do not crash when a conenction can not be done

secop.py

@@ -152,13 +152,13 @@ class ScanStream(UdpStream):
         self.select_dict[sock.fileno()] = self
 
 
-def send_fake_udp(uri, equipment_id='fake'):
+def send_fake_udp(uri, device='fake'):
     sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
     msg = json.dumps({
         'SECoP': 'for_other_node',
         'uri': uri,
-        'equipment_id': equipment_id,
+        'device': device,
     }, ensure_ascii=False, separators=(',', ':')).encode('utf-8')
     sock.sendto(msg, ('255.255.255.255', SECOP_UDP_PORT))
 

streams.py

@@ -263,8 +263,11 @@ class EventStream:
                 if not isinstance(stream, Stream):
                     for streamcls, uri, kwargs in stream.events():
                         if uri not in self.streams:
-                            print('add stream', uri, kwargs)
-                            self.streams[uri] = streamcls(uri, **kwargs)
+                            try:
+                                self.streams[uri] = streamcls(uri, **kwargs)
+                                print('added stream', uri, kwargs)
+                            except Exception as e:
+                                print('can not connect to', uri, repr(e))
             for name, stream in self.streams.items():
                 try:
                     if stream.get_events(events, maxevents):