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File: //lib64/python3.6/site-packages/zmq/eventloop/__pycache__/zmqstream.cpython-36.pyc
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d�ZYnXGdd�de�ZdS)z�A utility class to send to and recv from a non-blocking socket,
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.. seealso::

    - :mod:`zmq.asyncio`
    - :mod:`zmq.eventloop.future`

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    Methods:
    
    * **on_recv(callback, copy=True):**
        register a callback to be run every time the socket has something to receive
    * **on_send(callback):**
        register a callback to be run every time you call send
    * **send(self, msg, flags=0, copy=False, callback=None):**
        perform a send that will trigger the callback
        if callback is passed, on_send is also called.
        
        There are also send_multipart(), send_json(), send_pyobj()
    
    Three other methods for deactivating the callbacks:
    
    * **stop_on_recv():**
        turn off the recv callback
    * **stop_on_send():**
        turn off the send callback
    
    which simply call ``on_<evt>(None)``.
    
    The entire socket interface, excluding direct recv methods, is also
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    e.g.
    
    >>> stream.bind is stream.socket.bind
    True
    
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�on_err�szZMQStream.on_errTcCsR|j�|dkst|�st�t|�|_||_|dkrB|jtj�n|j	tj�dS)a�Register a callback for when a message is ready to recv.
        
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        Parameters
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        callback : callable
            callback must take exactly one argument, which will be a
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            if callback is None, recv callbacks are disabled.
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        on_send(None) disables recv event polling.
        
        Parameters
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        callback : callable
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