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Posted to users@tomcat.apache.org by Teppei Yamada <te...@silk.co.jp> on 2012/04/01 11:15:07 UTC
Implementing mod_headers for response in Tomcat7
Hi,
I wanted to write something similar to apache httpd's mod_headers so I
read through Tomcat7.0.26 source code.
Then I realized that that could not be achieved without modifying coyote's
Abstract(Http11|Ajp)Processor.prepareResponse().
That can never be done by Valve because some HTTP headers are added just
in (or SessionCookie is right before) prepareResponse function and it
immediately writes headers to OutputBuffer and set committed.
So I propose inserting some code in prepareResponse.
Is is acceptable?
---
Teppei
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Re: Implementing mod_headers for response in Tomcat7
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Teppei,
On 4/1/12 5:15 AM, Teppei Yamada wrote:
> I wanted to write something similar to apache httpd's mod_headers
> so I read through Tomcat7.0.26 source code. Then I realized that
> that could not be achieved without modifying coyote's
> Abstract(Http11|Ajp)Processor.prepareResponse(). That can never be
> done by Valve because some HTTP headers are added just in (or
> SessionCookie is right before) prepareResponse function and it
> immediately writes headers to OutputBuffer and set committed.
Most headers in Tomcat are added by components other than the
Processor and/or Connector. If you insert a Valve into the valve
chain, you can often intercept and/or re-write the headers at will.
- -chris
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Re: Implementing mod_headers for response in Tomcat7
Posted by Pid <pi...@pidster.com>.
On 01/04/2012 10:15, Teppei Yamada wrote:
> Hi,
>
>
> I wanted to write something similar to apache httpd's mod_headers so I
> read through Tomcat7.0.26 source code.
> Then I realized that that could not be achieved without modifying coyote's
> Abstract(Http11|Ajp)Processor.prepareResponse().
> That can never be done by Valve because some HTTP headers are added just
> in (or SessionCookie is right before) prepareResponse function and it
> immediately writes headers to OutputBuffer and set committed.
A Valve would be the way to address this requirement.
> So I propose inserting some code in prepareResponse.
> Is is acceptable?
You can customise Tomcat as you see fit, at your own risk.
Given your other thread regarding secure session cookies, I assume that
your requirement above is derived from a wish to modify the cookie header?
p
> ---
> Teppei
>
>
>
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
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