def _sendAlive(self, usn, nt, udn):
if not usn in self.advertisements:
logger.log_warning("no registered advertisement for %s" % usn)
return
adv = self.advertisements[usn]
resp = [
'NOTIFY * HTTP/1.1',
'HOST: 239.255.255.250:1900',
'NTS: ssdp:alive',
'NT: %s' % nt,
'USN: %s' % usn,
'LOCATION: http://%s:%d/%s' % (self.interface.address, 1900, udn.replace(':','_')),
'CACHE-CONTROL: max-age=%d' % self.expires,
'SERVER: Twisted, UPnP/1.0, Higgins'
]
self.transport.write('\r\n'.join(resp) + '\r\n\r\n', (SSDP_MULTICAST_GROUP, 1900))
logger.log_debug("sent ssdp:alive for %s on %s" % (usn, self.interface.address))
adv.delayed = reactor.callLater(self.expires, self._sendAlive, usn, nt, udn)
def locateChild(self, request, segments):
segments = [part for part in segments if part != '']
logger.log_debug("%s" % '/' + '/'.join(segments))
# we need the Host header
if request.host == None:
logger.log_warning("can't determine host from request, ignoring")
return None, []
# this is a fix for coherence (seen on v0.6.2), which doesn't send the
# port number as part of the Host header.
urlparts = urlparse('http://' + request.host)
host = '%s:1901' % urlparts.netloc
# / returns 404
if segments == []:
return None, []
# the first segment is the device UDN with ':' escaped as '_'
device_id = segments[0].replace('_',':')
try:
device = self.server.devices[device_id]
except:
logger.log_warning("device '%s' doesn't exist" % device_id)
return None, []
# if the next segment is 'root-device.xml', return the device description
segments = segments[1:]
if segments == []:
return StaticResource(device.getDescription(host, True), 'text/xml'), []
# otherwise the next segment is the service ID
service_id = segments[0].replace('_',':')
try:
service = device._services[service_id]
except:
logger.log_warning("service '%s' doesn't exist" % service_id)
return None, []
segments = segments[1:]
if segments == []:
return StaticResource(service.getDescription(), 'text/xml'), []
if segments[0] == 'control':
return ControlResource(service), []
if segments[0] == 'event':
return EventResource(service), []
return None, []
def _notifyFailed(self, failure):
logger.log_warning("NOTIFY failed: %s" % str(failure))
