[rabbitmq-discuss] Pika IncompatibleProtocolError

[Simon MacMullen]

Hmm. I'm no Pika expert but that seems wrong. Is there anything 
interesting-looking in the server logs at that point?

Cheers, Simon

On 05/04/13 03:51, William Daly wrote:
> Hi,
>
> I'm trying to use rabbitmq and pika on localhost for testing purposes,
> and I am receiving an IncompatibleProtocolError.
>
> Here are the steps I'm following:
>
> 1) I start up rabbitmq-server, and when I run rabbitmqctl status I get:
> Status of node rabbit at localhost ...
> [{pid,390},
>   {running_applications,
>       [{rabbitmq_management_visualiser,"RabbitMQ Visualiser","3.0.4"},
>        {rabbitmq_management,"RabbitMQ Management Console","3.0.4"},
>        {rabbitmq_management_agent,"RabbitMQ Management Agent","3.0.4"},
>        {rabbit,"RabbitMQ","3.0.4"},
>        {os_mon,"CPO  CXC 138 46","2.2.10"},
>        {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.0.4"},
>        {webmachine,"webmachine","1.9.1-rmq3.0.4-git52e62bc"},
>        {mochiweb,"MochiMedia Web Server","2.3.1-rmq3.0.4-gitd541e9a"},
>        {xmerl,"XML parser","1.3.2"},
>        {inets,"INETS  CXC 138 49","5.9.2"},
>        {mnesia,"MNESIA  CXC 138 12","4.7.1"},
>        {amqp_client,"RabbitMQ AMQP Client","3.0.4"},
>        {sasl,"SASL  CXC 138 11","2.2.1"},
>        {stdlib,"ERTS  CXC 138 10","1.18.3"},
>        {kernel,"ERTS  CXC 138 10","2.15.3"}]},
>   {os,{unix,darwin}},
>   {erlang_version,
>       "Erlang R15B03 (erts-5.9.3.1) [source] [64-bit] [smp:8:8]
> [async-threads:30] [hipe] [kernel-poll:true] [dtrace]\n"},
>   {memory,
>       [{total,35653280},
>        {connection_procs,5696},
>        {queue_procs,27576},
>        {plugins,152984},
>        {other_proc,9868108},
>        {mnesia,62360},
>        {mgmt_db,47384},
>        {msg_index,22960},
>        {other_ets,1239568},
>        {binary,522528},
>        {code,18264216},
>        {atom,695185},
>        {other_system,4744715}]},
>   {vm_memory_high_watermark,0.4},
>   {vm_memory_limit,6523774566},
>   {disk_free_limit,1000000000},
>   {disk_free,199230787584},
>   {file_descriptors,
>
>   [{total_limit,156},{total_used,4},{sockets_limit,138},{sockets_used,1}]},
>   {processes,[{limit,1048576},{used,196}]},
>   {run_queue,0},
>   {uptime,2667}]
> ...done.
>
> 2) I run the following code (RABBITMQ_USER='guest',
> RABBITMQ_PASS='guest', RABBIT_HOST='localhost')
>
> credentials = pika.PlainCredentials(settings.RABBITMQ_USER,
>                                              settings.RABBITMQ_PASS)
> parameters = pika.ConnectionParameters(heartbeat_interval=5,
>                                                 credentials=credentials,
>                                                 host=settings.RABBIT_HOST)
> self.channel = None
> self.connection = pika.SelectConnection(parameters, self.on_connected)
>
> # ....
>
> self.connection.ioloop.start()
>
> 3) I get the following traceback:
>
> Traceback (most recent call last):
>    File
> "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/process.py",
> line 258, in _bootstrap
>      self.run()
>    File "/Users/will/queue/consumer.py", line 237, in run
>      self.connection.ioloop.start()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/select_connection.py",
> line 108, in start
>      self.poller.start()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/select_connection.py",
> line 336, in start
>      self.poll()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/select_connection.py",
> line 351, in poll
>      return self._handler(self.fileno, ERROR, error)
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/base_connection.py",
> line 315, in _handle_events
>      self._handle_error(error)
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/base_connection.py",
> line 291, in _handle_error
>      self._handle_disconnect()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/base_connection.py",
> line 240, in _handle_disconnect
>      self._adapter_disconnect()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/base_connection.py",
> line 131, in _adapter_disconnect
>      self._check_state_on_disconnect()
>    File
> "/Users/will/python/lib/python2.7/site-packages/pika-0.9.13p0-py2.7.egg/pika/adapters/base_connection.py",
> line 143, in _check_state_on_disconnect
>      raise exceptions.IncompatibleProtocolError
> IncompatibleProtocolError
>
> Any idea what could be causing this?  I'm running Mac OS X Mountain
> Lion.  Any help would be greatly appreciated.
>
> Thanks!
> -- Will
>
>
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>


-- 
Simon MacMullen
RabbitMQ, VMware