Failed Uploads Fix

Comienza en TripManager.m, en connection:didReceiveResponse:, e inspecciona cómo se asignan los códigos de estado de NSHTTPURLResponse a los resultados de las subidas. Compara los estados gestionados con las respuestas del servidor que utiliza la aplicación y verifica después que las subidas correctas ya no muestren el mensaje kServerError.

Lloyd and I think we figured out the reason why uploads are failing. In TripManager.m there is a switch statement which runs through a bunch of server responses and if it does not receive any of them defaults to a kServerError message which prints "Upload Failed. Try again later." We just need to rewrite the switch statement to cover all scenarios of server responses because uploads are going through but the server is not passing a message back that the switch statement can interpret so it is defaulting to a failed upload.

\- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    // this method is called when the server has determined that it
    // has enough information to create the NSURLResponse
    NSLog(@"didReceiveResponse: %@", response);

```
NSHTTPURLResponse *httpResponse = nil;
if ( [response isKindOfClass:[NSHTTPURLResponse class]] &&
    ( httpResponse = (NSHTTPURLResponse*)response ) )
{
    BOOL success = NO;
    NSString *title   = nil;
    NSString *message = nil;
    switch ( [httpResponse statusCode] )
    {
        case 200:
        case 201:
            success = YES;
            title   = kSuccessTitle;
            message = kSaveSuccess;
            break;
        case 202:
            success = YES;
            title   = kSuccessTitle;
            message = kSaveAccepted;
            break;
        case 500:
        default:
            title = @"Internal Server Error";
            //message = [NSString stringWithFormat:@"%d", [httpResponse statusCode]];
            message = kServerError;
    }

    NSLog(@"%@: %@", title, message);

    //
    // DEBUG
    NSLog(@"+++++++DEBUG didReceiveResponse %@: %@", [response URL],[(NSHTTPURLResponse*)response allHeaderFields]);

    if ( success )
    {
        [note setUploaded:[NSDate date]];

        NSError *error;
        if (![managedObjectContext save:&error]) {
            // Handle the error.
            NSLog(@"TripManager setUploaded error %@, %@", error, [error localizedDescription]);
        }

        [uploadingView loadingComplete:kSuccessTitle delayInterval:.7];
    } else {

        [uploadingView loadingComplete:kServerError delayInterval:1.5];
    }
}

// it can be called multiple times, for example in the case of a
// redirect, so each time we reset the data.

// receivedData is declared as a method instance elsewhere
[receivedDataNoted setLength:0];
```

}