twisted.names.cache.CacheResolver(common.ResolverBase) class documentation

Part of twisted.names.cache (View In Hierarchy)

A resolver that serves records from a local, memory cache.

Method __init__ Undocumented
Method __setstate__ Undocumented
Method __getstate__ Undocumented
Method lookupAllRecords Perform an ALL_RECORD lookup.
Method cacheResult Cache a DNS entry.
Method clearEntry Undocumented
Instance Variable _reactor A provider of interfaces.IReactorTime.
Method _lookup Undocumented

Inherited from ResolverBase:

Method exceptionForCode Convert a response code (one of the possible values of dns.Message.rCode to an exception instance representing it.
Method query Dispatch query to the method which can handle its type.
Method lookupAddress Perform an A record lookup.
Method lookupIPV6Address Perform an AAAA record lookup.
Method lookupAddress6 Perform an A6 record lookup.
Method lookupMailExchange Perform an MX record lookup.
Method lookupNameservers Perform an NS record lookup.
Method lookupCanonicalName Perform a CNAME record lookup.
Method lookupMailBox Perform an MB record lookup.
Method lookupMailGroup Perform an MG record lookup.
Method lookupMailRename Perform an MR record lookup.
Method lookupPointer Perform a PTR record lookup.
Method lookupAuthority Perform an SOA record lookup.
Method lookupNull Perform a NULL record lookup.
Method lookupWellKnownServices Perform a WKS record lookup.
Method lookupService Perform an SRV record lookup.
Method lookupHostInfo Perform a HINFO record lookup.
Method lookupMailboxInfo Perform an MINFO record lookup.
Method lookupText Perform a TXT record lookup.
Method lookupSenderPolicy Perform a SPF record lookup.
Method lookupResponsibility Perform an RP record lookup.
Method lookupAFSDatabase Perform an AFSDB record lookup.
Method lookupZone Perform an AXFR record lookup.
Method lookupNamingAuthorityPointer Perform a NAPTR record lookup.
Method getHostByName Resolve the domain name name into an IP address.
Class Variable _errormap A dict mapping DNS protocol failure response codes to exception classes which will be used to represent those failures.
Method _cbRecords Undocumented
_reactor =
A provider of interfaces.IReactorTime.
def __init__(self, cache=None, verbose=0, reactor=None):
overrides twisted.names.common.ResolverBase.__init__
Undocumented
def __setstate__(self, state):
Undocumented
def __getstate__(self):
Undocumented
def _lookup(self, name, cls, type, timeout):
overrides twisted.names.common.ResolverBase._lookup
Undocumented
def lookupAllRecords(self, name, timeout=None):
from twisted.internet.interfaces.IResolver
overrides twisted.names.common.ResolverBase.lookupAllRecords

Perform an ALL_RECORD lookup.

ParametersnameDNS name to resolve. (type: bytes or str)
timeoutNumber of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of int)
ReturnsA Deferred which fires with a three-tuple of lists of twisted.names.dns.RRHeader instances. The first element of the tuple gives answers. The second element of the tuple gives authorities. The third element of the tuple gives additional information. The Deferred may instead fail with one of the exceptions defined in twisted.names.error or with NotImplementedError. (type: Deferred)
def cacheResult(self, query, payload, cacheTime=None):

Cache a DNS entry.

Parametersquerya dns.Query instance.
payloada 3-tuple of lists of dns.RRHeader records, the matching result of the query (answers, authority and additional).
cacheTimeThe time (seconds since epoch) at which the entry is considered to have been added to the cache. If None is given, the current time is used.
def clearEntry(self, query):
Undocumented
API Documentation for twisted, generated by pydoctor at 2020-03-25 17:34:30.