[Libwebsockets] question about multi-protocols in libwebsockets

[Felix Zhang]

Hi Andy,

Hope you are doing well.
I have one question about how to support multiple subprotocol in on a
websocket connection.
for example,
client sends "Sec-WebSocket-Protocol: protocol-a, protocol-b, protocol-c"
and server selects only "protocol-a" and "protocol-c" and the response
like" Sec-WebSocket-Protocol: protocol-a, protocol-c ".

Is this a common case? and do we support this case today?
Thanks in advance.

sincerely,
Felix
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