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From "Carsten Ziegeler (Jira)" <>
Subject [jira] [Commented] (SLING-7760) Sling Main Servlet - Change header configuration to a service
Date Fri, 10 Jan 2020 16:24:00 GMT


Carsten Ziegeler commented on SLING-7760:

Just as a side comment - we can change the implementation to not restart the main servlet
if the configuration changes

> Sling Main Servlet - Change header configuration to a service
> -------------------------------------------------------------
>                 Key: SLING-7760
>                 URL:
>             Project: Sling
>          Issue Type: Improvement
>            Reporter: Jason E Bailey
>            Assignee: Jason E Bailey
>            Priority: Major
> The ability to set headers must be done prior to any writing that occurs the output stream.
This is the reason why the headers are set to be configured in the Sling Main Servlet.
> With Sling being used to maintain multiple sites, having a single set of response headers
creates problems where the header provides a non tailored response. One site may have a conflicting
set of requirements then another site.
> If the setting of headers was moved from being a configuration to being a service used
by the Main Servlet, this would allow the following:
>  * Headers set on a per site basis
>  * Headers based on selected resource
>  * Ability to modify the headers without causing the restart of the Sling Main Servlet
>  ** Which if you're dealing with CSP headers can be a constant pain
>  * Ability to create a CSP configuration Service that eases the use of CSP creation

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