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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1488) Built-in NTLM engine fails to authenticate against Squids ntlm_fake_auth, JCIFS doesn't
Date Fri, 21 Mar 2014 12:39:44 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13943011#comment-13943011

Oleg Kalnichevski commented on HTTPCLIENT-1488:


As far as I can tell something goes sideways while generating type 3 message

2014/03/21 13:12:09:262 MEZ [DEBUG] RequestTargetAuthentication - Target auth state: UNCHALLENGED
2014/03/21 13:12:09:262 MEZ [DEBUG] RequestProxyAuthentication - Proxy auth state: HANDSHAKE
2014/03/21 13:12:09:264 MEZ [ERROR] RequestProxyAuthentication - NTLM authentication error:
NTLM authentication - buffer too small for data item
2014/03/21 13:12:09:264 MEZ [DEBUG] DefaultHttpClient - Attempt 3 to execute request


> Built-in NTLM engine fails to authenticate against Squids ntlm_fake_auth, JCIFS doesn't
> ---------------------------------------------------------------------------------------
>                 Key: HTTPCLIENT-1488
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1488
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.3.3
>         Environment: Squid 4.3.3
> JCIFS 1.3.17
>            Reporter: Andreas Sewe
>         Attachments: builtin.pcap.gz, builtin.txt, jcfis.pcap.gz, jcifs.txt
> I used the provided ClientProxyAuthentication example <https://hc.apache.org/httpcomponents-client-4.2.x/httpclient/examples/org/apache/http/examples/client/ClientProxyAuthentication.java>
to authenticate with NTML against a local Squid instance, using its ntlm_fake_auth helper
(only does the handshake, all credentials are considered valid).
> Unfortunately, this fails with the NTLM engine built into version 4.3.3 (also tested
with 4.2.1: same result). Following the guidance of <http://hc.apache.org/httpcomponents-client-ga/ntlm.html>,
I got it working with JCIFS. Is Squid not implementing NTLM as expected by HttpComponents?
> I added two Wireshark captures to show the differences in handshake behaviour between
the built-in and JCIFS engines. Hope that helps.

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