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Re: User confirmation and 307 redirects

From: Julian Reschke <julian.reschke@gmx.de>
Date: Thu, 19 Aug 2010 14:36:23 +0200
Message-ID: <4C6D2547.5010108@gmx.de>
To: Anne van Kesteren <annevk@opera.com>
CC: Yves Lafon <ylafon@w3.org>, Adam Barth <ietf@adambarth.com>, httpbis <ietf-http-wg@w3.org>, Maciej Stachowiak <mjs@apple.com>
On 19.08.2010 14:20, Anne van Kesteren wrote:
> On Thu, 19 Aug 2010 14:17:53 +0200, Julian Reschke
> <julian.reschke@gmx.de> wrote:
>> Well, the server knows what's supposed to happen.
>>
>> If the server wants you to do a POST to a new URI, and you don't want
>> to do the POST, then doing a GET instead simply is a bug. Incorrect.
>> Wrong. Bad.
>
> It seems you are ignoring the concerns posted here. Not really sure how
> to continue discussing this issue then.

The concern Adam voiced was that using a 307 on an unsafe request has 
interop problems because some browsers (Opera) come up with a 
confirmation dialogue, while others do not.

To this I added that a more severe interop problem is that one browser 
rewrites the method to GET (Safari).

Could you please elaborate what the other concern is? It appears you 
argued that rewriting the method to GET actually is okay. I disagree; if 
the server expects a POST, sending a GET instead doesn't help anybody at 
all. If the server *wanted* to receive a GET request it would have said 
so using 303. Sending a GET instead will probably display something in 
the browser, but will not be what the server expected, and thus, in 
particular, have not the expected *effect*.

I totally agree that we have various problems with both the spec and the 
implementations of 3xx. But can we please stick to those things that 
belong into this category, instead of claiming that what Safari does 
(and what is a severe and long-known bug) suddenly is "okay-ish"?

Best regards, Julian
Received on Thursday, 19 August 2010 12:37:10 GMT

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