On 03.06.2015 01:48, John Williams (johnwi3) wrote: > Thanks for the clarification. > Hum,.. not sure how useful this is, since a lot of stanzas are of little long > term interest (eg: chatstates), but as you describe it seems pretty harmless.
Consider the "XMPP user walks into the subway without GSM reception" scenario which leads to a <failed/> once the user's device is back online. Without 'h' in <failed/> the client is unable to tell which messages have been received by the server right before the signal was lost. With 'h', the client is able to display some more visual feedback about the state of outgoing messages. tl;dr: It's useful for mobile clients if you slightly missed the max resumption time. - Florian
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