[lwip-users] Browser finishes every HTTP POST request with a ACK RST, why ?

[Roland Winistörfer]

Hi

I'm using lwIP 2.13 with the httpd web server found in the contrib part 
of the lwIP. Now i see some problem with POST requests on some Windows 
10 clients. The PC seems to close the connection after each POST with a 
RST,ACK (please see the Wireshark logging pc1_not_working.pcapng in the 
the attachment).
It seems that not all Windows PC have this problem and the communication 
works like expected (please see the Wireshark logging pc2_working.pcapng 
in the the attachment). And it is not related to any kind of browser, it 
seems really only related to different PCs (with Windows OS).

The lwIP implementation uses FreeRTOS and all other services (TFTP, 
Socket server) are working without any problems.

Does someone have an idea what the problem could be ? Any suggestion 
would be very helpful.

Kind regards,
Roland

post_request_rst_flag_on_some_pcs.zip
Description: Zip archive