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From "Geert Schuring (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-1387) Support for GZIP compression of HTTP payloads
Date Mon, 23 Mar 2015 11:00:11 GMT

    [ https://issues.apache.org/jira/browse/CXF-1387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14375741#comment-14375741
] 

Geert Schuring commented on CXF-1387:
-------------------------------------

If I am not wrong the cxf client should never gzip its outgoing message. The http spec says
that Gzip compression is to be negotiated by use of the Accept-Encoding header. This means
only the server can respond with a zipped reply, and the request from the client will never
contain gzipped contents.

Any thoughts on this?

> 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
>            Assignee: Daniel Kulp
>             Fix For: 2.1.2
>
>         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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