POST/PUT still don't contain enough semantics to deal with side-effect operations that are transactions. In order to allow for real transactions via HTTP, we need a transaction protocol. Clients need to be able to determine, when they've pushed the 'stop' button, whether or not the transaction was completed. None of the current mechanisms implement this. Without transactions, we might want verifiers: PUT-IF-NOT-MODIFIED-SINCE i.e., you see a web document, edit it, and do a PUT, but ... if the thing was edited since you got it last, then you don't just overwrite the old one.Received on Friday, 19 May 1995 14:06:41 UTC
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