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Date: Fri, 18 Jul 2008 13:53:31 -0700 (PDT)
From: "Daniel Kulp (JIRA)" <jira@apache.org>
To: issues@cxf.apache.org
Subject: [jira] Commented: (CXF-1387) Support for GZIP compression of HTTP
 payloads
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    [ https://issues.apache.org/jira/browse/CXF-1387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614869#action_12614869 ] 

Daniel Kulp commented on CXF-1387:
----------------------------------


This is really nicely done. I'm not sure how we missed this back in January.  Sorry about that.   I'm definitely going to get this applied.  

> Support for GZIP compression of HTTP payloads
> ---------------------------------------------
>
>                 Key: CXF-1387
>                 URL: https://issues.apache.org/jira/browse/CXF-1387
>             Project: CXF
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Ian Roberts
>         Attachments: gzip-interceptors-v2.diff, gzip-interceptors.diff
>
>
> This patch contains a pair of interceptors I wrote to provide support for proper GZIP compression of request and response messages.  I originally started from the configuration_interceptor sample but the code has evolved quite a long way from there now.
> There are two separate interceptors.  GZIPInInterceptor looks in the PROTOCOL_HEADERS for a Content-Encoding of "gzip", and if found it wraps the message's InputStream with a GZIPInputStream to uncompress the payload.  It restores the original input stream at the end of processing (failure to do that originally left me with lots of stale HTTP connections).
> GZIPOutInterceptor applies gzip compression to outgoing messages whose payload is larger than a configurable threshold (default 1kB), and sets their Content-Encoding in the PROTOCOL_HEADERS to "gzip".  Smaller messages are not compressed as it's probably not worth the overhead.
> As currently written, these interceptors are only for use on the client side (compress the request, uncompress the response).  In my services I implement the server-side compression outside of CXF via a servlet filter (http://sourceforge.net/projects/pjl-comp-filter), but if you think it would be useful I can modify the interceptors to support this too - the "in" interceptor should work as-is, the "out" one would have to be made conditional on the Accept-Encoding header supplied in the client request.

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