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From "Ian Roberts (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CXF-1387) Support for GZIP compression of HTTP payloads
Date Thu, 10 Jan 2008 17:40:34 GMT

     [ https://issues.apache.org/jira/browse/CXF-1387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ian Roberts updated CXF-1387:
-----------------------------

    Attachment: gzip-interceptors.diff

Diff with the GZIP interceptors.  I'm not really sure whereabouts in the CXF tree they belong
- in this diff they're in rt/core under org.apache.cxf.interceptor but as they use the PROTOCOL_HEADERS
they might be better off somewhere specific to HTTP, you're a better judge of that than I
am.

> 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.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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