node-dnsproxy

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A simple DNS proxy server for Node.js

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node-dnsproxy
==============

A simple DNS proxy server for Node.js  
一个简单的 Node.js DNS 代理服务器

## Installation 安装

``` shell
npm install dnsproxy               # install from npm
sudo dnsproxy -a a.com:127.0.0.1 & # start dns proxy server
dig @localhost a.com               # test the server, return 127.0.0.1
```

## Usage 使用

``` text
Usage: dnsproxy [-?hv] [-b address] [-p port] [-c true|false] [-a domain1:ip1 [domain2:ip2 [...]]] [-f filename]

Options:
  -?,-h         : this help
  -v            : show version and exit
  -b address    : set bind address
  -p port       : set bind port(default: 53)
  -c true|false : enable/disable cache
  -a domain:ip  : add one or more DNS recode
  -f filename   : load options from file
```

## Pan-analytic 泛解析
``` shell
sudo dnsproxy -a "*.a.com:127.0.0.1" "*.b.a.com:127.0.0.2" "*:127.0.0.3" &
dig @localhost xx.a.com          # return 127.0.0.1
dig @localhost xx.b.a.com        # return 127.0.0.2
dig @localhost any.other.domain  # return 127.0.0.3
```

## Who am I 我是谁
When "ip" configuration is "localhost", node-dnsproxy returns the requesting host IP address  
当"ip"配置为"localhost"时，node-dnsproxy 返回请求主机的ip地址   
When "ip" configuration is "proxyhost", node-dnsproxy returns the binding IP address of the server   
当"ip"配置为"proxyhost"时，node-dnsproxy 返回服务器绑定的ip地址  
``` shell
# start server on 192.168.1.1
sudo dnsproxy -a who.am.i:localhost who.are.you:proxyhost &

# run on 192.168.1.2
dig @192.168.1.1 who.am.i    # return 192.168.1.2
dig @192.168.1.1 who.are.you # return 192.168.1.1

# run on 192.168.1.3
dig @192.168.1.1 who.am.i   # return 192.168.1.3
dig @192.168.1.1 who.are.you # return 192.168.1.1
```

node-dnsproxy

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