To whom it concerns:
Around line 524 of core/tcp.c, in tcp_listen_with_backlog(struct tcp_pcb
*pcb, u8_t backlog):
LWIP_ERROR("tcp_listen: pcb already connected", pcb->state == CLOSED,
return NULL);
/* already listening? */
if (pcb->state == LISTEN) {
return pcb;
}
A pcb->state == LISTEN never makes it past the LWIP_ERROR. Put the check
for the LISTEN state above the LWIP_ERROR.
I am surprised anyone gets tcp_listen() to work at all for the raw API with
this bug.
Cheers,
Joe Gorse
C: 440-552-0730
LI: Joe Gorse <http://www.linkedin.com/pub/joe-gorse/7/12/397>
FB: jhgiv <https://www.facebook.com/jhgiv>
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