[jetty-dev] [jira] (JETTY-1409) GzipFilter will double-compress application/x-gzip content

    [ https://jira.codehaus.org/browse/JETTY-1409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=293171#comment-293171 ] 

Jan Bartel commented on JETTY-1409:
-----------------------------------

Nick,

Actually the GzipFilter is checking whether on not the Content-Type has been set on the response and whether the Accept-Encoding includes "gzip" in order to determine if the content is gzippable.

So I can't see how the file is being gzipped twice, as once the zipping starts it sets the Content-Type header, which should prevent any further entry of the filter.

Jan
                
> GzipFilter will double-compress application/x-gzip content
> ----------------------------------------------------------
>
>                 Key: JETTY-1409
>                 URL: https://jira.codehaus.org/browse/JETTY-1409
>             Project: Jetty
>          Issue Type: Bug
>    Affects Versions: 6.1.26
>            Reporter: Nick Pellow
>            Assignee: Jan Bartel
>
> The GzipFilter only excludes zipping mime-types of application/gzip.
> If a file is of type application/x-gzip it gets double-zipped, and needs to be uncompressed twice on the client.
> The following is from the Javadoc on GzipFilter:
> {quote}
>  * The content-type is in the comma separated list of mimeTypes set in the <code>mimeTypes</code> initParameter or
>  * if no mimeTypes are defined the content-type is not "application/gzip"
>  
> {quote}
> This should be extended to:
> {quote}
>  * if no mimeTypes are defined the content-type is not "application/gzip" or *"application/x-gzip"*
> {quote}
> application/x-gzip is the official mime-type for compressed files.
> And this is also what most clients will use when sending files to the server.

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