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doc: new features
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79
README.md
79
README.md
@ -17,10 +17,14 @@ frp is a fast reverse proxy to help you expose a local server behind a NAT or fi
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* [Communicate with your computer in LAN by SSH](#communicate-with-your-computer-in-lan-by-ssh)
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* [Visit your web service in LAN by specific domain](#visit-your-web-service-in-lan-by-specific-domain)
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* [Features](#features)
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* [Dashboard](#dashboard)
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* [Authentication](#authentication)
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* [Encryption and Compression](#encryption-and-compression)
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* [Reload configures without frps stopped](#reload-configures-without-frps-stopped)
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* [Privilege Mode](#privilege-mode)
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* [Port White List](#port-white-list)
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* [Connection Pool](#connection-pool)
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* [Rewriting the Host Header](#rewriting-the-host-header)
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* [Development Plan](#development-plan)
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* [Contributing](#contributing)
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* [Contributors](#contributors)
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@ -136,6 +140,21 @@ Howerver, we can expose a http or https service using frp.
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## Features
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### Dashboard
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Check frp's status and proxies's statistics information by Dashboard.
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Configure a port for dashboard to enable this feature:
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```ini
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[common]
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dashboard_port = 7500
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```
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Then visit `http://[server_addr]:7500` to see dashboard.
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### Authentication
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`auth_token` is used in frps.ini for authentication when frpc login in and you should configure it for each proxy.
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@ -237,18 +256,70 @@ All proxies's configures are set in frpc.ini when privilege mode is enabled.
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`ssh -oPort=6000 test@x.x.x.x`
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#### Port White List
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`privilege_allow_ports` in frps.ini is used for preventing abuse of ports in privilege mode:
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```ini
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# frps.ini
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[common]
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privilege_mode = true
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privilege_token = 1234
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privilege_allow_ports = 2000-3000,3001,3003,4000-50000
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```
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`privilege_allow_ports` consists of a specific port or a range of ports divided by ','.
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### Connection Pool
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By default, frps send message to frpc for create a new connection to backward service when getting an user request.If a proxy's connection pool is enabled, there will be a specified number of connections pre-established.
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This feature is fit for a large number of short connections.
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1. Configure the limit of pool count each proxy can use in frps.ini:
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```ini
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# frps.ini
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[common]
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max_pool_count = 50
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```
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2. Enable and specify the number of connection pool:
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```ini
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# frpc.ini
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[ssh]
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type = tcp
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local_port = 22
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pool_count = 10
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```
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### Rewriting the Host Header
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When forwarding to a local port, frp does not modify the tunneled HTTP requests at all, they are copied to your server byte-for-byte as they are received. Some application servers use the Host header for determining which development site to display. For this reason, frp can rewrite your requests with a modified Host header. Use the `host_header_rewrite` switch to rewrite incoming HTTP requests.
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```ini
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# frpc.ini
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[web]
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privilege_mode = true
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type = http
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local_port = 80
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custom_domains = test.yourdomain.com
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host_header_rewrite = dev.yourdomain.com
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```
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If `host_header_rewrite` is specified, the Host header will be rewritten to match the hostname portion of the forwarding address.
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## Development Plan
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* Dashboard page.
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* Statistics and prestentation of traffic and connection info, etc.
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* Support udp protocol.
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* Connection pool.
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* White list for opening specific ports in privilege mode.
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* Support wildcard domain name.
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* Url router.
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* Load balance to different service in frpc.
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* Debug mode for frpc, prestent proxy status in terminal.
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* Inspect all http requests/responses that are transmitted over the tunnel.
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* Frpc can directly be a webserver for static files.
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* Full control mode, dynamically modify frpc's configure with dashboard in frps.
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* P2p communicate by make udp hole to penetrate NAT.
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## Contributing
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81
README_zh.md
81
README_zh.md
@ -15,10 +15,14 @@ frp 是一个高性能的反向代理应用，可以帮助您轻松地进行内
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* [通过 ssh 访问公司内网机器](#通过-ssh-访问公司内网机器)
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* [通过指定域名访问部署于内网的 web 服务](#通过指定域名访问部署于内网的-web-服务)
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* [功能说明](#功能说明)
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* [Dashboard](#dashboard)
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* [身份验证](#身份验证)
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* [加密与压缩](#加密与压缩)
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* [服务器端热加载配置文件](#服务器端热加载配置文件)
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* [特权模式](#特权模式)
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* [端口白名单](#端口白名单)
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* [连接池](#连接池)
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* [修改 Host Header](#修改-host-header)
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* [开发计划](#开发计划)
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* [贡献代码](#贡献代码)
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* [贡献者](#贡献者)
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@ -133,6 +137,21 @@ frp 目前正在前期开发阶段，master 分支用于发布稳定版本，dev
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## 功能说明
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### Dashboard
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通过浏览器查看 frp 的状态以及代理统计信息展示。
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需要在 frps.ini 中指定 dashboard 服务使用的端口，即可开启此功能：
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```ini
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[common]
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dashboard_port = 7500
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```
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打开浏览器通过 `http://[server_addr]:7500` 访问 dashboard 界面。
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### 身份验证
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出于安全性的考虑，服务器端可以在 frps.ini 中为每一个代理设置一个 auth_token 用于对客户端连接进行身份验证，例如上文中的 [ssh] 和 [web] 两个代理的 auth_token 都为 123。
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@ -242,20 +261,72 @@ reload 命令仅能用于修改代理的配置内容，[common] 内的公共配
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`ssh -oPort=6000 test@x.x.x.x`
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#### 端口白名单
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启用特权模式后为了防止端口被滥用，可以手动指定允许哪些端口被使用，在 frps.ini 中通过 privilege_allow_ports 来指定：
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```ini
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# frps.ini
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[common]
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privilege_mode = true
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privilege_token = 1234
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privilege_allow_ports = 2000-3000,3001,3003,4000-50000
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```
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privilege_allow_ports 可以配置允许使用的某个指定端口或者是一个范围内的所有端口，以 `,` 分隔，指定的范围以 `-` 分隔。
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### 连接池
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默认情况下，当用户请求建立连接后，frps 才会请求 frpc 主动与后端服务建立一个连接。当为指定的代理启用连接池后，frp 会预先和后端服务建立起指定数量的连接，每次接收到用户请求后，会从连接池中取出一个连接和用户连接关联起来，避免了等待与后端服务建立连接以及 frpc 和 frps 之间传递控制信息的时间。
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这一功能比较适合有大量短连接请求时开启。
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1. 首先可以在 frps.ini 中设置每个代理可以创建的连接池上限，避免大量资源占用，默认为 100，客户端设置超过此配置后会被调整到当前值：
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```ini
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# frps.ini
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[common]
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max_pool_count = 50
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```
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2. 在 frpc.ini 中为指定代理启用连接池，指定预创建连接的数量：
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```ini
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# frpc.ini
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[ssh]
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type = tcp
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local_port = 22
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pool_count = 10
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```
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### 修改 Host Header
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通常情况下 frp 不会修改转发的任何数据。但有一些后端服务会根据 http 请求 header 中的 host 字段来展现不同的网站，例如 nginx 的虚拟主机服务，启用 host-header 的修改功能可以动态修改 http 请求中的 host 字段。该功能仅限于 http 类型的代理。
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```ini
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# frpc.ini
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[web]
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privilege_mode = true
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type = http
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local_port = 80
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custom_domains = test.yourdomain.com
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host_header_rewrite = dev.yourdomain.com
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```
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原来 http 请求中的 host 字段 `test.yourdomain.com` 转发到后端服务时会被替换为 `dev.yourdomain.com`。
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## 开发计划
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计划在后续版本中加入的功能与优化，排名不分先后，如果有其他功能建议欢迎在 [issues](https://github.com/fatedier/frp/issues) 中反馈。
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* Dashboard 界面。
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* 流量，连接数等代理信息统计与展示。
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* udp 协议支持。
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* 针对短连接的连接池优化。
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* 特权模式支持端口白名单。
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* 支持 udp 协议。
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* 支持泛域名。
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* 支持 url 路由转发。
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* frpc 支持负载均衡到后端不同服务。
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* frpc debug 模式，控制台显示代理状态，类似 ngrok 启动后的界面。
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* frpc http 请求及响应信息展示。
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* frpc 支持直接作为 webserver 访问指定静态页面。
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* frpc 完全控制模式，通过 dashboard 对 frpc 进行在线操作。
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* 支持 udp 打洞的方式，提供两边内网机器直接通信，流量不经过服务器转发。
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## 贡献代码
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doc/pic/dashboard.png
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