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POST Once Exactly

Mark Nottingham has evolved Click Submit Only Once as I-D. here's the abstract:

"This specification describes a pattern of use that allows HTTP clients to automatically retry POST requests in a manner that assures no unintended side effects will take place, and defines mechanisms to allow implementations to automatically determine when such patterns are supported." -draft-nottingham-http-poe-00

At first glance, it looks good. Mark's using headers to call out POE aware resources. I hope that every web framework on the planet will support POE - it's a must-have for forms submission.

March 21, 2005 09:15 PM


Geert Bevin
(March 22, 2005 07:03 AM #)

It seems that this is only one side of the problem. Just returning 405 Method Not Allowed renders a blank page in every browser I tested it with. For most people this will just confuse the hell out of them and they will not know how to proceed. Unless every browser supports the POE headers correctly, there's not much sense using this on the server-side.

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