Node.js的HTTP代理：node-http-proxy

node-http-proxy是一個用于Node.js的HTTP可編程代理庫，支持 websockets。它是適用于實現例如代理服務器和負載均衡這樣的組件。

var http = require('http'),
    httpProxy = require('http-proxy');
//
// Create your proxy server and set the target in the options.
//
httpProxy.createProxyServer({target:'http://localhost:9000'}).listen(8000);

//
// Create your target server
//
http.createServer(function (req, res) {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.write('request successfully proxied!' + '\n' + JSON.stringify(req.headers, true, 2));
  res.end();
}).listen(9000);

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