twisted.names.client

def createResolver(servers=None, resolvconf=None, hosts=None):

Create and return a Resolver.

Parameters	servers	If not `None`, interpreted as a list of domain name servers to attempt to use. Each server is a tuple of address in `str` dotted-quad form and `int` port number. (type: `list` of `(str, int)` or `None`)
	resolvconf	If not `None`, on posix systems will be interpreted as an alternate resolv.conf to use. Will do nothing on windows systems. If `None`, /etc/resolv.conf will be used. (type: `str` or `None`)
	hosts	If not `None`, an alternate hosts file to use. If `None` on posix systems, /etc/hosts will be used. On windows, C:\windows\hosts will be used. (type: `str` or `None`)
Returns	(type: `IResolver`)

def getResolver():

Get a Resolver instance.

Create twisted.names.client.theResolver if it is None, and then return that value.

Returns (type: IResolver)

def getHostByName(name, timeout=None, effort=10):

Resolve a name to a valid ipv4 or ipv6 address.

Will errback with DNSQueryTimeoutError on a timeout, DomainError or AuthoritativeDomainError (or subclasses) on other errors.

Parameters	name	DNS name to resolve. (type: `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
	effort	How many times CNAME and NS records to follow while resolving this name. (type: `int`)
Returns	(type: `Deferred`)

def query(query, timeout=None):

Dispatch query to the method which can handle its type.

Parameters	query	The DNS query being issued, to which a response is to be generated. (type: `twisted.names.dns.Query`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupAddress(name, timeout=None):

Perform an A record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupIPV6Address(name, timeout=None):

Perform an AAAA record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupAddress6(name, timeout=None):

Perform an A6 record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupMailExchange(name, timeout=None):

Perform an MX record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupNameservers(name, timeout=None):

Perform an NS record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupCanonicalName(name, timeout=None):

Perform a CNAME record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupMailBox(name, timeout=None):

Perform an MB record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupMailGroup(name, timeout=None):

Perform an MG record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupMailRename(name, timeout=None):

Perform an MR record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupPointer(name, timeout=None):

Perform a PTR record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupAuthority(name, timeout=None):

Perform an SOA record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupNull(name, timeout=None):

Perform a NULL record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupWellKnownServices(name, timeout=None):

Perform a WKS record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupService(name, timeout=None):

Perform an SRV record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupHostInfo(name, timeout=None):

Perform a HINFO record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupMailboxInfo(name, timeout=None):

Perform an MINFO record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupText(name, timeout=None):

Perform a TXT record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupSenderPolicy(name, timeout=None):

Perform a SPF record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupResponsibility(name, timeout=None):

Perform an RP record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupAFSDatabase(name, timeout=None):

Perform an AFSDB record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupZone(name, timeout=None):

Perform an AXFR record lookup.

NB This is quite different from other DNS requests. See http://cr.yp.to/djbdns/axfr-notes.html for more information.

NB Unlike other lookup* methods, the timeout here is not a list of ints, it is a single int.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	When this timeout expires, the query is considered failed. (type: `int`)
Returns	A `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 and third elements are always empty. The `Deferred` may instead fail with one of the exceptions defined in `twisted.names.error` or with `NotImplementedError`. (type: `Deferred`)

def lookupAllRecords(name, timeout=None):

Perform an ALL_RECORD lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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 lookupNamingAuthorityPointer(name, timeout=None):

Perform a NAPTR record lookup.

Parameters	name	DNS name to resolve. (type: `bytes` or `str`)
	timeout	Number of seconds after which to reissue the query. When the last timeout expires, the query is considered failed. (type: Sequence of `int`)
Returns	A `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`)

Class	Resolver	No summary
Class	AXFRController	Undocumented
Class	ThreadedResolver	Undocumented
Class	DNSClientFactory	No class docstring; 1/4 methods documented
Function	createResolver	Create and return a Resolver.
Function	getResolver	Get a Resolver instance.
Function	getHostByName	Resolve a name to a valid ipv4 or ipv6 address.
Function	query	Dispatch `query` to the method which can handle its type.
Function	lookupAddress	Perform an A record lookup.
Function	lookupIPV6Address	Perform an AAAA record lookup.
Function	lookupAddress6	Perform an A6 record lookup.
Function	lookupMailExchange	Perform an MX record lookup.
Function	lookupNameservers	Perform an NS record lookup.
Function	lookupCanonicalName	Perform a CNAME record lookup.
Function	lookupMailBox	Perform an MB record lookup.
Function	lookupMailGroup	Perform an MG record lookup.
Function	lookupMailRename	Perform an MR record lookup.
Function	lookupPointer	Perform a PTR record lookup.
Function	lookupAuthority	Perform an SOA record lookup.
Function	lookupNull	Perform a NULL record lookup.
Function	lookupWellKnownServices	Perform a WKS record lookup.
Function	lookupService	Perform an SRV record lookup.
Function	lookupHostInfo	Perform a HINFO record lookup.
Function	lookupMailboxInfo	Perform an MINFO record lookup.
Function	lookupText	Perform a TXT record lookup.
Function	lookupSenderPolicy	Perform a SPF record lookup.
Function	lookupResponsibility	Perform an RP record lookup.
Function	lookupAFSDatabase	Perform an AFSDB record lookup.
Function	lookupZone	Perform an AXFR record lookup.
Function	lookupAllRecords	Perform an ALL_RECORD lookup.
Function	lookupNamingAuthorityPointer	Perform a NAPTR record lookup.

twisted.names.client module documentation

`twisted.names.client` module documentation