On Tue, Aug 9, 2011 at 15:20, Zaid Amireh <[email protected]> wrote:
>
> On Aug 8, 2011, at 3:56 PM, Ben Noordhuis wrote:
>
>> On Mon, Aug 8, 2011 at 10:29, Zaid Amireh <[email protected]> wrote:
>>> I'm writing a module for Apache 2.2 that changes the content and thus needs 
>>> to set a new C-L header, all is working perfectly for static files and 
>>> content generated from content handlers (PHP & Ruby Passenger Phusion), an 
>>> issue arose when testing with mod_proxy, it seems that any changes the 
>>> module does to the HTTP headers are being ignored by mod_proxy.
>>>
>>> mod_proxy keeps serving the headers it first got from the backend source 
>>> and disregards any changes my module does, is it possible to change the 
>>> headers in this case?
>>
>> Yes. Have a look at proxy_hook_fixups() in mod_proxy.h.
>
> I just tried proxy_hook_fixups and it runs even before the proxy gets the 
> content from the backend which is not what I need, I also tried the other 
> hook proxy_hook_request_status and this one runs after the content has been 
> sent to the client which means changing the headers in it will have no effect.
>
> I found proxy_hook_post_request which fits nicely to where I need to change 
> the headers but it is only executed when the backend sends an error so that 
> won't work as well.

post_request should always run, excluding error conditions like bad
requests. Maybe that behaviour has changed over time but I don't think
so, most of the code in mod_proxy is pretty old.

> Did I miss something here?
>
> Zaid

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