Channel was not being properly closed on channel timeout. Close was
issuing flush, which wait for the channel to empty its output buffer.
For a channel in timeout (or error) state, this would wait forever
and leave the channel in closing state and preventing the output
buffer from being freed.
Channel was not being properly closed on channel timeout. Close was issuing flush, which wait for the channel to empty its output buffer. For a channel in timeout (or error) state, this would wait forever and leave the channel in closing state and preventing the output buffer from being freed.