socket.io peerjs clients list

gistfile1.txt

var io = require('socket.io').listen(httpServer);
httpServer.listen(8080);                                                                     
            
io.set('log level', 1);                                                                      
var peerWebRTC = io.of('/peerWebRTC');                                                       
var PeerServer = require('peer').PeerServer;

var idIncr = 0;                                                                              
var clientpeerIds = [];
var clientData = {}; /* by clientpeerIds */
    
peerWebRTC.on('connection', function(socket){                                                
        
  socket.on('profile-image', function(profileImg){
    console.log('profile-image');
      
    socket.get("peerID", function(err, peerID){                                              
      if(err) console.error(err);                                                            
      else {
        var filename = __dirname + "/files/peerjs/profileImages/" + peerID + ".png";         
        console.log('filename: ' + filename);                                                
        console.log(profileImg.length);
        socket.broadcast.emit("newProfileImg", peerID, profileImg);                          
        console.log('did broadcast');
 }
    });

  });

  socket.on('verifyCookie', function( verifySignedCookie, scb){
    var decodedUsername = cookie.unsign(verifySignedCookie, 'secret')
    scb(decodedUsername);
    if(!decodedUsername){
      console.log("ERROR: COOKIE TAMPERING");
      initializeClients( "client" + ++idIncr );
    } else {
      initializeClients(decodedUsername);
    }
  });

  socket.on('noCookie', function(){
    initializeClients( "client" + ++idIncr )
  });

  function initializeClients(peerID){

    socket.set('peerID', peerID, function(){
      socket.emit('initializeClientPage', peerID, clientpeerIds );
      socket.broadcast.emit('clientJoined', peerID);
      clientpeerIds.push(peerID);
    });

  }

  console.log("--------------------------------------");
  console.log("new connection -socket id: " + socket.id);
  console.log("clientpeerIds: " + clientpeerIds);

  socket.on('setUsername', function(checkusername, scb){
    /* scb = socket callback */
    var arrlength = clientpeerIds.length;
    for (var i = 0; i < arrlength; i++){
      if(checkusername === clientpeerIds[i]){
        scb(false);
        return;
      }
    }
    var signedUsername = cookie.sign(checkusername, 'secret');

    scb(true, signedUsername);
    removeUser();
    socket.set('peerID', checkusername, function(){
      socket.broadcast.emit('clientJoined', checkusername);
      clientpeerIds.push(checkusername);
    });
  });


  socket.on('disconnect', function(){
    removeUser();
  });

  function removeUser(){
    socket.get("peerID", function(err, peerID){
      if(err) console.error(err);
      socket.broadcast.emit('clientQuit', peerID);
      var idx = clientpeerIds.indexOf(peerID);
      clientpeerIds.splice(idx, 1);

      console.log("--------------------------------------");
      console.log('socket ' + socket.id + ' disconnected');
      console.log("clientpeerIds: " + clientpeerIds);
    });
  }

});



var peerS = new PeerServer({port: 8090, path: '/myapp'});

peerS.on('connection', function(id){
  console.log("peerId: " + id + " has connected");
});
peerS.on('disconnect', function(id){
  console.log("peerId: " + id + " has diconnec