iphone http Request

1. Sync 

NSURL *url = [NSURL URLWithString:kURLPath]; 

NSURLRequest *request = [NSURLRequest requestWithURL:url]; 

NSURLResponse *response; 

NSError *error = nil; 

NSData *data = [NSURLConnection sendSynchronousRequest:request

returningResponse:&response error:&error];

if(data == nil) { NSLog(@”%@”, [error description]);

}

2. ASync 

NSURL *url = [NSURL URLWithString:kURLString]; 

NSURLRequest *request = [NSURLRequest requestWithURL:url]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

 [connection start];

NSUrlConnectionDelegate  사용

NSURLConnectionDelegate Header 응답

Body 전송

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)aResponse { response = [aResponse retain];

if ([response expectedContentLength] < 0) { [connection cancel];

}

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)aData {

// 다운로드한 데이터를 추가 [receiveData appendData:aData];

}

NSURLConnectionDelegate

전송 완료

오류 처리

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

UIImage *image = [UIImage imageWithData:receiveData] [self.imageView setImage:image];

}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Connection Error"

[alert show]; [alert release];

}

message:[error description] delegate:self

cancelButtonTitle:@"Close" otherButtonTitles:nil];

ASIHTTPRequest

HTTP 요청과 응답 관련 라이브러리 간편한 사용성 보안 및 인증 지원 Queue를 활용한 다중 다운로드 지원

http://allseeing-i.com/ASIHTTPRequest/How-to-use