未调用NSURLConnection异步委托方法

Question

I'm developing a WebService. And i'm developing my iOS client with NSURL. I send asynchronous request to server and got data (packet by packet). My request is sent to server correctly, but no delegate method are called.

@implementation WebServiceClientCom

...

-(void) connectionDidFinishedLoading:(NSURLConnection*) in_urlConnection
{
    int i=0;
}

-(void) connection:(NSURLConnection*) connection didReceiveResponse:(NSURLResponse *)response

{
    NSLog(@"YOUPI");
    int i=0;
}

-(void) connection:(NSURLConnection*) connection didReceiveData:(NSData *)data

{
    NSLog(@"YOUPI");
    int i=0;
}

-(void) connection:(NSURLConnection*) connection didSendBodyData:(NSInteger)bytesWritten totalBytesWritten:(NSInteger)totalBytesWritten totalBytesExpectedToWrite:(NSInteger)totalBytesExpectedToWrite;

{
    NSLog(@"YOUPI");
    int i=0;
}

-(void) connection: (NSURLConnection*)connection didFailWithError: (NSError*) error
{
    NSLog(@"%@", error);
    int i=0;
}

-(void) sendAsynchronousRequest: (NSData*) in_dataToSend
{
    _oUrlRequest.HTTPBody = in_dataToSend;
    _oUrlConnection = [[NSURLConnection alloc] initWithRequest:_oUrlRequest delegate:self startImmediately:YES];
    if(!_oUrlConnection)
        NSLog(@"Connection failed");
    else
        NSLog(@"Connection succeeded");
}

@end

I don't understand what is the problem? Why? Where?

Help me please :)

Answer 1

You probably forgot to set the delegate, make sure you do not pass nil as parameter:

NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

for more information take a look at using NSURLConnection

UPDATE

Try:

_oUrlConnection = [[NSURLConnection alloc] initWithRequest:_oUrlRequest delegate:self  startImmediately:NO];
[_oUrlConnection scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
[_oUrlConnection start];

Maybe it is being executed in another thread.

Answer 2

If you are not holding a strong reference to your WebServiceClientCom object, it could be thrown out before you receive a response. Try this where you're using this class instance instead:

@interface MyClass
@property (strong) WebServiceClientCom *myCommunicator;
/* ... */
@end

@implementation MyClass
- (void)communicate:(NSData *)data {
  if (!self.myCommunicator) {
    self.myCommunicator = [[WebServiceClientCom alloc] init];
  }
  [self.myCommunicator sendAsynchronousRequest:data];
}
@end

Answer 3

Ok, Thansk all, I just forgot [[NSRunLoop currentRunLoop] run] after my connection [[NSURLConnection alloc] intiWithRequest:request delegate:self startImmediately:YES]

But, I've got another problem: How can i quit this loop and so the asynchronous method??? ^^