Call callback_function on error (#850)

pychromecast/controllers/__init__.py

@@ -85,9 +85,13 @@ def launch(
                 "%s: Can't launch app with no supporting app_id",
                 self.__class__.__name__,
             )
+            if callback_function:
+                callback_function(False, None)
             return
 
         if self._socket_client is None:
+            if callback_function:
+                callback_function(False, None)
             raise ControllerNotRegistered
 
         self._socket_client.receiver_controller.launch_app(
@@ -130,6 +134,8 @@ def send_message(
         Will raise a NotConnected exception if not connected.
         """
         if self._socket_client is None:
+            if callback_function:
+                callback_function(False, None)
             raise ControllerNotRegistered
 
         receiver_ctrl = self._socket_client.receiver_controller

pychromecast/controllers/media.py

@@ -613,6 +613,8 @@ def _send_command(
             self.logger.warning(
                 "%s command requested but no session is active.", command[MESSAGE_TYPE]
             )
+            if callback_function:
+                callback_function(False, None)
             return
 
         command["mediaSessionId"] = self.status.media_session_id

pychromecast/socket_client.py

@@ -944,12 +944,16 @@ def send_app_message(
     ) -> None:
         """Helper method to send a message to current running app."""
         if namespace not in self.app_namespaces:
+            if callback_function:
+                callback_function(False, None)
             raise UnsupportedNamespace(
                 f"Namespace {namespace} is not supported by current app. "
                 f"Supported are {', '.join(self.app_namespaces)}"
             )
 
         if self.destination_id is None:
+            if callback_function:
+                callback_function(False, None)
             raise NotConnected(
                 "Attempting send a message when destination_id is not set"
             )