Connections are not Disconnected before an Entity is Closed

leads/comm/prototype.py

@@ -162,7 +162,10 @@ def disconnect(self) -> None:
         """
         Request disconnection.
         """
-        self.send(b"disconnect")
+        try:
+            self.send(b"disconnect")
+        except IOError:
+            return
 
     @_abstractmethod
     def close(self) -> None:
@@ -229,14 +232,13 @@ def send(self, msg: bytes) -> None:
         :param msg: the message to send
         """
         self._require_open_socket().send(msg + self._separator)
-        if msg == b"disconnect":
-            self.close()
 
     @_override
     def close(self) -> None:
         """
         Close the connection.
         """
+        self.disconnect()
         self._on_close(self)
         self._require_open_socket(False).close()
 

leads_comm_serial/connection.py

@@ -40,9 +40,8 @@ def receive(self, chunk_size: int = 1) -> bytes | None:
     @_override
     def send(self, msg: bytes) -> None:
         self._require_open_serial().write(msg + self._separator)
-        if msg == b"disconnect":
-            self.close()
 
     @_override
     def close(self) -> None:
+        self.disconnect()
         self._require_open_serial(False).close()