Socket.io: geting multiple messages

[pokal4u]

Hi,

I am using socket.io for chating.
mycode:
app.js:

var express = require('express');
var app = express();
var http = require( "http" ).createServer( app );
var io = require( "socket.io" )( http );
var port = process.env.PORT || '8088';
http.listen(port);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use('/', routes);
app.use('/users', users);
app.use(function(req,res,next){
req.io = io;
next();
});
module.exports = app;

index.js:

var express = require('express');
var router = express.Router();
router.get('/', function(req, res, next) {
res.render('index', { title: 'Title' });
});
router.get('/chat', function(req, res) {
// usernames which are currently connected to the chat
var usernames = {};
var numUsers = 0;
var io=req.io;
io.on('connection', function (socket) {console.log("5");
var addedUser = false;

  // when the client emits 'new message', this listens and executes
  socket.on('new message', function (data) {
    // we tell the client to execute 'new message'
    socket.broadcast.emit('new message', {
      username: socket.username,
      message: data
    });
  });

  // when the client emits 'add user', this listens and executes
  socket.on('add user', function (username) {

    // we store the username in the socket session for this client
    socket.username = username;
    // add the client's username to the global list
    //usernames[username] = username;
    ++numUsers;
    addedUser = true;
    socket.emit('login', {
      numUsers: numUsers
    });
    // echo globally (all clients) that a person has connected

    socket.broadcast.emit('user joined', {
      username: socket.username,
      numUsers: numUsers
    });
  });

  // when the client emits 'typing', we broadcast it to others
  socket.on('typing', function () {
    socket.broadcast.emit('typing', {
      username: socket.username
    });
  });

  // when the client emits 'stop typing', we broadcast it to others
  socket.on('stop typing', function () {
    socket.broadcast.emit('stop typing', {
      username: socket.username
    });
  });

  // when the user disconnects.. perform this
  socket.on('disconnect', function () {
    // remove the username from global usernames list
    if (addedUser) {
      delete usernames[socket.username];
      --numUsers;
      // echo globally that this client has left
      socket.broadcast.emit('user left', {
        username: socket.username,
        numUsers: numUsers
      });
    }
  });
});
res.render('chat', { title: 'Chat' });

});
module.exports = router;

chat.jade:

doctype html
html(lang="en")
head
meta(charset="UTF-8")
link(rel="stylesheet", href="/stylesheets/style.css")
body
ul.pages
li.chat.page
.chatArea
ul.messages
input.inputMessage(type="text", placeholder="Type here...")
li.login.page
.form
h3.title What"s your nickname?
input.usernameInput(type="text", maxlength="14")
script(src="https://code.jquery.com/jquery-1.10.2.min.js")
script(src="/javascripts/socket.io.js")
script(src="/javascripts/main.js")

When run the above script working fine, but getting multiple messages
Ex: if i refresh the page n times getting n messages

Help me.

Thanks
Pokal

[PritamUpadhyay]

use socket.removeAllListeners() at start up.

[pokal4u]

Thanks working..
I added in index.js after below line

io.on('connection', function (socket) {

is it correct place to add?

[PritamUpadhyay]

Yes.

[pokal4u]

ok thanks
How to implement 1-1 chat application?

[pokal4u]

Please help me....

[PritamUpadhyay]

What are your requirements for that?

[pokal4u]

just like gmail and facebook chat application.
I used express js , socket.io.
suggest me if any modules required for chat application.

[cdagli]

You can use socket.io rooms for private chat; http://socket.io/docs/rooms-and-namespaces/

Just create a unique room ids for each private chat instance. And join both users to that room. And "emit"s will only be received by room members instead of a broadcast.

[pokal4u]

ok ..

how many chat rooms allowed to create?

[cdagli]

Check this SO question; http://stackoverflow.com/questions/12246376/maximum-concurrently-open-rooms-in-socket-io

There is no limitation from socket.io side as fas as I know.

[pokal4u]

ok thanks i will try

[pokal4u]

HI,
I done 1-1 chat application.
is possible to get previous chat messages?

[cdagli]

You should store them into some kind of DB and your app should retrieve them. It is not the duty of socket.io.

[pokal4u]

ok thanks

And gzip the css, js and doc. was not working

i tried gzip with different modules like:
compression,compress ...etc

[dsalcedo]

Please close this question listed as 'issue'. For questions please use stackoverflow.
Code strong.

[evincedev]

Hello pokal4u,

I like your concept to make facebook like chat app in socket.io.

I also want to build one for my intranet.
Can you please give demo code for that.

Thanks in advance

[nkzawa]

Seems it can be closed now. Feel free to reopen.

[Gibigbig]

use socket.removeAllListeners() at start up.

this fixed my code, but I dont understand why.

[MasterMindNET]

use socket.removeAllListeners() at start up.

this fixed my code, but I dont understand why.

Here are my assumptions:
After you run your server, new users connect to it, but after closing a server, all connections it stays untouched, so I think that is why we need it.

I still have multiple messages of

"A new connection was made by a client."

Help me please anyone! Here is my code:

let config = require('./static/config'),
express = require('express'),
app = express(),
http = require('http').Server(app),
io = require('socket.io')(http);
....

http.listen(config.PORT, function () {
console.log('Server started at port', config.PORT);
});

http.on('connection', function(socket) {
socket.removeAllListeners();
console.log("A new connection was made by a client.");
socket.setTimeout(30 * 1000); // 30 second timeout. Change this as you see fit.
});