Handshake issues with socket.io v1.x

[sheepcloner]

Hi,
Thank you for this tutorial. It is one of a kind. It seems that Socket.io v1.x changed the handshake. It is no longer the way your doing it, rather GET http[s]://host:port/socket.io/?transport=polling
This returns a file for some reason, let me clarify, when I look at the response header, I see application/octet-stream for the response type. And when I try it from the browser, it serves a file :(
You can see more on handshake details here: http://stackoverflow.com/a/25289378

This obviously breaks your code. I have been trying with different workarounds for over 6 hours and no luck.

Would you be able to take a look and suggest a workaround? Any help is appreciated