websocket: handling of PONG framesHEADorigin/masterorigin/HEADmasterfor-upstream

The auto PONG frames were inserted into the connection at the time
a PING had been decoded, irregardless if an upstream frame was just
in the middle of being assembled.

Add PONG frames only to the buffer if there is no frame currently
assemebled and, if it is, set the control frame aside. This control
frame is then added on the first opportunity of a "clean" send buffer.

There is only a single control frame set aside at a time. This means
a double PING will, when the PONG cannot be sent right away, only
send the last PONG.

I imagine this is fine. We want to prevent the endless buffering of
PONG frames on a connection where the server sends but does no receives.

Reported-by: Calvin Ruocco
Fixes #16706
Closes #18479

0 files changed, 0 insertions, 0 deletions