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Re: Redirection messages for proxy clients

From: Dave Kristol <dmk@bell-labs.com>
Date: Wed, 06 Jan 1999 14:06:54 -0500
Message-Id: <3693B44E.2E7D@bell-labs.com>
To: Frederic Delley <fdelley@nomadix.com>
Cc: http-wg@hplb.hpl.hp.com
> I was wondering if it is possible to redirect a client (configured to use a
> proxy) to communicate directly with an origin server, thus, bypassing the
> proxy server. In other words, can we force this client to use a partial URL
> instead of a full URL. I doubt that a JavaScript program or a META tag can
> help in this case. I am still not clear if a "301 Moved Permanently" or "302
> Moved Temporarily" message could do the trick.

I think the answer in all cases is "No".  Usually the client's
configuration determines whether a request uses a proxy.  Typically all
requests go through a proxy except for those in the "No Proxy" list.  I
believe Netscape has a proxy auto-configuration mechanism that can make
more sophisticated choices, but a random web page can't change that
configuration.  A Java applet might be able to connect directly to the
origin server, but you wouldn't use that for a "regular" HTTP request.

Dave Kristol
Received on Wednesday, 6 January 1999 19:08:24 EST

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