[jira] [Commented] (KNOX-2102) Issue with Content-Length Header when rewriting response body

["Kevin Risden (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KNOX-2102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969341#comment-16969341 ] 

Kevin Risden commented on KNOX-2102:
------------------------------------

I would tread very carefully here. Content length is used in the HTTP spec in a few places as far as I remember. Excluding the header I think can break different types of transfers.

This seems like a big bandaid instead of fixing the root cause which is making sure the content length from Knox is correct.

> Issue with Content-Length Header when rewriting response body
> -------------------------------------------------------------
>
>                 Key: KNOX-2102
>                 URL: https://issues.apache.org/jira/browse/KNOX-2102
>             Project: Apache Knox
>          Issue Type: Bug
>            Reporter: In Park
>            Priority: Minor
>
> Content-Length value is preserved although response body is rewritten by KNOX. This causes a content length mismatch error.
> DefaultDispatch.copyResponseHeaderFields() copies the Content-Length header from the original response regardless of whether rewrite happens or not.
> *workaround*: This can be worked around by configuring the dispatch to exclude this header.
> {code:java}
> <dispatch classname="org.apache.knox.gateway.dispatch.ConfigurableDispatch">
>     <param>
>         <name>responseExcludeHeaders</name>
>         <value>CONTENT-LENGTH</value>
>     </param>
> </dispatch>
> {code}



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