twisted.names.dns.DNSProtocol(DNSMixin, protocol.Protocol) class documentationtwisted.names.dns
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DNS protocol over TCP.
| Instance Variable | length | Undocumented |
| Instance Variable | buffer | Undocumented |
| Method | writeMessage | Send a message holding DNS queries. |
| Method | connectionMade | Connection is made: reset internal state, and notify the controller. |
| Instance Variable | liveMessages | Undocumented |
| Method | connectionLost | Notify the controller that this protocol is no longer connected. |
| Method | dataReceived | Called whenever data is received. |
| Method | query | Send out a message with the given queries. |
Inherited from DNSMixin:
| Instance Variable | id | Undocumented |
| Method | __init__ | Undocumented |
| Instance Variable | controller | Undocumented |
| Method | pickID | Return a unique ID for queries. |
| Method | callLater | Wrapper around reactor.callLater, mainly for test purpose. |
| Instance Variable | _reactor | A IReactorTime and IReactorUDP provider which will be used to issue DNS queries and manage request timeouts. |
| Method | _query | Send out a message with the given queries. |
| Method | _clearFailed | Clean the Deferred after a timeout. |
Inherited from Protocol:
| Method | logPrefix | Return a prefix matching the class name, to identify log messages related to this protocol instance. |
Inherited from BaseProtocol (via Protocol):
| Instance Variable | connected | Undocumented |
| Instance Variable | transport | Undocumented |
| Method | makeConnection | Make a connection to a transport and a server. |
Connection is made: reset internal state, and notify the controller.
Notify the controller that this protocol is no longer connected.
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. |