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RE: 305 Use Proxy deprecated?

From: Eric Lawrence <ericlaw@exchange.microsoft.com>
Date: Fri, 15 Jun 2007 10:24:27 -0700
To: Adrien de Croy <adrien@qbik.com>, HTTP Working Group <ietf-http-wg@w3.org>
Message-ID: <8301DE7F96C0074C8DA98484623D7E5115801684CA@DF-MASTIFF-MSG.exchange.corp.microsoft.com>

As you noted, Internet Explorer (and WinINET/WinHTTP) has never supported this status code.

As implied in the RFC, there are potential security concerns for supporting this status code, and it's not clear that its practical usefulness outweighs its complexity.

Eric Lawrence
Program Manager
Internet Explorer

-----Original Message-----
From: ietf-http-wg-request@w3.org [mailto:ietf-http-wg-request@w3.org] On Behalf Of Adrien de Croy
Sent: Thursday, June 14, 2007 10:16 PM
To: HTTP Working Group
Subject: 305 Use Proxy deprecated?



Hi All

can't find any browser that supports this.

* IE 6 silently fails (shows blank page, does not attempt connection to
proxy).
* FF 2 silently fails (shows blank page, does not attempt connection to
proxy).
* Opera displays message "The server tried to redirect Opera to the
alternative proxy "http://xxxxxxxx". For security reasons this is no
longer supported."

So looks like the main browsers (haven't tried Safari) have de facto
deprecated it.

Is it an optional code to handle?  RFC2616 is extremely sparse in its
description of the status code.

Adrien
Received on Friday, 15 June 2007 17:26:06 GMT

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