Port no. For Web socket when using stormpath

so I have a node. js Web application built using express.on this app I pass custom data to the node server using socket.io and it's then supposed to save in a the associated user account. When I was testing this locally it worked fine but since I've launched it the socket is no longer working. I think I may be using the wrong port number for the socket or else am I just doing this completely wrong?? Thank you in advance