var http = require('http');
var socketio = require('socket.io');
const debug = require('debug');
module.exports = createServer;

if (require.main === module) {
  const server = createServer();
  var PORT = 9091;
  server.listen(PORT, function() {
    console.log('Socket.io listening on %s', PORT);
  });
}

function createServer() {
  var server = http.createServer(handler);
  var io = socketio(server);

  var MESSAGE_COUNT = 0;
  var CONNECTION_COUNT = 0;
  var PRINT_NS_CONNECTIONS = false;
  var CONNECTIONS = {
    nsp1: {connections: 0, messages: 0},
    nsp2: {connections: 0, messages: 0}
  };

  io.of('/nsp1').on('connect', function connection(ws){
    PRINT_NS_CONNECTIONS = true;
    CONNECTIONS.nsp1.connections++;
    debug('+ Socket.io new connection in /nsp1');
    ws.on('echo', function incoming(message){
      CONNECTIONS.nsp1.messages++;
      debug('Socket.io /nsp1 echoing message: %s', message);
      ws.emit('echoed:nsp1', message);
    });
  });

  io.of('/nsp2').on('connect', function connection(ws){
    PRINT_NS_CONNECTIONS = true;
    CONNECTIONS.nsp2.connections++;
    debug('+ Socket.io new connection in /nsp2');
    ws.on('echo', function incoming(message){
      CONNECTIONS.nsp2.messages++;
      debug('Socket.io /nsp2 echoing message: %s', message);
      ws.emit('echoed:nsp2', message);
    });
  });



  io.on('connect', function connection(ws) {
    CONNECTION_COUNT++;
    debug('+ Socket.io connection');

    setTimeout(function() {
      ws.emit('hello', 'whatever');
    }, 500);

    ws.on('echo', function incoming(message) {
      MESSAGE_COUNT++;
      debug('Socket.io echoing message: %s', message);
      ws.emit('echoed', message);
    });
  });

  if (require.main === module) {
    setInterval(function() {
      console.log(new Date());
      console.log('CONNECTION_COUNT [socketio] = %s', CONNECTION_COUNT);
      console.log('MESSAGE_COUNT    [socketio] = %s', MESSAGE_COUNT + CONNECTIONS.nsp1.messages + CONNECTIONS.nsp2.messages);
      if(PRINT_NS_CONNECTIONS) {
        console.log('CONNECTIONS      [socketio] = %s', JSON.stringify(CONNECTIONS));
      }
    }, 5 * 1000);
  }

  function handler(req, res) {
    res.writeHead(404);
    res.end('No http pages here');
  }


  return server;
}

@@ -1570,16 +1570,20 @@
 (message
+, cb
 ) %7B%0A    
@@ -1597,24 +1597,98 @@
 GE_COUNT++;%0A
+      if (message === 'ping') %7B%0A        cb(%22pong%22, %7Banswer: 42%7D);%0A      %7D%0A
       debug(

add sample ack data in default socketio namespace