twisted.names.dns.DNSDatagramProtocol(DNSMixin, protocol.DatagramProtocol) class documentationtwisted.names.dns
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DNS protocol over UDP.
| Method | stopProtocol | Stop protocol: reset state variables. |
| 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:
| Method | __init__ | 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 DatagramProtocol:
| Instance Variable | transport | The transport with which this protocol is associated, if it is associated
with one. (type: None
or IUDPTransport
provider) |
| Method | logPrefix | Return a prefix matching the class name, to identify log messages related to this protocol instance. |
| Method | connectionRefused | Called due to error from write in connected mode. |
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. |
Read a datagram, extract the message in it and trigger the associated Deferred.