Connection check

Run this from the network that is not working. It asks the browser which routes it can build, using the same servers a real session uses.

…Signalling socket a WebSocket held open; if blocked, plain HTTPS is used instead

…This machine local addresses — always present

…STUN, over UDP finds your public address; needs UDP out

…Relay, over UDP port 3478/udp

…Relay, over TCP port 3478/tcp

…Relay, over TLS port 443 — looks like ordinary HTTPS, gets through most firewalls

Checking…

Gathering for up to 15 seconds.