def _fetchServers(self, host):
try:
service = "_matrix._tcp.%s" % host
answers, auth, add = yield client.lookupService(service)
except DNSNameError:
answers = []
if (len(answers) == 1
and answers[0].type == dns.SRV
and answers[0].payload
and answers[0].payload.target == dns.Name(".")):
raise DNSNameError("Service %s unavailable", service)
servers = []
for answer in answers:
if answer.type != dns.SRV or not answer.payload:
continue
payload = answer.payload
servers.append(ThreepidBinder._Server(
host=str(payload.target),
port=int(payload.port),
priority=int(payload.priority),
weight=int(payload.weight)
))
servers.sort()
defer.returnValue(servers)
def __init__(self, errorMessage, dnsError=False):
self.value = None
if dnsError:
self.value = Dummy()
self.value.subFailure = Dummy()
self.value.subFailure.value = DNSNameError(errorMessage)
self.getErrorMessage = lambda: errorMessage
def test_SRVNotPresent(self):
"""
Test connectTCP gets called with fallback parameters on NXDOMAIN.
"""
client.theResolver.failure = DNSNameError(b'example.org')
self.connector.connect()
self.assertIsNone(self.factory.reason)
self.assertEqual(self.reactor.tcpClients.pop()[:2],
('example.org', 'xmpp-server'))
def test_SRVNotPresent(self):
"""
Test connectTCP gets called with fallback parameters on NXDOMAIN.
"""
client.theResolver.failure = DNSNameError('example.org')
self.connector.connect()
self.assertIdentical(None, self.factory.reason)
self.assertEqual('example.org', self.reactor.host)
self.assertEqual('xmpp-server', self.reactor.port)
def getHostByName(*args, **kwargs) -> Deferred:
return fail(DNSNameError())
