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diff --git a/sleekxmpp/plugins/xep_0184/receipt.py b/sleekxmpp/plugins/xep_0184/receipt.py
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+"""
+ SleekXMPP: The Sleek XMPP Library
+ Copyright (C) 2012 Erik Reuterborg Larsson, Nathanael C. Fritz
+ This file is part of SleekXMPP.
+
+ See the file LICENSE for copying permission.
+"""
+
+import logging
+
+from sleekxmpp.stanza import Message
+from sleekxmpp.xmlstream import register_stanza_plugin
+from sleekxmpp.xmlstream.handler import Callback
+from sleekxmpp.xmlstream.matcher import StanzaPath
+from sleekxmpp.plugins import BasePlugin
+from sleekxmpp.plugins.xep_0184 import stanza, Request, Received
+
+
+class XEP_0184(BasePlugin):
+
+ """
+ XEP-0184: Message Delivery Receipts
+ """
+
+ name = 'xep_0184'
+ description = 'XEP-0184: Message Delivery Receipts'
+ dependencies = set(['xep_0030'])
+ stanza = stanza
+
+ ack_types = ('normal', 'chat', 'headline')
+
+ def plugin_init(self):
+ self.auto_ack = self.config.get('auto_ack', True)
+ self.auto_request = self.config.get('auto_request', False)
+
+ register_stanza_plugin(Message, Request)
+ register_stanza_plugin(Message, Received)
+
+ self.xmpp.add_filter('out', self._filter_add_receipt_request)
+
+ self.xmpp.register_handler(
+ Callback('Message Receipt',
+ StanzaPath('message/receipt'),
+ self._handle_receipt_received))
+
+ self.xmpp.register_handler(
+ Callback('Message Receipt Request',
+ StanzaPath('message/request_receipt'),
+ self._handle_receipt_request))
+
+ self.xmpp['xep_0030'].add_feature('urn:xmpp:receipts')
+
+ def ack(self, msg):
+ """
+ Acknowledge a message by sending a receipt.
+
+ Arguments:
+ msg -- The message to acknowledge.
+ """
+ ack = self.xmpp.Message()
+ ack['to'] = msg['from']
+ ack['from'] = msg['to']
+ ack['receipt'] = msg['id']
+ ack['id'] = self.xmpp.new_id()
+ ack.send()
+
+ def _handle_receipt_received(self, msg):
+ self.xmpp.event('receipt_received', msg)
+
+ def _handle_receipt_request(self, msg):
+ """
+ Auto-ack message receipt requests if ``self.auto_ack`` is ``True``.
+
+ Arguments:
+ msg -- The incoming message requesting a receipt.
+ """
+ if self.auto_ack:
+ if msg['type'] in self.ack_types:
+ if not msg['receipt']:
+ self.ack(msg)
+
+ def _filter_add_receipt_request(self, stanza):
+ """
+ Auto add receipt requests to outgoing messages, if:
+
+ - ``self.auto_request`` is set to ``True``
+ - The message is not for groupchat
+ - The message does not contain a receipt acknowledgment
+ - The recipient is a bare JID or, if a full JID, one
+ that has the ``urn:xmpp:receipts`` feature enabled
+
+ The disco cache is checked if a full JID is specified in
+ the outgoing message, which may mean a round-trip disco#info
+ delay for the first message sent to the JID if entity caps
+ are not used.
+ """
+
+ if not self.auto_request:
+ return stanza
+
+ if not isinstance(stanza, Message):
+ return stanza
+
+ if stanza['request_receipt']:
+ return stanza
+
+ if not stanza['type'] in self.ack_types:
+ return stanza
+
+ if stanza['receipt']:
+ return stanza
+
+ if stanza['to'].resource:
+ if not self.xmpp['xep_0030'].supports(stanza['to'],
+ feature='urn:xmpp:receipts',
+ cached=True):
+ return stanza
+
+ stanza['request_receipt'] = True
+ return stanza