Quick and small tcp proxy written in nodejs. Opens a socket and listens for incoming connections. For every new incoming connection, it will open a connection to the proxied host, and send whatever it gets from either side to the other.

generic_proxy.js

#!/usr/bin/env node

var port_to = 6379;
var port_from = 63790;
var net = require('net');

var server = net.createServer(function(clientSocket) {
  var targetSocket = net.connect({port: port_to});
  targetSocket.on('data', function(data) {
    clientSocket.write(data);
  });
  clientSocket.on('data', function(data) {
    targetSocket.write(data);
  })
});
server.listen(port_from);