HTTP client proxy

gistfile1.js

var http = require('http'),
    EventEmitter = require('event').EventEmitter,
    httpProxy = require('http-proxy');

var proxyAgent = new http.Agent({ maxSockets: 3 });
proxyAgent.createConnection = function(options) {
  var clientSocket = registry.getSocket(options.servername);
  
  if(!clientSocket) {
    // Set clientSocket to a future Socket here somehow
  }
  
  return clientSocket;
}

// Create a proxy dispatcher with our custom agent
var proxy = httpProxy.createProxyServer({agent: proxyAgent, ws: true});

// Just call `proxy.web()` to proxy a web request to the target passed in the options
// also you can use `proxy.ws()` to proxy a websockets request
var server = http.createServer(function(req, res) {
  proxy.web(req, res, { target: 'http://' + req.hostname });
});

console.log("listening on port 5050")
server.listen(5050);