Basic HTTP Authentication on iPhone

Question

I\'m trying to get a small twitter client running and I ran into a problem when testing API calls that require authentication.

My password has special characters in

Answer 1

You can directly aslo write download the username & password in main URL i.e https://username:password@yoururl.com/

First of all you need to call NSURLConnection Delegate file:-

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

  {

  return YES; }

and then call - (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge

{
if ([challenge previousFailureCount] == 0)
        {
            NSURLCredential *newCredential;

            newCredential = [NSURLCredential credentialWithUser:@"username"
                                                       password:@"password"
                                                    persistence:NSURLCredentialPersistenceForSession];
            NSLog(@"NEwCred:- %@ %@", newCredential, newCredential);
            [[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
        }
        else
        {
            [[challenge sender] cancelAuthenticationChallenge:challenge];
            NSLog (@"failed authentication");
        }
}

Answer 2

Two things. Firstly you have to use the async methods rather than the synchronous/class method.

NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:req]
                                                               cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                           timeoutInterval:30.0];

// create the connection with the request
// and start loading the data
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

The authentication is managed by implementing this method in your delegate:

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

And you'll probably also need to implement these methods too:

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error;
- (void)connectionDidFinishLoading:(NSURLConnection *)connection;

Using the async method tends to give a better user experience anyway so despite the extra complexity is worth doing even without the ability to do authentication.