[HTTPCLIENT-1266] Flag issues in NTLM implementation prevent authentication on some servers

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2.2
• Fix Version/s: 4.2.3, 4.3 Alpha1
• Component/s: HttpClient (classic)
• Assignee: Unassigned
• Reporter: Karl Wright
• Created: 30/Nov/12 17:32
• Updated: 20/Sep/16 19:31
• Resolved: 05/Dec/12 12:43

Description

At the ManifoldCF project, we've recently encountered two SharePoint servers (Windows 2008 Server R2) which seem to be configured in a way that the connector cannot authenticate with them using httpcomponents NTLM. It's worth noting that cURL succeeds, so the NTLM setup is apparently reasonable. Furthermore, the mcf patched version of commons-httpclient also fails in exactly the same way, so it looks like a long-standing issue.

Working through the problem, it appears that the NTLM flags httpclient sends are, in some cases, inconsistent with the data we include. I am working on a httpclient patch, which I hope to be able to exercise in one of the client situations within the next week or two.

Please see CONNECTORS-572 for details and research results.