[HTTPCLIENT-1290] 304 cached response never reused with If-modified-since conditional requests

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.2.3
• Component/s: HttpCache
• Assignee: Unassigned
• Reporter: Francois-Xavier Bonnet
• Created: 07/Jan/13 08:56
• Updated: 05/Oct/13 19:42
• Resolved: 08/Jan/13 12:18

Description

Steps to reproduce the problem:

• cache is empty
• send a conditional If-modified-since request
• backend server responds with a 304 Not modified (the response does not contain the "Last-modified" header, this conforms to rfc 2616 chapter 10.3.5)
• the response is stored in the cache
• send another conditional If-modified-since request
• as the cache entry does not contain a Last-modified header to match with the If-modified-since request header, the cache considers the entry cannot be used and sends a request again to the backend server