gs: more error catching

ground-station.py

@@ -209,6 +209,7 @@ async def new_boat(boatId, name, ws):
 async def run(ws, path):
     """hadeler for every new websocket connection"""
     client = None
+    try:
         async for msg in ws:
             for message in msg.split("\n"):
                 if len(message) == 0:
@@ -249,6 +250,8 @@ async def run(ws, path):
                             print("INFO: boat " + client['id'] + ": disconnected")
                             client['state'] = "terminated"
                     break
+    except websockets.exceptions.ConnectionClosed:
+        print("INFO: connection disconected")
 
 async def main():
     """main"""