moved "ping" function to RPC server

grum/mainwin.py

@@ -51,7 +51,6 @@ class MainWindow(QMainWindow):
         rst.start()
         rst.server.register_function(self.new_plot)
         rst.server.register_function(self.append_data)
-        rst.server.register_function(self.ping)
 
         self.sig_make_new_plot.connect(self.on_make_new_plot)
 
@@ -76,9 +75,6 @@ class MainWindow(QMainWindow):
         else:
             item.set_alarm(True)
 
-    def ping(self):
-        return "pong"
-
 
     # Signal callbacks
 

grum/rpc/rpcserver.py

@@ -7,6 +7,10 @@ class RPCServer(xrs.SimpleXMLRPCServer):
         addr = (host, port)
         kwargs.setdefault("allow_none", True)
         super().__init__(addr, *args, **kwargs)
+        self.register_function(self.ping)
+
+    def ping(self):
+        return "pong"