Kombu vs. boto

gistfile1.py

import boto
from kombu import BrokerConnection, Queue


def main():
    queue = Queue("steve-test-kombu")

    with BrokerConnection('sqs://<KEY_ID>@<ACCESS_KEY>:80/') as connection:
        connection.connect()

        queue(connection.channel()).declare()

        with connection.Producer(serializer="raw") as producer:
            producer.publish('hello world')


def boto_main():
    boto_conn = boto.connect_sqs()
    queue = boto_conn.get_queue('steve-test-kombu')
    msg = queue.new_message(body='hello world')
    queue.write(msg)
    boto_conn.close()


if __name__ == '__main__':
    main()
    boto_main() 

Ideally, I'd like main() and boto_main() to produce the exact same message into the queue, but this isn't currently happening. The one from kombu is significantly longer, even though I'm using the 'raw' encoding and no compression...