DNS protocol over UDP.
| Instance Variable | resends | Undocumented |
| Method | stopProtocol | Stop protocol: reset state variables. |
| Instance Variable | liveMessages | Undocumented |
| Instance Variable | transport | Undocumented |
| Method | startProtocol | Upon start, reset internal state. |
| Method | writeMessage | Send a message holding DNS queries. |
| Method | startListening | Undocumented |
| Method | datagramReceived | Read a datagram, extract the message in it and trigger the associated Deferred. |
| Method | removeResend | Mark message ID as no longer having duplication suppression. |
| 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. |
Send a message holding DNS queries.
| Parameters | message | Undocumented (type: Message) |
| address | Undocumented |
Read a datagram, extract the message in it and trigger the associated Deferred.