Document Details

    - (IBAction)LogInAction:(id)sender {
        // create authentication header and set it in register client
        NSString* username = self.UsernameField.text;
        NSString* password = self.PasswordField.text;

        [self createAndSetAuthenticationHeaderWithUsername:username AndPassword:password];

        __weak ViewController* selfie = self;
        [self.registerClient registerWithDeviceToken:self.deviceToken tags:nil
            andCompletion:^(NSError* error) {
            if (!error) {
                dispatch_async(dispatch_get_main_queue(),
                ^{
                    selfie.SendNotificationButton.enabled = YES;
                    [self MessageBox:@"Success" message:@"Registered successfully!"];
                });
            }
        }];
    }

    - (void)SendNotificationASPNETBackend:(NSString*)pns UsernameTag:(NSString*)usernameTag
                Message:(NSString*)message
    {
        NSURLSession* session = [NSURLSession
            sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:nil
            delegateQueue:nil];

        // Pass the pns and username tag as parameters with the REST URL to the ASP.NET backend
        NSURL* requestURL = [NSURL URLWithString:[NSString
            stringWithFormat:@"%@/api/notifications?pns=%@&to_tag=%@", BACKEND_ENDPOINT, pns,
            usernameTag]];

        NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:requestURL];
        [request setHTTPMethod:@"POST"];

        // Get the mock authenticationheader from the register client
        NSString* authorizationHeaderValue = [NSString stringWithFormat:@"Basic %@",
            self.registerClient.authenticationHeader];
        [request setValue:authorizationHeaderValue forHTTPHeaderField:@"Authorization"];

        //Add the notification message body
        [request setValue:@"application/json;charset=utf-8" forHTTPHeaderField:@"Content-Type"];
        [request setHTTPBody:[message dataUsingEncoding:NSUTF8StringEncoding]];

        // Execute the send notification REST API on the ASP.NET Backend
        NSURLSessionDataTask* dataTask = [session dataTaskWithRequest:request
            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)
        {
            NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*) response;
            if (error || httpResponse.statusCode != 200)
            {
                NSString* status = [NSString stringWithFormat:@"Error Status for %@: %d\nError: %@\n",
                                    pns, httpResponse.statusCode, error];
                dispatch_async(dispatch_get_main_queue(),
                ^{
                    // Append text because all 3 PNS calls may also have information to view
                    [self.sendResults setText:[self.sendResults.text stringByAppendingString:status]];
                });
                NSLog(status);
            }

            if (data != NULL)
            {
                xmlParser = [[NSXMLParser alloc] initWithData:data];
                [xmlParser setDelegate:self];
                [xmlParser parse];
            }
        }];
        [dataTask resume];
    }