nodejs_tcp_proxy.js

"use strict";

const net = require('net');

// const REMOTE_ADDR = 198.178.123.109;
// const REMOTE_PORT = 6555;

const REMOTE_ADDR = 'aardmud.org';
const REMOTE_PORT = 4000;

let server = net.createServer((serverSocket)=> {
    let clientSocket = net.createConnection(REMOTE_PORT, REMOTE_ADDR, ()=> {
        clientSocket.on('data', (clientChunk)=> {
            serverSocket.write(clientChunk);
        });
    })

    serverSocket.on('data', (serverChunk)=> {
        clientSocket.write(serverChunk);
    });
});

server.listen(3000);
console.log('listening 3000 ...');