Simple Nodejs Http/Https Proxy Server

最新推荐文章于 2024-09-03 12:30:40 发布

转载最新推荐文章于 2024-09-03 12:30:40 发布 · 141 阅读

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原文链接：https://my.oschina.net/airxiechao/blog/1557802

文章标签：

#python

本文介绍了一个简单的HTTP/HTTPS代理服务器实现方案。该代理服务器使用Node.js搭建，通过http-proxy模块来处理HTTP请求，并利用net模块处理HTTPS连接。文章详细展示了如何创建HTTP代理服务器并监听客户端连接，同时处理HTTP和HTTPS请求。

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/**
* http/https proxy server
*
* dependencies: 
*   npm install http-proxy --save
*/
var httpProxy = require("http-proxy");
var http = require("http");
var url = require("url");
var net = require('net');

var server = http.createServer(function (req, res) {
  var urlObj = url.parse(req.url);
  var target = urlObj.protocol + "//" + urlObj.host;

  //console.log("Proxy HTTP request for:", target);

  var proxy = httpProxy.createProxyServer({});
  proxy.on("error", function (err, req, res) {
    //console.log("proxy error", err);
    res.end();
  });

  proxy.web(req, res, {target: target});
}).listen(7007);  //this is the port your clients will connect to

var regex_hostport = /^([^:]+)(:([0-9]+))?$/;

var getHostPortFromString = function (hostString, defaultPort) {
  var host = hostString;
  var port = defaultPort;

  var result = regex_hostport.exec(hostString);
  if (result != null) {
    host = result[1];
    if (result[2] != null) {
      port = result[3];
    }
  }

  return ( [host, port] );
};

server.addListener('connect', function (req, socket, bodyhead) {
  var hostPort = getHostPortFromString(req.url, 443);
  var hostDomain = hostPort[0];
  var port = parseInt(hostPort[1]);
  //console.log("Proxying HTTPS request for:", hostDomain, port);

  var proxySocket = new net.Socket();
  proxySocket.connect(port, hostDomain, function () {
      proxySocket.write(bodyhead);
      socket.write("HTTP/" + req.httpVersion + " 200 Connection established\r\n\r\n");
    }
  );

  proxySocket.on('data', function (chunk) {
    socket.write(chunk);
  });

  proxySocket.on('end', function () {
    socket.end();
  });

  proxySocket.on('error', function () {
    socket.write("HTTP/" + req.httpVersion + " 500 Connection error\r\n\r\n");
    socket.end();
  });

  socket.on('data', function (chunk) {
    proxySocket.write(chunk);
  });

  socket.on('end', function () {
    proxySocket.end();
  });

  socket.on('error', function () {
    proxySocket.end();
  });

});

转载于:https://my.oschina.net/airxiechao/blog/1557802