twisted.protocols.basic.IntNStringReceiver

class documentation

class IntNStringReceiver(protocol.Protocol, _PauseableMixin): (source)

Known subclasses: twisted.protocols.basic.Int16StringReceiver, twisted.protocols.basic.Int32StringReceiver, twisted.protocols.basic.Int8StringReceiver

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Generic class for length prefixed protocols.

Method dataReceived Convert int prefixed strings into calls to stringReceived.
Method lengthLimitExceeded Callback invoked when a length prefix greater than MAX_LENGTH is received. The default implementation disconnects the transport. Override this.
Method sendString Send a prefixed string to the other end of the connection.
Method stringReceived Override this for notification when each complete string is received.
Constant MAX_LENGTH Undocumented
Class Variable recvd Undocumented
Instance Variable prefixLength length of the prefix, in bytes. Define it in subclass, using struct.calcsize(structFormat)
Instance Variable structFormat format used for struct packing/unpacking. Define it in subclass.
Instance Variable _compatibilityOffset the offset within _unprocessed to the next message to be parsed. (used to generate the recvd attribute)
Instance Variable _unprocessed bytes received, but not yet broken up into messages / sent to stringReceived. _compatibilityOffset must be updated when this value is updated so that the recvd attribute can be generated correctly.

Inherited from Protocol:

Method connectionLost Called when the connection is shut down.
Method logPrefix Return a prefix matching the class name, to identify log messages related to this protocol instance.
Class Variable factory Undocumented

Inherited from BaseProtocol (via Protocol):

Method connectionMade Called when a connection is made.
Method makeConnection Make a connection to a transport and a server.
Instance Variable connected Undocumented
Instance Variable transport Undocumented

Inherited from _PauseableMixin (via Protocol, BaseProtocol):

Method pauseProducing Undocumented
Method resumeProducing Undocumented
Method stopProducing Undocumented
Instance Variable paused Undocumented
def dataReceived(self, data): (source)
from twisted.internet.interfaces.IProtocol
overrides twisted.internet.protocol.Protocol.dataReceived
overridden in twisted.protocols.amp.BinaryBoxProtocol

Convert int prefixed strings into calls to stringReceived.

def lengthLimitExceeded(self, length): (source)
overridden in twisted.protocols.amp.BinaryBoxProtocol

Callback invoked when a length prefix greater than MAX_LENGTH is received. The default implementation disconnects the transport. Override this.

Parameters
length:intThe length prefix which was received.
def sendString(self, string): (source)

Send a prefixed string to the other end of the connection.

Parameters
string:bytesThe string to send. The necessary framing (length prefix, etc) will be added.
def stringReceived(self, string): (source)

Override this for notification when each complete string is received.

Parameters
string:bytesThe complete string which was received with all framing (length prefix, etc) removed.
MAX_LENGTH: int = (source)
overridden in twisted.protocols.amp.BinaryBoxProtocol

Undocumented

Value
99999
recvd = (source)
overridden in twisted.protocols.amp.BinaryBoxProtocol

Undocumented

prefixLength: int = (source)
overridden in twisted.protocols.basic.Int16StringReceiver, twisted.protocols.basic.Int32StringReceiver, twisted.protocols.basic.Int8StringReceiver

length of the prefix, in bytes. Define it in subclass, using struct.calcsize(structFormat)

structFormat: str = (source)
overridden in twisted.protocols.basic.Int16StringReceiver, twisted.protocols.basic.Int32StringReceiver, twisted.protocols.basic.Int8StringReceiver

format used for struct packing/unpacking. Define it in subclass.

_compatibilityOffset: int = (source)

the offset within _unprocessed to the next message to be parsed. (used to generate the recvd attribute)

_unprocessed: bytes = (source)

bytes received, but not yet broken up into messages / sent to stringReceived. _compatibilityOffset must be updated when this value is updated so that the recvd attribute can be generated correctly.