[lwip-devel] [bug #26069] Connect to a remote IP address which is not present makes the APP hang

[Kieran Mansley]

Follow-up Comment #3, bug #26069 (project lwip):

pcb->nrtx should eventually get to TCP_SYNMAXRTX, as pcb->ntrx is increased
each time the SYN is retransmitted, so the suggested fragment should I think
deal with detecting a duff connection.  Are you saying that pcb->nrtx isn't
getting increased properly, or perhaps that it is somehow greater than
TCP_SYNMAXRTX?

If tcp_slowtmr() is removing the connection and the application still isn't
noticing (due to TCP_EVENT_CONNECTED()) not being called, that is something we
need to fix.

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