[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [lwip-users] strange TCP behavior, connection stalls

From: Sergio R. Caprile
Subject: Re: [lwip-users] strange TCP behavior, connection stalls
Date: Mon, 11 Apr 2016 10:47:01 -0300
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Thunderbird/38.7.2

You should first validate the port by running a known to work application, pick one from the contrib tree. The port must not call basic (non-netconn or non-socket) lwIP functions from different threads.

You must specify which API you are using, and it is quite helpful if you post your piece of software.
You seem to be using the socket API, you are definitely using an RTOS.

Where was this capture taken ? Judging by the incorrect checksums reported by wireshark, this seems to be taken at the web server (offloading). I can't see why your server is not accepting the first syn. If the capture is actually taken at the web server, it should have accepted it. Your device is missing frames, it asks for the same sent data twice (thrice in total) in frames 19 to 23. This is common in bad ports and bad layer-2 drivers (and Wi-Fi networks...).

reply via email to

[Prev in Thread] Current Thread [Next in Thread]