[lwip-devel] [bug #54076] tcp: timeout required in FIN_WAIT_2 if pcb has been closed

[Billy Bednar]

Follow-up Comment #3, bug #54076 (project lwip):

I think this already exists in tcp_slowtmr.

    /* Check if this PCB has stayed too long in FIN-WAIT-2 */
    if (pcb->state == FIN_WAIT_2) {
      /* If this PCB is in FIN_WAIT_2 because of SHUT_WR don't let it time
out. */
      if (pcb->flags & TF_RXCLOSED) {
        /* PCB was fully closed (either through close() or SHUT_RDWR):
           normal FIN-WAIT timeout handling. */
        if ((u32_t)(tcp_ticks - pcb->tmr) >
            TCP_FIN_WAIT_TIMEOUT / TCP_SLOW_INTERVAL) {
          ++pcb_remove;
          LWIP_DEBUGF(TCP_DEBUG, ("tcp_slowtmr: removing pcb stuck in
FIN-WAIT-2\n"));
        }
      }
    }


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