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RTOS/DK-TM4C129X: TCP server connection got refused on multiple attempts

Arjunan Anandan
Prodigy 70 points

Part Number: DK-TM4C129X

Tool/software: TI-RTOS

Hi,

I am using the example(TCP Echo) provided in tirtos tivac-2.16.01.14 ,i am able to connect  the client  and able to send and receive messages in staticip configuration.After some time connection got disconnected and on next attempt  to connect ,its showing Connection refused by remote host in Winsock  tester.

(1.) How to Keep the Socket Alive for continuously.

(2.) Requirement is to make Server Connection open and client can connect and disconnect without resetting the TCP Server.

Please find the attached files for reference.

Thanks & Regards,

Arjunan

7181.tcpEcho.cfg

  • 0
    TI__Intellectual 1390 points

    Hi Arjunan,

    1) The example should run continuously unless an error occurs. Nothing extra needs to be done.

    There are several error conditions checked for inside tcpEcho.c. Can you see which of those your program is entering? Maybe by stepping through the code.

    If accept() fails, errno should be set. Can you check its value before your program exits?

     

    Best,

    Brandon

  • 0 in reply to Brandon_Green
    Prodigy 70 points
    Thanks Brandon for replying,
    i am able to solve the issue using infinite loop.

    while(1)
    {

    if( (sock = accept(server, (struct sockaddr *)&clientAddr, &addrlen)) < 0)
    {

    System_printf("could not open a socket to accept data\n");
    }

    while ((bytesRcvd = recv(clientfd, buffer, TCPPACKETSIZE, 0)) > 0)
    {
    bytesSent = send(clientfd, buffer, bytesRcvd, 0);
    //...
    //...
    }

    close(sock);
    }

    regards,
    Arjunan