Error while sending ping

[rideg]

I was trying to send periodic ping messages from my server to a web client and it fails at the very first ping with the following error:

failed to ping: WebSocket closed: received header with unexpected rsv bits set: true:false:false

It seems the library does not allow the RSV1 bit for control messages here.

However both ping and pong might have payload accoring to the RFC:

A Ping frame MAY include "Application data"

and

A Pong frame sent in response to a Ping frame must have identical
"Application data" as found in the message body of the Ping frame
being replied to.

So I assume compression should make sense for them too. I tried it with the latest dev version, with multiple browsers and the issues persisted.

[rideg]

I did some more investigation and it seems somehow the browser sends an inappropriate message before sending the PONG. it might be related the proxy configuration in my system.

Closing the issue.