org.apache.http.impl.auth
Class BasicScheme

java.lang.Object
  org.apache.http.impl.auth.AuthSchemeBase
      org.apache.http.impl.auth.RFC2617Scheme
          org.apache.http.impl.auth.BasicScheme

All Implemented Interfaces:

AuthScheme

@NotThreadSafe
public class BasicScheme
extends RFC2617Scheme

Basic authentication scheme as defined in RFC 2617.

The following parameters can be used to customize the behavior of this class:

• AuthPNames.CREDENTIAL_CHARSET

Since:

4.0

Constructor Summary

BasicScheme()
Default constructor for the basic authentication scheme.

Method Summary

Header	authenticate(Credentials credentials, HttpRequest request) Produces basic authorization header for the given set of Credentials.
static Header	authenticate(Credentials credentials, String charset, boolean proxy) Returns a basic Authorization header value for the given Credentials and charset.
String	getSchemeName() Returns textual designation of the basic authentication scheme.
boolean	isComplete() Tests if the Basic authentication process has been completed.
boolean	isConnectionBased() Returns false.
void	processChallenge(Header header) Processes the Basic challenge.

Methods inherited from class org.apache.http.impl.auth.RFC2617Scheme

getParameter, getParameters, getRealm, parseChallenge

Methods inherited from class org.apache.http.impl.auth.AuthSchemeBase

isProxy, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BasicScheme

public BasicScheme()

Default constructor for the basic authentication scheme.

Method Detail

getSchemeName

public String getSchemeName()

Returns textual designation of the basic authentication scheme.

Returns:

basic

processChallenge

public void processChallenge(Header header)
                      throws MalformedChallengeException

Processes the Basic challenge.

Specified by:

processChallenge in interface AuthScheme

Overrides:

processChallenge in class AuthSchemeBase

Parameters:

header - the challenge header

Throws:

MalformedChallengeException - is thrown if the authentication challenge is malformed

isComplete

public boolean isComplete()

Tests if the Basic authentication process has been completed.

Returns:

true if Basic authorization has been processed, false otherwise.

isConnectionBased

public boolean isConnectionBased()

Returns false. Basic authentication scheme is request based.

Returns:

false.

authenticate

public Header authenticate(Credentials credentials,
                           HttpRequest request)
                    throws AuthenticationException

Produces basic authorization header for the given set of Credentials.

Parameters:

credentials - The set of credentials to be used for authentication

request - The request being authenticated

Returns:

a basic authorization string

Throws:

InvalidCredentialsException - if authentication credentials are not valid or not applicable for this authentication scheme

AuthenticationException - if authorization string cannot be generated due to an authentication failure

authenticate

public static Header authenticate(Credentials credentials,
                                  String charset,
                                  boolean proxy)

Returns a basic Authorization header value for the given Credentials and charset.

Parameters:

credentials - The credentials to encode.

charset - The charset to use for encoding the credentials

Returns:

a basic authorization header