Greetings, I have a server application using lwIP 1.4.1. When I use a Python program to connect to my server, the server always terminates the TCP connection with a RST instead of a FIN packet. The RST appears to be negatively impacting the performance of my communications. I have attached a Wireshark capture of the traffic in the attached file lwIP141.pcapng. In this file my server is at address 192.168.0.175.
I previously implemented a server using the lwIP 1.2.0 library (about a decade ago), and did not encounter this problem. The attached file lwip120.pcapng is a Wireshark capture of the same Python program communicating with the old lwIP 1.2.0 server. In this file my server is at address 192.168.0.175. Using lwIP 1.2.0 the TCP connection terminates normally with a FIN, FIN+ACK, ACK set. Does anyone have any insight into why the RST is being issued? Is there anything I can do to eliminate this problem? I look forward to your reply. Regards, Roger W. Cover Spectral Instruments, Inc. 420 N. Bonita Ave. Tucson, AZ 85745 520-884-8821 ext. 144
lwIP141.pcapng
Description: lwIP141.pcapng
lwIP120.pcapng
Description: lwIP120.pcapng
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