Peter Sprenger <[email protected]> wrote: > The lwIP 1.4.0 problem is (I am using raw API), that lwIP gets a > [FIN,ACK] from the other side (Firefox), but instead of doing a > tcp_sent callback, it resubmits 3 times the packet that was already > acked in the [FIN,ACK]. This leads to a hanging half-closed situation. > Only after some minutes the Firefox on the PC will close the > connection. Do you know if this has been fixed?
Stupid question, but are you sure the FIN|ACK datagram actually reaches lwIP tcpip thread? You may be out of MEMP_NUM_TCPIP_MSG_INPKT. I ran into this a few times with similar symptoms - lwIP would retransmit data that looks ACKed if you only check the tcpdump trace. -uwe _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
