Does nobody have the time to give me some advise where the problem could
be ?
At least to understand the main problem I need some help.
In the Wireshark capture file at line number 245 is a TCP frame from the
web browser with the [SYN] flag set. Normally the web server would
answer with [SYN, ACK]. But for some reason the web server answer only
with [ACK] (line number 246 in the capture file). And from this point on
the communication with the web server is disturbed.
Any help would really be very welcome.
Kind regards
Roland
Am 15.09.21 um 15:37 schrieb 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
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