On 11 June 2018 at 09:47, Klaus Herberth <kl...@jsxc.org> wrote: > Hi everyone, > > I plan to implement XEP-0308 Last Message Correction [1] and I'm asking > myself how I should handle corrections of older messages. The XEP just > says: "While it is possible to use this protocol to correct messages > older than the most recent received from a full JID, such use is out of > scope for this document and support for this SHOULD NOT be assumed without > further negotiation.", but what should I do with such a message? Drop it? > Show it as new message? > I'm surprised nobody said the obvious:
You can correct messages older than the most recent received. The specification simply says you cannot assume *other* implementations will do so, and since the specification declares this "out of scope", this is the dreaded "undefined behaviour". So don't send a correction; or if you do, at least be aware that another implementation might drop it, show it as a new message, or - perhaps - correct the older message. (A survey of existing practise would be interesting here, mind, and if we want a mechanism to negotiate, just add another feature in...) Dave.
_______________________________________________ Standards mailing list Info: https://mail.jabber.org/mailman/listinfo/standards Unsubscribe: standards-unsubscr...@xmpp.org _______________________________________________
