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Standard implementations of Twisted protocol-related interfaces.
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This will be called before I stop listening on all Ports/Connectors.
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Create an instance of a subclass of Protocol.
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Called when a connection has failed to connect.
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Called when an established connection is lost.
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Factory used by ClientCreator.
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which will fire the L{Deferred} representing this connection attempt.
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Return the pre-constructed protocol instance and arrange to fire the
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Client connections that do not require a factory.
The various connect* methods create a protocol instance using the given
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resulting protocol instance.
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is when there is no shared state between protocol instances, and no need
to reconnect.
The C{connectTCP}, C{connectUNIX}, and C{connectSSL} methods each return a
L{Deferred} which will fire with an instance of the protocol class passed to
L{ClientCreator.__init__}. These Deferred can be cancelled to abort the
connection attempt (in a very unlikely case, cancelling the Deferred may not
prevent the protocol from being instantiated and connected to a transport;
if this happens, it will be disconnected immediately afterwards and the
Deferred will still errback with L{CancelledError}).
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Initiate a connection attempt.
@param method: A callable which will actually start the connection
attempt. For example, C{reactor.connectTCP}.
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factory.
@param kwargs: Keyword arguments to pass to C{method}.
@return: A L{Deferred} which fires with an instance of the protocol
class passed to this L{ClientCreator}'s initializer or fails if the
connection cannot be set up for some reason.
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Connect to a TCP server.
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that the factory parameter is omitted.
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connection cannot be set up for some reason.
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Connect to a Unix socket.
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class passed to this L{ClientCreator}'s initializer or fails if the
connection cannot be set up for some reason.
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Connect to an SSL server.
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that the factory parameter is omitted.
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class passed to this L{ClientCreator}'s initializer or fails if the
connection cannot be set up for some reason.
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Factory which auto-reconnects clients with an exponential back-off.
Note that clients should call my resetDelay method after they have
connected successfully.
@ivar maxDelay: Maximum number of seconds between connection attempts.
@ivar initialDelay: Delay for the first reconnection attempt.
@ivar factor: A multiplicitive factor by which the delay grows
@ivar jitter: Percentage of randomness to introduce into the delay length
to prevent stampeding.
@ivar clock: The clock used to schedule reconnection. It's mainly useful to
be parametrized in tests. If the factory is serialized, this attribute
will not be serialized, and the default value (the reactor) will be
restored when deserialized.
@type clock: L{IReactorTime}
@ivar maxRetries: Maximum number of consecutive unsuccessful connection
attempts, after which no further connection attempts will be made. If
this is not explicitly set, no maximum is applied.
i g �?giW�
�@g6Q�؟�?r Nr$ c �L � | j r|| _ | j � y y rI ��continueTryingr> �retryrA s r rC z0ReconnectingClientFactory.clientConnectionFailed~ � � � � � � &�D�N� �J�J�L� r c �L � | j r|| _ | j � y y rI r{ )r r> �
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Have this connector connect again, after a suitable delay.
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ValueError�retries�
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normalvariate�clock�twisted.internetrJ rR r� )r r> r� rJ s `` r r} z ReconnectingClientFactory.retry� sK �� � �"�"��z�z����+�i�[�0D�E�F� � � ��~�~�%� �!8�9�9� �N�N� � � � ��� � �?�?� &�D�L�L�4�?�?�,J��z�z����9�Y�� � �<U�U�V� �����d�k�k�1�4�=�=�A��
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Put a stop to any attempt to reconnect in progress.
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stopTryingz$ReconnectingClientFactory.stopTrying� se � �
�<�<� �L�L� � � !� �D�L� ��� �>�>�
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Call this method after a successful connection: it resets the delay and
the retry counter.
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resetDelayz$ReconnectingClientFactory.resetDelay� s' � �
�&�&��
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Remove all of the state which is mutated by connection attempts and
failures, returning just the state which describes how reconnections
should be attempted. This will make the unserialized instance
behave just as this one did when it was first instantiated.
)r> r� r� r| r� r� ��__dict__�copy)r �state�keys r � __getstate__z&ReconnectingClientFactory.__getstate__� s> � � �
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Subclass this to indicate that your protocol.Factory is only usable for servers.
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y)� BaseProtocola
This is the abstract superclass of all protocols.
Some methods have helpful default implementations here so that they can
easily be shared, but otherwise the direct subclasses of this class are more
interesting, L{Protocol} and L{ProcessProtocol}.
r N� transportc �@ � d| _ || _ | j � y)z�
Make a connection to a transport and a server.
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connectionMade() callback.
r$ N)� connectedr� �connectionMade�r r� s r �makeConnectionzBaseProtocol.makeConnection� s � � ���"��� ��� r c � � y)a�
Called when a connection is made.
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it is called when the connection is completed. For clients,
this is called once the connection to the server has been
established; for servers, this is called after an accept() call
stops blocking and a socket has been received. If you need to
send any greeting or initial message, do it here.
Nr. r s r r� zBaseProtocol.connectionMade� r/ r ) r r6 r7 r8 r� r� r r r9 r� r� r. r r r� r� � s' � �� �I�&*�I�x�
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�Protocola�
This is the base class for streaming connection-oriented protocols.
If you are going to write a new connection-oriented protocol for Twisted,
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The API is quite simple. Implement L{dataReceived} to handle both
event-based and synchronous input; output can be sent through the
'transport' attribute, which is to be an instance that implements
L{twisted.internet.interfaces.ITransport}. Override C{connectionLost} to be
notified when the connection ends.
Some subclasses exist already to help you write common types of protocols:
see the L{twisted.protocols.basic} module for a few of them.
Nr c �. � | j j S �z~
Return a prefix matching the class name, to identify log messages
related to this protocol instance.
r r s r r! zProtocol.logPrefix% � � �
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callback will be made upon the receipt of each complete protocol
message.
@param data: a string of indeterminate length. Please keep in mind
that you will probably need to buffer some data, as partial
(or multiple) protocol messages may be received! I recommend
that unit tests for protocols call through to this method with
differing chunk sizes, down to one byte at a time.
Nr. �r r� s r � dataReceivedzProtocol.dataReceived, r/ r rB c � � y)z�
Called when the connection is shut down.
Clear any circular references here, and any external references
to this Protocol. The connection has been closed.
@type reason: L{twisted.python.failure.Failure}
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Base process protocol implementation which does simple dispatching for
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Some data was received from stderr.
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This will be called when stdout is closed.
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This will be called when stderr is closed.
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This will be called when the subprocess exits.
@type reason: L{twisted.python.failure.Failure}
Nr. r� s r �
processExitedz ProcessProtocol.processExited� r/ r c � � y)z�
Called when the child process exits and all file descriptors
associated with it have been closed.
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Abstract protocol for datagram-oriented transports, e.g. IP, ICMP, ARP,
UDP.
Nr Tc �D � | j j � }d |d< |S )Nr� r� )r rh s r r� z%AbstractDatagramProtocol.__getstate__� s" � � �M�M� � � �� ��+���r c � � | j s4| j rt j d| z � | j � | j dz | _ y)z�
Make sure startProtocol is called.
This will be called by makeConnection(), users should not call it.
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Make sure stopProtocol is called.
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Called when the transport is disconnected.
Will only be called once, after all ports are disconnected.
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Make a connection to a transport and a server.
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@param addr: tuple of source of datagram.
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Protocol for datagram-oriented transport, e.g. UDP.
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Called due to error from write in connected mode.
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Protocol for connected datagram-oriented transport.
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Called when a datagram is received.
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Called if connecting failed.
Usually this will be due to a DNS lookup failure.
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