(Unicode C) Bind and Listen on a Randomly Selected Unused Port

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

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#include <C_CkSocketW.h>

void ChilkatSample(void)
    {
    HCkSocketW listenSocket;
    BOOL success;
    int listenPort;

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

    listenSocket = CkSocketW_Create();

    // Pass a value of 0 for the port number to randomly select
    // an unused port.
    // (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
    success = CkSocketW_BindAndListen(listenSocket,5555,25);
    if (success != TRUE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(listenSocket));
        CkSocketW_Dispose(listenSocket);
        return;
    }

    // Find out what port was chosen.
    // Note: The ListenPort propety was added in Chilkat v9.5.0.59
    listenPort = CkSocketW_getListenPort(listenSocket);
    wprintf(L"Chosen listen port = %d\n",listenPort);


    CkSocketW_Dispose(listenSocket);

    }