Ok this is either my code, socket.io or China. So I wrote DApp for my crypto project but for some reason our Chinese users have problems using it... So i dig through our code for HOURS! and finally resort to making an AJAX call from the client to a hideous PHP script for logging and what do i find?

For some reason the WebSocket cannot connect. I haven't mapped this so it's only conjecture but I think the GFW is blocking my users connections? (Also using a VPN seems to fix it)

Anyone else had this issue?