WebSockets over a 3G connection

Question

I\'ve been playing with Socket.io, node.js and WebSockets, all of which I can get working fine over a wifi connection.

However, when I test out a WebSocket-enabled a

Answer 1

As Willy Tarreau says, it's broken transparent proxies used by the mobile operators. I'm sure it's not exclusive to them either (corporate company firewalls for example). You can get around this by using a different port number (on the mobile operators at least). Something other than port 80. Using SSL might also work, but I have not tried it yet.

Then you will run into problems with folk behind firewalls blocking everything outside ports 80 & 443.

Write your websockets app to flip between port 80, and some other port on each connection attempt, and have your host listen on those two ports. Then you have a good chance of connecting to the server. Use iptables port REDIRECT if your using linux to listen to two ports simultaneously.