Make the PresenceService stuff start to work

sugar/p2p/Stream.py

@@ -8,6 +8,18 @@ import network
 from MostlyReliablePipe import MostlyReliablePipe
 from sugar.presence import Service
 
+def is_multicast_address(address):
+	"""Simple numerical check for whether an IP4 address
+	is in the range for multicast addresses or not."""
+	if not address:
+		return False
+	if address[3] != '.':
+		return False
+	first = int(float(address[:3]))
+	if first >= 224 and first <= 239:
+		return True
+	return False
+
 class Stream(object):
 	def __init__(self, service):
 		if not service.get_port():
@@ -19,7 +31,7 @@ class Stream(object):
 		self._callback = None
 
 	def new_from_service(service, start_reader=True):
-		if service.is_multicast_service():
+		if is_multicast_address(service.get_address()):
 			return MulticastStream(service)
 		else:
 			return UnicastStream(service, start_reader)
@@ -75,28 +87,14 @@ class UnicastStream(Stream):
 		if start_reader:
 			self.start_reader()
 
-	def start_reader(self, update_service_port=True):
+	def start_reader(self):
 		"""Start the stream's reader, which for UnicastStream objects is
 		and XMLRPC server.  If there's a port conflict with some other
 		service, the reader will try to find another port to use instead.
 		Returns the port number used for the reader."""
 		# Set up the reader
-		started = False
-		tries = 10
-		self._reader = None
-		while not started and tries > 0:
-			try:
-				self._reader = network.GlibXMLRPCServer(("", self._reader_port))
-				self._reader.register_function(self._message, "message")
-				if update_service_port:
-					self._service.set_port(self._reader_port)  # Update the service's port
-				started = True
-			except(socket.error):
-				self._reader_port = random.randint(self._reader_port + 1, 65500)
-				tries = tries - 1
-		if self._reader is None:
-			print 'Could not start stream reader.'
-		return self._reader_port
+		self._reader = network.GlibXMLRPCServer(("", self._reader_port))
+		self._reader.register_function(self._message, "message")
 
 	def _message(self, message):
 		"""Called by the XMLRPC server when network data arrives."""

sugar/presence/PresenceService.py

@@ -48,7 +48,7 @@ class PresenceService(gobject.GObject):
 
 	def __init__(self):
 		gobject.GObject.__init__(self)
-		self._obcache = ObjectCache()
+		self._objcache = ObjectCache()
 		self._bus = dbus.SessionBus()
 		self._ps = dbus.Interface(self._bus.get_object(self._PRESENCE_SERVICE,
 				self._PRESENCE_OBJECT_PATH), self._PRESENCE_DBUS_INTERFACE)
@@ -174,3 +174,7 @@ class PresenceService(gobject.GObject):
 			return None
 		return self._new_object(buddy_op)
 
+	def registerService(self, name, stype, properties={"":""}, address="", port=-1, domain=u"local"):
+		serv_op = self._ps.registerService(name, stype, properties, address, port, domain)
+		return self._new_object(serv_op)
+

sugar/presence/Service.py

@@ -14,12 +14,42 @@ class Service(gobject.GObject):
 		self._ps_del_object = del_obj_cb
 		sobj = bus.get_object(self._PRESENCE_SERVICE, object_path)
 		self._service = dbus.Interface(sobj, self._SERVICE_DBUS_INTERFACE)
+		self._props = self._service.getProperties()
 
 	def object_path(self):
 		return self._object_path
 
 	def getProperties(self):
-		return self._service.getProperties()
+		return self._props
 
 	def getPublishedValue(self, key):
 		value = self._service.getPublishedValue(key)
+
+	def get_name(self):
+		return self._props['name']
+
+	def get_type(self):
+		return self._props['type']
+
+	def get_domain(self):
+		return self._props['domain']
+
+	def get_address(self):
+		if self._props.has_key('address'):
+			return self._props['address']
+		return None
+
+	def get_activity_id(self):
+		if self._props.has_key('activityId'):
+			return self._props['activityId']
+		return None
+
+	def get_port(self):
+		if self._props.has_key('port'):
+			return self._props['port']
+		return None
+
+	def get_source_address(self):
+		if self._props.has_key('sourceAddress'):
+			return self._props['sourceAddress']
+		return None