mark node as bad if it returns difficulty 100

ts/session/snode_api/serviceNodeAPI.ts

@@ -327,6 +327,15 @@ export async function storeOnNode(
         return false;
       } else if (e instanceof textsecure.WrongDifficultyError) {
         const { newDifficulty } = e;
+        // difficulty of 100 happens when a snode restarts. We have to exit the loop and markNodeUnreachable()
+        if (newDifficulty === 100) {
+          log.warn(
+            'loki_message:::storeOnNode - invalid new difficulty:100. Marking node as bad.'
+          );
+          successiveFailures = MAX_ACCEPTABLE_FAILURES;
+          continue;
+        }
+
         if (!Number.isNaN(newDifficulty)) {
           window.storage.put('PoWDifficulty', newDifficulty);
         }