feat: connexion state reporting from operator

operators.py

@@ -98,8 +98,6 @@ class SessionStartOperator(bpy.types.Operator):
                 port=settings.port
             )
             settings.is_admin = True
-            if settings.init_scene:
-                init_supported_datablocks(supported_bl_types)
         else:
             client.connect(
                 id=settings.username,
@@ -107,6 +105,15 @@ class SessionStartOperator(bpy.types.Operator):
                 port=settings.port
             )
     
+        if client.state == 0:
+            self.report(
+                {'ERROR'},
+                "A session is already hosted on this address")
+            return {"CANCELLED"}
+
+        if settings.init_scene and settings.is_admin:
+            init_supported_datablocks(supported_bl_types)
+
         usr = presence.User(
             username=settings.username,
             color=(settings.client_color.r,
@@ -128,7 +135,9 @@ class SessionStartOperator(bpy.types.Operator):
 
         for d in delayables:
             d.register()
-
+        self.report(
+                {'INFO'},
+                "connexion on tcp://{}:{}".format(settings.ip,settings.port))
         return {"FINISHED"}
 
 
@@ -155,7 +164,6 @@ class SessionStopOperator(bpy.types.Operator):
 
         presence.renderer.stop()
 
-
         return {"FINISHED"}