NSURLCredential not working for synchronuos request in iphone -

I am using synchronous request and passing credentials, but I am getting an authentication error in reply. Below is my request code and response to server.

Requests: -

  NSURLCredential * userCredentials = [NSURL credential credentials with user: @ "username" password: @ "passwad" firmly: NSURLCredentialPersistenceForSession]; NSURLProtectionSpace * space = [[NSURLProtectionSpace alloc] initWithHost: @ "http://webaddress.inc.com" Port: 80 protocol: @ "http" realm: @ "webaddress.inc.com" authentication method: zero]; [[NSURLCredentialStorage Shared Credential Storage] Set Credential: User Credentials for Protection Space: Space]; NSMutableURLRequest * urlRequest = [NSMutableURL request request with: URL: [NSURL URLWithString: @ "http://webaddress.inc.com"] Cash Policy: NSURLCacheStorageNotAllowed Timeframe Interval: 30]; NSURLResponse * response; NSError * error; NSDT * Return Data = [Send NSRR Connection Synchronous Request: Response Returning URLRACE: And Action Error: And Edition];  

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401 authorization required

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Note: If I'm sending The request with the Async request is fine that in the case that didReiveiveAuthenticationChallenge is asking them the necessary certificate.

I'm sure something in my code might be missing.

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