```
public interface NSURLAuthenticationChallengeSender
```
[@protocol] NSURLAuthenticationChallengeSender This protocol represents the sender of an authentication challenge. It has methods to provide a credential, to continue without any credential, getting whatever failure result would happen in that case, cancel a challenge, perform the default action as defined by the system, or reject the currently supplied protection-space in the challenge.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`cancelAuthenticationChallenge(NSURLAuthenticationChallenge challenge)`	cancelAuthenticationChallenge:
`void`	`continueWithoutCredentialForAuthenticationChallenge(NSURLAuthenticationChallenge challenge)`	continueWithoutCredentialForAuthenticationChallenge:
`default void`	`performDefaultHandlingForAuthenticationChallenge(NSURLAuthenticationChallenge challenge)`	performDefaultHandlingForAuthenticationChallenge:
`default void`	`rejectProtectionSpaceAndContinueWithChallenge(NSURLAuthenticationChallenge challenge)`	rejectProtectionSpaceAndContinueWithChallenge:
`void`	`useCredentialForAuthenticationChallenge(NSURLCredential credential, NSURLAuthenticationChallenge challenge)`	useCredential:forAuthenticationChallenge:

Method Detail

cancelAuthenticationChallenge

void cancelAuthenticationChallenge(NSURLAuthenticationChallenge challenge)

cancelAuthenticationChallenge:

continueWithoutCredentialForAuthenticationChallenge

void continueWithoutCredentialForAuthenticationChallenge(NSURLAuthenticationChallenge challenge)

continueWithoutCredentialForAuthenticationChallenge:

performDefaultHandlingForAuthenticationChallenge

default void performDefaultHandlingForAuthenticationChallenge(NSURLAuthenticationChallenge challenge)

performDefaultHandlingForAuthenticationChallenge:

rejectProtectionSpaceAndContinueWithChallenge

default void rejectProtectionSpaceAndContinueWithChallenge(NSURLAuthenticationChallenge challenge)

rejectProtectionSpaceAndContinueWithChallenge:

useCredentialForAuthenticationChallenge

void useCredentialForAuthenticationChallenge(NSURLCredential credential,
                                             NSURLAuthenticationChallenge challenge)

useCredential:forAuthenticationChallenge: