[lwip-devel] [bug #36167] tcp server crash when client closes (maximum window)

[Joel Cunningham]

Follow-up Comment #12, bug #36167 (project lwip):

> I'm running this[1] Perl test over lwip with the sockets API and it makes
the stack crash at line #118

What file?  I don't see any LWIP_ASSERT at #118 in tcp.c or tcp_in.c (I'm
looking at git master)

> It also happens the window is full at that moment. The netconn api calls
tcp_recved() for the FIN byte, which overflows the window.

Did you mean window is empty?  pcb->rcv_wnd tracks the remaining available
receive window.  The only way it could overflow is if it was empty at 0xFFFF.



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