This question is more related to websockets. I have seen that they use different protocol and doesn't work behind proxies or firewalls most of the time. How do you handle this?
Using websockets relies on a proxy that doesn't pass just the headers/body, but instead sends all packets in both directions. Nginx proxies do this, Apache requires a special proxy module.
Firewalls don't typically care, since it's effectively a long lived HTTP request, unless it digs into all of the packets and filters there.
