[Standards] XEP-0198 minor enhancement

Florian Schmaus flo at geekplace.eu
Wed Jun 3 07:35:13 UTC 2015

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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