How to use the zeroconf.DNSOutgoing function in zeroconf
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wmcbrine / tivoremote / zeroconf.py View on Github 
def unregisterAllServices(self):
"""Unregister all registered services."""
if len(self.services) > 0:
now = currentTimeMillis()
nextTime = now
i = 0
while i < 3:
if now < nextTime:
self.wait(nextTime - now)
now = currentTimeMillis()
continue
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
for info in self.services.values():
out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR,
_CLASS_IN, 0, info.name), 0)
out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV,
_CLASS_IN, 0, info.priority, info.weight,
info.port, info.server), 0)
out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT,
_CLASS_IN, 0, info.text), 0)
if info.address:
out.addAnswerAtTime(DNSAddress(info.server,
_TYPE_A, _CLASS_IN, 0, info.address), 0)
self.send(out)
i += 1
nextTime += _UNREGISTER_TIMEdef run(self):
while True:
event = None
now = currentTimeMillis()
if len(self.list) == 0 and self.nextTime > now:
self.zc.wait(self.nextTime - now)
if _GLOBAL_DONE or self.done:
return
now = currentTimeMillis()
if self.nextTime <= now:
out = DNSOutgoing(_FLAGS_QR_QUERY)
out.addQuestion(DNSQuestion(self.type, _TYPE_PTR, _CLASS_IN))
for record in self.services.values():
if not record.isExpired(now):
out.addAnswerAtTime(record, now)
self.zc.send(out)
self.nextTime = now + self.delay
self.delay = min(20 * 1000, self.delay * 2)
if len(self.list) > 0:
event = self.list.pop(0)
if event is not None:
event(self.zc)del(self.services[info.name.lower()])
if self.servicetypes[info.type]>1:
self.servicetypes[info.type]-=1
else:
del self.servicetypes[info.type]
except:
pass
now = currentTimeMillis()
nextTime = now
i = 0
while i < 3:
if now < nextTime:
self.wait(nextTime - now)
now = currentTimeMillis()
continue
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR,
_CLASS_IN, 0, info.name), 0)
out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV,
_CLASS_IN, 0, info.priority, info.weight, info.port,
info.name), 0)
out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT, _CLASS_IN,
0, info.text), 0)
if info.address:
out.addAnswerAtTime(DNSAddress(info.server, _TYPE_A,
_CLASS_IN, 0, info.address), 0)
self.send(out)
i += 1
nextTime += _UNREGISTER_TIMEfor record in self.cache.entriesWithName(info.type):
if (record.type == _TYPE_PTR and
not record.isExpired(now) and
record.alias == info.name):
if info.name.find('.') < 0:
info.name = '%s.[%s:%s].%s' % (info.name,
info.address, info.port, info.type)
self.checkService(info)
return
raise NonUniqueNameException
if now < nextTime:
self.wait(nextTime - now)
now = currentTimeMillis()
continue
out = DNSOutgoing(_FLAGS_QR_QUERY | _FLAGS_AA)
self.debug = out
out.addQuestion(DNSQuestion(info.type, _TYPE_PTR, _CLASS_IN))
out.addAuthorativeAnswer(DNSPointer(info.type, _TYPE_PTR,
_CLASS_IN, _DNS_TTL, info.name))
self.send(out)
i += 1
nextTime += _CHECK_TIMEdef run(self):
while True:
event = None
now = currentTimeMillis()
if len(self.list) == 0 and self.nextTime > now:
self.zc.wait(self.nextTime - now)
if _GLOBAL_DONE or self.done:
return
now = currentTimeMillis()
if self.nextTime <= now:
out = DNSOutgoing(_FLAGS_QR_QUERY)
out.addQuestion(DNSQuestion(self.type, _TYPE_PTR, _CLASS_IN))
for record in self.services.values():
if not record.isExpired(now):
out.addAnswerAtTime(record, now)
self.zc.send(out)
self.nextTime = now + self.delay
self.delay = min(20 * 1000, self.delay * 2)
if len(self.list) > 0:
event = self.list.pop(0)
if event is not None:
event(self.zc)def unregisterAllServices(self):
"""Unregister all registered services."""
if len(self.services) > 0:
now = currentTimeMillis()
nextTime = now
i = 0
while i < 3:
if now < nextTime:
self.wait(nextTime - now)
now = currentTimeMillis()
continue
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
for info in self.services.values():
out.addAnswerAtTime(DNSPointer(info.type, _TYPE_PTR,
_CLASS_IN, 0, info.name), 0)
out.addAnswerAtTime(DNSService(info.name, _TYPE_SRV,
_CLASS_IN, 0, info.priority, info.weight,
info.port, info.server), 0)
out.addAnswerAtTime(DNSText(info.name, _TYPE_TXT,
_CLASS_IN, 0, info.text), 0)
if info.address:
out.addAnswerAtTime(DNSAddress(info.server,
_TYPE_A, _CLASS_IN, 0, info.address), 0)
self.send(out)
i += 1
nextTime += _UNREGISTER_TIMEfor record in self.cache.entriesWithName(info.type):
if (record.type == _TYPE_PTR and
not record.isExpired(now) and
record.alias == info.name):
if info.name.find('.') < 0:
info.name = '%s.[%s:%s].%s' % (info.name,
info.address, info.port, info.type)
self.checkService(info)
return
raise NonUniqueNameException
if now < nextTime:
self.wait(nextTime - now)
now = currentTimeMillis()
continue
out = DNSOutgoing(_FLAGS_QR_QUERY | _FLAGS_AA)
self.debug = out
out.addQuestion(DNSQuestion(info.type, _TYPE_PTR, _CLASS_IN))
out.addAuthorativeAnswer(DNSPointer(info.type, _TYPE_PTR,
_CLASS_IN, _DNS_TTL, info.name))
self.send(out)
i += 1
nextTime += _CHECK_TIMEfor question in msg.questions:
out.addQuestion(question)
for question in msg.questions:
if question.type == _TYPE_PTR:
if question.name == "_services._dns-sd._udp.local.":
for stype in self.servicetypes.keys():
if out is None:
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
out.addAnswer(msg,
DNSPointer("_services._dns-sd._udp.local.",
_TYPE_PTR, _CLASS_IN, _DNS_TTL, stype))
for service in self.services.values():
if question.name == service.type:
if out is None:
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
out.addAnswer(msg,
DNSPointer(service.type, _TYPE_PTR,
_CLASS_IN, _DNS_TTL, service.name))
else:
try:
if out is None:
out = DNSOutgoing(_FLAGS_QR_RESPONSE | _FLAGS_AA)
# Answer A record queries for any service addresses we know
if question.type in (_TYPE_A, _TYPE_ANY):
for service in self.services.values():
if service.server == question.name.lower():
out.addAnswer(msg, DNSAddress(question.name,
_TYPE_A, _CLASS_IN | _CLASS_UNIQUE,
_DNS_TTL, service.address))"""Returns true if the service could be discovered on the
network, and updates this object with details discovered.
"""
now = currentTimeMillis()
delay = _LISTENER_TIME
next = now + delay
last = now + timeout
result = False
try:
zc.addListener(self, DNSQuestion(self.name, _TYPE_ANY, _CLASS_IN))
while (self.server is None or self.address is None or
self.text is None):
if last <= now:
return False
if next <= now:
out = DNSOutgoing(_FLAGS_QR_QUERY)
out.addQuestion(DNSQuestion(self.name, _TYPE_SRV,
_CLASS_IN))
out.addAnswerAtTime(zc.cache.getByDetails(self.name,
_TYPE_SRV, _CLASS_IN), now)
out.addQuestion(DNSQuestion(self.name, _TYPE_TXT,
_CLASS_IN))
out.addAnswerAtTime(zc.cache.getByDetails(self.name,
_TYPE_TXT, _CLASS_IN), now)
if self.server is not None:
out.addQuestion(DNSQuestion(self.server,
_TYPE_A, _CLASS_IN))
out.addAnswerAtTime(zc.cache.getByDetails(self.server,
_TYPE_A, _CLASS_IN), now)
zc.send(out)
next = now + delay
delay = delay * 2zeroconf
A pure python implementation of multicast DNS service discovery
Package Health Score
88 / 100Popular zeroconf functions
- zeroconf.BadTypeInNameException
- zeroconf.DNSAddress
- zeroconf.DNSEntry
- zeroconf.DNSEntry.__init__
- zeroconf.DNSOutgoing
- zeroconf.DNSPointer
- zeroconf.DNSQuestion
- zeroconf.DNSRecord
- zeroconf.DNSRecord.__init__
- zeroconf.DNSService
- zeroconf.DNSText
- zeroconf.get_all_addresses
- zeroconf.IPVersion
- zeroconf.NonUniqueNameException
- zeroconf.ServiceBrowser
- zeroconf.ServiceInfo
- zeroconf.ServiceStateChange
- zeroconf.ServiceStateChange.Added
- zeroconf.ServiceStateChange.Removed
- zeroconf.Zeroconf