adapt based start

Adapt the initialization and starting of based to the latest changes in
the based code.

Signed-off-by: hwipl <33433250+hwipl@users.noreply.github.com>

nuqql_slixmppd/server.py

@@ -37,6 +37,12 @@ class BackendServer:
     def __init__(self) -> None:
         self.connections: Dict[int, BackendClient] = {}
         self.threads: Dict[int, Tuple[Thread, Event]] = {}
+        self.based = Based("slixmppd", VERSION)
+
+    def start(self) -> None:
+        """
+        Start server
+        """
 
         # register callbacks
         callbacks = [
@@ -59,15 +65,9 @@ def __init__(self) -> None:
             (Callback.CHAT_USERS, self.enqueue),
             (Callback.CHAT_INVITE, self.enqueue),
         ]
+        self.based.set_callbacks(callbacks)
 
         # start based
-        self.based = Based("slixmppd", VERSION, callbacks)
-
-    def start(self) -> None:
-        """
-        Start server
-        """
-
         self.based.start()
 
     def enqueue(self, account_id: int, cmd: Callback, params: Tuple) -> str: