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# ``twisted`.`internet`.`protocol`.`ConnectedDatagramProtocol``

class documentation

`class ConnectedDatagramProtocol(DatagramProtocol): (source)`

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Protocol for connected datagram-oriented transport.

No longer necessary for UDP.

Method | `connectionFailed` | Called if connecting failed.
Method | `datagramReceived` | Called when a datagram is received.

Inherited from `DatagramProtocol`:

Method | `connectionRefused` | Called due to error from write in connected mode.
Method | `logPrefix` | Return a prefix matching the class name, to identify log messages related to this protocol instance.
Instance Variable | `transport` | The transport with which this protocol is associated, if it is associated with one.

Inherited from `AbstractDatagramProtocol` (via `DatagramProtocol`):

Method | `__getstate__` | Undocumented
Method | `doStart` | Make sure startProtocol is called.
Method | `doStop` | Make sure stopProtocol is called.
Method | `makeConnection` | Make a connection to a transport and a server.
Method | `startProtocol` | Called when a transport is connected to this protocol.
Method | `stopProtocol` | Called when the transport is disconnected.
Class Variable | `noisy` | Undocumented
Instance Variable | `numPorts` | Undocumented

def connectionFailed(self, failure: `failure.Failure`): (source)

Called if connecting failed.

Usually this will be due to a DNS lookup failure.

def datagramReceived(self, datagram): (source)
overrides `twisted.internet.protocol.AbstractDatagramProtocol.datagramReceived`

Called when a datagram is received.

Parameters
datagram | the string received from the transport.