }
--- a/src/go.mod
+++ b/src/go.mod
@@ -1,14 +1,13 @@
 module github.com/yusing/go-proxy

-go 1.22
-
-toolchain go1.23.1
+go 1.22.0

 require (
-	github.com/docker/cli v27.2.1+incompatible
-	github.com/docker/docker v27.2.1+incompatible
+	github.com/docker/cli v27.3.1+incompatible
+	github.com/docker/docker v27.3.1+incompatible
 	github.com/fsnotify/fsnotify v1.7.0
 	github.com/go-acme/lego/v4 v4.18.0
+	github.com/puzpuzpuz/xsync/v3 v3.4.0
 	github.com/santhosh-tekuri/jsonschema v1.2.4
 	github.com/sirupsen/logrus v1.9.3
 	golang.org/x/net v0.29.0
@@ -36,6 +35,7 @@ require (
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.0 // indirect
+	github.com/ovh/go-ovh v1.6.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.55.0 // indirect
 	go.opentelemetry.io/otel v1.30.0 // indirect
@@ -45,10 +45,12 @@ require (
 	go.opentelemetry.io/otel/trace v1.30.0 // indirect
 	golang.org/x/crypto v0.27.0 // indirect
 	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/oauth2 v0.23.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.25.0 // indirect
 	golang.org/x/text v0.18.0 // indirect
 	golang.org/x/time v0.6.0 // indirect
 	golang.org/x/tools v0.25.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gotest.tools/v3 v3.5.1 // indirect
 )
--- a/src/go.sum
+++ b/src/go.sum
@@ -13,10 +13,10 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 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 v27.2.1+incompatible h1:U5BPtiD0viUzjGAjV1p0MGB8eVA3L3cbIrnyWmSJI70=
-github.com/docker/cli v27.2.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
-github.com/docker/docker v27.2.1+incompatible h1:fQdiLfW7VLscyoeYEBz7/J8soYFDZV1u6VW6gJEjNMI=
-github.com/docker/docker v27.2.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/cli v27.3.1+incompatible h1:qEGdFBF3Xu6SCvCYhc7CzaQTlBmqDuzxPDpigSyeKQQ=
+github.com/docker/cli v27.3.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
+github.com/docker/docker v27.3.1+incompatible h1:KttF0XoteNTicmUtBO0L2tP+J7FGRFTjaEF4k6WdhfI=
+github.com/docker/docker v27.3.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c=
 github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
@@ -45,12 +45,16 @@ github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD
 github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.0 h1:Wqo399gCIufwto+VfwCSvsnfGpF/w5E9CNxSwbpD6No=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.0/go.mod h1:qmOFXW2epJhM0qSnUUYpldc7gVz2KMQwJ/QYCDIa7XU=
+github.com/jarcoal/httpmock v1.3.0 h1:2RJ8GP0IIaWwcC9Fp2BmVi8Kog3v2Hn7VXM3fTd+nuc=
+github.com/jarcoal/httpmock v1.3.0/go.mod h1:3yb8rc4BI7TCBhFY8ng0gjuLKJNquuDNiPaZjnENuYg=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/maxatome/go-testdeep v1.12.0 h1:Ql7Go8Tg0C1D/uMMX59LAoYK7LffeJQ6X2T04nTH68g=
+github.com/maxatome/go-testdeep v1.12.0/go.mod h1:lPZc/HAcJMP92l7yI6TRz1aZN5URwUBUAfUNvrclaNM=
 github.com/miekg/dns v1.1.62 h1:cN8OuEF1/x5Rq6Np+h1epln8OiyPWV+lROx9LxcGgIQ=
 github.com/miekg/dns v1.1.62/go.mod h1:mvDlcItzm+br7MToIKqkglaGhlFMHJ9DTNNWONWXbNQ=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
@@ -63,10 +67,14 @@ github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=
 github.com/opencontainers/image-spec v1.1.0/go.mod h1:W4s4sFTMaBeK1BQLXbG4AdM2szdn85PY75RI83NrTrM=
+github.com/ovh/go-ovh v1.6.0 h1:ixLOwxQdzYDx296sXcgS35TOPEahJkpjMGtzPadCjQI=
+github.com/ovh/go-ovh v1.6.0/go.mod h1:cTVDnl94z4tl8pP1uZ/8jlVxntjSIf09bNcQ5TJSC7c=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/puzpuzpuz/xsync/v3 v3.4.0 h1:DuVBAdXuGFHv8adVXjWWZ63pJq+NRXOWVXlKDBZ+mJ4=
+github.com/puzpuzpuz/xsync/v3 v3.4.0/go.mod h1:VjzYrABPabuM4KyBh1Ftq6u8nhwY5tBPKP9jpmh0nnA=
 github.com/rogpeppe/go-internal v1.8.1 h1:geMPLpDpQOgVyCg5z5GoRwLHepNdb71NXb67XFkP+Eg=
 github.com/rogpeppe/go-internal v1.8.1/go.mod h1:JeRgkft04UBgHMgCIwADu4Pn6Mtm5d4nPKWu0nJ5d+o=
 github.com/santhosh-tekuri/jsonschema v1.2.4 h1:hNhW8e7t+H1vgY+1QeEQpveR6D4+OwKPXCfD2aieJis=
@@ -110,6 +118,8 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
 golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
+golang.org/x/oauth2 v0.23.0 h1:PbgcYx2W7i4LvjJWEbf0ngHV6qJYr86PkAV3bXdLEbs=
+golang.org/x/oauth2 v0.23.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -149,6 +159,8 @@ google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHh
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/src/main.go
+++ b/src/main.go
@@ -2,10 +2,12 @@ package main

 import (
 	"context"
+	"encoding/json"
+	"io"
+	"log"
 	"net/http"
 	"os"
 	"os/signal"
-	"runtime"
 	"sync"
 	"syscall"
 	"time"
@@ -16,6 +18,7 @@ import (
 	"github.com/yusing/go-proxy/common"
 	"github.com/yusing/go-proxy/config"
 	"github.com/yusing/go-proxy/docker"
+	"github.com/yusing/go-proxy/docker/idlewatcher"
 	E "github.com/yusing/go-proxy/error"
 	R "github.com/yusing/go-proxy/route"
 	"github.com/yusing/go-proxy/server"
@@ -23,8 +26,6 @@ import (
 )

 func main() {
-	runtime.GOMAXPROCS(runtime.NumCPU())
-
 	args := common.GetArgs()
 	l := logrus.WithField("module", "main")

@@ -32,15 +33,20 @@ func main() {
 		logrus.SetLevel(logrus.DebugLevel)
 	}

-	logrus.SetFormatter(&logrus.TextFormatter{
-		DisableSorting:  true,
-		FullTimestamp:   true,
-		ForceColors:     true,
-		TimestampFormat: "01-02 15:04:05",
-	})
+	if args.Command != common.CommandStart {
+		logrus.SetOutput(io.Discard)
+	} else {
+		logrus.SetFormatter(&logrus.TextFormatter{
+			DisableSorting:         true,
+			DisableLevelTruncation: true,
+			FullTimestamp:          true,
+			ForceColors:            true,
+			TimestampFormat:        "01-02 15:04:05",
+		})
+	}

 	if args.Command == common.CommandReload {
-		if err := apiUtils.ReloadServer(); err.IsNotNil() {
+		if err := apiUtils.ReloadServer(); err.HasError() {
 			l.Fatal(err)
 		}
 		return
@@ -50,27 +56,47 @@ func main() {

 	// exit if only validate config
 	if args.Command == common.CommandValidate {
-		var err E.NestedError
-		data, err := E.Check(os.ReadFile(common.ConfigPath))
-		if err.IsNotNil() {
-			l.WithError(err).Fatalf("config error")
+		data, err := os.ReadFile(common.ConfigPath)
+		if err == nil {
+			err = config.Validate(data).Error()
 		}
-		if err = config.Validate(data); err.IsNotNil() {
-			l.WithError(err).Fatalf("config error")
+		if err != nil {
+			log.Fatal("config error: ", err)
 		}
-		l.Printf("config OK")
+		log.Print("config OK")
 		return
 	}

-	cfg, err := config.New()
-	if err.IsNotNil() {
-		l.Fatalf("config error: %s", err)
+	cfg, err := config.Load()
+	if err.IsFatal() {
+		log.Fatal(err)
 	}

-	onShutdown.Add(func() {
-		docker.CloseAllClients()
-		cfg.Dispose()
-	})
+	if args.Command == common.CommandListConfigs {
+		printJSON(cfg.Value())
+		return
+	}
+
+	if args.Command == common.CommandListRoutes {
+		printJSON(cfg.RoutesByAlias())
+		return
+	}
+
+	if args.Command == common.CommandDebugListEntries {
+		printJSON(cfg.DumpEntries())
+		return
+	}
+
+	cfg.StartProxyProviders()
+
+	if err.HasError() {
+		l.Warn(err)
+	}
+
+	cfg.WatchChanges()
+
+	onShutdown.Add(docker.CloseAllClients)
+	onShutdown.Add(cfg.Dispose)

 	sig := make(chan os.Signal, 1)
 	signal.Notify(sig, syscall.SIGINT)
@@ -80,37 +106,42 @@ func main() {
 	autocert := cfg.GetAutoCertProvider()

 	if autocert != nil {
-		err = autocert.LoadCert()
-
-		if err.IsNotNil() {
-			l.Error(err)
-			l.Info("Now attempting to obtain a new certificate...")
-			if err = autocert.ObtainCert(); err.IsNotNil() {
-				ctx, certRenewalCancel := context.WithCancel(context.Background())
-				go autocert.ScheduleRenewal(ctx)
-				onShutdown.Add(certRenewalCancel)
-			} else {
+		if err = autocert.LoadCert(); err.HasError() {
+			if !err.Is(os.ErrNotExist) { // ignore if cert doesn't exist
+				l.Error(err)
+			}
+			l.Debug("obtaining cert due to error loading cert")
+			if err = autocert.ObtainCert(); err.HasError() {
 				l.Warn(err)
 			}
-		} else {
-			for name, expiry := range autocert.GetExpiries() {
-				l.Infof("certificate %q: expire on %s", name, expiry)
-			}
 		}
+
+		if err.NoError() {
+			ctx, certRenewalCancel := context.WithCancel(context.Background())
+			go autocert.ScheduleRenewal(ctx)
+			onShutdown.Add(certRenewalCancel)
+		}
+
+		for _, expiry := range autocert.GetExpiries() {
+			l.Infof("certificate expire on %s", expiry)
+			break
+		}
+	} else {
+		l.Info("autocert not configured")
 	}

 	proxyServer := server.InitProxyServer(server.Options{
 		Name:            "proxy",
 		CertProvider:    autocert,
-		HTTPPort:        common.ProxyHTTPPort,
-		HTTPSPort:       common.ProxyHTTPSPort,
+		HTTPAddr:        common.ProxyHTTPAddr,
+		HTTPSAddr:       common.ProxyHTTPSAddr,
 		Handler:         http.HandlerFunc(R.ProxyHandler),
 		RedirectToHTTPS: cfg.Value().RedirectToHTTPS,
 	})
 	apiServer := server.InitAPIServer(server.Options{
 		Name:            "api",
 		CertProvider:    autocert,
-		HTTPPort:        common.APIHTTPPort,
+		HTTPAddr:        common.APIHTTPAddr,
 		Handler:         api.NewHandler(cfg),
 		RedirectToHTTPS: cfg.Value().RedirectToHTTPS,
 	})
@@ -120,6 +151,9 @@ func main() {
 	onShutdown.Add(proxyServer.Stop)
 	onShutdown.Add(apiServer.Stop)

+	go idlewatcher.Start()
+	onShutdown.Add(idlewatcher.Stop)
+
 	// wait for signal
 	<-sig

@@ -140,10 +174,20 @@ func main() {
 		close(done)
 	}()

+	timeout := time.After(time.Duration(cfg.Value().TimeoutShutdown) * time.Second)
 	select {
 	case <-done:
 		logrus.Info("shutdown complete")
-	case <-time.After(time.Duration(cfg.Value().TimeoutShutdown) * time.Second):
+	case <-timeout:
 		logrus.Info("timeout waiting for shutdown")
 	}
 }
+
+func printJSON(obj any) {
+	j, err := E.Check(json.Marshal(obj))
+	if err.HasError() {
+		logrus.Fatal(err)
+	}
+	rawLogger := log.New(os.Stdout, "", 0)
+	rawLogger.Printf("%s", j) // raw output for convenience using "jq"
+}
--- a/src/models/autocert_config.go
+++ b/src/models/autocert_config.go
@@ -9,5 +9,5 @@ type (
 		Provider string              `json:"provider"`
 		Options  AutocertProviderOpt `yaml:",flow" json:"options"`
 	}
-	AutocertProviderOpt map[string]string
+	AutocertProviderOpt map[string]any
 )
--- a/src/models/proxy_entry.go
+++ b/src/models/proxy_entry.go
@@ -1,50 +0,0 @@
-package model
-
-import (
-	"strings"
-
-	F "github.com/yusing/go-proxy/utils/functional"
-)
-
-type (
-	ProxyEntry struct {
-		Alias        string            `yaml:"-" json:"-"`
-		Scheme       string            `yaml:"scheme" json:"scheme"`
-		Host         string            `yaml:"host" json:"host"`
-		Port         string            `yaml:"port" json:"port"`
-		NoTLSVerify  bool              `yaml:"no_tls_verify" json:"no_tls_verify"` // https proxy only
-		PathPatterns []string          `yaml:"path_patterns" json:"path_patterns"` // http(s) proxy only
-		SetHeaders   map[string]string `yaml:"set_headers" json:"set_headers"`     // http(s) proxy only
-		HideHeaders  []string          `yaml:"hide_headers" json:"hide_headers"`   // http(s) proxy only
-	}
-
-	ProxyEntries = *F.Map[string, *ProxyEntry]
-)
-
-var NewProxyEntries = F.NewMap[string, *ProxyEntry]
-
-func (e *ProxyEntry) SetDefaults() {
-	if e.Scheme == "" {
-		if strings.ContainsRune(e.Port, ':') {
-			e.Scheme = "tcp"
-		} else {
-			switch e.Port {
-			case "443", "8443":
-				e.Scheme = "https"
-			default:
-				e.Scheme = "http"
-			}
-		}
-	}
-	if e.Host == "" {
-		e.Host = "localhost"
-	}
-	if e.Port == "" {
-		switch e.Scheme {
-		case "http":
-			e.Port = "80"
-		case "https":
-			e.Port = "443"
-		}
-	}
-}
--- a/src/models/raw_entry.go
+++ b/src/models/raw_entry.go
@@ -0,0 +1,90 @@
+package model
+
+import (
+	"strconv"
+	"strings"
+
+	. "github.com/yusing/go-proxy/common"
+	D "github.com/yusing/go-proxy/docker"
+	F "github.com/yusing/go-proxy/utils/functional"
+)
+
+type (
+	RawEntry struct {
+		// raw entry object before validation
+		// loaded from docker labels or yaml file
+		Alias        string            `yaml:"-" json:"-"`
+		Scheme       string            `yaml:"scheme" json:"scheme"`
+		Host         string            `yaml:"host" json:"host"`
+		Port         string            `yaml:"port" json:"port"`
+		NoTLSVerify  bool              `yaml:"no_tls_verify" json:"no_tls_verify"` // https proxy only
+		PathPatterns []string          `yaml:"path_patterns" json:"path_patterns"` // http(s) proxy only
+		SetHeaders   map[string]string `yaml:"set_headers" json:"set_headers"`     // http(s) proxy only
+		HideHeaders  []string          `yaml:"hide_headers" json:"hide_headers"`   // http(s) proxy only
+
+		/* Docker only */
+		*D.ProxyProperties `yaml:"-" json:"proxy_properties"`
+	}
+
+	RawEntries = F.Map[string, *RawEntry]
+)
+
+var NewProxyEntries = F.NewMapOf[string, *RawEntry]
+
+func (e *RawEntry) SetDefaults() {
+	if e.ProxyProperties == nil {
+		e.ProxyProperties = &D.ProxyProperties{}
+	}
+
+	if e.Scheme == "" {
+		switch {
+		case strings.ContainsRune(e.Port, ':'):
+			e.Scheme = "tcp"
+		case e.ProxyProperties != nil:
+			if _, ok := ServiceNamePortMapTCP[e.ImageName]; ok {
+				e.Scheme = "tcp"
+			}
+		}
+	}
+
+	if e.Scheme == "" {
+		switch e.Port {
+		case "443", "8443":
+			e.Scheme = "https"
+		default:
+			e.Scheme = "http"
+		}
+	}
+	if e.Host == "" {
+		e.Host = "localhost"
+	}
+	if e.Port == "" {
+		e.Port = e.FirstPort
+	}
+	if e.Port == "" {
+		if port, ok := ServiceNamePortMapTCP[e.Port]; ok {
+			e.Port = strconv.Itoa(port)
+		} else if port, ok := ImageNamePortMapHTTP[e.Port]; ok {
+			e.Port = strconv.Itoa(port)
+		} else {
+			switch e.Scheme {
+			case "http":
+				e.Port = "80"
+			case "https":
+				e.Port = "443"
+			}
+		}
+	}
+	if e.IdleTimeout == "" {
+		e.IdleTimeout = IdleTimeoutDefault
+	}
+	if e.WakeTimeout == "" {
+		e.WakeTimeout = WakeTimeoutDefault
+	}
+	if e.StopTimeout == "" {
+		e.StopTimeout = StopTimeoutDefault
+	}
+	if e.StopMethod == "" {
+		e.StopMethod = StopMethodDefault
+	}
+}
--- a/src/proxy/constants.go
+++ b/src/proxy/constants.go
@@ -1,10 +1,5 @@
 package proxy

-var (
-	PathMode_Forward     = "forward"
-	PathMode_RemovedPath = ""
-)
-
 const (
 	StreamType_UDP string = "udp"
 	StreamType_TCP string = "tcp"
@@ -19,4 +14,3 @@ var (
 	HTTPSchemes   = []string{"http", "https"}
 	ValidSchemes  = append(StreamSchemes, HTTPSchemes...)
 )
-
--- a/src/proxy/entry.go
+++ b/src/proxy/entry.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"time"

 	E "github.com/yusing/go-proxy/error"
 	M "github.com/yusing/go-proxy/models"
@@ -11,16 +12,24 @@ import (
 )

 type (
-	Entry struct { // real model after validation
+	ReverseProxyEntry struct { // real model after validation
 		Alias        T.Alias
 		Scheme       T.Scheme
-		Host         T.Host
-		Port         T.Port
 		URL          *url.URL
 		NoTLSVerify  bool
 		PathPatterns T.PathPatterns
 		SetHeaders   http.Header
 		HideHeaders  []string
+
+		/* Docker only */
+		IdleTimeout      time.Duration
+		WakeTimeout      time.Duration
+		StopMethod       T.StopMethod
+		StopTimeout      int
+		StopSignal       T.Signal
+		DockerHost       string
+		ContainerName    string
+		ContainerRunning bool
 	}
 	StreamEntry struct {
 		Alias  T.Alias        `json:"alias"`
@@ -30,69 +39,106 @@ type (
 	}
 )

-func NewEntry(m *M.ProxyEntry) (any, E.NestedError) {
+func (rp *ReverseProxyEntry) UseIdleWatcher() bool {
+	return rp.IdleTimeout > 0 && rp.DockerHost != ""
+}
+
+func ValidateEntry(m *M.RawEntry) (any, E.NestedError) {
 	m.SetDefaults()
 	scheme, err := T.NewScheme(m.Scheme)
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
+
+	var entry any
+	e := E.NewBuilder("error validating proxy entry")
 	if scheme.IsStream() {
-		return validateStreamEntry(m)
+		entry = validateStreamEntry(m, e)
+	} else {
+		entry = validateRPEntry(m, scheme, e)
 	}
-	return validateEntry(m, scheme)
+	if err := e.Build(); err.HasError() {
+		return nil, err
+	}
+	return entry, nil
 }

-func validateEntry(m *M.ProxyEntry, s T.Scheme) (*Entry, E.NestedError) {
-	host, err := T.NewHost(m.Host)
-	if err.IsNotNil() {
-		return nil, err
-	}
-	port, err := T.NewPort(m.Port)
-	if err.IsNotNil() {
-		return nil, err
-	}
-	pathPatterns, err := T.NewPathPatterns(m.PathPatterns)
-	if err.IsNotNil() {
-		return nil, err
-	}
-	setHeaders, err := T.NewHTTPHeaders(m.SetHeaders)
-	if err.IsNotNil() {
-		return nil, err
-	}
+func validateRPEntry(m *M.RawEntry, s T.Scheme, b E.Builder) *ReverseProxyEntry {
+	var stopTimeOut time.Duration
+
+	host, err := T.ValidateHost(m.Host)
+	b.Add(err)
+
+	port, err := T.ValidatePort(m.Port)
+	b.Add(err)
+
+	pathPatterns, err := T.ValidatePathPatterns(m.PathPatterns)
+	b.Add(err)
+
+	setHeaders, err := T.ValidateHTTPHeaders(m.SetHeaders)
+	b.Add(err)
+
 	url, err := E.Check(url.Parse(fmt.Sprintf("%s://%s:%d", s, host, port)))
-	if err.IsNotNil() {
-		return nil, err
+	b.Add(err)
+
+	idleTimeout, err := T.ValidateDurationPostitive(m.IdleTimeout)
+	b.Add(err)
+
+	wakeTimeout, err := T.ValidateDurationPostitive(m.WakeTimeout)
+	b.Add(err)
+
+	stopMethod, err := T.ValidateStopMethod(m.StopMethod)
+	b.Add(err)
+
+	if stopMethod == T.StopMethodStop {
+		stopTimeOut, err = T.ValidateDurationPostitive(m.StopTimeout)
+		b.Add(err)
+	}
+
+	stopSignal, err := T.ValidateSignal(m.StopSignal)
+	b.Add(err)
+
+	if err.HasError() {
+		return nil
+	}
+
+	return &ReverseProxyEntry{
+		Alias:            T.NewAlias(m.Alias),
+		Scheme:           s,
+		URL:              url,
+		NoTLSVerify:      m.NoTLSVerify,
+		PathPatterns:     pathPatterns,
+		SetHeaders:       setHeaders,
+		HideHeaders:      m.HideHeaders,
+		IdleTimeout:      idleTimeout,
+		WakeTimeout:      wakeTimeout,
+		StopMethod:       stopMethod,
+		StopTimeout:      int(stopTimeOut.Seconds()), // docker api takes integer seconds for timeout argument
+		StopSignal:       stopSignal,
+		DockerHost:       m.DockerHost,
+		ContainerName:    m.ContainerName,
+		ContainerRunning: m.Running,
 	}
-	return &Entry{
-		Alias:        T.NewAlias(m.Alias),
-		Scheme:       s,
-		Host:         host,
-		Port:         port,
-		URL:          url,
-		NoTLSVerify:  m.NoTLSVerify,
-		PathPatterns: pathPatterns,
-		SetHeaders:   setHeaders,
-		HideHeaders:  m.HideHeaders,
-	}, E.Nil()
 }

-func validateStreamEntry(m *M.ProxyEntry) (*StreamEntry, E.NestedError) {
-	host, err := T.NewHost(m.Host)
-	if err.IsNotNil() {
-		return nil, err
-	}
-	port, err := T.NewStreamPort(m.Port)
-	if err.IsNotNil() {
-		return nil, err
-	}
-	scheme, err := T.NewStreamScheme(m.Scheme)
-	if err.IsNotNil() {
-		return nil, err
+func validateStreamEntry(m *M.RawEntry, b E.Builder) *StreamEntry {
+	host, err := T.ValidateHost(m.Host)
+	b.Add(err)
+
+	port, err := T.ValidateStreamPort(m.Port)
+	b.Add(err)
+
+	scheme, err := T.ValidateStreamScheme(m.Scheme)
+	b.Add(err)
+
+	if b.HasError() {
+		return nil
 	}
+
 	return &StreamEntry{
 		Alias:  T.NewAlias(m.Alias),
 		Scheme: *scheme,
 		Host:   host,
 		Port:   port,
-	}, E.Nil()
+	}
 }
--- a/src/proxy/fields/alias.go
+++ b/src/proxy/fields/alias.go
@@ -1,23 +1,6 @@
 package fields

-import (
-	"strings"
-
-	F "github.com/yusing/go-proxy/utils/functional"
+type (
+	Alias    string
+	NewAlias = Alias
 )
-
-type Alias string
-type Aliases struct{ *F.Slice[Alias] }
-
-func NewAlias(s string) Alias {
-	return Alias(s)
-}
-
-func NewAliases(s string) Aliases {
-	split := strings.Split(s, ",")
-	a := Aliases{F.NewSliceN[Alias](len(split))}
-	for i, v := range split {
-		a.Set(i, NewAlias(v))
-	}
-	return a
-}
--- a/src/proxy/fields/headers.go
+++ b/src/proxy/fields/headers.go
@@ -7,7 +7,7 @@ import (
 	E "github.com/yusing/go-proxy/error"
 )

-func NewHTTPHeaders(headers map[string]string) (http.Header, E.NestedError) {
+func ValidateHTTPHeaders(headers map[string]string) (http.Header, E.NestedError) {
 	h := make(http.Header)
 	for k, v := range headers {
 		vSplit := strings.Split(v, ",")
@@ -15,5 +15,5 @@ func NewHTTPHeaders(headers map[string]string) (http.Header, E.NestedError) {
 			h.Add(k, strings.TrimSpace(header))
 		}
 	}
-	return h, E.Nil()
+	return h, nil
 }
--- a/src/proxy/fields/host.go
+++ b/src/proxy/fields/host.go
@@ -7,6 +7,6 @@ import (
 type Host string
 type Subdomain = Alias

-func NewHost(s string) (Host, E.NestedError) {
-	return Host(s), E.Nil()
+func ValidateHost(s string) (Host, E.NestedError) {
+	return Host(s), nil
 }
--- a/src/proxy/fields/path_mode.go
+++ b/src/proxy/fields/path_mode.go
@@ -9,7 +9,7 @@ type PathMode string
 func NewPathMode(pm string) (PathMode, E.NestedError) {
 	switch pm {
 	case "", "forward":
-		return PathMode(pm), E.Nil()
+		return PathMode(pm), nil
 	default:
 		return "", E.Invalid("path mode", pm)
 	}
--- a/src/proxy/fields/path_pattern.go
+++ b/src/proxy/fields/path_pattern.go
@@ -16,22 +16,22 @@ func NewPathPattern(s string) (PathPattern, E.NestedError) {
 	if !pathPattern.MatchString(string(s)) {
 		return "", E.Invalid("path pattern", s)
 	}
-	return PathPattern(s), E.Nil()
+	return PathPattern(s), nil
 }

-func NewPathPatterns(s []string) (PathPatterns, E.NestedError) {
+func ValidatePathPatterns(s []string) (PathPatterns, E.NestedError) {
 	if len(s) == 0 {
-		return []PathPattern{"/"}, E.Nil()
+		return []PathPattern{"/"}, nil
 	}
 	pp := make(PathPatterns, len(s))
 	for i, v := range s {
-		if pattern, err := NewPathPattern(v); err.IsNotNil() {
+		if pattern, err := NewPathPattern(v); err.HasError() {
 			return nil, err
 		} else {
 			pp[i] = pattern
 		}
 	}
-	return pp, E.Nil()
+	return pp, nil
 }

 var pathPattern = regexp.MustCompile("^((GET|POST|DELETE|PUT|PATCH|HEAD|OPTIONS|CONNECT)\\s)?(/\\w*)+/?$")
--- a/src/proxy/fields/port.go
+++ b/src/proxy/fields/port.go
@@ -8,7 +8,7 @@ import (

 type Port int

-func NewPort(v string) (Port, E.NestedError) {
+func ValidatePort(v string) (Port, E.NestedError) {
 	p, err := strconv.Atoi(v)
 	if err != nil {
 		return ErrPort, E.Invalid("port number", v).With(err)
@@ -18,17 +18,17 @@ func NewPort(v string) (Port, E.NestedError) {

 func NewPortInt[Int int | uint16](v Int) (Port, E.NestedError) {
 	pp := Port(v)
-	if err := pp.boundCheck(); err.IsNotNil() {
+	if err := pp.boundCheck(); err.HasError() {
 		return ErrPort, err
 	}
-	return pp, E.Nil()
+	return pp, nil
 }

 func (p Port) boundCheck() E.NestedError {
 	if p < MinPort || p > MaxPort {
 		return E.Invalid("port", p)
 	}
-	return E.Nil()
+	return nil
 }

 const (
--- a/src/proxy/fields/scheme.go
+++ b/src/proxy/fields/scheme.go
@@ -1,8 +1,6 @@
 package fields

 import (
-	"strings"
-
 	E "github.com/yusing/go-proxy/error"
 )

@@ -11,24 +9,11 @@ type Scheme string
 func NewScheme(s string) (Scheme, E.NestedError) {
 	switch s {
 	case "http", "https", "tcp", "udp":
-		return Scheme(s), E.Nil()
+		return Scheme(s), nil
 	}
 	return "", E.Invalid("scheme", s)
 }

-func NewSchemeFromPort(p string) (Scheme, E.NestedError) {
-	var s string
-	switch {
-	case strings.ContainsRune(p, ':'):
-		s = "tcp"
-	case strings.HasSuffix(p, "443"):
-		s = "https"
-	default:
-		s = "http"
-	}
-	return Scheme(s), E.Nil()
-}
-
 func (s Scheme) IsHTTP() bool   { return s == "http" }
 func (s Scheme) IsHTTPS() bool  { return s == "https" }
 func (s Scheme) IsTCP() bool    { return s == "tcp" }
--- a/src/proxy/fields/signal.go
+++ b/src/proxy/fields/signal.go
@@ -0,0 +1,17 @@
+package fields
+
+import (
+	E "github.com/yusing/go-proxy/error"
+)
+
+type Signal string
+
+func ValidateSignal(s string) (Signal, E.NestedError) {
+	switch s {
+	case "", "SIGINT", "SIGTERM", "SIGHUP", "SIGQUIT",
+		"INT", "TERM", "HUP", "QUIT":
+		return Signal(s), nil
+	}
+
+	return "", E.Invalid("signal", s)
+}
--- a/src/proxy/fields/stop_method.go
+++ b/src/proxy/fields/stop_method.go
@@ -0,0 +1,23 @@
+package fields
+
+import (
+	E "github.com/yusing/go-proxy/error"
+)
+
+type StopMethod string
+
+const (
+	StopMethodPause StopMethod = "pause"
+	StopMethodStop  StopMethod = "stop"
+	StopMethodKill  StopMethod = "kill"
+)
+
+func ValidateStopMethod(s string) (StopMethod, E.NestedError) {
+	sm := StopMethod(s)
+	switch sm {
+	case StopMethodPause, StopMethodStop, StopMethodKill:
+		return sm, nil
+	default:
+		return "", E.Invalid("stop_method", sm)
+	}
+}
--- a/src/proxy/fields/stream_port.go
+++ b/src/proxy/fields/stream_port.go
@@ -1,6 +1,7 @@
 package fields

 import (
+	"fmt"
 	"strings"

 	"github.com/yusing/go-proxy/common"
@@ -12,38 +13,38 @@ type StreamPort struct {
 	ProxyPort     Port `json:"proxy"`
 }

-func NewStreamPort(p string) (StreamPort, E.NestedError) {
+func ValidateStreamPort(p string) (StreamPort, E.NestedError) {
 	split := strings.Split(p, ":")
 	if len(split) != 2 {
-		return StreamPort{}, E.Invalid("stream port", p).With("should be in 'x:y' format")
+		return StreamPort{}, E.Invalid("stream port", fmt.Sprintf("%q", p)).With("should be in 'x:y' format")
 	}

-	listeningPort, err := NewPort(split[0])
-	if err.IsNotNil() {
+	listeningPort, err := ValidatePort(split[0])
+	if err.HasError() {
 		return StreamPort{}, err
 	}
-	if err = listeningPort.boundCheck(); err.IsNotNil() {
+	if err = listeningPort.boundCheck(); err.HasError() {
 		return StreamPort{}, err
 	}

-	proxyPort, err := NewPort(split[1])
-	if err.IsNotNil() {
+	proxyPort, err := ValidatePort(split[1])
+	if err.HasError() {
 		proxyPort, err = parseNameToPort(split[1])
-		if err.IsNotNil() {
+		if err.HasError() {
 			return StreamPort{}, err
 		}
 	}
-	if err = proxyPort.boundCheck(); err.IsNotNil() {
+	if err = proxyPort.boundCheck(); err.HasError() {
 		return StreamPort{}, err
 	}

-	return StreamPort{ListeningPort: listeningPort, ProxyPort: proxyPort}, E.Nil()
+	return StreamPort{ListeningPort: listeningPort, ProxyPort: proxyPort}, nil
 }

 func parseNameToPort(name string) (Port, E.NestedError) {
-	port, ok := common.NamePortMapTCP[name]
+	port, ok := common.ServiceNamePortMapTCP[name]
 	if !ok {
 		return -1, E.Unsupported("service", name)
 	}
-	return Port(port), E.Nil()
+	return Port(port), nil
 }
--- a/src/proxy/fields/stream_scheme.go
+++ b/src/proxy/fields/stream_scheme.go
@@ -12,7 +12,7 @@ type StreamScheme struct {
 	ProxyScheme     Scheme `json:"proxy"`
 }

-func NewStreamScheme(s string) (ss *StreamScheme, err E.NestedError) {
+func ValidateStreamScheme(s string) (ss *StreamScheme, err E.NestedError) {
 	ss = &StreamScheme{}
 	parts := strings.Split(s, ":")
 	if len(parts) == 1 {
@@ -21,14 +21,14 @@ func NewStreamScheme(s string) (ss *StreamScheme, err E.NestedError) {
 		return nil, E.Invalid("stream scheme", s)
 	}
 	ss.ListeningScheme, err = NewScheme(parts[0])
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
 	ss.ProxyScheme, err = NewScheme(parts[1])
-	if err.IsNotNil() {
+	if err.HasError() {
 		return nil, err
 	}
-	return ss, E.Nil()
+	return ss, nil
 }

 func (s StreamScheme) String() string {
--- a/src/proxy/fields/timeout.go
+++ b/src/proxy/fields/timeout.go
@@ -0,0 +1,18 @@
+package fields
+
+import (
+	"time"
+
+	E "github.com/yusing/go-proxy/error"
+)
+
+func ValidateDurationPostitive(value string) (time.Duration, E.NestedError) {
+	d, err := time.ParseDuration(value)
+	if err != nil {
+		return 0, E.Invalid("duration", value)
+	}
+	if d < 0 {
+		return 0, E.Invalid("duration", "negative value")
+	}
+	return d, nil
+}
--- a/src/proxy/provider/constants.go
+++ b/src/proxy/provider/constants.go
@@ -1,3 +0,0 @@
-package provider
-
-const wildcardAlias = "*"
--- a/src/proxy/provider/docker_provider.go
+++ b/src/proxy/provider/docker_provider.go
@@ -1,159 +1,205 @@
 package provider

 import (
-	"fmt"
+	"regexp"
+	"strconv"
 	"strings"

-	"github.com/docker/docker/api/types"
-	"github.com/sirupsen/logrus"
 	D "github.com/yusing/go-proxy/docker"
 	E "github.com/yusing/go-proxy/error"
 	M "github.com/yusing/go-proxy/models"
-	PT "github.com/yusing/go-proxy/proxy/fields"
+	R "github.com/yusing/go-proxy/route"
 	W "github.com/yusing/go-proxy/watcher"
 )

 type DockerProvider struct {
-	dockerHost string
+	dockerHost, hostname string
 }

-func DockerProviderImpl(dockerHost string) ProviderImpl {
-	return &DockerProvider{dockerHost: dockerHost}
-}
+var AliasRefRegex = regexp.MustCompile(`\$\d+`)

-// GetProxyEntries returns proxy entries from a docker client.
-//
-// It retrieves the docker client information using the dockerhelper.GetClientInfo method.
-// Then, it iterates over the containers in the docker client information and calls
-// the getEntriesFromLabels method to get the proxy entries for each container.
-// Any errors encountered during the process are added to the ne error object.
-// Finally, it returns the collected proxy entries and the ne error object.
-//
-// Parameters:
-//   - p: A pointer to the DockerProvider struct.
-//
-// Returns:
-//   - P.EntryModelSlice: (non-nil) A slice of EntryModel structs representing the proxy entries.
-//   - error: An error object if there was an error retrieving the docker client information or parsing the labels.
-func (p DockerProvider) GetProxyEntries() (M.ProxyEntries, E.NestedError) {
-	entries := M.NewProxyEntries()
-
-	info, err := D.GetClientInfo(p.dockerHost)
-	if err.IsNotNil() {
-		return entries, err
+func DockerProviderImpl(dockerHost string) (ProviderImpl, E.NestedError) {
+	hostname, err := D.ParseDockerHostname(dockerHost)
+	if err.HasError() {
+		return nil, err
 	}
-
-	errors := E.NewBuilder("errors when parse docker labels")
-
-	for _, container := range info.Containers {
-		en, err := p.getEntriesFromLabels(&container, info.Host)
-		if err.IsNotNil() {
-			errors.Add(err)
-		}
-		// although err is not nil
-		// there may be some valid entries in `en`
-		dups := entries.MergeWith(en)
-		// add the duplicate proxy entries to the error
-		dups.EachKV(func(k string, v *M.ProxyEntry) {
-			errors.Addf("duplicate alias %s", k)
-		})
-	}
-
-	return entries, errors.Build()
+	return &DockerProvider{dockerHost: dockerHost, hostname: hostname}, nil
 }

 func (p *DockerProvider) NewWatcher() W.Watcher {
 	return W.NewDockerWatcher(p.dockerHost)
 }

-// Returns a list of proxy entries for a container.
-// Always non-nil
-func (p *DockerProvider) getEntriesFromLabels(container *types.Container, clientHost string) (M.ProxyEntries, E.NestedError) {
-	var mainAlias string
-	var aliases PT.Aliases
-
-	// set mainAlias to docker compose service name if available
-	if serviceName, ok := container.Labels["com.docker.compose.service"]; ok {
-		mainAlias = serviceName
-	}
-
-	// if mainAlias is not set,
-	// or container name is different from service name
-	// use container name
-	if containerName := strings.TrimPrefix(container.Names[0], "/"); containerName != mainAlias {
-		mainAlias = containerName
-	}
-
-	if l, ok := container.Labels["proxy.aliases"]; ok {
-		aliases = PT.NewAliases(l)
-		delete(container.Labels, "proxy.aliases")
-	} else {
-		aliases = PT.NewAliases(mainAlias)
-	}
-
+func (p *DockerProvider) LoadRoutesImpl() (routes R.Routes, err E.NestedError) {
+	routes = R.NewRoutes()
 	entries := M.NewProxyEntries()

-	// find first port, return if no port exposed
-	defaultPort, err := findFirstPort(container)
-	if err.IsNotNil() {
-		logrus.Debug(mainAlias, " ", err.Error())
+	info, err := D.GetClientInfo(p.dockerHost, true)
+	if err.HasError() {
+		return routes, E.FailWith("connect to docker", err)
 	}

+	errors := E.NewBuilder("errors when parse docker labels")
+
+	for _, c := range info.Containers {
+		container := D.FromDocker(&c, p.dockerHost)
+		if container.IsExcluded {
+			continue
+		}
+
+		newEntries, err := p.entriesFromContainerLabels(container)
+		if err.HasError() {
+			errors.Add(err)
+		}
+		// although err is not nil
+		// there may be some valid entries in `en`
+		dups := entries.MergeFrom(newEntries)
+		// add the duplicate proxy entries to the error
+		dups.RangeAll(func(k string, v *M.RawEntry) {
+			errors.Addf("duplicate alias %s", k)
+		})
+	}
+
+	entries.RangeAll(func(_ string, e *M.RawEntry) {
+		e.DockerHost = p.dockerHost
+	})
+
+	routes, err = R.FromEntries(entries)
+	errors.Add(err)
+
+	return routes, errors.Build()
+}
+
+func (p *DockerProvider) OnEvent(event W.Event, routes R.Routes) (res EventResult) {
+	b := E.NewBuilder("event %s error", event)
+	defer b.To(&res.err)
+
+	routes.RangeAll(func(k string, v R.Route) {
+		if v.Entry().ContainerName == event.ActorName {
+			b.Add(v.Stop())
+			routes.Delete(k)
+			res.nRemoved++
+		}
+	})
+
+	client, err := D.ConnectClient(p.dockerHost)
+	if err.HasError() {
+		b.Add(E.FailWith("connect to docker", err))
+		return
+	}
+	defer client.Close()
+	cont, err := client.Inspect(event.ActorID)
+	if err.HasError() {
+		b.Add(E.FailWith("inspect container", err))
+		return
+	}
+	entries, err := p.entriesFromContainerLabels(cont)
+	b.Add(err)
+
+	entries.RangeAll(func(alias string, entry *M.RawEntry) {
+		if routes.Has(alias) {
+			b.Add(E.AlreadyExist("alias", alias))
+		} else {
+			if route, err := R.NewRoute(entry); err.HasError() {
+				b.Add(err)
+			} else {
+				routes.Store(alias, route)
+				b.Add(route.Start())
+				res.nAdded++
+			}
+		}
+	})
+
+	return
+}
+
+// Returns a list of proxy entries for a container.
+// Always non-nil
+func (p *DockerProvider) entriesFromContainerLabels(container D.Container) (M.RawEntries, E.NestedError) {
+	entries := M.NewProxyEntries()
+
 	// init entries map for all aliases
-	aliases.ForEach(func(a PT.Alias) {
-		entries.Set(string(a), &M.ProxyEntry{
-			Alias: string(a),
-			Host:  clientHost,
-			Port:  defaultPort,
+	for _, a := range container.Aliases {
+		entries.Store(a, &M.RawEntry{
+			Alias:           a,
+			Host:            p.hostname,
+			ProxyProperties: container.ProxyProperties,
 		})
-	})
+	}

-	errors := E.NewBuilder("failed to apply label for %q", mainAlias)
+	errors := E.NewBuilder("failed to apply label")
 	for key, val := range container.Labels {
-		lbl, err := D.ParseLabel(key, val)
-		if err.IsNotNil() {
-			errors.Add(E.From(err).Subject(key))
-			continue
-		}
-		if lbl.Namespace != D.NSProxy {
-			continue
-		}
-		if lbl.Target == wildcardAlias {
-			// apply label for all aliases
-			entries.EachKV(func(a string, e *M.ProxyEntry) {
-				if err = D.ApplyLabel(e, lbl); err.IsNotNil() {
-					errors.Add(E.From(err).Subject(lbl.Target))
-				}
-			})
-		} else {
-			config, ok := entries.UnsafeGet(lbl.Target)
+		errors.Add(p.applyLabel(container, entries, key, val))
+	}
+
+	// selecting correct host port
+	if container.HostConfig.NetworkMode != "host" {
+		for _, a := range container.Aliases {
+			entry, ok := entries.Load(a)
 			if !ok {
-				errors.Add(E.NotExists("alias", lbl.Target))
 				continue
 			}
-			if err = D.ApplyLabel(config, lbl); err.IsNotNil() {
-				errors.Add(err.Subject(lbl.Target))
+			for _, p := range container.Ports {
+				containerPort := strconv.Itoa(int(p.PrivatePort))
+				publicPort := strconv.Itoa(int(p.PublicPort))
+				entryPortSplit := strings.Split(entry.Port, ":")
+				if len(entryPortSplit) == 2 && entryPortSplit[1] == containerPort {
+					entryPortSplit[1] = publicPort
+				} else if entryPortSplit[0] == containerPort {
+					entryPortSplit[0] = publicPort
+				}
+				entry.Port = strings.Join(entryPortSplit, ":")
 			}
 		}
 	}

-	entries.EachKV(func(a string, e *M.ProxyEntry) {
-		if e.Port == "" {
-			entries.UnsafeDelete(a)
-		}
-	})
-
-	return entries, errors.Build()
+	return entries, errors.Build().Subject(container.ContainerName)
 }

-func findFirstPort(c *types.Container) (string, E.NestedError) {
-	if len(c.Ports) == 0 {
-		return "", E.FailureWhy("findFirstPort", "no port exposed")
+func (p *DockerProvider) applyLabel(container D.Container, entries M.RawEntries, key, val string) (res E.NestedError) {
+	b := E.NewBuilder("errors in label %s", key)
+	defer b.To(&res)
+
+	lbl, err := D.ParseLabel(key, val)
+	if err.HasError() {
+		b.Add(err.Subject(key))
 	}
-	for _, p := range c.Ports {
-		if p.PublicPort != 0 {
-			return fmt.Sprint(p.PublicPort), E.Nil()
+	if lbl.Namespace != D.NSProxy {
+		return
+	}
+	if lbl.Target == D.WildcardAlias {
+		// apply label for all aliases
+		entries.RangeAll(func(a string, e *M.RawEntry) {
+			if err = D.ApplyLabel(e, lbl); err.HasError() {
+				b.Add(err.Subject(lbl.Target))
+			}
+		})
+	} else {
+		refErr := E.NewBuilder("errors parsing alias references")
+		lbl.Target = AliasRefRegex.ReplaceAllStringFunc(lbl.Target, func(ref string) string {
+			index, err := strconv.Atoi(ref[1:])
+			if err != nil {
+				refErr.Add(E.Invalid("integer", ref))
+				return ref
+			}
+			if index < 1 || index > len(container.Aliases) {
+				refErr.Add(E.Invalid("index", ref).Extraf("index out of range"))
+				return ref
+			}
+			return container.Aliases[index-1]
+		})
+		if refErr.HasError() {
+			b.Add(refErr.Build())
+			return
+		}
+		config, ok := entries.Load(lbl.Target)
+		if !ok {
+			b.Add(E.NotExist("alias", lbl.Target))
+			return
+		}
+		if err = D.ApplyLabel(config, lbl); err.HasError() {
+			b.Add(err.Subject(lbl.Target))
 		}
 	}
-	return "", E.Failure("findFirstPort")
+	return
 }
--- a/src/proxy/provider/docker_provider_test.go
+++ b/src/proxy/provider/docker_provider_test.go
@@ -0,0 +1,167 @@
+package provider
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/docker/docker/api/types"
+	"github.com/yusing/go-proxy/common"
+	D "github.com/yusing/go-proxy/docker"
+	E "github.com/yusing/go-proxy/error"
+	F "github.com/yusing/go-proxy/utils/functional"
+	. "github.com/yusing/go-proxy/utils/testing"
+)
+
+func get[KT comparable, VT any](m F.Map[KT, VT], key KT) VT {
+	v, _ := m.Load(key)
+	return v
+}
+
+var dummyNames = []string{"/a"}
+
+func TestApplyLabelFieldValidity(t *testing.T) {
+	pathPatterns := `
+- /
+- POST /upload/{$}
+- GET /static
+`[1:]
+	pathPatternsExpect := []string{
+		"/",
+		"POST /upload/{$}",
+		"GET /static",
+	}
+	setHeaders := `
+X_Custom_Header1: value1
+X_Custom_Header1: value2
+X_Custom_Header2: value3
+`[1:]
+	setHeadersExpect := map[string]string{
+		"X_Custom_Header1": "value1, value2",
+		"X_Custom_Header2": "value3",
+	}
+	hideHeaders := `
+- X-Custom-Header1
+- X-Custom-Header2
+`[1:]
+	hideHeadersExpect := []string{
+		"X-Custom-Header1",
+		"X-Custom-Header2",
+	}
+	var p DockerProvider
+	var c = D.FromDocker(&types.Container{
+		Names: dummyNames,
+		Labels: map[string]string{
+			D.LableAliases:          "a,b",
+			D.LabelIdleTimeout:      common.IdleTimeoutDefault,
+			D.LabelStopMethod:       common.StopMethodDefault,
+			D.LabelStopSignal:       "SIGTERM",
+			D.LabelStopTimeout:      common.StopTimeoutDefault,
+			D.LabelWakeTimeout:      common.WakeTimeoutDefault,
+			"proxy.*.no_tls_verify": "true",
+			"proxy.*.scheme":        "https",
+			"proxy.*.host":          "app",
+			"proxy.*.port":          "4567",
+			"proxy.a.no_tls_verify": "true",
+			"proxy.a.path_patterns": pathPatterns,
+			"proxy.a.set_headers":   setHeaders,
+			"proxy.a.hide_headers":  hideHeaders,
+		}}, "")
+	entries, err := p.entriesFromContainerLabels(c)
+	ExpectNoError(t, err.Error())
+	a := get(entries, "a")
+	b := get(entries, "b")
+
+	ExpectEqual(t, a.Scheme, "https")
+	ExpectEqual(t, b.Scheme, "https")
+
+	ExpectEqual(t, a.Host, "app")
+	ExpectEqual(t, b.Host, "app")
+
+	ExpectEqual(t, a.Port, "4567")
+	ExpectEqual(t, b.Port, "4567")
+
+	ExpectTrue(t, a.NoTLSVerify)
+	ExpectTrue(t, b.NoTLSVerify)
+
+	ExpectDeepEqual(t, a.PathPatterns, pathPatternsExpect)
+	ExpectEqual(t, len(b.PathPatterns), 0)
+
+	ExpectDeepEqual(t, a.SetHeaders, setHeadersExpect)
+	ExpectEqual(t, len(b.SetHeaders), 0)
+
+	ExpectDeepEqual(t, a.HideHeaders, hideHeadersExpect)
+	ExpectEqual(t, len(b.HideHeaders), 0)
+
+	ExpectEqual(t, a.IdleTimeout, common.IdleTimeoutDefault)
+	ExpectEqual(t, b.IdleTimeout, common.IdleTimeoutDefault)
+
+	ExpectEqual(t, a.StopTimeout, common.StopTimeoutDefault)
+	ExpectEqual(t, b.StopTimeout, common.StopTimeoutDefault)
+
+	ExpectEqual(t, a.StopMethod, common.StopMethodDefault)
+	ExpectEqual(t, b.StopMethod, common.StopMethodDefault)
+
+	ExpectEqual(t, a.WakeTimeout, common.WakeTimeoutDefault)
+	ExpectEqual(t, b.WakeTimeout, common.WakeTimeoutDefault)
+
+	ExpectEqual(t, a.StopSignal, "SIGTERM")
+	ExpectEqual(t, b.StopSignal, "SIGTERM")
+}
+
+func TestApplyLabel(t *testing.T) {
+	var p DockerProvider
+	var c = D.FromDocker(&types.Container{
+		Names: dummyNames,
+		Labels: map[string]string{
+			D.LableAliases:          "a,b,c",
+			"proxy.a.no_tls_verify": "true",
+			"proxy.b.port":          "1234",
+			"proxy.c.scheme":        "https",
+		}}, "")
+	entries, err := p.entriesFromContainerLabels(c)
+	ExpectNoError(t, err.Error())
+	ExpectEqual(t, get(entries, "a").NoTLSVerify, true)
+	ExpectEqual(t, get(entries, "b").Port, "1234")
+	ExpectEqual(t, get(entries, "c").Scheme, "https")
+}
+
+func TestApplyLabelWithRef(t *testing.T) {
+	var p DockerProvider
+	var c = D.FromDocker(&types.Container{
+		Names: dummyNames,
+		Labels: map[string]string{
+			D.LableAliases:    "a,b,c",
+			"proxy.$1.host":   "localhost",
+			"proxy.$2.port":   "1234",
+			"proxy.$3.scheme": "https",
+		}}, "")
+	entries, err := p.entriesFromContainerLabels(c)
+	ExpectNoError(t, err.Error())
+	ExpectEqual(t, get(entries, "a").Host, "localhost")
+	ExpectEqual(t, get(entries, "b").Port, "1234")
+	ExpectEqual(t, get(entries, "c").Scheme, "https")
+}
+
+func TestApplyLabelWithRefIndexError(t *testing.T) {
+	var p DockerProvider
+	var c = D.FromDocker(&types.Container{
+		Names: dummyNames,
+		Labels: map[string]string{
+			D.LableAliases:    "a,b",
+			"proxy.$1.host":   "localhost",
+			"proxy.$4.scheme": "https",
+		}}, "")
+	_, err := p.entriesFromContainerLabels(c)
+	ExpectError(t, E.ErrInvalid, err.Error())
+	ExpectTrue(t, strings.Contains(err.String(), "index out of range"))
+
+	c = D.FromDocker(&types.Container{
+		Names: dummyNames,
+		Labels: map[string]string{
+			D.LableAliases:  "a,b",
+			"proxy.$0.host": "localhost",
+		}}, "")
+	_, err = p.entriesFromContainerLabels(c)
+	ExpectError(t, E.ErrInvalid, err.Error())
+	ExpectTrue(t, strings.Contains(err.String(), "index out of range"))
+}
--- a/src/proxy/provider/file_provider.go
+++ b/src/proxy/provider/file_provider.go
@@ -1,12 +1,14 @@
 package provider

 import (
+	"errors"
 	"os"
 	"path"

 	"github.com/yusing/go-proxy/common"
 	E "github.com/yusing/go-proxy/error"
 	M "github.com/yusing/go-proxy/models"
+	R "github.com/yusing/go-proxy/route"
 	U "github.com/yusing/go-proxy/utils"
 	W "github.com/yusing/go-proxy/watcher"
 )
@@ -16,37 +18,75 @@ type FileProvider struct {
 	path     string
 }

-func FileProviderImpl(filename string) ProviderImpl {
-	return &FileProvider{
+func FileProviderImpl(filename string) (ProviderImpl, E.NestedError) {
+	impl := &FileProvider{
 		fileName: filename,
 		path:     path.Join(common.ConfigBasePath, filename),
 	}
+	_, err := os.Stat(impl.path)
+	switch {
+	case err == nil:
+		return impl, nil
+	case errors.Is(err, os.ErrNotExist):
+		return nil, E.NotExist("file", impl.path)
+	default:
+		return nil, E.UnexpectedError(err)
+	}
 }

 func Validate(data []byte) E.NestedError {
 	return U.ValidateYaml(U.GetSchema(common.ProvidersSchemaPath), data)
 }

-func (p *FileProvider) String() string {
-	return p.fileName
+func (p FileProvider) OnEvent(event W.Event, routes R.Routes) (res EventResult) {
+	b := E.NewBuilder("event %s error", event)
+	defer b.To(&res.err)
+
+	newRoutes, err := p.LoadRoutesImpl()
+	if err.HasError() {
+		b.Add(err)
+		return
+	}
+
+	routes.RangeAll(func(_ string, v R.Route) {
+		b.Add(v.Stop())
+	})
+	routes.Clear()
+
+	newRoutes.RangeAll(func(_ string, v R.Route) {
+		b.Add(v.Start())
+	})
+
+	routes.MergeFrom(newRoutes)
+	return
 }

-func (p *FileProvider) GetProxyEntries() (M.ProxyEntries, E.NestedError) {
+func (p *FileProvider) LoadRoutesImpl() (routes R.Routes, res E.NestedError) {
+	routes = R.NewRoutes()
+
+	b := E.NewBuilder("file %q validation failure", p.fileName)
+	defer b.To(&res)
+
 	entries := M.NewProxyEntries()
+
 	data, err := E.Check(os.ReadFile(p.path))
-	if err.IsNotNil() {
-		return entries, E.Failure("read file").Subject(p).With(err)
+	if err.HasError() {
+		b.Add(E.FailWith("read file", err))
+		return
 	}
-	ne := E.Failure("validation").Subject(p)
+
 	if !common.NoSchemaValidation {
-		if err = Validate(data); err.IsNotNil() {
-			return entries, ne.With(err)
+		if err = Validate(data); err.HasError() {
+			b.Add(err)
+			return
 		}
 	}
-	if err = entries.UnmarshalFromYAML(data); err.IsNotNil() {
-		return entries, ne.With(err)
+	if err = entries.UnmarshalFromYAML(data); err.HasError() {
+		b.Add(err)
+		return
 	}
-	return entries, E.Nil()
+
+	return R.FromEntries(entries)
 }

 func (p *FileProvider) NewWatcher() W.Watcher {
--- a/src/proxy/provider/provider.go
+++ b/src/proxy/provider/provider.go
@@ -4,38 +4,40 @@ import (
 	"context"
 	"fmt"
 	"path"
-	"time"

 	"github.com/sirupsen/logrus"
 	E "github.com/yusing/go-proxy/error"
-	M "github.com/yusing/go-proxy/models"
 	R "github.com/yusing/go-proxy/route"
 	W "github.com/yusing/go-proxy/watcher"
 )

-type ProviderImpl interface {
-	GetProxyEntries() (M.ProxyEntries, E.NestedError)
-	NewWatcher() W.Watcher
-}
+type (
+	Provider struct {
+		ProviderImpl

-type Provider struct {
-	ProviderImpl
+		name   string
+		t      ProviderType
+		routes R.Routes

-	name        string
-	t           ProviderType
-	routes      *R.Routes
-	reloadReqCh chan struct{}
+		watcher       W.Watcher
+		watcherCtx    context.Context
+		watcherCancel context.CancelFunc

-	watcher       W.Watcher
-	watcherCtx    context.Context
-	watcherCancel context.CancelFunc
-
-	l *logrus.Entry
-
-	cooldownCh chan struct{}
-}
-
-type ProviderType string
+		l *logrus.Entry
+	}
+	ProviderImpl interface {
+		NewWatcher() W.Watcher
+		// even returns error, routes must be non-nil
+		LoadRoutesImpl() (R.Routes, E.NestedError)
+		OnEvent(event W.Event, routes R.Routes) EventResult
+	}
+	ProviderType string
+	EventResult  struct {
+		nRemoved int
+		nAdded   int
+		err      E.NestedError
+	}
+)

 const (
 	ProviderTypeDocker ProviderType = "docker"
@@ -44,29 +46,33 @@ const (

 func newProvider(name string, t ProviderType) *Provider {
 	p := &Provider{
-		name:        name,
-		t:           t,
-		routes:      R.NewRoutes(),
-		reloadReqCh: make(chan struct{}, 1),
-		cooldownCh:  make(chan struct{}, 1),
+		name:   name,
+		t:      t,
+		routes: R.NewRoutes(),
 	}
 	p.l = logrus.WithField("provider", p)
-	go p.processReloadRequests()
-	return p
-}
-func NewFileProvider(filename string) *Provider {
-	name := path.Base(filename)
-	p := newProvider(name, ProviderTypeFile)
-	p.ProviderImpl = FileProviderImpl(filename)
-	p.watcher = p.NewWatcher()
 	return p
 }

-func NewDockerProvider(name string, dockerHost string) *Provider {
-	p := newProvider(name, ProviderTypeDocker)
-	p.ProviderImpl = DockerProviderImpl(dockerHost)
+func NewFileProvider(filename string) (p *Provider, err E.NestedError) {
+	name := path.Base(filename)
+	p = newProvider(name, ProviderTypeFile)
+	p.ProviderImpl, err = FileProviderImpl(filename)
+	if err != nil {
+		return nil, err
+	}
 	p.watcher = p.NewWatcher()
-	return p
+	return
+}
+
+func NewDockerProvider(name string, dockerHost string) (p *Provider, err E.NestedError) {
+	p = newProvider(name, ProviderTypeDocker)
+	p.ProviderImpl, err = DockerProviderImpl(dockerHost)
+	if err != nil {
+		return nil, err
+	}
+	p.watcher = p.NewWatcher()
+	return
 }

 func (p *Provider) GetName() string {
@@ -78,26 +84,22 @@ func (p *Provider) GetType() ProviderType {
 }

 func (p *Provider) String() string {
-	return fmt.Sprintf("%s: %s", p.t, p.name)
+	return fmt.Sprintf("%s-%s", p.t, p.name)
 }

-func (p *Provider) StartAllRoutes() E.NestedError {
-	err := p.loadRoutes()
+func (p *Provider) StartAllRoutes() (res E.NestedError) {
+	errors := E.NewBuilder("errors in routes")
+	defer errors.To(&res)

 	// start watcher no matter load success or not
 	p.watcherCtx, p.watcherCancel = context.WithCancel(context.Background())
 	go p.watchEvents()

-	errors := E.NewBuilder("errors in routes")
 	nStarted := 0
 	nFailed := 0

-	if err.IsNotNil() {
-		errors.Add(err)
-	}
-
-	p.routes.EachKVParallel(func(alias string, r R.Route) {
-		if err := r.Start(); err.IsNotNil() {
+	p.routes.RangeAll(func(alias string, r R.Route) {
+		if err := r.Start(); err.HasError() {
 			errors.Add(err.Subject(r))
 			nFailed++
 		} else {
@@ -106,19 +108,22 @@ func (p *Provider) StartAllRoutes() E.NestedError {
 	})

 	p.l.Debugf("%d routes started, %d failed", nStarted, nFailed)
-	return errors.Build()
+	return
 }

-func (p *Provider) StopAllRoutes() E.NestedError {
+func (p *Provider) StopAllRoutes() (res E.NestedError) {
 	if p.watcherCancel != nil {
 		p.watcherCancel()
 		p.watcherCancel = nil
 	}
+
 	errors := E.NewBuilder("errors stopping routes for provider %q", p.name)
+	defer errors.To(&res)
+
 	nStopped := 0
 	nFailed := 0
-	p.routes.EachKVParallel(func(alias string, r R.Route) {
-		if err := r.Stop(); err.IsNotNil() {
+	p.routes.RangeAll(func(alias string, r R.Route) {
+		if err := r.Stop(); err.HasError() {
 			errors.Add(err.Subject(r))
 			nFailed++
 		} else {
@@ -126,20 +131,25 @@ func (p *Provider) StopAllRoutes() E.NestedError {
 		}
 	})
 	p.l.Debugf("%d routes stopped, %d failed", nStopped, nFailed)
-	return errors.Build()
+	return
 }

-func (p *Provider) ReloadRoutes() {
-	select {
-	case p.reloadReqCh <- struct{}{}:
-		// Successfully sent reload request
-	default:
-		// Reload request already in progress, ignore this request
+func (p *Provider) RangeRoutes(do func(string, R.Route)) {
+	p.routes.RangeAll(do)
+}
+
+func (p *Provider) GetRoute(alias string) (R.Route, bool) {
+	return p.routes.Load(alias)
+}
+
+func (p *Provider) LoadRoutes() E.NestedError {
+	var err E.NestedError
+	p.routes, err = p.LoadRoutesImpl()
+	if p.routes.Size() > 0 {
+		p.l.Infof("loaded %d routes", p.routes.Size())
+		return err
 	}
-}
-
-func (p *Provider) GetCurrentRoutes() *R.Routes {
-	return p.routes
+	return E.FailWith("loading routes", err)
 }

 func (p *Provider) watchEvents() {
@@ -151,11 +161,15 @@ func (p *Provider) watchEvents() {
 		case <-p.watcherCtx.Done():
 			return
 		case event, ok := <-events:
-			if !ok {
+			if !ok { // channel closed
 				return
 			}
-			l.Info(event)
-			p.ReloadRoutes()
+			res := p.OnEvent(event, p.routes)
+			l.Infof("%s event %q", event.Type, event)
+			l.Infof("%d route added, %d routes removed", res.nAdded, res.nRemoved)
+			if res.err.HasError() {
+				l.Error(res.err)
+			}
 		case err, ok := <-errs:
 			if !ok {
 				return
@@ -167,50 +181,3 @@ func (p *Provider) watchEvents() {
 		}
 	}
 }
-
-func (p *Provider) processReloadRequests() {
-	for range p.reloadReqCh {
-		// prevent busy loop caused by a container
-		// repeating crashing and restarting
-		select {
-		case p.cooldownCh <- struct{}{}:
-			p.l.Info("Starting to reload routes")
-			nRoutes := p.routes.Size()
-
-			p.StopAllRoutes()
-			p.loadRoutes()
-			p.StartAllRoutes()
-
-			p.l.Infof("Routes reloaded (%d -> %d)", nRoutes, p.routes.Size())
-
-			go func() {
-				time.Sleep(reloadCooldown)
-				<-p.cooldownCh
-			}()
-		default:
-		}
-	}
-}
-
-func (p *Provider) loadRoutes() E.NestedError {
-	entries, err := p.GetProxyEntries()
-
-	if err.IsNotNil() {
-		p.l.Warn(err.Subject(p))
-	}
-	p.routes = R.NewRoutes()
-
-	errors := E.NewBuilder("errors loading routes from %s", p)
-	entries.EachKV(func(a string, e *M.ProxyEntry) {
-		e.Alias = a
-		r, err := R.NewRoute(e)
-		if err.IsNotNil() {
-			errors.Add(err.Subject(a))
-		} else {
-			p.routes.Set(a, r)
-		}
-	})
-	return errors.Build()
-}
-
-const reloadCooldown = 50 * time.Millisecond
--- a/src/proxy/reverse_proxy_mod.go
+++ b/src/proxy/reverse_proxy_mod.go
@@ -207,7 +207,7 @@ func joinURLPath(a, b *url.URL) (path, rawpath string) {
 //	}
 //
 // TODO: headers in ModifyResponse
-func NewReverseProxy(target *url.URL, transport *http.Transport, entry *Entry) *ReverseProxy {
+func NewReverseProxy(target *url.URL, transport http.RoundTripper, entry *ReverseProxyEntry) *ReverseProxy {
 	// check on init rather than on request
 	var setHeaders = func(r *http.Request) {}
 	var hideHeaders = func(r *http.Request) {}
--- a/src/route/http_route.go
+++ b/src/route/http_route.go
@@ -2,8 +2,8 @@ package route

 import (
 	"crypto/tls"
-	"fmt"
 	"net"
+	"sync"
 	"time"

 	"net/http"
@@ -11,6 +11,7 @@ import (
 	"strings"

 	"github.com/sirupsen/logrus"
+	"github.com/yusing/go-proxy/docker/idlewatcher"
 	E "github.com/yusing/go-proxy/error"
 	P "github.com/yusing/go-proxy/proxy"
 	PT "github.com/yusing/go-proxy/proxy/fields"
@@ -23,57 +24,65 @@ type (
 		TargetURL    *URL            `json:"target_url"`
 		PathPatterns PT.PathPatterns `json:"path_patterns"`

+		entry   *P.ReverseProxyEntry
 		mux     *http.ServeMux
 		handler *P.ReverseProxy
+
+		regIdleWatcher   func() E.NestedError
+		unregIdleWatcher func()
 	}

 	URL          url.URL
-	PathKey      = PT.PathPattern
 	SubdomainKey = PT.Alias
 )

-var httpRoutes = F.NewMap[SubdomainKey, *HTTPRoute]()
+func NewHTTPRoute(entry *P.ReverseProxyEntry) (*HTTPRoute, E.NestedError) {
+	var trans http.RoundTripper
+	var regIdleWatcher func() E.NestedError
+	var unregIdleWatcher func()

-func NewHTTPRoute(entry *P.Entry) (*HTTPRoute, E.NestedError) {
-	var tr *http.Transport
 	if entry.NoTLSVerify {
-		tr = transportNoTLS
+		trans = transportNoTLS
 	} else {
-		tr = transport
+		trans = transport
 	}

-	rp := P.NewReverseProxy(entry.URL, tr, entry)
+	rp := P.NewReverseProxy(entry.URL, trans, entry)

-	httpRoutes.Lock()
-	defer httpRoutes.Unlock()
-
-	var r *HTTPRoute
-	r, ok := httpRoutes.UnsafeGet(entry.Alias)
-	if !ok {
-		r = &HTTPRoute{
-			Alias:        entry.Alias,
-			TargetURL:    (*URL)(entry.URL),
-			PathPatterns: entry.PathPatterns,
-			handler:      rp,
+	if entry.UseIdleWatcher() {
+		regIdleWatcher = func() E.NestedError {
+			watcher, err := idlewatcher.Register(entry)
+			if err.HasError() {
+				return err
+			}
+			// patch round-tripper
+			rp.Transport = watcher.PatchRoundTripper(trans)
+			return nil
 		}
-		httpRoutes.UnsafeSet(entry.Alias, r)
-	}
-
-	rewrite := rp.Rewrite
-
-	if logrus.GetLevel() == logrus.DebugLevel {
-		l := logrus.WithField("alias", entry.Alias)
-
-		rp.Rewrite = func(pr *P.ProxyRequest) {
-			l.Debug("request URL: ", pr.In.Host, pr.In.URL.Path)
-			l.Debug("request headers: ", pr.In.Header)
-			rewrite(pr)
+		unregIdleWatcher = func() {
+			idlewatcher.Unregister(entry.ContainerName)
+			rp.Transport = trans
 		}
-	} else {
-		rp.Rewrite = rewrite
 	}

-	return r, E.Nil()
+	httpRoutesMu.Lock()
+	defer httpRoutesMu.Unlock()
+
+	_, exists := httpRoutes.Load(entry.Alias)
+	if exists {
+		return nil, E.AlreadyExist("HTTPRoute alias", entry.Alias)
+	}
+
+	r := &HTTPRoute{
+		Alias:            entry.Alias,
+		TargetURL:        (*URL)(entry.URL),
+		PathPatterns:     entry.PathPatterns,
+		entry:            entry,
+		handler:          rp,
+		regIdleWatcher:   regIdleWatcher,
+		unregIdleWatcher: unregIdleWatcher,
+	}
+	return r, nil
 }

 func (r *HTTPRoute) String() string {
@@ -81,18 +90,35 @@ func (r *HTTPRoute) String() string {
 }

 func (r *HTTPRoute) Start() E.NestedError {
+	httpRoutesMu.Lock()
+	defer httpRoutesMu.Unlock()
+
+	if r.regIdleWatcher != nil {
+		if err := r.regIdleWatcher(); err.HasError() {
+			return err
+		}
+	}
+
 	r.mux = http.NewServeMux()
 	for _, p := range r.PathPatterns {
 		r.mux.HandleFunc(string(p), r.handler.ServeHTTP)
 	}
-	httpRoutes.Set(r.Alias, r)
-	return E.Nil()
+
+	httpRoutes.Store(r.Alias, r)
+	return nil
 }

 func (r *HTTPRoute) Stop() E.NestedError {
+	httpRoutesMu.Lock()
+	defer httpRoutesMu.Unlock()
+
+	if r.unregIdleWatcher != nil {
+		r.unregIdleWatcher()
+	}
+
 	r.mux = nil
 	httpRoutes.Delete(r.Alias)
-	return E.Nil()
+	return nil
 }

 func (u *URL) String() string {
@@ -104,27 +130,26 @@ func (u *URL) MarshalText() (text []byte, err error) {
 }

 func ProxyHandler(w http.ResponseWriter, r *http.Request) {
-	mux, err := findMux(r.Host, PathKey(r.URL.Path))
+	mux, err := findMux(r.Host)
 	if err != nil {
 		err = E.Failure("request").
 			Subjectf("%s %s%s", r.Method, r.Host, r.URL.Path).
 			With(err)
-		http.Error(w, err.Error(), http.StatusNotFound)
+		http.Error(w, err.String(), http.StatusNotFound)
 		logrus.Error(err)
 		return
 	}
 	mux.ServeHTTP(w, r)
 }

-func findMux(host string, path PathKey) (*http.ServeMux, error) {
+func findMux(host string) (*http.ServeMux, E.NestedError) {
 	sd := strings.Split(host, ".")[0]
-	if r, ok := httpRoutes.UnsafeGet(PT.Alias(sd)); ok {
+	if r, ok := httpRoutes.Load(PT.Alias(sd)); ok {
 		return r.mux, nil
 	}
-	return nil, E.NotExists("route", fmt.Sprintf("subdomain: %s, path: %s", sd, path))
+	return nil, E.NotExist("route", sd)
 }

-// TODO: default + per proxy
 var (
 	transport = &http.Transport{
 		Proxy: http.ProxyFromEnvironment,
@@ -135,10 +160,13 @@ var (
 		MaxIdleConns:        1000,
 		MaxIdleConnsPerHost: 1000,
 	}
-
 	transportNoTLS = func() *http.Transport {
 		var clone = transport.Clone()
 		clone.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 		return clone
 	}()
+
+	httpRoutes   = F.NewMapOf[SubdomainKey, *HTTPRoute]()
+	httpRoutesMu sync.Mutex
+	globalMux    = http.NewServeMux()
 )
--- a/src/route/route.go
+++ b/src/route/route.go
@@ -1,6 +1,9 @@
 package route

 import (
+	"fmt"
+	"net/url"
+
 	E "github.com/yusing/go-proxy/error"
 	M "github.com/yusing/go-proxy/models"
 	P "github.com/yusing/go-proxy/proxy"
@@ -9,27 +12,81 @@ import (

 type (
 	Route interface {
+		RouteImpl
+		Entry() *M.RawEntry
+		Type() RouteType
+		URL() *url.URL
+	}
+	Routes    = F.Map[string, Route]
+	RouteType string
+
+	RouteImpl interface {
 		Start() E.NestedError
 		Stop() E.NestedError
 		String() string
 	}
-	Routes = F.Map[string, Route]
+	route struct {
+		RouteImpl
+		type_ RouteType
+		entry *M.RawEntry
+	}
+)
+
+const (
+	RouteTypeStream       RouteType = "stream"
+	RouteTypeReverseProxy RouteType = "reverse_proxy"
 )

 // function alias
-var NewRoutes = F.NewMap[string, Route]
+var NewRoutes = F.NewMapOf[string, Route]

-func NewRoute(en *M.ProxyEntry) (Route, E.NestedError) {
-	entry, err := P.NewEntry(en)
-	if err.IsNotNil() {
+func NewRoute(en *M.RawEntry) (Route, E.NestedError) {
+	rt, err := P.ValidateEntry(en)
+	if err.HasError() {
 		return nil, err
 	}
-	switch e := entry.(type) {
+
+	var t RouteType
+
+	switch e := rt.(type) {
 	case *P.StreamEntry:
-		return NewStreamRoute(e)
-	case *P.Entry:
-		return NewHTTPRoute(e)
+		rt, err = NewStreamRoute(e)
+		t = RouteTypeStream
+	case *P.ReverseProxyEntry:
+		rt, err = NewHTTPRoute(e)
+		t = RouteTypeReverseProxy
 	default:
 		panic("bug: should not reach here")
 	}
+	return &route{RouteImpl: rt.(RouteImpl), entry: en, type_: t}, err
+}
+
+func (rt *route) Entry() *M.RawEntry {
+	return rt.entry
+}
+
+func (rt *route) Type() RouteType {
+	return rt.type_
+}
+
+func (rt *route) URL() *url.URL {
+	url, _ := url.Parse(fmt.Sprintf("%s://%s", rt.entry.Scheme, rt.entry.Host))
+	return url
+}
+
+func FromEntries(entries M.RawEntries) (Routes, E.NestedError) {
+	b := E.NewBuilder("errors in routes")
+
+	routes := NewRoutes()
+	entries.RangeAll(func(alias string, entry *M.RawEntry) {
+		entry.Alias = alias
+		r, err := NewRoute(entry)
+		if err.HasError() {
+			b.Add(err.Subject(alias))
+		} else {
+			routes.Store(alias, r)
+		}
+	})
+
+	return routes, b.Build()
 }
--- a/src/route/stream_route.go
+++ b/src/route/stream_route.go
@@ -1,6 +1,7 @@
 package route

 import (
+	"context"
 	"fmt"
 	"sync"
 	"sync/atomic"
@@ -12,11 +13,13 @@ import (
 )

 type StreamRoute struct {
-	*P.StreamEntry
+	P.StreamEntry
 	StreamImpl `json:"-"`

-	wg      sync.WaitGroup
-	stopCh  chan struct{}
+	wg     sync.WaitGroup
+	ctx    context.Context
+	cancel context.CancelFunc
+
 	connCh  chan any
 	started atomic.Bool
 	l       logrus.FieldLogger
@@ -35,10 +38,8 @@ func NewStreamRoute(entry *P.StreamEntry) (*StreamRoute, E.NestedError) {
 		return nil, E.Unsupported("scheme", fmt.Sprintf("%v -> %v", entry.Scheme.ListeningScheme, entry.Scheme.ProxyScheme))
 	}
 	base := &StreamRoute{
-		StreamEntry: entry,
-		wg:          sync.WaitGroup{},
-		stopCh:      make(chan struct{}, 1),
-		connCh:      make(chan any),
+		StreamEntry: *entry,
+		connCh:      make(chan any, 100),
 	}
 	if entry.Scheme.ListeningScheme.IsTCP() {
 		base.StreamImpl = NewTCPRoute(base)
@@ -46,34 +47,35 @@ func NewStreamRoute(entry *P.StreamEntry) (*StreamRoute, E.NestedError) {
 		base.StreamImpl = NewUDPRoute(base)
 	}
 	base.l = logrus.WithField("route", base.StreamImpl)
-	return base, E.Nil()
+	return base, nil
 }

 func (r *StreamRoute) String() string {
-	return fmt.Sprintf("%s-stream: %s", r.Scheme, r.Alias)
+	return fmt.Sprintf("%s stream: %s", r.Scheme, r.Alias)
 }

 func (r *StreamRoute) Start() E.NestedError {
 	if r.started.Load() {
-		return E.Invalid("state", "already started")
+		return nil
 	}
+	r.ctx, r.cancel = context.WithCancel(context.Background())
 	r.wg.Wait()
 	if err := r.Setup(); err != nil {
-		return E.Failure("setup").With(err)
+		return E.FailWith("setup", err)
 	}
 	r.started.Store(true)
 	r.wg.Add(2)
 	go r.grAcceptConnections()
 	go r.grHandleConnections()
-	return E.Nil()
+	return nil
 }

 func (r *StreamRoute) Stop() E.NestedError {
 	if !r.started.Load() {
-		return E.Invalid("state", "not started")
+		return nil
 	}
 	l := r.l
-	close(r.stopCh)
+	r.cancel()
 	r.CloseListeners()

 	done := make(chan struct{}, 1)
@@ -82,13 +84,16 @@ func (r *StreamRoute) Stop() E.NestedError {
 		close(done)
 	}()

-	select {
-	case <-done:
-		l.Info("stopped listening")
-	case <-time.After(streamStopListenTimeout):
-		l.Error("timed out waiting for connections")
+	timeout := time.After(streamStopListenTimeout)
+	for {
+		select {
+		case <-done:
+			l.Debug("stopped listening")
+			return nil
+		case <-timeout:
+			return E.FailedWhy("stop", "timed out")
+		}
 	}
-	return E.Nil()
 }

 func (r *StreamRoute) grAcceptConnections() {
@@ -96,13 +101,13 @@ func (r *StreamRoute) grAcceptConnections() {

 	for {
 		select {
-		case <-r.stopCh:
+		case <-r.ctx.Done():
 			return
 		default:
 			conn, err := r.Accept()
 			if err != nil {
 				select {
-				case <-r.stopCh:
+				case <-r.ctx.Done():
 					return
 				default:
 					r.l.Error(err)
@@ -119,7 +124,7 @@ func (r *StreamRoute) grHandleConnections() {

 	for {
 		select {
-		case <-r.stopCh:
+		case <-r.ctx.Done():
 			return
 		case conn := <-r.connCh:
 			go func() {
--- a/src/route/tcp_route.go
+++ b/src/route/tcp_route.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net"
 	"sync"
+	"syscall"
 	"time"

 	U "github.com/yusing/go-proxy/utils"
@@ -24,7 +25,6 @@ type TCPRoute struct {
 func NewTCPRoute(base *StreamRoute) StreamImpl {
 	return &TCPRoute{
 		StreamRoute: base,
-		listener:    nil,
 		pipe:        make(Pipes, 0),
 	}
 }
@@ -38,16 +38,16 @@ func (route *TCPRoute) Setup() error {
 	return nil
 }

-func (route *TCPRoute) Accept() (interface{}, error) {
+func (route *TCPRoute) Accept() (any, error) {
 	return route.listener.Accept()
 }

-func (route *TCPRoute) Handle(c interface{}) error {
+func (route *TCPRoute) Handle(c any) error {
 	clientConn := c.(net.Conn)

 	defer clientConn.Close()

-	ctx, cancel := context.WithTimeout(context.Background(), tcpDialTimeout)
+	ctx, cancel := context.WithTimeout(route.ctx, tcpDialTimeout)
 	defer cancel()

 	serverAddr := fmt.Sprintf("%s:%v", route.Host, route.Port.ProxyPort)
@@ -58,16 +58,11 @@ func (route *TCPRoute) Handle(c interface{}) error {
 		return err
 	}

-	pipeCtx, pipeCancel := context.WithCancel(context.Background())
-	go func() {
-		<-route.stopCh
-		pipeCancel()
-	}()
-
 	route.mu.Lock()
-	pipe := U.NewBidirectionalPipe(pipeCtx, clientConn, serverConn)
+	defer route.mu.Unlock()
+
+	pipe := U.NewBidirectionalPipe(route.ctx, clientConn, serverConn)
 	route.pipe = append(route.pipe, pipe)
-	route.mu.Unlock()
 	return pipe.Start()
 }

@@ -78,8 +73,15 @@ func (route *TCPRoute) CloseListeners() {
 	route.listener.Close()
 	route.listener = nil
 	for _, pipe := range route.pipe {
-		if err := pipe.Stop(); err.IsNotNil() {
-			route.l.Error(err)
+		if err := pipe.Stop(); err != nil {
+			switch err {
+			// target closing connection
+			// TODO: handle this by fixing utils/io.go
+			case net.ErrClosed, syscall.EPIPE:
+				return
+			default:
+				route.l.Error(err)
+			}
 		}
 	}
 }
--- a/src/route/udp_route.go
+++ b/src/route/udp_route.go
@@ -1,7 +1,6 @@
 package route

 import (
-	"context"
 	"fmt"
 	"io"
 	"net"
@@ -36,7 +35,7 @@ func NewUDPRoute(base *StreamRoute) StreamImpl {
 }

 func (route *UDPRoute) Setup() error {
-	laddr, err := net.ResolveUDPAddr(string(route.Scheme.ListeningScheme), fmt.Sprintf(":%v", route.Port.ProxyPort))
+	laddr, err := net.ResolveUDPAddr(string(route.Scheme.ListeningScheme), fmt.Sprintf(":%v", route.Port.ListeningPort))
 	if err != nil {
 		return err
 	}
@@ -55,7 +54,7 @@ func (route *UDPRoute) Setup() error {
 	return nil
 }

-func (route *UDPRoute) Accept() (interface{}, error) {
+func (route *UDPRoute) Accept() (any, error) {
 	in := route.listeningConn

 	buffer := make([]byte, udpBufferSize)
@@ -84,15 +83,10 @@ func (route *UDPRoute) Accept() (interface{}, error) {
 				srcConn.Close()
 				return nil, err
 			}
-			pipeCtx, pipeCancel := context.WithCancel(context.Background())
-			go func() {
-				<-route.stopCh
-				pipeCancel()
-			}()
 			conn = &UDPConn{
 				srcConn,
 				dstConn,
-				utils.NewBidirectionalPipe(pipeCtx, sourceRWCloser{in, dstConn}, sourceRWCloser{in, srcConn}),
+				utils.NewBidirectionalPipe(route.ctx, sourceRWCloser{in, dstConn}, sourceRWCloser{in, srcConn}),
 			}
 			route.connMap[key] = conn
 		}
@@ -103,7 +97,7 @@ func (route *UDPRoute) Accept() (interface{}, error) {
 	return conn, err
 }

-func (route *UDPRoute) Handle(c interface{}) error {
+func (route *UDPRoute) Handle(c any) error {
 	return c.(*UDPConn).Start()
 }

--- a/src/server/server.go
+++ b/src/server/server.go
@@ -22,11 +22,9 @@ type server struct {
 }

 type Options struct {
-	Name string
-	// port (with leading colon)
-	HTTPPort string
-	// port (with leading colon)
-	HTTPSPort       string
+	Name            string
+	HTTPAddr        string
+	HTTPSAddr       string
 	CertProvider    *autocert.Provider
 	RedirectToHTTPS bool
 	Handler         http.Handler
@@ -55,22 +53,22 @@ func NewServer(opt Options) (s *server) {
 		certAvailable = err == nil
 	}

-	if certAvailable && opt.RedirectToHTTPS && opt.HTTPSPort != "" {
-		httpHandler = redirectToTLSHandler(opt.HTTPSPort)
+	if certAvailable && opt.RedirectToHTTPS && opt.HTTPSAddr != "" {
+		httpHandler = redirectToTLSHandler(opt.HTTPSAddr)
 	} else {
 		httpHandler = opt.Handler
 	}

-	if opt.HTTPPort != "" {
+	if opt.HTTPAddr != "" {
 		httpSer = &http.Server{
-			Addr:     opt.HTTPPort,
+			Addr:     opt.HTTPAddr,
 			Handler:  httpHandler,
 			ErrorLog: logger,
 		}
 	}
-	if certAvailable && opt.HTTPSPort != "" {
+	if certAvailable && opt.HTTPSAddr != "" {
 		httpsSer = &http.Server{
-			Addr:     opt.HTTPSPort,
+			Addr:     opt.HTTPSAddr,
 			Handler:  opt.Handler,
 			ErrorLog: logger,
 			TLSConfig: &tls.Config{
--- a/src/utils/format.go
+++ b/src/utils/format.go
@@ -20,16 +20,16 @@ func FormatDuration(d time.Duration) string {
 	var parts []string

 	if days > 0 {
-		parts = append(parts, fmt.Sprintf("%d Day%s", days, pluralize(days)))
+		parts = append(parts, fmt.Sprintf("%d day%s", days, pluralize(days)))
 	}
 	if hours > 0 {
-		parts = append(parts, fmt.Sprintf("%d Hour%s", hours, pluralize(hours)))
+		parts = append(parts, fmt.Sprintf("%d hour%s", hours, pluralize(hours)))
 	}
 	if minutes > 0 {
-		parts = append(parts, fmt.Sprintf("%d Minute%s", minutes, pluralize(minutes)))
+		parts = append(parts, fmt.Sprintf("%d minute%s", minutes, pluralize(minutes)))
 	}
 	if seconds > 0 {
-		parts = append(parts, fmt.Sprintf("%d Second%s", seconds, pluralize(seconds)))
+		parts = append(parts, fmt.Sprintf("%d second%s", seconds, pluralize(seconds)))
 	}

 	// Join the parts with appropriate connectors
@@ -42,6 +42,15 @@ func FormatDuration(d time.Duration) string {
 	return strings.Join(parts[:len(parts)-1], ", ") + " and " + parts[len(parts)-1]
 }

+func ParseBool(s string) bool {
+	switch strings.ToLower(s) {
+	case "1", "true", "yes", "on":
+		return true
+	default:
+		return false
+	}
+}
+
 func pluralize(n int64) string {
 	if n > 1 {
 		return "s"
--- a/src/utils/fs.go
+++ b/src/utils/fs.go
@@ -1,15 +0,0 @@
-package utils
-
-import (
-	"os"
-	"path"
-)
-
-func FileOK(p string) bool {
-	_, err := os.Stat(p)
-	return err == nil
-}
-
-func FileName(p string) string {
-	return path.Base(p)
-}
--- a/src/utils/functional/functional.go
+++ b/src/utils/functional/functional.go
@@ -2,25 +2,25 @@ package functional

 import "sync"

-func ForEachKey[K comparable, V interface{}](obj map[K]V, do func(K)) {
+func ForEachKey[K comparable, V any](obj map[K]V, do func(K)) {
 	for k := range obj {
 		do(k)
 	}
 }

-func ForEachValue[K comparable, V interface{}](obj map[K]V, do func(V)) {
+func ForEachValue[K comparable, V any](obj map[K]V, do func(V)) {
 	for _, v := range obj {
 		do(v)
 	}
 }

-func ForEachKV[K comparable, V interface{}](obj map[K]V, do func(K, V)) {
+func ForEachKV[K comparable, V any](obj map[K]V, do func(K, V)) {
 	for k, v := range obj {
 		do(k, v)
 	}
 }

-func ParallelForEach[T interface{}](obj []T, do func(T)) {
+func ParallelForEach[T any](obj []T, do func(T)) {
 	var wg sync.WaitGroup
 	wg.Add(len(obj))
 	for _, v := range obj {
@@ -32,7 +32,7 @@ func ParallelForEach[T interface{}](obj []T, do func(T)) {
 	wg.Wait()
 }

-func ParallelForEachKey[K comparable, V interface{}](obj map[K]V, do func(K)) {
+func ParallelForEachKey[K comparable, V any](obj map[K]V, do func(K)) {
 	var wg sync.WaitGroup
 	wg.Add(len(obj))
 	for k := range obj {
@@ -44,7 +44,7 @@ func ParallelForEachKey[K comparable, V interface{}](obj map[K]V, do func(K)) {
 	wg.Wait()
 }

-func ParallelForEachValue[K comparable, V interface{}](obj map[K]V, do func(V)) {
+func ParallelForEachValue[K comparable, V any](obj map[K]V, do func(V)) {
 	var wg sync.WaitGroup
 	wg.Add(len(obj))
 	for _, v := range obj {
@@ -56,7 +56,7 @@ func ParallelForEachValue[K comparable, V interface{}](obj map[K]V, do func(V))
 	wg.Wait()
 }

-func ParallelForEachKV[K comparable, V interface{}](obj map[K]V, do func(K, V)) {
+func ParallelForEachKV[K comparable, V any](obj map[K]V, do func(K, V)) {
 	var wg sync.WaitGroup
 	wg.Add(len(obj))
 	for k, v := range obj {
--- a/src/utils/functional/map.go
+++ b/src/utils/functional/map.go
@@ -1,229 +1,116 @@
 package functional

 import (
-	"context"
-	"sync"
-
+	"github.com/puzpuzpuz/xsync/v3"
 	"gopkg.in/yaml.v3"

 	E "github.com/yusing/go-proxy/error"
 )

-type Map[KT comparable, VT interface{}] struct {
-	m       map[KT]VT
-	defVals map[KT]VT
-	sync.RWMutex
+type Map[KT comparable, VT any] struct {
+	*xsync.MapOf[KT, VT]
 }

-// NewMap creates a new Map with the given map as its initial values.
-//
-// Parameters:
-// - dv: optional default values for the Map
-//
-// Return:
-// - *Map[KT, VT]: a pointer to the newly created Map.
-func NewMap[KT comparable, VT interface{}](dv ...map[KT]VT) *Map[KT, VT] {
-	return NewMapFrom(make(map[KT]VT), dv...)
+func NewMapOf[KT comparable, VT any](options ...func(*xsync.MapConfig)) Map[KT, VT] {
+	return Map[KT, VT]{xsync.NewMapOf[KT, VT](options...)}
 }

-// NewMapOf creates a new Map with the given map as its initial values.
-//
-// Type parameters:
-// - M: type for the new map.
-//
-// Parameters:
-// - dv: optional default values for the Map
-//
-// Return:
-// - *Map[KT, VT]: a pointer to the newly created Map.
-func NewMapOf[M Map[KT, VT], KT comparable, VT interface{}](dv ...map[KT]VT) *Map[KT, VT] {
-	return NewMapFrom(make(map[KT]VT), dv...)
-}
-
-// NewMapFrom creates a new Map with the given map as its initial values.
-//
-// Parameters:
-// - from: a map of type KT to VT, which will be the initial values of the Map.
-// - dv: optional default values for the Map
-//
-// Return:
-// - *Map[KT, VT]: a pointer to the newly created Map.
-func NewMapFrom[KT comparable, VT interface{}](from map[KT]VT, dv ...map[KT]VT) *Map[KT, VT] {
-	if len(dv) > 0 {
-		return &Map[KT, VT]{m: from, defVals: dv[0]}
+func NewMapFrom[KT comparable, VT any](m map[KT]VT) (res Map[KT, VT]) {
+	res = NewMapOf[KT, VT](xsync.WithPresize(len(m)))
+	for k, v := range m {
+		res.Store(k, v)
 	}
-	return &Map[KT, VT]{m: from}
+	return
 }

-func (m *Map[KT, VT]) Set(key KT, value VT) {
-	m.Lock()
-	m.m[key] = value
-	m.Unlock()
-}
+func MapFind[KT comparable, VT, CT any](m Map[KT, VT], criteria func(VT) (CT, bool)) (_ CT) {
+	result := make(chan CT, 1)

-func (m *Map[KT, VT]) Get(key KT) VT {
-	m.RLock()
-	defer m.RUnlock()
-	value, ok := m.m[key]
-	if !ok && m.defVals != nil {
-		return m.defVals[key]
-	}
-	return value
-}
-
-// Find searches for the first element in the map that satisfies the given criteria.
-//
-// Parameters:
-// - criteria: a function that takes a value of type VT and returns a tuple of any type and a boolean.
-//
-// Return:
-// - any: the first value that satisfies the criteria, or nil if no match is found.
-func (m *Map[KT, VT]) Find(criteria func(VT) (any, bool)) any {
-	m.RLock()
-	defer m.RUnlock()
-
-	result := make(chan any)
-	wg := sync.WaitGroup{}
-
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	for _, v := range m.m {
-		wg.Add(1)
-		go func(val VT) {
-			defer wg.Done()
-			if value, ok := criteria(val); ok {
-				select {
-				case result <- value:
-					cancel() // Cancel other goroutines if a result is found
-				case <-ctx.Done(): // If already cancelled
-					return
-				}
+	m.Range(func(key KT, value VT) bool {
+		select {
+		case <-result: // already have a result
+			return false // stop iteration
+		default:
+			if got, ok := criteria(value); ok {
+				result <- got
+				return false
 			}
-		}(v)
-	}
-
-	go func() {
-		wg.Wait()
-		close(result)
-	}()
-
-	// The first valid match, if any
-	select {
-	case res, ok := <-result:
-		if ok {
-			return res
+			return true
 		}
-	case <-ctx.Done():
+	})
+
+	select {
+	case v := <-result:
+		return v
+	default:
+		return
 	}
-
-	return nil // Return nil if no matches found
 }

-func (m *Map[KT, VT]) UnsafeGet(key KT) (VT, bool) {
-	value, ok := m.m[key]
-	return value, ok
-}
-
-func (m *Map[KT, VT]) UnsafeSet(key KT, value VT) {
-	m.m[key] = value
-}
-
-func (m *Map[KT, VT]) Delete(key KT) {
-	m.Lock()
-	delete(m.m, key)
-	m.Unlock()
-}
-
-func (m *Map[KT, VT]) UnsafeDelete(key KT) {
-	delete(m.m, key)
-}
-
-// MergeWith merges the contents of another Map[KT, VT]
-// into the current Map[KT, VT] and
-// returns a map that were duplicated.
+// MergeFrom add contents from another `Map`, ignore duplicated keys
 //
 // Parameters:
-// - other: a pointer to another Map[KT, VT] to be merged into the current Map[KT, VT].
+// - other: `Map` of values to add from
 //
 // Return:
-// - Map[KT, VT]: a map of key-value pairs that were duplicated during the merge.
-func (m *Map[KT, VT]) MergeWith(other *Map[KT, VT]) Map[KT, VT] {
-	dups := make(map[KT]VT)
+// - Map: a `Map` of duplicated keys-value pairs
+func (m Map[KT, VT]) MergeFrom(other Map[KT, VT]) Map[KT, VT] {
+	dups := NewMapOf[KT, VT]()

-	m.Lock()
-	for k, v := range other.m {
-		if _, isDup := m.m[k]; !isDup {
-			m.m[k] = v
+	other.Range(func(k KT, v VT) bool {
+		if _, ok := m.Load(k); ok {
+			dups.Store(k, v)
 		} else {
-			dups[k] = v
+			m.Store(k, v)
 		}
-	}
-	m.Unlock()
-	return Map[KT, VT]{m: dups}
+		return true
+	})
+	return dups
 }

-func (m *Map[KT, VT]) Clear() {
-	m.Lock()
-	m.m = make(map[KT]VT)
-	m.Unlock()
+func (m Map[KT, VT]) RangeAll(do func(k KT, v VT)) {
+	m.Range(func(k KT, v VT) bool {
+		do(k, v)
+		return true
+	})
 }

-func (m *Map[KT, VT]) Size() int {
-	m.RLock()
-	defer m.RUnlock()
-	return len(m.m)
+func (m Map[KT, VT]) RemoveAll(criteria func(VT) bool) {
+	m.Range(func(k KT, v VT) bool {
+		if criteria(v) {
+			m.Delete(k)
+		}
+		return true
+	})
 }

-func (m *Map[KT, VT]) Contains(key KT) bool {
-	m.RLock()
-	_, ok := m.m[key]
-	m.RUnlock()
+func (m Map[KT, VT]) Has(k KT) bool {
+	_, ok := m.Load(k)
 	return ok
 }

-func (m *Map[KT, VT]) Clone() *Map[KT, VT] {
-	m.RLock()
-	defer m.RUnlock()
-	clone := make(map[KT]VT, len(m.m))
-	for k, v := range m.m {
-		clone[k] = v
+func (m Map[KT, VT]) UnmarshalFromYAML(data []byte) E.NestedError {
+	if m.Size() != 0 {
+		return E.FailedWhy("unmarshal from yaml", "map is not empty")
 	}
-	return &Map[KT, VT]{m: clone, defVals: m.defVals}
-}
-
-func (m *Map[KT, VT]) EachKV(fn func(k KT, v VT)) {
-	m.Lock()
-	for k, v := range m.m {
-		fn(k, v)
+	tmp := make(map[KT]VT)
+	if err := E.From(yaml.Unmarshal(data, tmp)); err.HasError() {
+		return err
 	}
-	m.Unlock()
-}
-
-func (m *Map[KT, VT]) Each(fn func(v VT)) {
-	m.Lock()
-	for _, v := range m.m {
-		fn(v)
+	for k, v := range tmp {
+		m.Store(k, v)
 	}
-	m.Unlock()
+	return nil
 }

-func (m *Map[KT, VT]) EachParallel(fn func(v VT)) {
-	m.Lock()
-	ParallelForEachValue(m.m, fn)
-	m.Unlock()
-}
-
-func (m *Map[KT, VT]) EachKVParallel(fn func(k KT, v VT)) {
-	m.Lock()
-	ParallelForEachKV(m.m, fn)
-	m.Unlock()
-}
-
-func (m *Map[KT, VT]) UnmarshalFromYAML(data []byte) E.NestedError {
-	return E.From(yaml.Unmarshal(data, m.m))
-}
-
-func (m *Map[KT, VT]) Iterator() map[KT]VT {
-	return m.m
+func (m Map[KT, VT]) String() string {
+	tmp := make(map[KT]VT, m.Size())
+	m.RangeAll(func(k KT, v VT) {
+		tmp[k] = v
+	})
+	data, err := yaml.Marshal(tmp)
+	if err != nil {
+		return err.Error()
+	}
+	return string(data)
 }
--- a/src/utils/functional/map_test.go
+++ b/src/utils/functional/map_test.go
@@ -0,0 +1,75 @@
+package functional_test
+
+import (
+	"testing"
+
+	. "github.com/yusing/go-proxy/utils/functional"
+	. "github.com/yusing/go-proxy/utils/testing"
+)
+
+func TestNewMapFrom(t *testing.T) {
+	m := NewMapFrom(map[string]int{
+		"a": 1,
+		"b": 2,
+		"c": 3,
+	})
+	ExpectEqual(t, m.Size(), 3)
+	ExpectTrue(t, m.Has("a"))
+	ExpectTrue(t, m.Has("b"))
+	ExpectTrue(t, m.Has("c"))
+}
+
+func TestMapFind(t *testing.T) {
+	m := NewMapFrom(map[string]map[string]int{
+		"a": {
+			"a": 1,
+		},
+		"b": {
+			"a": 1,
+			"b": 2,
+		},
+		"c": {
+			"b": 2,
+			"c": 3,
+		},
+	})
+	res := MapFind(m, func(inner map[string]int) (int, bool) {
+		if _, ok := inner["c"]; ok && inner["c"] == 3 {
+			return inner["c"], true
+		}
+		return 0, false
+	})
+	ExpectEqual(t, res, 3)
+}
+
+func TestMergeFrom(t *testing.T) {
+	m1 := NewMapFrom(map[string]int{
+		"a": 1,
+		"b": 2,
+		"c": 3,
+		"d": 4,
+	})
+	m2 := NewMapFrom(map[string]int{
+		"a": 1,
+		"c": 123,
+		"e": 456,
+		"f": 6,
+	})
+	dup := m1.MergeFrom(m2)
+
+	ExpectEqual(t, m1.Size(), 6)
+	ExpectTrue(t, m1.Has("e"))
+	ExpectTrue(t, m1.Has("f"))
+	c, _ := m1.Load("c")
+	d, _ := m1.Load("d")
+	e, _ := m1.Load("e")
+	f, _ := m1.Load("f")
+	ExpectEqual(t, c, 3)
+	ExpectEqual(t, d, 4)
+	ExpectEqual(t, e, 456)
+	ExpectEqual(t, f, 6)
+
+	ExpectEqual(t, dup.Size(), 2)
+	ExpectTrue(t, dup.Has("a"))
+	ExpectTrue(t, dup.Has("c"))
+}
--- a/src/utils/io.go
+++ b/src/utils/io.go
@@ -2,6 +2,7 @@ package utils

 import (
 	"context"
+	"encoding/json"
 	"io"
 	"os"
 	"sync/atomic"
@@ -9,15 +10,8 @@ import (
 	E "github.com/yusing/go-proxy/error"
 )

+// TODO: move to "utils/io"
 type (
-	Reader interface {
-		Read() ([]byte, E.NestedError)
-	}
-
-	StdReader struct {
-		r Reader
-	}
-
 	FileReader struct {
 		Path string
 	}
@@ -28,13 +22,6 @@ type (
 		closed atomic.Bool
 	}

-	StdReadCloser struct {
-		r *ReadCloser
-	}
-
-	ByteReader    []byte
-	NewByteReader = ByteReader
-
 	Pipe struct {
 		r      ReadCloser
 		w      io.WriteCloser
@@ -43,49 +30,25 @@ type (
 	}

 	BidirectionalPipe struct {
-		pSrcDst Pipe
-		pDstSrc Pipe
+		pSrcDst *Pipe
+		pDstSrc *Pipe
 	}
 )

-func NewFileReader(path string) *FileReader {
-	return &FileReader{Path: path}
-}
-
-func (r StdReader) Read() ([]byte, error) {
-	return r.r.Read()
-}
-
-func (r *FileReader) Read() ([]byte, E.NestedError) {
-	return E.Check(os.ReadFile(r.Path))
-}
-
-func (r ByteReader) Read() ([]byte, E.NestedError) {
-	return r, E.Nil()
-}
-
-func (r *ReadCloser) Read(p []byte) (int, E.NestedError) {
+func (r *ReadCloser) Read(p []byte) (int, error) {
 	select {
 	case <-r.ctx.Done():
-		return 0, E.From(r.ctx.Err())
+		return 0, r.ctx.Err()
 	default:
-		return E.Check(r.r.Read(p))
+		return r.r.Read(p)
 	}
 }

-func (r *ReadCloser) Close() E.NestedError {
+func (r *ReadCloser) Close() error {
 	if r.closed.Load() {
-		return E.Nil()
+		return nil
 	}
 	r.closed.Store(true)
-	return E.From(r.r.Close())
-}
-
-func (r StdReadCloser) Read(p []byte) (int, error) {
-	return r.r.Read(p)
-}
-
-func (r StdReadCloser) Close() error {
 	return r.r.Close()
 }

@@ -99,35 +62,35 @@ func NewPipe(ctx context.Context, r io.ReadCloser, w io.WriteCloser) *Pipe {
 	}
 }

-func (p *Pipe) Start() E.NestedError {
-	return Copy(p.ctx, p.w, &StdReadCloser{&p.r})
+func (p *Pipe) Start() error {
+	return Copy(p.ctx, p.w, &p.r)
 }

-func (p *Pipe) Stop() E.NestedError {
+func (p *Pipe) Stop() error {
 	p.cancel()
-	return E.Join("error stopping pipe", p.r.Close(), p.w.Close())
+	return E.JoinE("error stopping pipe", p.r.Close(), p.w.Close()).Error()
 }

-func (p *Pipe) Write(b []byte) (int, E.NestedError) {
-	return E.Check(p.w.Write(b))
+func (p *Pipe) Write(b []byte) (int, error) {
+	return p.w.Write(b)
 }

 func NewBidirectionalPipe(ctx context.Context, rw1 io.ReadWriteCloser, rw2 io.ReadWriteCloser) *BidirectionalPipe {
 	return &BidirectionalPipe{
-		pSrcDst: *NewPipe(ctx, rw1, rw2),
-		pDstSrc: *NewPipe(ctx, rw2, rw1),
+		pSrcDst: NewPipe(ctx, rw1, rw2),
+		pDstSrc: NewPipe(ctx, rw2, rw1),
 	}
 }

 func NewBidirectionalPipeIntermediate(ctx context.Context, listener io.ReadCloser, client io.ReadWriteCloser, target io.ReadWriteCloser) *BidirectionalPipe {
 	return &BidirectionalPipe{
-		pSrcDst: *NewPipe(ctx, listener, client),
-		pDstSrc: *NewPipe(ctx, client, target),
+		pSrcDst: NewPipe(ctx, listener, client),
+		pDstSrc: NewPipe(ctx, client, target),
 	}
 }

-func (p *BidirectionalPipe) Start() E.NestedError {
-	errCh := make(chan E.NestedError, 2)
+func (p *BidirectionalPipe) Start() error {
+	errCh := make(chan error, 2)
 	go func() {
 		errCh <- p.pSrcDst.Start()
 	}()
@@ -135,18 +98,34 @@ func (p *BidirectionalPipe) Start() E.NestedError {
 		errCh <- p.pDstSrc.Start()
 	}()
 	for err := range errCh {
-		if err.IsNotNil() {
+		if err != nil {
 			return err
 		}
 	}
-	return E.Nil()
+	return nil
 }

-func (p *BidirectionalPipe) Stop() E.NestedError {
-	return E.Join("error stopping pipe", p.pSrcDst.Stop(), p.pDstSrc.Stop())
+func (p *BidirectionalPipe) Stop() error {
+	return E.JoinE("error stopping pipe", p.pSrcDst.Stop(), p.pDstSrc.Stop()).Error()
 }

-func Copy(ctx context.Context, dst io.WriteCloser, src io.ReadCloser) E.NestedError {
-	_, err := io.Copy(dst, StdReadCloser{&ReadCloser{ctx: ctx, r: src}})
-	return E.From(err)
-}
+func Copy(ctx context.Context, dst io.WriteCloser, src io.ReadCloser) error {
+	_, err := io.Copy(dst, &ReadCloser{ctx: ctx, r: src})
+	return err
+}
+
+func LoadJson[T any](path string, pointer *T) E.NestedError {
+	data, err := E.Check(os.ReadFile(path))
+	if err.HasError() {
+		return err
+	}
+	return E.From(json.Unmarshal(data, pointer))
+}
+
+func SaveJson[T any](path string, pointer *T, perm os.FileMode) E.NestedError {
+	data, err := E.Check(json.Marshal(pointer))
+	if err.HasError() {
+		return err
+	}
+	return E.From(os.WriteFile(path, data, perm))
+}
--- a/src/utils/reflection.go
+++ b/src/utils/reflection.go
@@ -1,24 +0,0 @@
-package utils
-
-import (
-	"net/http"
-	"reflect"
-	"strings"
-
-	E "github.com/yusing/go-proxy/error"
-)
-
-func snakeToPascal(s string) string {
-	toHyphenCamel := http.CanonicalHeaderKey(strings.ReplaceAll(s, "_", "-"))
-	return strings.ReplaceAll(toHyphenCamel, "-", "")
-}
-
-func SetFieldFromSnake[T, VT any](obj *T, field string, value VT) E.NestedError {
-	field = snakeToPascal(field)
-	prop := reflect.ValueOf(obj).Elem().FieldByName(field)
-	if prop.Kind() == 0 {
-		return E.Invalid("field", field)
-	}
-	prop.Set(reflect.ValueOf(value))
-	return E.Nil()
-}
--- a/src/utils/schema.go
+++ b/src/utils/schema.go
@@ -2,7 +2,6 @@ package utils

 import (
 	"github.com/santhosh-tekuri/jsonschema"
-	"github.com/yusing/go-proxy/common"
 )

 var schemaCompiler = func() *jsonschema.Compiler {
@@ -11,16 +10,13 @@ var schemaCompiler = func() *jsonschema.Compiler {
 	return c
 }()

-var schemaStorage = make(map[string] *jsonschema.Schema)
+var schemaStorage = make(map[string]*jsonschema.Schema)

 func GetSchema(path string) *jsonschema.Schema {
-	if common.NoSchemaValidation {
-		panic("bug: GetSchema called when schema validation disabled")
-	}
 	if schema, ok := schemaStorage[path]; ok {
 		return schema
 	}
 	schema := schemaCompiler.MustCompile(path)
 	schemaStorage[path] = schema
 	return schema
-}
+}
--- a/src/utils/serialization.go
+++ b/src/utils/serialization.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"reflect"
+	"strings"

 	"github.com/santhosh-tekuri/jsonschema"
 	E "github.com/yusing/go-proxy/error"
@@ -12,50 +13,31 @@ import (
 )

 func ValidateYaml(schema *jsonschema.Schema, data []byte) E.NestedError {
-	var i interface{}
+	var i any

 	err := yaml.Unmarshal(data, &i)
 	if err != nil {
-		return E.Failure("unmarshal yaml").With(err)
+		return E.FailWith("unmarshal yaml", err)
 	}

 	m, err := json.Marshal(i)
 	if err != nil {
-		return E.Failure("marshal json").With(err)
+		return E.FailWith("marshal json", err)
 	}

 	err = schema.Validate(bytes.NewReader(m))
 	if err == nil {
-		return E.Nil()
+		return nil
 	}

 	errors := E.NewBuilder("yaml validation error")
 	for _, e := range err.(*jsonschema.ValidationError).Causes {
-		errors.Add(e)
+		errors.AddE(e)
 	}
 	return errors.Build()
 }

-// TryJsonStringify converts the given object to a JSON string.
-//
-// It takes an object of any type and attempts to marshal it into a JSON string.
-// If the marshaling is successful, the JSON string is returned.
-// If the marshaling fails, the object is converted to a string using fmt.Sprint and returned.
-//
-// Parameters:
-// - o: The object to be converted to a JSON string.
-//
-// Return type:
-// - string: The JSON string representation of the object.
-func TryJsonStringify(o any) string {
-	b, err := json.Marshal(o)
-	if err != nil {
-		return fmt.Sprint(o)
-	}
-	return string(b)
-}
-
-// Serialize converts the given data into a map[string]interface{} representation.
+// Serialize converts the given data into a map[string]any representation.
 //
 // It uses reflection to inspect the data type and handle different kinds of data.
 // For a struct, it extracts the fields using the json tag if present, or the field name if not.
@@ -66,9 +48,9 @@ func TryJsonStringify(o any) string {
 // - data: The data to be converted into a map.
 //
 // Returns:
-// - result: The resulting map[string]interface{} representation of the data.
+// - result: The resulting map[string]any representation of the data.
 // - error: An error if the data type is unsupported or if there is an error during conversion.
-func Serialize(data interface{}) (SerializedObject, error) {
+func Serialize(data any) (SerializedObject, E.NestedError) {
 	result := make(map[string]any)

 	// Use reflection to inspect the data type
@@ -76,7 +58,7 @@ func Serialize(data interface{}) (SerializedObject, error) {

 	// Check if the value is valid
 	if !value.IsValid() {
-		return nil, fmt.Errorf("invalid data")
+		return nil, E.Invalid("data", fmt.Sprintf("type: %T", data))
 	}

 	// Dereference pointers if necessary
@@ -107,7 +89,7 @@ func Serialize(data interface{}) (SerializedObject, error) {
 			} else if field.Anonymous {
 				// If the field is an embedded struct, add its fields to the result
 				fieldMap, err := Serialize(value.Field(i).Interface())
-				if err != nil {
+				if err.HasError() {
 					return nil, err
 				}
 				for k, v := range fieldMap {
@@ -118,10 +100,80 @@ func Serialize(data interface{}) (SerializedObject, error) {
 			}
 		}
 	default:
-		return nil, fmt.Errorf("unsupported type: %s", value.Kind())
+		// return nil, fmt.Errorf("unsupported type: %s", value.Kind())
+		return nil, E.Unsupported("type", value.Kind())
 	}

 	return result, nil
 }

-type SerializedObject map[string]any
+func Deserialize(src map[string]any, target any) E.NestedError {
+	// convert data fields to lower no-snake
+	// convert target fields to lower
+	// then check if the field of data is in the target
+	mapping := make(map[string]string)
+	t := reflect.TypeOf(target).Elem()
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		snakeCaseField := strings.ToLower(field.Name)
+		mapping[snakeCaseField] = field.Name
+	}
+	for k, v := range src {
+		kCleaned := toLowerNoSnake(k)
+		if fieldName, ok := mapping[kCleaned]; ok {
+			prop := reflect.ValueOf(target).Elem().FieldByName(fieldName)
+			propType := prop.Type()
+			isPtr := prop.Kind() == reflect.Ptr
+			if prop.CanSet() {
+				val := reflect.ValueOf(v)
+				vType := val.Type()
+				switch {
+				case isPtr && vType.ConvertibleTo(propType.Elem()):
+					ptr := reflect.New(propType.Elem())
+					ptr.Elem().Set(val.Convert(propType.Elem()))
+					prop.Set(ptr)
+				case vType.ConvertibleTo(propType):
+					prop.Set(val.Convert(propType))
+				case isPtr:
+					var vSerialized SerializedObject
+					vSerialized, ok = v.(SerializedObject)
+					if !ok {
+						if vType.ConvertibleTo(reflect.TypeFor[SerializedObject]()) {
+							vSerialized = val.Convert(reflect.TypeFor[SerializedObject]()).Interface().(SerializedObject)
+						} else {
+							return E.Failure(fmt.Sprintf("convert %s (%T) to %s", k, v, reflect.TypeFor[SerializedObject]()))
+						}
+					}
+					propNew := reflect.New(propType.Elem())
+					err := Deserialize(vSerialized, propNew.Interface())
+					if err.HasError() {
+						return E.Failure("set field").With(err).Subject(k)
+					}
+					prop.Set(propNew)
+				default:
+					return E.Unsupported("field", k).Extraf("type=%s", propType)
+				}
+			} else {
+				return E.Unsupported("field", k).Extraf("type=%s", propType)
+			}
+		} else {
+			return E.Failure("unknown field").With(k)
+		}
+	}
+
+	return nil
+}
+
+func DeserializeJson(j map[string]string, target any) E.NestedError {
+	data, err := E.Check(json.Marshal(j))
+	if err.HasError() {
+		return err
+	}
+	return E.From(json.Unmarshal(data, target))
+}
+
+func toLowerNoSnake(s string) string {
+	return strings.ToLower(strings.ReplaceAll(s, "_", ""))
+}
+
+type SerializedObject = map[string]any
--- a/src/utils/string.go
+++ b/src/utils/string.go
@@ -0,0 +1,11 @@
+package utils
+
+import "strings"
+
+func CommaSeperatedList(s string) []string {
+	res := strings.Split(s, ",")
+	for i, part := range res {
+		res[i] = strings.TrimSpace(part)
+	}
+	return res
+}
--- a/src/utils/testing/testing.go
+++ b/src/utils/testing/testing.go
@@ -0,0 +1,59 @@
+package utils
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+)
+
+func ExpectNoError(t *testing.T, err error) {
+	t.Helper()
+	if err != nil && !reflect.ValueOf(err).IsNil() {
+		t.Errorf("expected err=nil, got %s", err.Error())
+	}
+}
+
+func ExpectError(t *testing.T, expected error, err error) {
+	t.Helper()
+	if !errors.Is(err, expected) {
+		t.Errorf("expected err %s, got nil", expected.Error())
+	}
+}
+
+func ExpectEqual[T comparable](t *testing.T, got T, want T) {
+	t.Helper()
+	if got != want {
+		t.Errorf("expected:\n%v, got\n%v", want, got)
+	}
+}
+
+func ExpectDeepEqual[T any](t *testing.T, got T, want T) {
+	t.Helper()
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("expected:\n%v, got\n%v", want, got)
+	}
+}
+
+func ExpectTrue(t *testing.T, got bool) {
+	t.Helper()
+	if !got {
+		t.Errorf("expected true, got false")
+	}
+}
+
+func ExpectFalse(t *testing.T, got bool) {
+	t.Helper()
+	if got {
+		t.Errorf("expected false, got true")
+	}
+}
+
+func ExpectType[T any](t *testing.T, got any) T {
+	t.Helper()
+	tExpect := reflect.TypeFor[T]()
+	_, ok := got.(T)
+	if !ok {
+		t.Errorf("expected type %s, got %T", tExpect, got)
+	}
+	return got.(T)
+}
--- a/src/watcher/docker_watcher.go
+++ b/src/watcher/docker_watcher.go
@@ -5,67 +5,114 @@ import (
 	"fmt"
 	"time"

-	"github.com/docker/docker/api/types/events"
+	docker_events "github.com/docker/docker/api/types/events"
 	"github.com/docker/docker/api/types/filters"
+	"github.com/sirupsen/logrus"
 	D "github.com/yusing/go-proxy/docker"
 	E "github.com/yusing/go-proxy/error"
+	"github.com/yusing/go-proxy/watcher/events"
 )

-type DockerWatcher struct {
-	host string
+type (
+	DockerWatcher struct {
+		host   string
+		client D.Client
+		logrus.FieldLogger
+	}
+	DockerListOptions = docker_events.ListOptions
+)
+
+// https://docs.docker.com/reference/api/engine/version/v1.47/#tag/System/operation/SystemPingHead
+var (
+	DockerFilterContainer = filters.Arg("type", string(docker_events.ContainerEventType))
+	DockerFilterStart     = filters.Arg("event", string(docker_events.ActionStart))
+	DockerFilterStop      = filters.Arg("event", string(docker_events.ActionStop))
+	DockerFilterDie       = filters.Arg("event", string(docker_events.ActionDie))
+	DockerFilterKill      = filters.Arg("event", string(docker_events.ActionKill))
+	DockerFilterPause     = filters.Arg("event", string(docker_events.ActionPause))
+	DockerFilterUnpause   = filters.Arg("event", string(docker_events.ActionUnPause))
+
+	NewDockerFilter = filters.NewArgs
+
+	dockerWatcherRetryInterval = 3 * time.Second
+)
+
+func DockerrFilterContainerName(name string) filters.KeyValuePair {
+	return filters.Arg("container", name)
 }

-func NewDockerWatcher(host string) *DockerWatcher {
-	return &DockerWatcher{host: host}
+func NewDockerWatcher(host string) DockerWatcher {
+	return DockerWatcher{host: host, FieldLogger: logrus.WithField("module", "docker_watcher")}
 }

-func (w *DockerWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.NestedError) {
+func NewDockerWatcherWithClient(client D.Client) DockerWatcher {
+	return DockerWatcher{client: client, FieldLogger: logrus.WithField("module", "docker_watcher")}
+}
+
+func (w DockerWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.NestedError) {
+	return w.EventsWithOptions(ctx, optionsWatchAll)
+}
+
+func (w DockerWatcher) EventsWithOptions(ctx context.Context, options DockerListOptions) (<-chan Event, <-chan E.NestedError) {
 	eventCh := make(chan Event)
 	errCh := make(chan E.NestedError)
 	started := make(chan struct{})

+	eventsCtx, eventsCancel := context.WithCancel(ctx)
+
 	go func() {
+		defer close(eventCh)
 		defer close(errCh)

-		var cl D.Client
-		var err E.NestedError
-		for range 3 {
-			cl, err = D.ConnectClient(w.host)
-			if err.IsNil() {
-				break
+		defer func() {
+			if w.client.Connected() {
+				w.client.Close()
+			}
+		}()
+
+		if !w.client.Connected() {
+			var err E.NestedError
+			attempts := 0
+			for {
+				w.client, err = D.ConnectClient(w.host)
+				if err != nil {
+					break
+				}
+				attempts++
+				errCh <- E.FailWith(fmt.Sprintf("docker connection attempt #%d", attempts), err)
+				select {
+				case <-ctx.Done():
+					return
+				default:
+					time.Sleep(dockerWatcherRetryInterval)
+				}
 			}
-			errCh <- E.From(err)
-			time.Sleep(1 * time.Second)
-		}
-		if err.IsNotNil() {
-			errCh <- E.Failure("connecting to docker")
-			return
 		}

-		cEventCh, cErrCh := cl.Events(ctx, dwOptions)
+		cEventCh, cErrCh := w.client.Events(eventsCtx, options)
 		started <- struct{}{}

 		for {
 			select {
 			case <-ctx.Done():
-				if err := <-cErrCh; err != nil {
-					errCh <- E.From(err)
+				if err := E.From(ctx.Err()); err != nil && err.IsNot(context.Canceled) {
+					errCh <- err
 				}
 				return
 			case msg := <-cEventCh:
-				var Action Action
-				switch msg.Action {
-				case events.ActionStart:
-					Action = ActionCreated
-				case events.ActionDie:
-					Action = ActionDeleted
-				default: // NOTE: should not happen
-					Action = ActionModified
+				action, ok := events.DockerEventMap[msg.Action]
+				if !ok {
+					w.Debugf("ignored unknown docker event: %s for container %s", msg.Action, msg.Actor.Attributes["name"])
+					continue
 				}
-				eventCh <- Event{
-					ActorName: fmt.Sprintf("container %q", msg.Actor.Attributes["name"]),
-					Action:    Action,
+				event := Event{
+					Type:            events.EventTypeDocker,
+					ActorID:         msg.Actor.ID,
+					ActorAttributes: msg.Actor.Attributes, // labels
+					ActorName:       msg.Actor.Attributes["name"],
+					Action:          action,
 				}
+				eventCh <- event
 			case err := <-cErrCh:
 				if err == nil {
 					continue
@@ -75,10 +122,10 @@ func (w *DockerWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.Nest
 				case <-ctx.Done():
 					return
 				default:
-					if D.IsErrConnectionFailed(err) {
-						time.Sleep(100 * time.Millisecond)
-						cEventCh, cErrCh = cl.Events(ctx, dwOptions)
-					}
+					eventsCancel()
+					time.Sleep(dockerWatcherRetryInterval)
+					eventsCtx, eventsCancel = context.WithCancel(ctx)
+					cEventCh, cErrCh = w.client.Events(ctx, options)
 				}
 			}
 		}
@@ -88,8 +135,9 @@ func (w *DockerWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.Nest
 	return eventCh, errCh
 }

-var dwOptions = events.ListOptions{Filters: filters.NewArgs(
-	filters.Arg("type", string(events.ContainerEventType)),
-	filters.Arg("event", string(events.ActionStart)),
-	filters.Arg("event", string(events.ActionDie)), // 'stop' already triggering 'die'
+var optionsWatchAll = DockerListOptions{Filters: NewDockerFilter(
+	DockerFilterContainer,
+	DockerFilterStart,
+	DockerFilterStop,
+	DockerFilterDie,
 )}
--- a/src/watcher/event.go
+++ b/src/watcher/event.go
@@ -1,26 +0,0 @@
-package watcher
-
-import "fmt"
-
-type (
-	Event struct {
-		ActorName string
-		Action    Action
-	}
-	Action string
-)
-
-const (
-	ActionModified Action = "MODIFIED"
-	ActionCreated  Action = "CREATED"
-	ActionStarted  Action = "STARTED"
-	ActionDeleted  Action = "DELETED"
-)
-
-func (e Event) String() string {
-	return fmt.Sprintf("%s %s", e.ActorName, e.Action)
-}
-
-func (a Action) IsDelete() bool {
-	return a == ActionDeleted
-}
--- a/src/watcher/events/events.go
+++ b/src/watcher/events/events.go
@@ -0,0 +1,49 @@
+package events
+
+import (
+	"fmt"
+
+	dockerEvents "github.com/docker/docker/api/types/events"
+)
+
+type (
+	Event struct {
+		Type            EventType
+		ActorName       string
+		ActorID         string
+		ActorAttributes map[string]string
+		Action          Action
+	}
+	Action    string
+	EventType string
+)
+
+const (
+	ActionFileModified Action = "modified"
+	ActionFileCreated  Action = "created"
+	ActionFileDeleted  Action = "deleted"
+
+	ActionDockerStartUnpause Action = "start"
+	ActionDockerStopPause    Action = "stop"
+
+	EventTypeDocker EventType = "docker"
+	EventTypeFile   EventType = "file"
+)
+
+var DockerEventMap = map[dockerEvents.Action]Action{
+	dockerEvents.ActionCreate:  ActionDockerStartUnpause,
+	dockerEvents.ActionStart:   ActionDockerStartUnpause,
+	dockerEvents.ActionPause:   ActionDockerStartUnpause,
+	dockerEvents.ActionDie:     ActionDockerStopPause,
+	dockerEvents.ActionStop:    ActionDockerStopPause,
+	dockerEvents.ActionUnPause: ActionDockerStopPause,
+	dockerEvents.ActionKill:    ActionDockerStopPause,
+}
+
+func (e Event) String() string {
+	return fmt.Sprintf("%s %s", e.ActorName, e.Action)
+}
+
+func (a Action) IsDelete() bool {
+	return a == ActionFileDeleted
+}
--- a/src/watcher/file_watcher.go
+++ b/src/watcher/file_watcher.go
@@ -20,7 +20,10 @@ func NewFileWatcher(filename string) Watcher {
 }

 func (f *fileWatcher) Events(ctx context.Context) (<-chan Event, <-chan E.NestedError) {
+	if fwHelper == nil {
+		fwHelper = newFileWatcherHelper(common.ConfigBasePath)
+	}
 	return fwHelper.Add(ctx, f)
 }

-var fwHelper = newFileWatcherHelper(common.ConfigBasePath)
+var fwHelper *fileWatcherHelper
--- a/src/watcher/file_watcher_helper.go
+++ b/src/watcher/file_watcher_helper.go
@@ -9,6 +9,7 @@ import (
 	"github.com/fsnotify/fsnotify"
 	"github.com/sirupsen/logrus"
 	E "github.com/yusing/go-proxy/error"
+	"github.com/yusing/go-proxy/watcher/events"
 )

 type fileWatcherHelper struct {
@@ -80,27 +81,30 @@ func (h *fileWatcherHelper) start() {

 	for {
 		select {
-		case event, ok := <-h.w.Events:
+		case fsEvent, ok := <-h.w.Events:
 			if !ok {
 				// closed manually?
 				fsLogger.Error("channel closed")
 				return
 			}
 			// retrieve the watcher
-			w, ok := h.m[path.Base(event.Name)]
+			w, ok := h.m[path.Base(fsEvent.Name)]
 			if !ok {
 				// watcher for this file does not exist
 				continue
 			}

-			msg := Event{ActorName: w.filename}
+			msg := Event{
+				Type:      events.EventTypeFile,
+				ActorName: w.filename,
+			}
 			switch {
-			case event.Has(fsnotify.Create):
-				msg.Action = ActionCreated
-			case event.Has(fsnotify.Write):
-				msg.Action = ActionModified
-			case event.Has(fsnotify.Remove), event.Has(fsnotify.Rename):
-				msg.Action = ActionDeleted
+			case fsEvent.Has(fsnotify.Create):
+				msg.Action = events.ActionFileCreated
+			case fsEvent.Has(fsnotify.Write):
+				msg.Action = events.ActionFileModified
+			case fsEvent.Has(fsnotify.Remove), fsEvent.Has(fsnotify.Rename):
+				msg.Action = events.ActionFileDeleted
 			default: // ignore other events
 				continue
 			}
--- a/src/watcher/watcher.go
+++ b/src/watcher/watcher.go
@@ -4,8 +4,11 @@ import (
 	"context"

 	E "github.com/yusing/go-proxy/error"
+	"github.com/yusing/go-proxy/watcher/events"
 )

+type Event = events.Event
+
 type Watcher interface {
 	Events(ctx context.Context) (<-chan Event, <-chan E.NestedError)
 }
--- a/version.txt
+++ b/version.txt
@@ -1 +0,0 @@
-0.5.0-rc3
Author	SHA1	Message	Date
yusing	96bce79e4b	changed env GOPROXY__PORT to GOPROXY__ADDR, changed api server default to listen on localhost only, readme update	2024-09-22 06:06:24 +08:00
yusing	d9fd399e43	fix stuck loading in some scenerios for ls-* command line options	2024-09-22 05:01:36 +08:00
yusing	46281aa3b0	renamed ProxyEntry to RawEntry to avoid confusion with src/proxy/entry.go	2024-09-22 04:13:42 +08:00
yusing	d39b68bfd8	fixed possible resource leak	2024-09-22 04:11:02 +08:00
yusing	a11ce46028	added some docker compose examples; fixed defaults to wrong host; updated watcher behavior to retry connection every 3 secs until success or until cancelled	2024-09-22 04:00:08 +08:00
yusing	6388d9d44d	fixed outputing error in ls-config, ls-routes, etc.	2024-09-21 18:47:38 +08:00
yusing	69361aea1b	fixed host set to localhost even on remote docker, fixed one error in provider causing all routes not to load	2024-09-21 18:23:20 +08:00
yusing	26e2154c64	fixed startup crash for file provider	2024-09-21 17:22:17 +08:00
Yuzerion	a29bf880bc	Update docker.md Too sleepy...	2024-09-21 16:08:11 +08:00
Yuzerion	1f6d03bdbb	Update compose.example.yml	2024-09-21 16:07:12 +08:00
Yuzerion	4a7d898b8e	Update docker.md	2024-09-21 16:06:32 +08:00
Yuzerion	521b694aec	Update docker.md	2024-09-21 15:56:39 +08:00
yusing	a351de7441	github CI fix attempt	2024-09-21 14:32:52 +08:00
yusing	ab2dc26b76	fixing udp stream listening on wrong port	2024-09-21 14:18:29 +08:00
yusing	9a81b13b67	fixing tcp/udp error on closing	2024-09-21 13:40:20 +08:00
yusing	626bd9666b	check release	2024-09-21 12:45:56 +08:00
yusing	d7eab2ebcd	fixing idlewatcher	2024-09-21 09:42:40 +08:00
yusing	e48b9bbb0a	新增繁中README (未完成)	2024-09-19 21:16:38 +08:00
yusing	339411530b	v0.5.0-rc5: merge	2024-09-19 20:42:12 +08:00
yusing	4a2d42bfa9	v0.5.0-rc5: check release	2024-09-19 20:40:03 +08:00
Yuzerion	81da9ad83a	small fix	2024-09-18 09:10:41 +08:00
yusing	be7a766cb2	v0.5.0-rc5: added proxy.exclude label, refactored some code	2024-09-17 17:56:41 +08:00
yusing	83d1d027c6	added TZ env to docker compose example	2024-09-17 12:36:13 +08:00
yusing	21fcceb391	v0.5.0-rc4: initial support for ovh, provider generator implementation update, replaced all interface{} to any	2024-09-17 12:06:58 +08:00
yusing	82f06374f7	v0.5.0-rc4: fixing autocert issue, cache ACME registration, added ls-config option	2024-09-17 08:41:36 +08:00
yusing	04fd6543fd	README update for sonarcloud badges, simplify some test code, fixed some sonarlint issues	2024-09-17 04:51:26 +08:00
yusing	409a18df38	update default branch for setup script	2024-09-17 03:54:55 +08:00