Browser connections fail with "A server must not mask any frames that it sends to the client" #213
Description
Since upgrading from 6.2.0 to 6.4.0, WebSockets connections from the Web browser (Chrome 104.0.5112.81) stopped working. The error is A server must not mask any frames that it sends to the client.
It can be reproduced in the WsChatServer example.
6.2.0:
6.4.0:
