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S)zAbstract Protocol base classes.)�BaseProtocol�Protocol�DatagramProtocol�SubprocessProtocol�BufferedProtocolc�.�eZdZdZdZd�Zd�Zd�Zd�ZdS)raCommon base class for protocol interfaces.

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        buffer size reaches the low-water mark.

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        pause_writing() is not called -- it must go strictly over.
        Conversely, resume_writing() is called when the buffer size is
        equal or lower than the low-water mark.  These end conditions
        are important to ensure that things go as expected when either
        mark is zero.

        NOTE: This is the only Protocol callback that is not called
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pause_writingzBaseProtocol.pause_writing%rrc��dS)zvCalled when the transport's buffer drains below the low-water mark.

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data_receivedzProtocol.data_received^rrc��dS�z�Called when the other end calls write_eof() or equivalent.

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    State machine of calls:

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        *sizehint* is a recommended minimal size for the returned
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get_bufferzBufferedProtocol.get_buffer�rrc��dS)z�Called when the buffer was updated with the received data.

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