TCP/IP communication with host PC

    We have a TCP/IP client/server setup with a PC as the server and a PicoComA5 as the client. For testing, the server is continuously sending messages to the PicoCom client and the client acknowledges the message with a short answer. This works well but for some reason the client program hangs after 2-3 days (after around 100,000 messages). Actually, not only the client program hangs, the whole PicoCom (Windows) locks up - nothing work, not even the COM1 communication. The only way to get the PicoCom back is to cycle the power.


    We are using a Win6CE and Visual Studio 2008.


    Any ideas what causes the hang? Our client/server programs are both quite simple and still this strange hang - seems like something is not quite right with the TCP/IP implementation on the PicoCom side. It's not, or probably not, a memory leak because we have tried allocating a lot of memory before the test starts and the hang still happens after 2-3- days, not sooner (as you would expect if it was memory caused).

    Hello,


    which kernel revision you are using? If the board realy "hangs" the Hardware Watchdog should reboot the board. So i assume a blocking from application or from a driver.

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

    1) Synch TCP/IP mode
    Kernel version ‘1.07 –build jul 2 2014’ works
    Kernel version ‘1.09 –build dec 3 2014’ hangs within 24 hours


    2) Aynch TCP/IP mode
    Kernel versions ‘1.07 –build jul 2 2014’ and ‘1.09 –build dec 3 2014’ both hang within 2-3 hours


    'Hang' means this: nothing works, no touch screen, no COM port communication, only way out is power off


    Please note: the same client/server programs running on two Win7/Win8 computers work for weeks without any problems.


    Seems to be something wrong with the TCP/IP implementation in the PicoCom kernels.