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dd�Zedd��Zedd��ZdS)�Timeouta� Timeout configuration.

    Timeouts can be defined as a default for a pool::

        timeout = Timeout(connect=2.0, read=7.0)
        http = PoolManager(timeout=timeout)
        response = http.request('GET', 'http://example.com/')

    Or per-request (which overrides the default for the pool)::

        response = http.request('GET', 'http://example.com/', timeout=Timeout(10))

    Timeouts can be disabled by setting all the parameters to ``None``::

        no_timeout = Timeout(connect=None, read=None)
        response = http.request('GET', 'http://example.com/, timeout=no_timeout)


    :param total:
        This combines the connect and read timeouts into one; the read timeout
        will be set to the time leftover from the connect attempt. In the
        event that both a connect timeout and a total are specified, or a read
        timeout and a total are specified, the shorter timeout will be applied.

        Defaults to None.

    :type total: integer, float, or None

    :param connect:
        The maximum amount of time to wait for a connection attempt to a server
        to succeed. Omitting the parameter will default the connect timeout to
        the system default, probably `the global default timeout in socket.py
        <http://hg.python.org/cpython/file/603b4d593758/Lib/socket.py#l535>`_.
        None will set an infinite timeout for connection attempts.

    :type connect: integer, float, or None

    :param read:
        The maximum amount of time to wait between consecutive
        read operations for a response from the server. Omitting
        the parameter will default the read timeout to the system
        default, probably `the global default timeout in socket.py
        <http://hg.python.org/cpython/file/603b4d593758/Lib/socket.py#l535>`_.
        None will set an infinite timeout.

    :type read: integer, float, or None

    .. note::

        Many factors can affect the total amount of time for urllib3 to return
        an HTTP response.

        For example, Python's DNS resolver does not obey the timeout specified
        on the socket. Other factors that can affect total request time include
        high CPU load, high swap, the program running at a low priority level,
        or other behaviors.

        In addition, the read and total timeouts only measure the time between
        read operations on the socket connecting the client and the server,
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        response. For most requests, the timeout is raised because the server
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        the case; if a server streams one byte every fifteen seconds, a timeout
        of 20 seconds will not trigger, even though the request will take
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Timeout.clonecCs |jdk	rtd��t�|_|jS)z� Start the timeout clock, used during a connect() attempt

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zTimeout.start_connectcCs|jdkrtd��t�|jS)a Gets the time elapsed since the call to :meth:`start_connect`.

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zTimeout.get_connect_durationcCs:|jdkr|jS|jdks&|j|jkr,|jSt|j|j�S)a" Get the value to use when setting a connection timeout.

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        This assumes some time has elapsed in the connection timeout and
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        established, a :exc:`~urllib3.exceptions.TimeoutStateError` will be
        raised.

        :return: Value to use for the read timeout.
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