[mad_vill]

For all the other comments, parent is probably talking about forward proxies and to their point many forward/enterprise proxies have configurations which cause websockets to break and it is a pain to debug this if you have many enterprise customers.

[mappu]

Echoing this. At $DAYJOB some 5-10% of customers will fail to initiate a websocket connection, even over wss:// despite plain HTTPS requests working fine. This is a client-side issue with whatever outdated HTTP CONNECT implementation the enterprise has.