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Re: Issue 160 (Redirects and non-GET methods)

From: Julian Reschke <julian.reschke@gmx.de>
Date: Tue, 21 Sep 2010 15:53:26 +0200
Message-ID: <4C98B8D6.1090403@gmx.de>
To: HTTP Working Group <ietf-http-wg@w3.org>
On 20.09.2010 16:54, Julian Reschke wrote:
> On 19.09.2010 12:13, Julian Reschke wrote:
>> ...
>> The suggested fix for 1) is to allow UAs to do what they do today.
>> However, it's not totally clear how far we want to go with that:
>> 1a) We know that all major browsers rewrite the request method to GET
>> when receiving a 301/302 on POST.
>> 1b) Browsers do differ in their behavior for XmlHttpRequest, though. IE
>> only rewrites POST, and leaves other methods alone. Other browsers seem
>> to rewrite all methods (minus HEAD?). The fact that IE does only rewrite
>> for POST suggests that breaking the RFC 2616 semantics is not needed for
>> the other methods.
>> 1c) There are other UAs that do not rewrite the method name at all, and
>> indeed may be broken if they would start to do that (WebDAV clients
>> getting a redirect on PROPFIND come to mind; I also see this behavior in
>> Microsoft's XmlHttpRequest ActiveX control, though).
>> My proposal is to say SHOULD NOT change the method, except for GET which
>> can be changed to POST for compatibility with broken web content (which
>> should use 303 instead).
>> ...
> This one is pretty urgent, as HTNL5 allows PUT and DELETE in HTML forms.
> Browser implementers who actually do that will have to decide what to do
> with 301s and 302s.
> See related Mozilla bugzilla comment:
> <https://bugzilla.mozilla.org/show_bug.cgi?id=583288#c32>.
> ...

In the meantime, I have raised bugs against Webkit/Chromium//FF/Opera, 
pointing out that they do the method rewriting for more methods than it 
seems to be needed for, considering that IE only rewrites POST (see 
<http://trac.tools.ietf.org/wg/httpbis/trac/ticket/160> for the various 
issue links).

Best regards, Julian
Received on Tuesday, 21 September 2010 13:54:12 UTC

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