Module pyxmpp.jabber.delay

Delayed delivery mark (jabber:x:delay) handling.

Normative reference:
  - `JEP 91 <http://www.jabber.org/jeps/jep-0091.html>`__

Imported modules:

datetime, libxml2, time

Imported classes:

JID, StanzaPayloadObject

Imported functions:

datetime_local_to_utc, datetime_utc_to_local, from_utf8, get_node_ns_uri, to_utf8

Get the oldest jabber:x:delay elements from the stanza.

:Parameters:
    - `stanza`: a, probably delayed, stanza.
:Types:
    - `stanza`: `pyxmpp.stanza.Stanza`

The return value, if not `None`, contains a quite reliable
timestamp of a delayed (e.g. from offline storage) message.

:return: the oldest delay tag of the stanza or `None`.
:returntype: `Delay`

Get jabber:x:delay elements from the stanza.

:Parameters:
    - `stanza`: a, probably delayed, stanza.
:Types:
    - `stanza`: `pyxmpp.stanza.Stanza`

:return: list of delay tags sorted by the timestamp.
:returntype: `list` of `Delay`