[zeromq-dev] ZeroMQ and NORM

[Michel Pelletier]

I've found the best way to avoid these kind of problems (version mismatch
with existing system libzmq) is to use a virtual environment and then do a
bundled pyzmq build:

  $ virtualenv foo
  $ . foo/bin/activate
  (foo)$  pip install --install-option --zmq=bundled pyzmq
  (foo)$ python -c 'import zmq; print zmq.zmq_version()'
  4.0.5

It always makes a nice, isolated install.

-Michel

On Wed, Mar 11, 2015 at 10:29 AM, Brian Adamson <brian.adamson at nrl.navy.mil>
wrote:

> As I think MinRF is getting at here, you need to make sure your pyzmq you
> are using is loading the libzmq that you built/installed with the NORM
> extension.  On my systems, I had to download and install pyzmq from source
> code instead of one the prebuilt packages that assumed a dependency on an
> existing libzmq package instead of what you are building yourself.  In a
> nutshell, I built (with norm) and installed the github libzmq and then
> separately downloaded pyzmq and used its “python setup.py install” approach
> to install it from source.  I also had to make sure I didn’t have pyzmq
> installed some other way since you can end up with other packages on your
> systems that want to install pyzmq in a standard way since they have their
> own dependencies upon it.
>
> Note the current GitHub libzmq is 4.2.0.  If your system is reporting
> version 3.2.5, it’s likely you have a conflicting (without norm and hence
> the error) version of libzmq installed that pyzmq is finding instead of the
> one you want.
>
> best regards,
>
> Brian
>
>
>
> On Mar 11, 2015, at 12:54 PM, MinRK <benjaminrk at gmail.com> wrote:
>
> How did you install pyzmq? What OS is this?
>
> -MinRK
>
> On Wed, Mar 11, 2015 at 7:03 AM, Adam Najman <najman at gmail.com> wrote:
>
>> I'm trying to establish a NORM connection using ZeroMQ as detailed here:
>>
>> http://zeromq.org/topics:norm-protocol-transport
>>
>> I've already built NORM and ZeroMQ with support for norm using
>> ./configure –with-norm=/path/to/norm.
>>
>> The code I'm trying is as follows:
>>
>> #Subscriberimport zmq
>> context = zmq.Context()
>> socket = context.socket(zmq.SUB)
>> socket.bind("norm://224.1.2.3:5556")
>> socket.setsockopt(zmq.SUBSCRIBE, "ZMQ-Test")while True:
>>     string = socket.recv()
>>     print string
>> #Publisherimport zmqimport time
>> context = zmq.Context()
>> socket = context.socket(zmq.PUB)
>> socket.connect("norm://224.1.2.3:5556")
>> i = 1while True:
>>     topic = "ZMQ-Test"
>>     message = "Hello, NORM " + str(i) + " …"
>>     socket.send("%s %s" % (topic, message))
>>     i += 1
>>     time.sleep(1)
>>
>> Whenever I run either of these, I get an error message:
>>
>> Traceback (most recent call last):
>>   File "pub.py", line 5, in <module>
>>     socket.connect("norm://224.1.2.3:5556")
>>   File "zmq/backend/cython/socket.pyx", line 471, in zmq.backend.cython.socket.Socket.connect (zmq/backend/cython/socket.c:4295)
>> zmq.error.ZMQError: Protocol not supported
>>
>> I've tried re-installing everything and building everything from scratch,
>> including NORM ZeroMQ and PyZMQ. Can anyone help with this issue? Python
>> Version: 2.7.9 NORM Version: 1.5b4 ZeroMQ Version: 3.2.5
>>
>> _______________________________________________
>> zeromq-dev mailing list
>> zeromq-dev at lists.zeromq.org
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>
>>
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