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https://issues.apache.org/jira/browse/HTTPCLIENT-834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12682460#action_12682460
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Oleg Kalnichevski commented on HTTPCLIENT-834:
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(1) Because ThreadLocals, when misused/abused, can lead to memory leaks or,
worse, very subtle bugs, especially in managed environments such as servlet or
EJB containers, where threads are frequently pooled / re-used. The most
catastrophic bug I have seen involved a ThreadLocal holding a UserPrincipal in
a web application, which was not correctly unset with a try-catch-finally. You
can pretty much guess the consequence of that bug.
The only two legitimate uses of ThreadLocal I know of is (1) in single-user
standalone applications or (2) in web applications when ThreadLocals set and
unset using a HttpServletFilter in try-catch-finally. ThreadLocal simply cannot
be reliably unset from inside a library. ThreadLocals in general purpose
libraries == major trouble.
(2) There should be a way to instruct the interceptor to generate different
Accept-Encoding values, for example 'gzip,deflate', "deflate,gzip", "identity",
etc, based a configuration parameter.
Oleg
> Transparent Content Coding support
> ----------------------------------
>
> Key: HTTPCLIENT-834
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-834
> Project: HttpComponents HttpClient
> Issue Type: New Feature
> Components: HttpClient
> Affects Versions: 4.0 Beta 3
> Environment: Any
> Reporter: James Abley
> Attachments: 834.patch
>
>
> I would like to see HttpClient features brought up to parity with other
> libraries, both in Java and other languages. c.f. Python's httplib2 (not yet
> in the standard library, but many would like to see it in there). That
> library transparently handles gzip and compress content codings.
> This issue is to capture possible solutions to providing this sort of innate
> functionality in HttpClient, so that users aren't required to know RFC2616
> intimately. The HttpClient library should do the right thing and use the
> network in the most efficient manner possible.
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