NSURLConnection example

gistfile1.m

- (void)startLoading {
   self.connection = [[NSURLConnection alloc] initWithRequest:self.request delegate:self];
   if (!self.connection) {
       [self.client URLProtocol:self didFailWithError:nil];
   }
}

- (void)stopLoading {
   [self.connection cancel];
   self.connection = nil;
}


- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
   // Check for redirect and possibly call [self.client URLProtocol:(NSURLProtocol *) wasRedirectedToRequest:(NSURLRequest *) redirectResponse:(NSURLResponse *)]??
   [self.client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
   [self.client URLProtocol:self didLoadData:data];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
   [self.client URLProtocolDidFinishLoading:self];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
   [self.client URLProtocol:self didFailWithError:error];
   self.connection = nil;
}