> Just to elaborate on that, as already stated in the HTTP/1.1 draft, > only the server (actually, in the case of FORMs with METHOD=POST, its CGI > script) can determine if a POST is idempotent, based on how the content > entity in the request is handled by the server/script. Therefore, it is > important (IMHO) that the HTTP protocol provide for an Idempotent reply > header by which the client can be informed if the POST was idempotent > ("yes"), with the default remaining "no". You are talking about establishing a relationship between the content of the current response and a resource (identified by a URL) which corresponds to the meaning of the original POST request, such that the original request can be repeated in a safe manner. Use Link: <http://site/that_resource>; rel=source for supplying such a relationship. ...Roy T. Fielding Department of Information & Computer Science (fielding@ics.uci.edu) University of California, Irvine, CA 92697-3425 fax:+1(714)824-4056 http://www.ics.uci.edu/~fielding/Received on Tuesday, 1 October 1996 18:40:46 UTC
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