Package pyxmpp2 :: Module interfaces :: Class Resolver

Class Resolver

Abstract base class for asynchronous DNS resolvers to be used with PyxMPP.

Nested Classes

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__metaclass__
Metaclass for defining Abstract Base Classes (ABCs).

Instance Methods

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resolve_srv(self, domain, service, protocol, callback)
Start looking up an SRV record for service at domain.

resolve_address(self, hostname, callback, allow_cname=True)
Start looking up an A or AAAA record.

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __init__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables

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__abstractmethods__ = frozenset(['resolve_address', 'resolve_s...

_abc_cache = <_weakrefset.WeakSet object at 0x7fc6e182a850>

_abc_negative_cache = <_weakrefset.WeakSet object at 0x7fc6e18...

_abc_negative_cache_version = 21
hash(x)

_abc_registry = <_weakrefset.WeakSet object at 0x7fc6e182a790>

Properties

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Inherited from object: __class__

Method Details

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resolve_srv(self, domain, service, protocol, callback)

Start looking up an SRV record for service at domain.

callback will be called with a properly sorted list of (hostname, port) pairs on success. The list will be empty on error and it will contain only (".", 0) when the service is explicitely disabled.

Parameters:

domain (unicode) - domain name to look up
service (unicode) - service name e.g. 'xmpp-client'
protocol (unicode) - protocol name, e.g. 'tcp'
callback (function accepting a single argument) - a function to be called with a list of received addresses

Decorators:

@abstractmethod

resolve_address(self, hostname, callback, allow_cname=True)

Start looking up an A or AAAA record.

callback will be called with a list of IPv4 or IPv6 address literals on success. The list will be empty on error.

Parameters:

hostname (unicode) - the host name to look up
callback (function accepting a single argument) - a function to be called with a list of received addresses
allow_cname (bool) - True if CNAMEs should be followed

Decorators:

@abstractmethod

Class Variable Details

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abstractmethods

Value:

frozenset(['resolve_address', 'resolve_srv'])

_abc_negative_cache

Value:

<_weakrefset.WeakSet object at 0x7fc6e182a8d0>