Address comments

src/Mesh.cpp

@@ -145,7 +145,7 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
         // FUTURE: could send back multiple paths, using createPathReturn(), and let sender choose which to use(?)
 
         if (self_id.isHashMatch(&dest_hash)) {
-          // scan contacts DB, for all matching hashes of 'src_hash' (max 4 matches supported ATM)
+          // scan contacts DB, for all matching hashes of 'src_hash' (max 8 matches supported ATM)
           int num = searchPeersByHash(&src_hash);
           // for each matching contact, try to decrypt data
           bool found = false;

src/helpers/BaseChatMesh.cpp

@@ -1208,7 +1208,7 @@ bool BaseChatMesh::shouldInitiateSessionKey(const ContactInfo& contact) {
   if (!(contact.flags & CONTACT_FLAG_AEAD)) return false;
 
   // Need a known path to send the request
-  if (contact.out_path_len < 0) return false;
+  if (contact.out_path_len == OUT_PATH_UNKNOWN) return false;
 
   auto entry = findSessionKey(contact.id.pub_key);
 
@@ -1443,9 +1443,9 @@ void BaseChatMesh::onSessionKeyDecryptSuccess(int peer_idx) {
       if (changed) {
         memset(entry->prev_session_key, 0, SESSION_KEY_SIZE);
         entry->state = SESSION_STATE_ACTIVE;
+        onSessionKeysUpdated();
       }
       entry->sends_since_last_recv = 0;
-      if (changed) onSessionKeysUpdated();
     }
   }
 }