JM wrote:
What is the proper way to close a connection and free all resources,
namely pbufs, associated with it? In my application, I have to use
tcp_abort to end the connection. (I do indeed have to send a RST;
Winamp does the same thing with streaming audio and I'm emulating that).
I can connect to to a host and receive data fine, but when I end that
connection and initiate a different connection, my debug output
occasionally indicates I'm out of MEMP_POOL.
"Out of MEMP_POOL" can mean anything. You need to know exactly which
pool and see if it is really the pbufs you are running out of. But I'd
rather guess it's the tcp_pcb-pool: aborted pcbs are put on the
time-wait list. If you then open a new connection, you will eventually
run out of tcp_pcbs. However, that's not a fatal warning as the tcp code
then frees the oldest pcb in time-wait and uses it. You should check the
stats (or use the prin_stats function) to see which memp pool was emtpy.
Simon
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