class documentation

class twisted.internet.tcp.Port(base.BasePort, _SocketCloser): (source)

Known subclasses: twisted.internet.ssl.Port, twisted.internet.unix.Port

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A TCP server port, listening for connections.

When a connection is accepted, this will call a factory's buildProtocol with the incoming address as an argument, according to the specification described in twisted.internet.interfaces.IProtocolFactory.

If you wish to change the sort of transport that will be used, the transport attribute will be called with the signature expected for Server.__init__, so it can be replaced.

Instance Variable deferred a deferred created when stopListening is called, and that will fire when connection is lost. This is not to be used it directly: prefer the deferred returned by stopListening instead.
Instance Variable disconnecting flag indicating that the stopListening method has been called and that no connections should be accepted anymore.
Instance Variable connected flag set once the listen has successfully been called on the socket.
Instance Variable sessionno Undocumented
Instance Variable interface Undocumented
Instance Variable backlog Undocumented
Method __init__ Initialize with a numeric port to listen on.
Instance Variable port Undocumented
Instance Variable factory Undocumented
Instance Variable addressFamily Undocumented
Method __repr__ Undocumented
Method createInternetSocket Undocumented
Method startListening Create and bind my socket, and begin listening on it.
Instance Variable socket Undocumented
Instance Variable numberAccepts Undocumented
Method doRead Called when my socket is ready for reading.
Method loseConnection Stop accepting connections on this port.
Method connectionLost Cleans up the socket.
Method logPrefix Returns the name of my class, to prefix log entries with.
Method getHost Return an IPv4Address or IPv6Address indicating the listening address of this port.
Instance Variable _type A string describing the connections which will be created by this port. Normally this is "TCP", since this is a TCP port, but when the TLS implementation re-uses this class it overrides the value with "TLS". Only used for logging.
Instance Variable _preexistingSocket If not None, a socket.socket instance which was created and initialized outside of the reactor and will be used to listen for connections (instead of a new socket being created by this Port).
Instance Variable _realPortNumber Undocumented
Class Variable _logger Undocumented
Instance Variable _addressType Undocumented
Class Method _fromListeningDescriptor Create a new Port based on an existing listening SOCK_STREAM socket.
Instance Variable _shouldShutdown Undocumented
Method _buildAddr Undocumented
Method _logConnectionLostMsg Log message for closing port

Inherited from BasePort:

Class Variable socketType Undocumented
Method doWrite Raises a RuntimeError

Inherited from FileDescriptor (via BasePort):

Instance Variable disconnected Undocumented
Instance Variable dataBuffer Undocumented
Instance Variable offset Undocumented
Class Variable SEND_LIMIT Undocumented
Instance Variable reactor Undocumented
Instance Variable producer Undocumented
Method writeSomeData Write as much as possible of the given data, immediately.
Instance Variable producerPaused Undocumented
Method writeConnectionLost Undocumented
Method readConnectionLost Undocumented
Method getPeer Undocumented
Method write Reliably write some data.
Method writeSequence Reliably write a sequence of data.
Method loseWriteConnection Undocumented
Method stopReading Stop waiting for read availability.
Method stopWriting Stop waiting for write availability.
Method startReading Start waiting for read availability.
Method startWriting Start waiting for write availability.
Class Variable bufferSize Undocumented
Method stopConsuming Stop consuming data.
Method resumeProducing Undocumented
Method pauseProducing Undocumented
Method stopProducing Undocumented
Method fileno File Descriptor number for select().
Instance Variable _writeDisconnecting Undocumented
Instance Variable _writeDisconnected Undocumented
Instance Variable _tempDataBuffer Undocumented
Instance Variable _tempDataLen Undocumented
Method _postLoseConnection Called after a loseConnection(), when all data has been written.
Method _closeWriteConnection Undocumented
Method _isSendBufferFull Determine whether the user-space send buffer for this transport is full or not.
Method _maybePauseProducer Possibly pause a producer, if there is one and the send buffer is full.

Inherited from _ConsumerMixin (via BasePort, FileDescriptor):

Instance Variable streamingProducer bool or int
Method registerProducer Register to receive data from a producer.
Method unregisterProducer Stop consuming data from a producer, without disconnecting.

Inherited from _LogOwner (via BasePort, FileDescriptor):

Method _getLogPrefix Determine the log prefix to use for messages related to applicationObject, which may or may not be an interfaces.ILoggingContext provider.

Inherited from _SocketCloser:

Method _closeSocket Undocumented
deferred = (source)
a deferred created when stopListening is called, and that will fire when connection is lost. This is not to be used it directly: prefer the deferred returned by stopListening instead.
(type: defer.Deferred)
disconnecting = (source)
flag indicating that the stopListening method has been called and that no connections should be accepted anymore.
(type: bool)
connected = (source)
flag set once the listen has successfully been called on the socket.
(type: bool)
_type = (source)
A string describing the connections which will be created by this port. Normally this is "TCP", since this is a TCP port, but when the TLS implementation re-uses this class it overrides the value with "TLS". Only used for logging.
(type: str)
_preexistingSocket = (source)
If not None, a socket.socket instance which was created and initialized outside of the reactor and will be used to listen for connections (instead of a new socket being created by this Port).
sessionno = (source)

Undocumented

interface = (source)

Undocumented

backlog = (source)

Undocumented

_realPortNumber = (source)

Undocumented

_logger = (source)

Undocumented

def __init__(self, port, factory, backlog=50, interface='', reactor=None): (source)

Initialize with a numeric port to listen on.

port = (source)

Undocumented

factory = (source)

Undocumented

addressFamily = (source)
_addressType = (source)

Undocumented

@classmethod
def _fromListeningDescriptor(cls, reactor, fd, addressFamily, factory): (source)

Create a new Port based on an existing listening SOCK_STREAM socket.

Arguments are the same as to Port.__init__, except where noted.

ParametersreactorUndocumented
fdAn integer file descriptor associated with a listening socket. The socket must be in non-blocking mode. Any additional attributes desired, such as FD_CLOEXEC, must also be set already.
addressFamilyThe address family (sometimes called domain) of the existing socket. For example, socket.AF_INET.
factoryUndocumented
ReturnsA new instance of cls wrapping the socket given by fd.
def __repr__(self): (source)

Undocumented

ReturnsUndocumented (type: str)
def createInternetSocket(self): (source)
def startListening(self): (source)

Create and bind my socket, and begin listening on it.

This is called on unserialization, and must be called after creating a server to begin listening on the specified port.

_shouldShutdown = (source)
socket = (source)

Undocumented

numberAccepts = (source)

Undocumented

def _buildAddr(self, address): (source)

Undocumented

def doRead(self): (source)

Called when my socket is ready for reading.

This accepts a connection and calls self.protocol() to handle the wire-level protocol.

def loseConnection(self, connDone=failure.Failure(main.CONNECTION_DONE)): (source)

Stop accepting connections on this port.

This will shut down the socket and call self.connectionLost(). It returns a deferred which will fire successfully when the port is actually closed, or with a failure if an error occurs shutting down.

def _logConnectionLostMsg(self): (source)

Log message for closing port

def connectionLost(self, reason): (source)
def logPrefix(self): (source)

Returns the name of my class, to prefix log entries with.

def getHost(self): (source)

Return an IPv4Address or IPv6Address indicating the listening address of this port.

API Documentation for Twisted, generated by pydoctor 20.12.1 at 2021-02-28 19:53:36.