```
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. API-Since: 2.0

Method Summary

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

Method Detail

cancelAuthenticationChallenge

void cancelAuthenticationChallenge(@NotNull
                                   @NotNull NSURLAuthenticationChallenge challenge)

cancelAuthenticationChallenge:

continueWithoutCredentialForAuthenticationChallenge

void continueWithoutCredentialForAuthenticationChallenge(@NotNull
                                                         @NotNull NSURLAuthenticationChallenge challenge)

continueWithoutCredentialForAuthenticationChallenge:

performDefaultHandlingForAuthenticationChallenge

default void performDefaultHandlingForAuthenticationChallenge(@NotNull
                                                              @NotNull NSURLAuthenticationChallenge challenge)

performDefaultHandlingForAuthenticationChallenge:

rejectProtectionSpaceAndContinueWithChallenge

default void rejectProtectionSpaceAndContinueWithChallenge(@NotNull
                                                           @NotNull NSURLAuthenticationChallenge challenge)

rejectProtectionSpaceAndContinueWithChallenge:

useCredentialForAuthenticationChallenge

void useCredentialForAuthenticationChallenge(@NotNull
                                             @NotNull NSURLCredential credential,
                                             @NotNull
                                             @NotNull NSURLAuthenticationChallenge challenge)

useCredential:forAuthenticationChallenge: