转发 DNS 查询请求

本示例演示如何通过简单配置 UDP 类型的代理来实现 DNS 查询请求的转发。

DNS 查询请求通常使用 UDP 协议，而 frp 支持对内网 UDP 服务的穿透，配置方式与 TCP 类似。

步骤

配置 frps.toml

在 frps.toml 文件中添加以下内容：
```
bindPort = 7000
    
```

配置 frpc.toml

在 frpc.toml 文件中添加以下内容：

serverAddr = "x.x.x.x"
    serverPort = 7000
    
    [[proxies]]
    name = "dns"
    type = "udp"
    localIP = "8.8.8.8"
    localPort = 53
    remotePort = 6000

请注意，这里示例中反代了 Google 的 DNS 查询服务器的地址，仅用于测试 UDP 代理，并没有实际意义。

启动 frps 和 frpc

分别启动 frps 和 frpc。
测试 DNS 查询请求

使用以下命令通过 dig 工具测试 UDP 包转发是否成功，预期会返回 www.baidu.com 域名的解析结果：
```
dig @x.x.x.x -p 6000 www.baidu.com
    
```

最后修改 November 15, 2023: fix 404 (#71) (626ce4d)

Forward DNS query request

This example demonstrates how to implement a simple Configuration UDP type Agent Forwarding DNS query requests.

DNS query requests typically use UDP protocol, while frp supports UDP for internal networks The penetration of services and the configuration method are similar to TCP.

Steps

Configuration frps.toml

Add the following content to the frps.toml file:
```
bindPort = 7000
  
```
Configuration frpc.toml

Add the following content to the frps.toml file:
```
serverAddr = "x.x.x.x"
  serverPort = 7000
  
  [[proxies]]
  name = "dns"
  type = "udp"
  localIP = "8.8.8.8"
  localPort = 53
  remotePort = 6000
  
```
Please note that the example here represents Google's DNS in reverse Querying the server's address is only for testing UDP agents and has no practical significance.
Start FRPS and FRPC

Start FRPS and FRPC separately
Test DNS query requests

Use the following command to test UDP using thedigtool Whether the packet forwarding was successful, expected to return www.baidu. comDomain name resolution result:
```
dig @x.x.x.x -p 6000 www.baidu.com
  
```

Last modified November 15, 2023: fix 404 (#71) (626ce4d)