#!/usr/bin/env python
import pika

url = os.environ.get('QUEUE_URL')
params = pika.URLParameters(url)
params.socket_timeout = 5

connection = pika.BlockingConnection(params)
channel = connection.channel()

channel.queue_declare(queue='hello')

def callback(ch, method, properties, body):
   print(" [x] Received %r" % body)

channel.basic_consume(callback,
                  queue='hello',
                  no_ack=True)

print(' [*] Waiting for messages. To exit press CTRL+C')
channel.start_consuming()

pika.exceptions.ProbableAuthenticationError