Phillip Webb 84110a22bc Don't change case of 'Sec-WebSocket-Key'
Polish commit 5ca687c9a6b5 had an accidental side-effect of changing
the 'Sec-WebSocket-Key' header value to lowercase. This breaks
connections since the value needs to be echoed unchanged in the
"Sec-WebSocket-Accept" header.

Fixes gh-27147
2021-07-08 11:29:29 -07:00
..