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https://issues.apache.org/jira/browse/HTTPCLIENT-1882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532707#comment-16532707
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ASF subversion and git services commented on HTTPCLIENT-1882:
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Commit 060cf48d4bbca8e040cda180e0a0e879bf41383d in httpcomponents-client's
branch refs/heads/4.5.x from [~olegk]
[ https://git-wip-us.apache.org/repos/asf?p=httpcomponents-client.git;h=060cf48
]
HTTPCLIENT-1882: reset authentication state on I/O or runtime error for
connection based authentication schemes (such as NTLM)
> NTLM authentication error: Unexpected state: MSG_TYPE3_GENERATED
> ----------------------------------------------------------------
>
> Key: HTTPCLIENT-1882
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1882
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (async), HttpClient (classic), HttpClient
> (Windows)
> Affects Versions: 4.5.1
> Reporter: Matthias Schmalz
> Priority: Major
> Labels: stuck, volunteers-wanted
> Fix For: 4.5.6, 5.0 Beta2
>
> Attachments: MSG_TYPE3_GENERATED-temporary-fix.patch, commonCase.log,
> httpclient-v4.5.5-MSG_TYPE3_GENERATED.txt, image-2018-05-04-12-43-37-213.png,
> rareCase.log
>
>
> We use the httpClient as part of our products to send http requests. One of
> our customers makes use of NTLM authentication. In most cases (as in
> commonCase.log), authentication works well.
> In rare cases (as in rareCase.log), the HttpAuthenticator logs
> {code:java}
> ERROR org.apache.http.impl.auth.HttpAuthenticator: NTLM authentication error:
> Unexpected state: MSG_TYPE3_GENERATED
> {code}
> Note that in rareCase.log the http client does not log anything between
> 10:08:48.990 and 10:10:23.577. We have analysed numerous cases where the
> authentication was and was not successful. We have observed that this period
> of inactivity occurs if and only if the NTLM authentication error is logged.
> Is this a bug?
> If not, could you please provide further information on why this is logged
> and how this can be avoided?
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