org.apache.http.client
Interface AuthenticationStrategy

All Known Implementing Classes:
ProxyAuthenticationStrategy, TargetAuthenticationStrategy

public interface AuthenticationStrategy

/** A handler for determining if an HTTP response represents an authentication challenge that was sent back to the client as a result of authentication failure.

Implementations of this interface must be thread-safe. Access to shared data must be synchronized as methods of this interface may be executed from multiple threads.

Since:
4.2

Method Summary
 void authFailed(HttpHost authhost, AuthScheme authScheme, HttpContext context)
          Callback invoked in case of unsuccessful authentication.
 void authSucceeded(HttpHost authhost, AuthScheme authScheme, HttpContext context)
          Callback invoked in case of successful authentication.
 Map<String,Header> getChallenges(HttpHost authhost, HttpResponse response, HttpContext context)
          Extracts from the given HTTP response a collection of authentication challenges, each of which represents an authentication scheme supported by the authentication host.
 boolean isAuthenticationRequested(HttpHost authhost, HttpResponse response, HttpContext context)
          Determines if the given HTTP response response represents an authentication challenge that was sent back as a result of authentication failure.
 Queue<AuthOption> select(Map<String,Header> challenges, HttpHost authhost, HttpResponse response, HttpContext context)
          Selects one authentication challenge out of all available and creates and generates AuthOption instance capable of processing that challenge.
 

Method Detail

isAuthenticationRequested

boolean isAuthenticationRequested(HttpHost authhost,
                                  HttpResponse response,
                                  HttpContext context)
Determines if the given HTTP response response represents an authentication challenge that was sent back as a result of authentication failure.

Parameters:
authhost - authentication host.
response - HTTP response.
context - HTTP context.
Returns:
true if user authentication is required, false otherwise.

getChallenges

Map<String,Header> getChallenges(HttpHost authhost,
                                 HttpResponse response,
                                 HttpContext context)
                                 throws MalformedChallengeException
Extracts from the given HTTP response a collection of authentication challenges, each of which represents an authentication scheme supported by the authentication host.

Parameters:
authhost - authentication host.
response - HTTP response.
context - HTTP context.
Returns:
a collection of challenges keyed by names of corresponding authentication schemes.
Throws:
MalformedChallengeException - if one of the authentication challenges is not valid or malformed.

select

Queue<AuthOption> select(Map<String,Header> challenges,
                         HttpHost authhost,
                         HttpResponse response,
                         HttpContext context)
                         throws MalformedChallengeException
Selects one authentication challenge out of all available and creates and generates AuthOption instance capable of processing that challenge.

Parameters:
challenges - collection of challenges.
authhost - authentication host.
response - HTTP response.
context - HTTP context.
Returns:
authentication auth schemes that can be used for authentication. Can be empty.
Throws:
MalformedChallengeException - if one of the authentication challenges is not valid or malformed.

authSucceeded

void authSucceeded(HttpHost authhost,
                   AuthScheme authScheme,
                   HttpContext context)
Callback invoked in case of successful authentication.

Parameters:
authhost - authentication host.
authScheme - authentication scheme used.
context - HTTP context.

authFailed

void authFailed(HttpHost authhost,
                AuthScheme authScheme,
                HttpContext context)
Callback invoked in case of unsuccessful authentication.

Parameters:
authhost - authentication host.
authScheme - authentication scheme used.
context - HTTP context.


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