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

[Kieran Mansley]

Follow-up Comment #9, bug #26069 (project lwip):

It will get there once pcb->ntrx increases to TCP_SYNMAXRTX.  Note this can
take some time to happen, as retransmissions back off exponentially.  It may
be that you're just not waiting long enough, and that setting TCP_SYNMAXRTX to
a smaller value would help.

The only question on this bug is whether TCP_EVENT_CONNECTED should be called
when the connection fails, or whether TCP_EVENT_ERR should be called instead. 
I'm inclined to stick with TCP_EVENT_ERR as that is the existing behaviour and
changing it to TCP_EVENT_CONNECTED might cause confusion for other users of
the event API.

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