1.Remove invalid context management

2.Improve the example and actively release the connection

examples/connect_discover_read_tags.py

@@ -51,6 +51,8 @@ def main():
         start = time.time()
         properties = opc_client.properties(tags)
         print(f'{n} {time.time()-start:.3f}s {properties}')
+    opc_client.close() # Remote call OpcDaClient. close()
+    opc_client._pyroRelease() # release the pyro connection
 
 
 if __name__ == '__main__':

openopc2/gateway_proxy.py

@@ -26,9 +26,9 @@ def __init__(self, host: str = 'localhost', port: int = 7766):
         register_dict_to_class("exceptions.OPCError", OPCError.dict_to_class)
 
     def get_server_proxy(self):
-        with Pyro5.client.Proxy(f"PYRO:OpenOpcGatewayServer@{self.host}:{self.port}") as open_opc_gateway_server:
-            return open_opc_gateway_server
+        open_opc_gateway_server = Pyro5.client.Proxy(f"PYRO:OpenOpcGatewayServer@{self.host}:{self.port}")
+        return open_opc_gateway_server
 
     def get_opc_da_client_proxy(self):
-        with Pyro5.client.Proxy(f"PYRO:OpcDaClient@{self.host}:{self.port}") as opc_da_client_proxy:
-            return opc_da_client_proxy
+        opc_da_client_proxy =  Pyro5.client.Proxy(f"PYRO:OpcDaClient@{self.host}:{self.port}")
+        return opc_da_client_proxy