Unicode C

Get the LastErrorText for an Asynchronous Method Call

See more Async Examples

Demonstrates how to get the LastErrorText information for a Chilkat method called asynchronously. Unicode C

#include <C_CkSocketW.h>
#include <C_CkTaskW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocketW socket;
    int maxWaitMs;
    HCkTaskW task;

    success = FALSE;

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

    socket = CkSocketW_Create();

    // The Async call simply creates the task.  The "Connect" method has not yet been called.
    maxWaitMs = 5000;
    // Let's intentionally cause this connect to fail by giving it an invalid domain..
    task = CkSocketW_ConnectAsync(socket,L"amazonbladflakjsdflksadjf.com",443,TRUE,maxWaitMs);
    if (CkSocketW_getLastMethodSuccess(socket) == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkSocketW_Dispose(socket);
        return;
    }

    // Start the background thread to run the task.
    success = CkTaskW_Run(task);
    if (!success) {
        wprintf(L"%s\n",CkTaskW_lastErrorText(task));
        CkTaskW_Dispose(task);
        CkSocketW_Dispose(socket);
        return;
    }

    // The application is now free to do anything else

    // For this example, we'll simply sleep and periodically
    // check to see if the Socket Connect if finished.
    while (CkTaskW_getFinished(task) != TRUE) {
        // Sleep 1 ms.
        CkTaskW_SleepMs(task,1);
    }

    // If the task completed, it means the method (in this case the Connect method) was called and returned success or failure.
    if (CkTaskW_getStatusInt(task) != 7) {
        wprintf(L"Task did not complete.\n");
        wprintf(L"task status: %s\n",CkTaskW_status(task));
        CkTaskW_Dispose(task);
        CkSocketW_Dispose(socket);
        return;
    }

    // Get the success/failure of the Connect
    // (This is the return value of the Connect method had it been called synchronously)
    success = CkTaskW_GetResultBool(task);
    if (success == FALSE) {
        // Get the LastErrorText for the Connect method call.
        // Had we called Connect synchronously, we would've simply accessed the socket object's LastErrorText property.
        // Instead, we get the task object's ResultErrorText.
        wprintf(L"%s\n",CkTaskW_resultErrorText(task));
    }
    else {
        wprintf(L"Connect succeeded.\n");
    }

    CkTaskW_Dispose(task);


    CkSocketW_Dispose(socket);

    }