Is there a way I can use something like socket.io on the IC?

[peterparker]

Here an answer to the same question from @rudi that is more up-to-date:

WebSocket support

Hi @lastmjs We wrapped up the proof-of-concept that was presented in the Public Global R&D. We are just waiting on the last approvals for open-sourcing it. I will let you know, when it is available.