[zeromq-dev] czmq python binding Zpoller

[Arnaud Loonstra]

On 2015-11-05 02:50, Johan Philips wrote:
> How can I get the actual socket out of it, because Zpoller seems to
> return a c_void_p which I cannot compare to my Zsock object I added 
> to
> the poller.
>
> Minimal example using zyre nodes:
> Python 2.7.9 (default, Apr  2 2015, 15:33:21)
> [GCC 4.9.2] on linux2
> Type "help", "copyright", "credits" or "license" for more 
> information.
>  >>> from zyre import Zyre
>  >>> from czmq import Zsock, Zpoller
>  >>> n1 = Zyre("n1")
>  >>> n2 = Zyre("n2")
>  >>> n1.start()
> 0
>  >>> n2.start()
> 0
>  >>> poller = Zpoller(n1.socket(),n2.socket(), None)
>  >>> sock = poller.wait(100)
>  >>> print sock
> c_void_p(27301232)
>  >>> print n1.socket(), n2.socket()
> <czmq.Zsock object at 0x7fbd0968cfd0> <czmq.Zsock object at 
> 0x7fbd0968cfd0>
>  >>>
>
> Do I need to add cast or POINTER or is there a more convenient way?
> Zsock(result, True) does not work since it will create a new object.
>
> Thanks!
>
> Johan

I haven't found the best approach yet. First of all you can use 
ZyreEvents. See the test.py file for an example.
I've used the zyre binding with PyZMQ. I had to wrap the binding to 
cast the pointer to a PyZMQ socket object. I don't have the code here so 
can't provide how it is done. I might have posted it on this ML though.

I haven't used CZMQ for this.... yet. I'd need to look into this.

Perhaps some else knows a better way because indeed it is essential.

Rg,

Arnaud