Fixed issue which prevented IE9 and under to pass Cookies to server duri...

...ng handshake.

This is related to this issue here: https://github.com/socketstream/socketstream/issues/364.

The previous solution introduced a new bug: If using port 8000 for example, 8000 !== "8000" will evaluate to true and that will set the port to 80 and cause xs to be true.