Socket.IO TypeError: Cannot read property 'emit' of undefined

Question

I wrote the following code for chat client to client(client1 to server server to client2) but I am getting an error:

Missing error handler on socket. T

Answer 1

You've binded Your app to 3000-th port, and set socket.io to work with http module that listens on 3000.

So You've to change on clientside this:

var socket = io.connect('http://localhost');

to this:

var socket = io.connect('http://localhost:3000');

or just:

var socket = io.connect();

also from Your code:

users[data.uid]=data.uid;
users[data.uname] =data.uname;

I don't see any logic here :) Why not to keep it like:

users[data.uid] = {uid: data.uid, uname: data.uname}
sockets[socket.id] = socket;
if(!users[data.uid].sockets) {
  users[data.uid].sockets = [];
}
users[data.uid].sockets.push(socket);