text: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
      SleekXMPP: The Sleek XMPP Library
      Copyright (C) 2010  Nathanael C. Fritz
      This file is part of SleekXMPP.
  
      See the file LICENSE for copying permission.
  """
  
  import sys
  import logging
  import time
  from optparse import OptionParser
  
  import sleekxmpp
  
  # Python versions before 3.0 do not use UTF-8 encoding
  # by default. To ensure that Unicode is handled properly
  # throughout SleekXMPP, we will set the default encoding
  # ourselves to UTF-8.
  if sys.version_info < (3, 0):
      reload(sys)
      sys.setdefaultencoding('utf8')
  
  
  class EchoBot(sleekxmpp.ClientXMPP):
  
      """
      A simple SleekXMPP bot that will echo messages it
      receives, along with a short thank you message.
      """
  
      def __init__(self, jid, password):
          sleekxmpp.ClientXMPP.__init__(self, jid, password)
  
          # The session_start event will be triggered when
          # the bot establishes its connection with the server
          # and the XML streams are ready for use. We want to
          # listen for this event so that we we can intialize
          # our roster.
          self.add_event_handler("session_start", self.start)
  
          # The message event is triggered whenever a message
          # stanza is received. Be aware that that includes
          # MUC messages and error messages.
          self.add_event_handler("message", self.message)
  
      def start(self, event):
          """
          Process the session_start event.
  
          Typical actions for the session_start event are
          requesting the roster and broadcasting an intial
          presence stanza.
  
          Arguments:
              event -- An empty dictionary. The session_start
                       event does not provide any additional
                       data.
          """
          self.getRoster()
          self.sendPresence()
  
      def message(self, msg):
          """
          Process incoming message stanzas. Be aware that this also
          includes MUC messages and error messages. It is usually
          a good idea to check the messages's type before processing
          or sending replies.
  
          Arguments:
              msg -- The received message stanza. See the documentation
                     for stanza objects and the Message stanza to see
                     how it may be used.
          """
          msg.reply("Thanks for sending\n%(body)s" % msg).send()
  
  
  if __name__ == '__main__':
      # Setup the command line arguments.
      optp = OptionParser()
  
      # Output verbosity options.
      optp.add_option('-q', '--quiet', help='set logging to ERROR',
                      action='store_const', dest='loglevel',
                      const=logging.ERROR, default=logging.INFO)
      optp.add_option('-d', '--debug', help='set logging to DEBUG',
                      action='store_const', dest='loglevel',
                      const=logging.DEBUG, default=logging.INFO)
      optp.add_option('-v', '--verbose', help='set logging to COMM',
                      action='store_const', dest='loglevel',
                      const=5, default=logging.INFO)
  
      # JID and password options.
      optp.add_option("-j", "--jid", dest="jid",
                      help="JID to use")
      optp.add_option("-p", "--password", dest="password",
                      help="password to use")
  
      opts, args = optp.parse_args()
  
      # Setup logging.
      logging.basicConfig(level=opts.loglevel,
                          format='%(levelname)-8s %(message)s')
  
      # Setup the EchoBot and register plugins. Note that while plugins may
      # have interdependencies, the order in which you register them does
      # not matter.
      xmpp = EchoBot(opts.jid, opts.password)
      xmpp.registerPlugin('xep_0030') # Service Discovery
      xmpp.registerPlugin('xep_0004') # Data Forms
      xmpp.registerPlugin('xep_0060') # PubSub
      xmpp.registerPlugin('xep_0199') # XMPP Ping
  
      # Connect to the XMPP server and start processing XMPP stanzas.
      if xmpp.connect():
          # If you do not have the pydns library installed, you will need
          # to manually specify the name of the server if it does not match
          # the one in the JID. For example, to use Google Talk you would
          # need to use:
          #
          # if xmpp.connect(('talk.google.com', 5222)):
          #     ...
          xmpp.process(threaded=False)
          print("Done")
      else:
          print("Unable to connect.")
  