Getting ERR_EMPTY_RESPONSE on $.POST

Question

I have a simple social networking site with chat functionality. I have used $.post a lot in multiple pages. The code works well on all pages except message.php

Answer 1

Simplest answer would be you allow your server to be spammed to the point that it stops responding (yet still recieving new connections). If the connections are not closed(resolved) in time you will also hit limitation of concurrent browser connections to domain (which I think is really happening - browser blocking you in making those request).

You either switch to sockets, or send text to server on set interval of time. Alternatively you dont allow next post, till previous is resolved.