TCP/IP remote disconnection

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pseudogeek2009

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#97675 19-Feb-2012 22:35

Hello,

I am developing a TCP/IP client and server application to communicate via the internet but I am having disconnection issues. I have tested on the LAN and the application works fine without any disconnection but the disconnection issues happens when I use it remotely. The server is an embedded platform using PIC24F and the client is a simple TCP/IP client from codeproject. I am using port 3002 and have setup my router to port forward to the IP address of the embedded platform. I have ping it from the client PC and that seems fine. I have also check if the port is open by using www.canyouseeme.org.

Any ideas?

Paul

pseudogeek2009

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#583830 20-Feb-2012 12:28

Solved.

freitasm

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#583834 20-Feb-2012 12:30

It would be good to give a brief explanation, if anyone searching for this lands on this page...

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pseudogeek2009

66 posts

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#584276 21-Feb-2012 00:00

Default keep alive timeout in the Microchip library is 30ms. Increase the timeout to resolve the issue and it is working fine.

pseudogeek2009

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#598176 21-Mar-2012 12:58

Now I am having an issue with disconnection after several hours of operation. I was wondering if that is ISP issue. I am currently using dynamic dns setup on one of the router and port forward to a static IP address setup on the server. My client sends a request every 5 minutes. After over 4 hours of running the application, the disconnection happens. Is this an ISP issue (Orcon)?

I know in real-life situation, the software will have to cope with the reconnection. Currently the embedded server copes with the disconnection by using the keep alive timers and reinitialise the TCP/IP stack.

Ragnor

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#598241 21-Mar-2012 14:47

pseudogeek2009: Now I am having an issue with disconnection after several hours of operation. I was wondering if that is ISP issue. I am currently using dynamic dns setup on one of the router and port forward to a static IP address setup on the server. My client sends a request every 5 minutes. After over 4 hours of running the application, the disconnection happens. Is this an ISP issue (Orcon)?

I know in real-life situation, the software will have to cope with the reconnection. Currently the embedded server copes with the disconnection by using the keep alive timers and reinitialise the TCP/IP stack.

Probably the best way to investigate would to be capture a log of the traffic with wireshark at the client and server ends
http://www.wireshark.org/