Tavian Barnes wrote:
It's probably me in this case, but I believe one of us is not understanding this right.Just an idea from a guy who really knows next to nothing about proxies : If - a proxy configuration allows you to selectively forward some requests to a selection of sites, but not to a local file - but what you want to do is to redirect some URLs to a local file then can you not set up a local virtual host under some name, and forward ditto "local" requests to that local virtual host, whose pleasure it would be to serve the local stuff in question ? AndréThe thing is, when the browser sends the request to the local virtual host, it's treating it like a proxy server. So, the local host would have to be able to recognise a proxy request for a certain page, and return a local file instead, which is the same thing I'm trying to do now.
At the browser level, you are requesting items from www.google.com, and the browser is configured to use serverA as a http proxy, right ?
And what you want is that the proxy on serverA would get some stuff really from www.google.com, but some other stuff it should deliver from local files instead, still right ? But that is something you cannot configure easily, because there is no way in the proxy to tell it to forward some requests to a http server, but serve some other ones from local files. Still right ?
So, what I mean is that on the same host hosting serverA, (which you use as a http proxy), you also configure a separate serverB (virtual), which can deliver some "local" files (if a suitable request URL requests them). (or you set up serverB on a totally separate local host, whatever).
The browser requests are all directed to www.google.com, but still all requests go through serverA, because it is the configured http proxy. And serverA, by virtue of its proxy functionality would normally forward these requests to www.google.com (or serve them from its cache of www.google.com items).
Now in serverA, you set up some early URL filter which will rewrite (modify) all requests which you do not really want to go to www.google.com, and substitute the appropriate URL so that this item will be instead "proxied" to serverB instead of www.google.com. (In other words e.g., in all requests ending in ".gif", you change to hostname to "serverB"). So for some requests, www.google.com delivers the content, while from some others it will be serverB. But all responses eventually go back through the serverA proxy, which delivers them to the browser.
I believe the browser wouldn't know the difference, because for him all requests are to www.google.com (while using the proxy serverA), and that's where it thinks it gets the responses from. I don't think that the browser "matches" the responses back with its requests, to check inside if they really come from the same place. Because if it did, then the whole proxy mechanism wouldn't work in the first place.
Or maybe I'm totally wrong with this, but it seems at least plausible, no ? André --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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