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From "Jon Moore (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1198) HttpHost is not set in HttpContext in CachingHttpClient
Date Thu, 31 May 2012 17:09:23 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286750#comment-13286750

Jon Moore commented on HTTPCLIENT-1198:

Ok, I'm looking into this now, and fixing this should be straightforward, once we can agree
on the behavior. I think, for a cache miss, the CachingHttpClient should just let the underlying
HttpClient take care of setting all the context variables. For a pure cache hit, I think we

HTTP_TARGET_HOST : taken from the incoming request
HTTP_REQ_SENT : set to true once we know we're going to return a cached response (?)
HTTP_REQUEST : incoming request
HTTP_RESPONSE : set to the response generated by the cache

The only muddy part for me is what to do for a cache validation, where I have a stale entry
but am sending a conditional request to validate. I think this is exactly as above, except:

HTTP_REQ_SENT : set by underlying client once conditional request has been sent
HTTP_REQUEST : validation request, set by underlying client
HTTP_RESPONSE : actual origin response (possibly a 304), set by underlying client

The other options for request/response are to use the incoming request to the cache and the
validated cache response, but my inclination is that we should set these to the actual requests
and responses issued to/from the origin server. However, I could see good arguments either
way. Thoughts?

> HttpHost is not set in HttpContext in CachingHttpClient
> -------------------------------------------------------
>                 Key: HTTPCLIENT-1198
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1198
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: Cache, HttpClient
>    Affects Versions: 4.1.3, 4.2 Final
>            Reporter: Ilirjan Papa
>            Assignee: Jon Moore
> The HttpHost cames back as null, causing a NullPointerException when using CachingHttpClient.
> HttpHost actualHost = (HttpHost)requestContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
> The host should be set in the HttpContext.

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