Re: [users@httpd] Use of ProxyPassReverse

[Daniel Ferradal <df...@apache.org>]

Awesome explanation Matt!

El mar., 29 ene. 2019 a las 19:36, Muggeridge, Matt
(<ma...@hpe.com>) escribió:
>
> ProxyPassReverse is used for rewriting response headers related only to redirection.   As per the docs, it affects only “Location”, “Content-Location” and “URI” headers on HTTP redirect responses.
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> The example they give is helpful (although cluttered with other concepts).  Here is a more crystalized version of the example and a protocol exchange for clarity.
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> ProxyPass         "/mirror/foo/" "http://backend.example.com/"
> ProxyPassReverse  "/mirror/foo/" "http://backend.example.com/"
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> If the backend server uses a redirect to some other location on the same backend server, the reverse-proxy rewrites the ‘redirect headers’ according to the ProxyPassReverse directive.
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> Let’s say the backend.example.com uses the location header to redirect a request http://backend.example.com/bar to http://backend.example.com/quux.  The end-to-end protocol exchange looks something like (caveat: written without validating):
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> Client Request:
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> GET /mirror/foo/bar HTTP/1.1
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> Host: example.com
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> Reverse Proxy rewrites it to the backend (courtesy of the ProxyPass directive):
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> GET /bar HTTP/1.1
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> Host: backend.example.com
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> Backend Server responds with a redirect using the location header:
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> HTTP/1.1 302 Found
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> Location: http://backend.example.com/quux
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> Reverse Proxy Intervenes (courtesy of the ProxyPassReverse directive) and rewrites the Location header to be:
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> HTTP/1.1 302 Found
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> Location: http://example.com/mirror/foo/quux
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> The client then reissues the request to the Location http://example.com/mirror/foo/quux and the Reverse Proxy forwards it onto http://backend.example.com/quux.
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> Matt.
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> From: Ananya Dey [mailto:ananyadey.95@gmail.com]
> Sent: Tuesday, 29 January 2019 9:13 PM
> To: users@httpd.apache.org
> Subject: [users@httpd] Use of ProxyPassReverse
>
>
>
> Hi all,
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>
>
> I am trying to connect my Apache webserver with my backend tomcat server. I am using ProxyPass to do the same. Is there a need to put ProxyPassReverse also along with it? I am not able to understand the working functionality of the two in depth. Could someone please elaborate on the same .
>
>
>
> Thanks
>
> Ananya



-- 
Daniel Ferradal
HTTPD Project
#httpd help at Freenode

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