This repository was archived by the owner on Apr 30, 2021. It is now read-only.
This repository was archived by the owner on Apr 30, 2021. It is now read-only.
Slack's WebSocket API requires lowercase "websocket" in the Upgrade header #65
Description
As described in a ticket for the Python Slack RTM client, although RFC 6455 says:
- An |Upgrade| header field containing the value "websocket",
treated as an ASCII case-insensitive value.
Slack has decided to be more particular. I don't know whether we should adjust this, but the RFC does use lowercase "websocket" in its examples, so it seems likely that other folks will get this wrong.