xmpp_request_handler.py 文件源码

def _generate_presence_available(self, to, from_, show=None):
    data = _FormData()
    data.add_text('from', from_, 'plain')
    data.add_text('to', to, 'plain')

    # If the "presence" attribute is absent, "available" is assumed and it is
    # not sent by Google Talk.
    presence_element = ElementTree.Element(
        ElementTree.QName('jabber:client', 'presence'),
        {'from': from_, 'to': to})

    if show:  # This is currently a dead code path.
      # The show element is optional according to RFC 3921, 2.2.2.1.
      data.add_text('show', show, 'plain')
      show_element = ElementTree.SubElement(
          presence_element,
          ElementTree.QName('jabber:client', 'show'))
      show_element.text = show

    data.add_text('stanza',
                  ElementTree.tostring(presence_element, 'utf-8'),
                  'xml')
    return data