remove gevent/dns.py

gevent/dns.py

-# Copyright (c) 2010 Denis Bilenko. See LICENSE for details.
-"""Libevent DNS API made synchronous.
-
-The functions in this module match those in libevent as closely as possible
-yet they return the result instead of passing it to a callback. The calling
-greenlet remains blocked until the result is ready.
-"""
-
-from gevent import core
-from gevent.hub import Waiter
-from _socket import gaierror
-from gevent.core import DNS_QUERY_NO_SEARCH as QUERY_NO_SEARCH
-
-
-__all__ = ['DNSError',
-           'resolve_ipv4',
-           'resolve_ipv6',
-           'resolve_reverse',
-           'resolve_reverse_ipv6',
-           'QUERY_NO_SEARCH']
-
-
-class DNSError(gaierror):
-    """A subclass of :class:`socket.gaierror` used by :mod:`evdns` functions to report errors.
-
-    It uses evdns-specific error codes that are different from the standard socket errors.
-
-        >>> resolve_ipv4('aaaaaaaaaaa')
-        Traceback (most recent call last):
-         ...
-        DNSError: [Errno 3] name does not exist
-    """
-
-    def __init__(self, *args):
-        if len(args) == 1:
-            code = args[0]
-            gaierror.__init__(self, code, core.dns_err_to_string(code))
-        else:
-            gaierror.__init__(self, *args)
-
-
-def resolve_ipv4(name, flags=0):
-    """Lookup an A record for a given *name*.
-    To disable searching for this query, set *flags* to ``QUERY_NO_SEARCH``.
-
-    Returns (ttl, list of packed IPs).
-
-        >>> resolve_ipv4('www.python.org')
-        (10000, ['R^\\xa4\\xa2'])
-    """
-    waiter = Waiter()
-    core.dns_resolve_ipv4(name, flags, waiter.switch_args)
-    result, _type, ttl, addrs = waiter.get()
-    if result != core.DNS_ERR_NONE:
-        raise DNSError(result)
-    return ttl, addrs
-
-
-def resolve_ipv6(name, flags=0):
-    """Lookup an AAAA record for a given *name*.
-    To disable searching for this query, set *flags* to ``QUERY_NO_SEARCH``.
-
-    Returns (ttl, list of packed IPs).
-    """
-    waiter = Waiter()
-    core.dns_resolve_ipv6(name, flags, waiter.switch_args)
-    result, _type, ttl, addrs = waiter.get()
-    if result != core.DNS_ERR_NONE:
-        raise DNSError(result)
-    return ttl, addrs
-
-
-def resolve_reverse(packed_ip, flags=0):
-    """Lookup a PTR record for a given IP address.
-    To disable searching for this query, set *flags* to ``QUERY_NO_SEARCH``.
-
-        >>> packed_ip = socket.inet_aton('82.94.164.162')
-        >>> resolve_reverse(packed_ip)
-        (10000, 'www.python.org')
-    """
-    waiter = Waiter()
-    core.dns_resolve_reverse(packed_ip, flags, waiter.switch_args)
-    result, _type, ttl, addr = waiter.get()
-    if result != core.DNS_ERR_NONE:
-        raise DNSError(result)
-    return ttl, addr
-
-
-def resolve_reverse_ipv6(packed_ip, flags=0):
-    """Lookup a PTR record for a given IPv6 address.
-    To disable searching for this query, set *flags* to ``QUERY_NO_SEARCH``.
-    """
-    waiter = Waiter()
-    core.dns_resolve_reverse_ipv6(packed_ip, flags, waiter.switch_args)
-    result, _type, ttl, addrs = waiter.get()
-    if result != core.DNS_ERR_NONE:
-        raise DNSError(result)
-    return ttl, addrs