Volker Jung created HTTPCLIENT-1962:
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             Summary: WindowsNegotiateScheme
                 Key: HTTPCLIENT-1962
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1962
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: HttpClient (Windows)
    Affects Versions: 5.0 Beta3
            Reporter: Volker Jung


'WindowsNegotiateScheme.processChallenge' requires the value of an 
AuthChallenge to be present on any invocation, as it requires the GSSAPI-Data 
to perform the authentication process.

But the "WWW-Authenticate"-header of the initial "401 Unauthorized" response 
does not contain any GSSAPI-Data (see 
[RFC4559|https://tools.ietf.org/html/rfc4559#page-2], Section 4.1, first 
paragraph).

'WindowsNegotiateScheme.generateAuthResponse' correctly handles the initial 
case, as it does not require any challenge to be present.



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