chat with particular user in node.js

Question

This is my code for private chat with selected user. It is not sending message to the selected user like private message.

server side:

   var fs = require('fs'),
    http = require('http'),

    sio = require('socket.io');




  var server = http.createServer( function(req, res) {

    if (req.url === '/index') {
        fs.readFile('./index.html', function(err, page) {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write(page);
            res.end();

        });
    }
    else if (req.url === '/karthick') {
        fs.readFile('./karthick.html', function(err, page) {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write(page);
            res.end();
        });
    }
    else if (req.url === '/raj') {
        fs.readFile('./raj.html', function(err, page) {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write(page);
            res.end();
        });
    }

else if (req.url === '/Harendra') {
        fs.readFile('./Harendra.html', function(err, page) {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write(page);
            res.end();
        });
    }
    else if (req.url === '/send') {
        fs.readFile('./sendingmsg.html', function(err, page) {
            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write(page);
            res.end();
        });
    }
    else {
            res.writeHead(301,
              {Location: '/index'}
            );
            res.end();
        }
});
server.listen(8000, function() {
  console.log('Server listening at http://192.168.1.16/8000');
});
io = sio.listen(server);
// store messages
var messages = [];

io.sockets.on('connection', function(socket){
  socket.on('chat message', function(msg){
    console.log('Received: ', msg);
    messages.push(msg);
    io.sockets.emit('chat message', msg);
  });
  messages.forEach(function(msg) {
    socket.send(msg);
  })
});

client side:sending

<!DOCTYPE html>
<html>
    <body>
        <title>send message</title>
        <ul id="messages"></ul>
        <form action="">
            <select>
                 <option id="kar"  value="karthick">karthick</option>
                 <option id="raj" value="Raj">Raj</option>
                 <option id="haren" value="Harendra">Harendra</option>
          </select><br />
             <textarea id="m"  rows="4" cols="50">

            </textarea><br/>
                <button id=btn>Send</button>
        </form>
         <script src="https://cdn.socket.io/socket.io-1.1.0.js"></script>
    <script src="http://code.jquery.com/jquery-1.11.1.js"></script>
    <script>
      var socket = io.connect('http://192.168.1.21:8000');
      $('form').submit(function(){
        socket.emit('chat message', $('#m').val());
        $('#m').val('');
        return false;
      });
      socket.on('disconnect', function() {
        $('#messages').append('<li>Disconnected</li>');
      });
     </script>
    </body>
</html>

received client:1

<!DOCTYPE html>
<html>
    <body>
        <title>Users</title>
        Welcome Harendra
        <ul id="messages"></ul>
        <script src="/socket.io/socket.io.js"></script>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
        <script>
         $(function(){
    var socket = io.connect();
    socket.on('connect', function () {
      socket.on('message', function(message) {
        $('#messages').append($('<li>').text(message));
      });
      socket.on('disconnect', function() {
        $('#messages').append('<li>Disconnected</li>');
      });
    });


  });
        </script>

    </body>
</html>

When I select user for sending private message it is not working. Please help me someone

Answer 1

You are missing some logic in your server sockets implementation.

Instead of sending the message to ALL clients with io.sockets.emit(...) you should send it to a particular room - socket.to(...).emit(...)

Please, have a look at the documentation

Here is the abstract logic:

You socket should belong to a certain room in order to receive "private" messages ( socket.join(...) )
```
 socket.join('roomName'); 
```
You should broadcast your "private" messages to a specific room instead of broadcasting them to all clients. You can do it be specifying the room ( socket.to(...) ):
```
 socket.to('roomName').emit('chat message', msg); 
```

chat with particular user in node.js

Question

1 answers

solution1
1 2015-01-06 12:35:19

chat with particular user in node.js

Question

1 answers

solution1 1 2015-01-06 12:35:19

solution1
1 2015-01-06 12:35:19