org.apache.hc.client5.http.impl.auth

## Class SPNegoScheme

- java.lang.Object
- - org.apache.hc.client5.http.impl.auth.GGSSchemeBase
  - - org.apache.hc.client5.http.impl.auth.SPNegoScheme

- All Implemented Interfaces:
    AuthScheme

      @Experimental
      public class SPNegoScheme
      extends GGSSchemeBase

  SPNEGO (Simple and Protected GSSAPI Negotiation Mechanism) authentication scheme.

  Please note this class is considered experimental and may be discontinued or removed in the future.

  Since:
    4.2

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `SPNegoScheme()`
    `SPNegoScheme(KerberosConfig config, DnsResolver dnsResolver)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected byte[]` | `generateToken(byte[] input, String serviceName, String authServer)`
    `String` | `getName()` Returns textual designation of the given authentication scheme.
    `boolean` | `isConnectionBased()` Determines if the authentication scheme is expected to provide an authorization response on a per connection basis instead of the standard per request basis

    - ### Methods inherited from class org.apache.hc.client5.http.impl.auth.GGSSchemeBase

      `createGSSContext, generateAuthResponse, generateGSSToken, getManager, getPrincipal, getRealm, isChallengeComplete, isResponseReady, processChallenge, toString`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### SPNegoScheme

          public SPNegoScheme(KerberosConfig config,
                      DnsResolver dnsResolver)

      Since:
        5.0

    - #### SPNegoScheme

          public SPNegoScheme()

  - ### Method Detail

    - #### getName

          public String getName()

      Description copied from interface: `AuthScheme`
      Returns textual designation of the given authentication scheme.
      Returns:
        the name of the given authentication scheme

    - #### generateToken

          protected byte[] generateToken(byte[] input,
                             String serviceName,
                             String authServer)
                                  throws GSSException

      Specified by:
        `generateToken` in class `GGSSchemeBase`
      Throws:
        `GSSException`

    - #### isConnectionBased

          public boolean isConnectionBased()

      Description copied from interface: `AuthScheme`
      Determines if the authentication scheme is expected to provide an authorization response on a per connection basis instead of the standard per request basis
      Returns:
        `true` if the scheme is connection based, `false` if the scheme is request based.

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