Objective-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. Objective-C

#import <CkoSocket.h>
#import <CkoTask.h>

BOOL success = NO;

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

CkoSocket *socket = [[CkoSocket alloc] init];

// The Async call simply creates the task.  The "Connect" method has not yet been called.
int maxWaitMs = 5000;
// Let's intentionally cause this connect to fail by giving it an invalid domain..
CkoTask *task = [socket ConnectAsync: @"amazonbladflakjsdflksadjf.com" port: [NSNumber numberWithInt: 443] ssl: YES maxWaitMs: [NSNumber numberWithInt: maxWaitMs]];
if (socket.LastMethodSuccess == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

// Start the background thread to run the task.
success = [task Run];
if (!success) {
    NSLog(@"%@",task.LastErrorText);

    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 (task.Finished != YES) {
    // Sleep 1 ms.
    [task SleepMs: [NSNumber numberWithInt: 1]];
}

// If the task completed, it means the method (in this case the Connect method) was called and returned success or failure.
if ([task.StatusInt intValue] != 7) {
    NSLog(@"%@",@"Task did not complete.");
    NSLog(@"%@%@",@"task status: ",task.Status);

    return;
}

// Get the success/failure of the Connect
// (This is the return value of the Connect method had it been called synchronously)
success = [task GetResultBool];
if (success == NO) {
    // 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.
    NSLog(@"%@",task.ResultErrorText);
}
else {
    NSLog(@"%@",@"Connect succeeded.");
}