[lwip-devel] [bug #25629] keep-alive not working.

[Oleg Tyshev]

Follow-up Comment #3, bug #25629 (project lwip):

Sorry, Kieran

can you explain why in this code fragment
we increase announced receive window?

tcphdr->ackno = htonl(pcb->rcv_nxt);
TCPH_FLAGS_SET(tcphdr, TCP_ACK);
tcphdr->wnd = htons(pcb->rcv_ann_wnd + 1);
tcphdr->urgp = 0;

You write:
"I've also fixed the window in the packet with that change to not shrink what
we advertise by one octet. "

We send one byte in case zero window probe or keep alive probe.
Why receive window would be shrink without this "+1"?

    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?25629>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/