I'm experimenting on an app that is running with nodejs, express and socket.io

Server Side:

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

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

    socket.on('send_stuff', function(stuff){

        io.emit('log_stuff',newStuff);

    });

});

http.listen(54123, function(){
    console.log('listening on *:54123');
});

Client Side:

var socket = io.connect(':12345');
socket.emit('send_stuff',stuff);

My question is How do I get the details of the client (ip,user-agent,etc.) that executed socket.emit('send_stuff',stuff)?

I want to pass it to the newStuff variable.

socket.on('send_stuff', function(stuff){}); in this line stuff only returns the value that was send by client emit().

Any ideas how to do this?

I'm experimenting on an app that is running with nodejs, express and socket.io

Server Side:

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

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

    socket.on('send_stuff', function(stuff){

        io.emit('log_stuff',newStuff);

    });

});

http.listen(54123, function(){
    console.log('listening on *:54123');
});

Client Side:

var socket = io.connect('http://example.:12345');
socket.emit('send_stuff',stuff);

My question is How do I get the details of the client (ip,user-agent,etc.) that executed socket.emit('send_stuff',stuff)?

I want to pass it to the newStuff variable.

socket.on('send_stuff', function(stuff){}); in this line stuff only returns the value that was send by client emit().

Any ideas how to do this?

• javascript
• node.js
• sockets
• express
• socket.io

2 Answers 2

You can get client's ip and user-agent in connection event.

io.on('connection', function(socket){
  console.log("ip: "+socket.request.connection.remoteAddress);
  console.log("user-agent: "+socket.request.headers['user-agent']);
})

Documentation can give you some hints http://socket.io/docs/server-api/

This worked for me:

io.on('connection', function(socket) {
    var userAgent = socket.handshake.headers["user-agent"];
    console.log("User-Agent: " + userAgent);
});