text: #!/usr/bin/python
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  #
  from __future__ import print_function
  import sys, optparse
  from proton import *
  
  parser = optparse.OptionParser(usage="usage: %prog [options] <addr_1> ... <addr_n>",
                                 description="simple message receiver")
  parser.add_option("-c", "--certificate", help="path to certificate file")
  parser.add_option("-k", "--private-key", help="path to private key file")
  parser.add_option("-p", "--password", help="password for private key file")
  
  opts, args = parser.parse_args()
  
  if not args:
    args = ["amqp://~0.0.0.0"]
  
  mng = Messenger()
  mng.certificate=opts.certificate
  mng.private_key=opts.private_key
  mng.password=opts.password
  mng.start()
  
  for a in args:
    mng.subscribe(a)
  
  msg = Message()
  while True:
    mng.recv()
    while mng.incoming:
      try:
        mng.get(msg)
      except Exception as e:
        print(e)
      else:
        print(msg.address, msg.subject or "(no subject)", msg.properties, msg.body)
  
  mng.stop()
  