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

[Info]

Hi

I'm using lwIP (2.1.3-RC1) with the httpd web server from the apps 
directory in my embedded application. After loading a web content from 
the web server a periodic communication starts from the web browser that 
opened the website. This all works, but after a view minutes the 
periodic communication gets broken (the web server/lwIP stack itself 
does not crash). After a reload of the web site the periodic 
communication is established again for a view minutes.

In the attached Wireshark capture file I can see many frames (from the 
web browser) with the set ACK RST flags. For me it not clear why the web 
browser sends this frames and if it is the reason for the broken 
periodic communication ? Any help and maybe some explanation would be 
very welcome.

I also activated the debugging output and the internal lwIP asserts, but 
this did not help me to track down the problem. The web server does not 
support encryption.

The lwIP uses FreeRTOS with the sys_arch files found in the contrib package.

IPs used in the Wireshark capture : The web server uses 192.168.3.131 
and the client (web browser) 192.168.10.103 .

Thank you very much for any help
Roland

HTTPD_WebServer_2_1_3.pcapng
Description: application/pcapng