iphone - https 上的 NSURLConnection 同步请求

Question

谁能告诉我如何同步调用 https 服务器？我可以使用以下委托(delegate)方法在 https 服务器上执行异步请求。

- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace

和

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge

但我需要进行同步。

Answer 1

//对请求进行编码

NSData *postData = [xmlText dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

**//Calculating length of request**
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:requestUrlString]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/xml" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSURLResponse* response;
NSError* error = nil;

//Capturing server response
NSData* result = [NSURLConnection sendSynchronousRequest:request  returningResponse:&response error:&error];