Sent when a connection must authenticate a challenge in order to download its request.
Original signature is '- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge'
Available in Mac OS X v10.2 with Safari 1.0 installed and later.

C# | Visual Basic | Visual C++ |
public event NSURLConnection..::..ConnectionDidReceiveAuthenticationChallengeEventHandler ConnectionDidReceiveAuthenticationChallenge
Public Event ConnectionDidReceiveAuthenticationChallenge As NSURLConnection..::..ConnectionDidReceiveAuthenticationChallengeEventHandler
public: event NSURLConnection..::..ConnectionDidReceiveAuthenticationChallengeEventHandler^ ConnectionDidReceiveAuthenticationChallenge { void add (NSURLConnection..::..ConnectionDidReceiveAuthenticationChallengeEventHandler^ value); void remove (NSURLConnection..::..ConnectionDidReceiveAuthenticationChallengeEventHandler^ value); }

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)