twisted.names.dns.DNSMixin : API documentation

t.n.d.DNSMixin(object) : class documentation

DNS protocol mixin shared by UDP and TCP implementations.

Instance Variables _reactor A IReactorTime and IReactorUDP provider which will be used to issue DNS queries and manage request timeouts.

Method	__init__	Undocumented
Method	pickID	Return a unique ID for queries.
Method	callLater	Wrapper around reactor.callLater, mainly for test purpose.
Method	_query	Send out a message with the given queries.
Method	_clearFailed	Clean the Deferred after a timeout.

def __init__(self, controller, reactor=None): (source)

Undocumented

def pickID(self): (source)

Return a unique ID for queries.

def callLater(self, period, func, *args): (source)

Wrapper around reactor.callLater, mainly for test purpose.

def _query(self, queries, timeout, id, writeMessage): (source)

Send out a message with the given queries.

Parameters	queries	The queries to transmit (type: `list` of `Query` instances )
	timeout	How long to wait before giving up (type: `int` or `float` )
	id	Unique key for this request (type: `int` )
	writeMessage	One-parameter callback which writes the message (type: `callable` )
Returns	a `Deferred` which will be fired with the result of the query, or errbacked with any errors that could happen (exceptions during writing of the query, timeout errors, ...). (type: `Deferred` )

def _clearFailed(self, deferred, id): (source)

Clean the Deferred after a timeout.