[lwip-devel] [bug #46696] accepts_pending not decreased when TCP_EVENT_ACCEPT returns error

[Ambroz Bizjak]

Follow-up Comment #3, bug #46696 (project lwip):

Hey,
I think there is a simple solution for this:
- In tcp_process(), decrement accepts_pending just as pcb->state is set to
ESTABLISHED (from SYN_RCVD).
- Remove the decrement of accepts_pending in tcp_accepted().

My thinking is that accepts_pending should always be equal to the number of
PCBs in SYN_RCVD state associated with the listener. So it makes sense to
decrement it at the transition SYN_RCVD->ESTABLISHED. Also consider that
tcp_pcb_purge() decrements it only when the PCB is in SYN_RCVD state.

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