C

TCP Socket Send Byte and Receive Byte

Demonstrates the Chilkat Socket ReceiveByte and SendByte method. C

#include <C_CkSocket.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocket sock;
    BOOL useTls;
    int port;
    int maxWaitMs;
    BOOL treatAsUnsignedInt;

    success = FALSE;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    sock = CkSocket_Create();

    //  --------------------------------------------------------------------
    //  This example uses the public TCP echo service at https://tcpbin.com/
    //  --------------------------------------------------------------------

    useTls = FALSE;
    port = 4242;
    maxWaitMs = 5000;
    success = CkSocket_Connect(sock,"tcpbin.com",port,useTls,maxWaitMs);
    if (success == FALSE) {
        printf("%s\n",CkSocket_lastErrorText(sock));
        CkSocket_Dispose(sock);
        return;
    }

    //  Wait a max of 2 seconds for a response..
    CkSocket_putMaxReadIdleMs(sock,2000);

    //  Send a byte.
    CkSocket_SendByte(sock,96);

    //  The tcpbin.com echo server only echoes after receiving an LF (linefeed char)
    CkSocket_SendByte(sock,10);

    //  The echo server will echo back whatever is sent to it.
    //  We should be able to read the same byte back..
    //  After successfully reading, the byte value is available in the ReceivedInt property.
    treatAsUnsignedInt = TRUE;
    success = CkSocket_ReceiveByte(sock,treatAsUnsignedInt);
    if (success == FALSE) {
        printf("%s\n",CkSocket_lastErrorText(sock));
        CkSocket_Dispose(sock);
        return;
    }

    //  Let's look at the value of the byte received.  It should be 96.
    printf("%d\n",CkSocket_getReceivedInt(sock));

    //  The echo server also echoed the LF back.
    success = CkSocket_ReceiveByte(sock,treatAsUnsignedInt);
    //  Assuming success..

    //  Should be decimal 10.
    printf("%d\n",CkSocket_getReceivedInt(sock));


    CkSocket_Dispose(sock);

    }