Python client.getResolver方法代碼示例

# 需要導入模塊: from twisted.names import client [as 別名]
# 或者: from twisted.names.client import getResolver [as 別名]
def test_interface(self):
        """
        L{client.getResolver} returns an object providing L{IResolver}.
        """
        with AlternateReactor(Clock()):
            resolver = client.getResolver()
        self.assertTrue(verifyObject(IResolver, resolver)) 

# 需要導入模塊: from twisted.names import client [as 別名]
# 或者: from twisted.names.client import getResolver [as 別名]
def test_idempotent(self):
        """
        Multiple calls to L{client.getResolver} return the same L{IResolver}
        implementation.
        """
        with AlternateReactor(Clock()):
            a = client.getResolver()
            b = client.getResolver()
        self.assertIs(a, b) 

# 需要導入模塊: from twisted.names import client [as 別名]
# 或者: from twisted.names.client import getResolver [as 別名]
def _initResolver():
    global DebugResolver
    if DebugResolver is None:
        if config.Scheduling.iSchedule.DNSDebug:
            DebugResolver = FakeBindAuthority(config.Scheduling.iSchedule.DNSDebug)
        else:
            DebugResolver = getResolver() 

# 需要導入模塊: from twisted.names import client [as 別名]
# 或者: from twisted.names.client import getResolver [as 別名]
def __init__(self):
        self.recs = {}
        
        self.resolver = client.getResolver() 

# 需要導入模塊: from twisted.names import client [as 別名]
# 或者: from twisted.names.client import getResolver [as 別名]
def reverseResolve(
    ip: MaybeIPAddress, resolver: IResolver = None
) -> Optional[List[str]]:
    """Using the specified IResolver, reverse-resolves the specifed `ip`.

    :return: a sorted list of resolved hostnames (which the specified IP
        address reverse-resolves to). If the DNS lookup appeared to succeed,
        but no hostnames were found, returns an empty list. If the DNS lookup
        timed out or an error occurred, returns None.
    """
    if resolver is None:
        resolver = getResolver()
    ip = IPAddress(ip)
    try:
        data = yield resolver.lookupPointer(
            ip.reverse_dns, timeout=REVERSE_RESOLVE_RETRIES
        )
        # I love the concise way in which I can ask the Twisted data structure
        # what the list of hostnames is. This is great.
        results = sorted(
            (rr.payload.name.name.decode("idna") for rr in data[0]),
            key=preferred_hostnames_sort_key,
        )
    except AuthoritativeDomainError:
        # "Failed to reverse-resolve '%s': authoritative failure." % ip
        # This means the name didn't resolve, so return an empty list.
        return []
    except DomainError:
        # "Failed to reverse-resolve '%s': no records found." % ip
        # This means the name didn't resolve, so return an empty list.
        return []
    except DNSQueryTimeoutError:
        # "Failed to reverse-resolve '%s': timed out." % ip
        # Don't return an empty list since this implies a temporary failure.
        pass
    except ResolverError:
        # "Failed to reverse-resolve '%s': rejected by local resolver." % ip
        # Don't return an empty list since this could be temporary (unclear).
        pass
    else:
        return results
    return None