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# ``twisted`.`protocols`.`wire`.`Echo``

class documentation

`class Echo(protocol.Protocol): (source)`

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As soon as any data is received, write it back (RFC 862).

Method | `dataReceived` | Called whenever data is received.

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

def dataReceived(self, data): (source)
from `twisted.internet.interfaces.IProtocol`
overrides `twisted.internet.protocol.Protocol.dataReceived`

Called whenever data is received.

Use this method to translate to a higher-level message. Usually, some callback will be made upon the receipt of each complete protocol message.

Parameters
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.