(Unicode C) TCP Socket Send Byte and Receive Byte

Demonstrates the Chilkat Socket ReceiveByte and SendByte method.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkSocketW.h>

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

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

    sock = CkSocketW_Create();

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

    useTls = FALSE;
    port = 4242;
    maxWaitMs = 5000;
    success = CkSocketW_Connect(sock,L"tcpbin.com",port,useTls,maxWaitMs);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(sock));
        CkSocketW_Dispose(sock);
        return;
    }

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

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

    // The tcpbin.com echo server only echoes after receiving an LF (linefeed char)
    CkSocketW_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 = CkSocketW_ReceiveByte(sock,treatAsUnsignedInt);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(sock));
        CkSocketW_Dispose(sock);
        return;
    }

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

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

    // Should be decimal 10.
    wprintf(L"%d\n",CkSocketW_getReceivedInt(sock));


    CkSocketW_Dispose(sock);

    }