JSON GET Method request

I have developed a iphone 开发者_运维百科application that need to send User name and Password through HTTP authentication request header. can any one guide me or sent the source code for that functionalities.

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You'll need to implement the NSURLConnection:didReceiveAuthenticationChallenge: method.

- (void)request:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge { 
    if ([challenge previousFailureCount] == 0) { 
        NSURLCredential *newCredential = [NSURLCredential
                                              credentialWithUser:@"username"
                                              password:@"password" 
                                              persistence:NSURLCredentialPersistenceNone]; 
        [[challenge sender] useCredential:newCredential 
               forAuthenticationChallenge:challenge]; 
    } 
    else { 
        [[challenge sender] cancelAuthenticationChallenge:challenge];
    } 
}

Edit: Or you could simply send the credentials in the URL in the format http://username:password@www.example.com/