def resolve(self, name, timeout = (1, 3, 11, 45)):
"""Return a Deferred that will resolve a hostname.
"""
if not name:
# XXX - This is *less than* '::', and will screw up IPv6 servers
return defer.succeed('0.0.0.0')
if abstract.isIPAddress(name):
return defer.succeed(name)
return self.resolver.getHostByName(name, timeout)
def getHostByName(self, name, timeout = (1, 3, 11, 45)):
try:
address = socket.gethostbyname(name)
except socket.error:
msg = "address %r not found" % (name,)
err = error.DNSLookupError(msg)
return defer.fail(err)
else:
return defer.succeed(address)