Running a "full-featured" REPL using a net.Server and net.Socket

repl-client.js

var net = require('net')

var sock = net.connect(1337)

process.stdin.pipe(sock)
sock.pipe(process.stdout)

sock.on('connect', function () {
  process.stdin.resume();
  process.stdin.setRawMode(true)
})

sock.on('close', function done () {
  process.stdin.setRawMode(false)
  process.stdin.pause()
  sock.removeListener('close', done)
})

process.stdin.on('end', function () {
  sock.destroy()
  console.log()
})

process.stdin.on('data', function (b) {
  if (b.length === 1 && b[0] === 4) {
    process.stdin.emit('end')
  }
})

repl-server.js

var repl = require('repl')
var net = require('net')

net.createServer(function (socket) {
  var r = repl.start({
      prompt: 'socket '+socket.remoteAddress+':'+socket.remotePort+'> '
    , input: socket
    , output: socket
    , terminal: true
    , useGlobal: false
  })
  r.on('exit', function () {
    socket.end()
  })
  r.context.socket = socket
}).listen(1337)

Looks like this stopped working with 0.10.0, running the client results in the following error.

_stream_readable.js:683
throw new Error('Cannot switch to old mode now.');

I'm curious, too -- I'd like a remote REPL participant to be able to see the results of whatever they do, in their own REPL, instead of having that output "leak" back into the terminal where the program is running.

To @qzaidi : http://nodejs.org/api/stream.html#stream_compatibility_with_older_node_versions

For Node 0.10.x, please see my revision: https://gist.github.com/jakwings/7772580

var socket = require('engine.io-client');
console.log(socket.remoteAddress);

i am not getting remote addeess and it gives undefined

req.headers['x-forwarded-for'] it gives local ip address ...

i want remote ip address

how to start the client and server in this application?

i tried node repl-server.js it is giving me an error
module.js:538
throw err;
^

Error: Cannot find module 'C:\D Drive\Learning\repl-server.js'
at Function.Module._resolveFilename (module.js:536:15)
at Function.Module._load (module.js:466:25)
at Function.Module.runMain (module.js:676:10)
at startup (bootstrap_node.js:187:16)
at bootstrap_node.js:608:3