[HTTPCLIENT-1970] HttpClient does not support (non preemptive) digest authentication

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 4.5.6
• Component/s: HttpClient (classic)
• Assignee: Unassigned
• Reporter: Cisto Cyriac
• Created: 25/Feb/19 19:43
• Updated: 26/Feb/19 17:13
• Resolved: 26/Feb/19 16:56

Description

In HttpClient 4.5.6 the preemptive digest authentication works, however non-Preemptive digest authentication does not work.  We found this issue when the HttpClient library was upgraded from 4.4.1 to 4.5.6.  

As per  rfc2617  https://tools.ietf.org/html/rfc2617#section-3.2.1

nonce  is a server-specified data string which should be uniquely generated each time a 401 response is made.

This issue can  be reproduced by commenting out the following two digest authentication override parameters in the preemptive auth example in https://hc.apache.org/httpcomponents-client-4.5.x/httpclient/examples/org/apache/http/examples/client/ClientPreemptiveDigestAuthentication.java

 

DigestScheme digestAuth = new DigestScheme();
// Suppose we already know the realm name
//digestAuth.overrideParamter("realm", "some realm");
// Suppose we already know the expected nonce value
//digestAuth.overrideParamter("nonce", "whatever");