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RE: [lwip-users] TCP connections die out after 4 hours.

From: Muhamad Ikhwan Ismail
Subject: RE: [lwip-users] TCP connections die out after 4 hours.
Date: Tue, 15 Jul 2008 09:10:42 +0000


I have personally done an echo test that takes 6 hrs where data is being exchanged every 100ms and the connection was still fine.
I will run the test most probably again today.
Could you please provide info on which implementation of lwip are u having and info about the drivers and if u r using sockets so that
the devs could help you further.

Since it is time dependent, I think you might have a memory leak and after 3-4 hrs you ran out of memory and
hence the whole thing stopped.But its just an assumption since you didnt provide enough info. Could it be a problem with ur app code or
the other node (the server) ? Did you debug the application and check the content of the pcbs after the problem arises?

M Ikhwan Ismail
Heidelberg Germany

From: address@hidden
To: address@hidden
Date: Tue, 15 Jul 2008 11:11:10 +0530
Subject: [lwip-users] TCP connections die out after 4 hours.

I am facing a problem with the lwip stack.
On my target board five active TCP connections are which are sending data to a server like 200 bytes in 400 millisecond also the same data is sent to UDP ports also.
The configuration is working continuously for 3 - 4 hours but after that one by one all TCP connections are die out and the data on UDP port also stops.
the OS I am using is FreeRTOS and processor is ARM9.
Is anybody faced similar situation in past.... or anybody can help in this case.
Please respond...

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