Viewing File: /opt/alt/python-internal/lib64/python3.11/asyncio/__pycache__/protocols.cpython-311.opt-1.pyc



!A?h-dZdZGddZGddeZGddeZGdd	eZGd
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S)zAbstract Protocol base classes.)BaseProtocolProtocolDatagramProtocolSubprocessProtocolBufferedProtocolc.eZdZdZdZdZdZdZdZdS)raCommon base class for protocol interfaces.

    Usually user implements protocols that derived from BaseProtocol
    like Protocol or ProcessProtocol.

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    cdS)zCalled when a connection is made.

        The argument is the transport representing the pipe connection.
        To receive data, wait for data_received() calls.
        When the connection is closed, connection_lost() is called.
        Nr)self	transports  >/opt/alt/python-internal/lib64/python3.11/asyncio/protocols.pyconnection_madezBaseProtocol.connection_madecdS)zCalled when the connection is lost or closed.

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excs  rconnection_lostzBaseProtocol.connection_lostrrcdS)aCalled when the transport's buffer goes over the high-water mark.

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        more), and eventually resume_writing() is called once when the
        buffer size reaches the low-water mark.

        Note that if the buffer size equals the high-water mark,
        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%rrcdS)zvCalled when the transport's buffer drains below the low-water mark.

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rrrrrrrr	saI,rrc"eZdZdZdZdZdZdS)ranInterface for stream protocol.

    The user should implement this interface.  They can inherit from
    this class but don't need to.  The implementations here do
    nothing (they don't raise exceptions).

    When the user wants to requests a transport, they pass a protocol
    factory to a utility function (e.g., EventLoop.create_connection()).

    When the connection is made successfully, connection_made() is
    called with a suitable transport object.  Then data_received()
    will be called 0 or more times with data (bytes) received from the
    transport; finally, connection_lost() will be called exactly once
    with either an exception object or None as an argument.

    State machine of calls:

      start -> CM [-> DR*] [-> ER?] -> CL -> end

    * CM: connection_made()
    * DR: data_received()
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    rcdS)zTCalled when some data is received.

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data_receivedzProtocol.data_received^rrcdSzCalled when the other end calls write_eof() or equivalent.

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    Event methods, such as `create_server` and `create_connection`,
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    The idea of BufferedProtocol is that it allows to manually allocate
    and control the receive buffer.  Event loops can then use the buffer
    provided by the protocol to avoid unnecessary data copies.  This
    can result in noticeable performance improvement for protocols that
    receive big amounts of data.  Sophisticated protocols can allocate
    the buffer only once at creation time.

    State machine of calls:

      start -> CM [-> GB [-> BU?]]* [-> ER?] -> CL -> end

    * CM: connection_made()
    * GB: get_buffer()
    * BU: buffer_updated()
    * ER: eof_received()
    * CL: connection_lost()
    rcdS)aPCalled to allocate a new receive buffer.

        *sizehint* is a recommended minimal size for the returned
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get_bufferzBufferedProtocol.get_bufferrrcdS)zCalled when the buffer was updated with the received data.

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nbytess  rbuffer_updatedzBufferedProtocol.buffer_updatedrrcdSr#rrs rr$zBufferedProtocol.eof_receivedrrN)rrrrrr(r+r$rrrrrmsR.I			rrc"eZdZdZdZdZdZdS)rz Interface for datagram protocol.rcdS)z&Called when some datagram is received.Nr)r
r addrs   rdatagram_receivedz"DatagramProtocol.datagram_receivedrrcdS)z~Called when a send or receive operation raises an OSError.

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        Nrrs  rerror_receivedzDatagramProtocol.error_receivedrrN)rrrrrr0r2rrrrrs=**I555rrc(eZdZdZdZdZdZdZdS)rz,Interface for protocol for subprocess calls.rcdS)zCalled when the subprocess writes data into stdout/stderr pipe.

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fdr s   rpipe_data_receivedz%SubprocessProtocol.pipe_data_receivedrrcdS)zCalled when a file descriptor associated with the child process is
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r5rs   rpipe_connection_lostz'SubprocessProtocol.pipe_connection_lostrrcdS)z"Called when subprocess has exited.Nrrs rprocess_exitedz!SubprocessProtocol.process_exitedrrN)rrrrrr6r8r:rrrrrsL66I11111rrc\t|}|r||}t|}|std||kr||d|<||dS|d||d|<||||d}t|}|dSdS)Nz%get_buffer() returned an empty buffer)lenr(RuntimeErrorr+)protor data_lenbufbuf_lens     r_feed_data_to_buffered_protorBs4yyH
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