Fix spec 0.7rev2 is_alive

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2777 b32b6428-25c9-4566-ad07-03861ab6144f

libs/lib/xaal/lib/core.py

@@ -108,12 +108,11 @@ class EngineMixin(object):
         msg = self.msg_factory.build_alive_for(dev, timeout)
         self.queue_msg(msg)
 
-    def send_is_alive(self, dev, dev_types="any.any"):
+    def send_is_alive(self, dev, targets=[ALIVE_ADDR,], dev_types="any.any"):
         """Send a is_alive message, w/ dev_types filtering"""
-        body = {}
-        body['dev_types'] = dev_types
-        msg = self.msg_factory.build_msg(dev, [ALIVE_ADDR,], MessageType.REQUEST, "is_alive", body)
-        self.queue_msg(msg)
+        body = {'dev_types': dev_types}
+        self.send_request(dev,targets, 'is_alive', body)
+
 
 
     #####################################################
@@ -238,11 +237,13 @@ class Timer(object):
 def filter_msg_for_devices(msg, devices):
     """
     loop throught the devices, to find which are expected w/ the msg
-    - Filter on dev_types for is_alive request.
+    - Filter on dev_types for is_alive broadcast request.
     - Filter on device address
     """
     results = []
-    if msg.is_request_isalive():
+    if msg.is_request_isalive() and (ALIVE_ADDR in msg.targets):
+        # if we receive a broadcast is_alive request, we reply
+        # with filtering on dev_tyes. 
         if 'dev_types' in msg.body.keys():
             dev_types = msg.body['dev_types']
             if 'any.any' in dev_types:
@@ -255,6 +256,9 @@ def filter_msg_for_devices(msg, devices):
                     elif any_subtype in dev_types:
                         results.append(dev)
     else:
+        # this is a normal request, only filter on device address
+        # note: direct is_alive are treated like normal request 
+        # so dev_types filtering is discarded
         for dev in devices:
             if dev.address in msg.targets:
                 results.append(dev)