Added table persist on local client disconnect

RNS/Identity.py

@@ -110,7 +110,9 @@ class Identity:
     def save_known_destinations():
         # TODO: Improve the storage method so we don't have to
         # deserialize and serialize the entire table on every
-        # save, but the only changes.
+        # save, but the only changes. It might be possible to
+        # simply overwrite on exit now that every local client
+        # disconnect triggers a data persist.
         
         try:
             if hasattr(Identity, "saving_known_destinations"):

RNS/Interfaces/LocalInterface.py

@@ -246,6 +246,7 @@ class LocalClientInterface(Interface):
             RNS.Transport.local_client_interfaces.remove(self)
             if hasattr(self, "parent_interface") and self.parent_interface != None:
                 self.parent_interface.clients -= 1
+                RNS.Transport.owner._should_persist_data()
 
         if nowarning == False:
             RNS.log("The interface "+str(self)+" experienced an unrecoverable error and is being torn down. Restart Reticulum to attempt to open this interface again.", RNS.LOG_ERROR)

RNS/Reticulum.py

@@ -938,6 +938,9 @@ class Reticulum:
 
                 RNS.Transport.interfaces.append(interface)
 
+    def _should_persist_data(self):
+        self.__persist_data()
+
     def __persist_data(self):
         RNS.Transport.persist_data()
         RNS.Identity.persist_data()