## ProxyPassReverse

Syntax: ProxyPassReverse <path> <url>
Default: None
Context: server config, virtual host
Override: Not applicable
Status: Base
Module: mod_proxy
Compatibility: ProxyPassReverse is only available in Apache 1.3b6 and later.

This directive lets Apache adjust the URL in the `Location` header on HTTP redirect responses. For instance this is essential when Apache is used as a reverse proxy to avoid by-passing the reverse proxy because of HTTP redirects on the backend servers which stay behind the reverse proxy.

<path> is the name of a local virtual path.
<url> is a partial URL for the remote server - the same way they are used for the `ProxyPass` directive.

Example:
Suppose the local server has address `http://wibble.org/`; then

       ProxyPass         /mirror/foo/ http://foo.com/
       ProxyPassReverse  /mirror/foo/ http://foo.com/

will not only cause a local request for the <`http://wibble.org/mirror/foo/bar`> to be internally converted into a proxy request to <`http://foo.com/bar`> (the functionality `ProxyPass` provides here). It also takes care of redirects the server foo.com sends: when `http://foo.com/bar` is redirected by him to `http://foo.com/quux` Apache adjusts this to `http://wibble.org/mirror/foo/quux` before forwarding the HTTP redirect response to the client.

Note that this `ProxyPassReverse` directive can also be used in conjunction with the proxy pass-through feature ("`RewriteRule ... [P]`") from `mod_rewrite` because its doesn't depend on a corresponding `ProxyPass` directive.