final.

Author: janiversen

pymodbus/server/async_io.py

@@ -311,6 +311,10 @@ def callback_disconnected(self, exc: Exception | None) -> None:
         """Call when connection is lost."""
         Log.debug("callback_disconnected called: {}", exc)
 
+    def callback_data(self, data: bytes, addr: tuple | None = None) -> int:
+        """Handle received data."""
+        Log.debug("callback_data called: {} addr={}", data, ":hex", addr)
+        return 0
 
 class ModbusTcpServer(ModbusBaseServer):
     """A modbus threaded tcp socket server.

pymodbus/transport/transport.py

@@ -366,10 +366,9 @@ def callback_connected(self) -> None:
     def callback_disconnected(self, exc: Exception | None) -> None:
         """Call when connection is lost."""
 
+    @abstractmethod
     def callback_data(self, data: bytes, addr: tuple | None = None) -> int:
         """Handle received data."""
-        Log.debug("callback_data called: {} addr={}", data, ":hex", addr)
-        return 0
 
     # ----------------------------------- #
     # Helper methods for external classes #