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Re: X-Accel-Redirect testing

António P. P. Almeida
October 02, 2012 08:20AM
On 2 Out 2012 14h01 CEST, nginx-forum@nginx.us wrote:

> António P. P. Almeida Wrote:
> -------------------------------------------------------
>
>> XSendfile in Nginx is called X-Accel-Redirect.
>>
>> The way X-Accel-Redirect works is that your app/backend sends a
>> "special" header with the location of the file that is to be served
>> by Nginx. Usually the application case is for speeding up the
>> delivery of protected/private files. Let's say you have a ecommerce
>> site that sells digital downloads. Then these files will be
>> protected and for speeding up the delivery your application sends
>> an X-Accel-Redirect header with the location of the file. Then the
>> file is delivered by Nginx as a regular static file.
>>
>> Example: I request to download:
>>
>> http://myshop.com/downloads/big_hit.flac
>>
>> The file is stocked at /path/to/the/flac_files/big_hit.flac
>>
>> your ecommerce sends an header:
>>
>> X-Accel-Redirect: /path/to/the/flac_files/big_hit.flac
>>
>> when Nginx sees this he knows that now the file is to be served
>> directly from the file system as a regular static file. Note that
>> the real location is hidden from the client.
>>
>> Note that the real location must be protected from direct access by
>> the client always, be it from your app, be it from your server, for
>> example using the internal keyword:
>>
>> http://nginx.org/en/docs/http/ngx_http_core_module.html#internal
>>
>> In a nutshell that's how it works.
>
> I ended up using nginx as a reverse proxy, although this is what I
> wanted to avoid in the first place (bandwidth reasons). Main
> traffic passes through nginx which forwards it to apache by
> proxy_pass, and apache sends back the X-Accel-Redirect and nginx
> responds with the file (protected with internal; ).

Instead of Apache you can make your app return that header. For
example, on drupal there's a module that sends that header for
protected file systems.

--- appa



> Posted at Nginx Forum:
> http://forum.nginx.org/read.php?2,231059,231311#msg-231311
>
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Subject Author Posted

X-Accel-Redirect testing

w00t September 25, 2012 06:28PM

Re: X-Accel-Redirect testing

Jonathan Matthews September 25, 2012 07:08PM

Re: X-Accel-Redirect testing

w00t September 26, 2012 04:17AM

Re: X-Accel-Redirect testing

António P. P. Almeida September 26, 2012 05:04AM

Re: X-Accel-Redirect testing

nginxorg September 26, 2012 05:12AM

Re: X-Accel-Redirect testing

w00t October 02, 2012 08:01AM

Re: X-Accel-Redirect testing

António P. P. Almeida October 02, 2012 08:20AM



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