I am using socket.io
Like when there is normal http request we get to see LOGS in firebug
But in socket.io i am not able to see LOGS in firebug
Is there any way to see this logs Or I am missing something ?
I don't know about firebug (there seems to be an extension) but Chrome (apparently) supports this. You could also try / resort to tools like Wireshark and/or Fiddler.
Key here is that socket.io is basically (usually) just websockets.