Sent to determine whether the delegate is able to respond to a protection space’s form of authentication.
Original signature is '- (BOOL)download:(NSURLDownload *)download canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace'
Available in Mac OS X v10.6 and later.

C# | Visual Basic | Visual C++ |
public delegate bool DownloadCanAuthenticateAgainstProtectionSpaceEventHandler( NSURLDownload download, NSURLProtectionSpace protectionSpace )
Public Delegate Function DownloadCanAuthenticateAgainstProtectionSpaceEventHandler ( _ download As NSURLDownload, _ protectionSpace As NSURLProtectionSpace _ ) As Boolean
public delegate bool DownloadCanAuthenticateAgainstProtectionSpaceEventHandler( NSURLDownload^ download, NSURLProtectionSpace^ protectionSpace )

- download (NSURLDownload)
- The download sending the message.
- protectionSpace (NSURLProtectionSpace)
- The protection space that generates an authentication challenge.


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