## org.apache.http.auth
Interface ContextAwareAuthScheme

All Superinterfaces:
  AuthScheme

All Known Implementing Classes:
  AuthSchemeBase, BasicScheme, DigestScheme, NegotiateScheme, NTLMScheme, RFC2617Scheme

    public interface ContextAwareAuthScheme

extends AuthScheme

This interface represents an extended authentication scheme that requires access to `HttpContext` in order to generate an authorization string. TODO: Fix AuthScheme interface in the next major version

Since:
  4.1

Method Summary
`Header` `authenticate(Credentials credentials, HttpRequest request, HttpContext context)` Produces an authorization string for the given set of `Credentials`.

Methods inherited from interface org.apache.http.auth.AuthScheme
`authenticate, getParameter, getRealm, getSchemeName, isComplete, isConnectionBased, processChallenge`

Method Detail

### authenticate

    Header authenticate(Credentials credentials,
                        HttpRequest request,
                        HttpContext context)
                        throws AuthenticationException

  Produces an authorization string for the given set of `Credentials`.

  Parameters:
    `credentials` - The set of credentials to be used for athentication
    `request` - The request being authenticated
    `context` - HTTP context
  Returns:
    the authorization string
  Throws:
    `AuthenticationException` - if authorization string cannot be generated due to an authentication failure

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