Starting attempt to implement the new rust time transfer server

file/local_server/LocalFileTransfer.cpp

@@ -181,8 +181,10 @@ std::shared_ptr<ExecuteResponse<TransferInitError, std::shared_ptr<Transfer>>> L
     transfer->client_id = info.client_id;
 
     constexpr static std::string_view kTokenCharacters{"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"};
-    for(auto& c : transfer->transfer_key)
+    transfer->transfer_key.resize(TRANSFER_KEY_LENGTH);
+    for(auto& c : transfer->transfer_key) {
         c = kTokenCharacters[transfer_random_token_generator() % kTokenCharacters.length()];
+    }
     transfer->transfer_key[0] = (char) 'r'; /* (114) */ /* a non valid SSL header type to indicate that we're using a file transfer key and not doing a SSL handshake */
     transfer->transfer_key[1] = (char) 'a'; /* ( 97) */
     transfer->transfer_key[2] = (char) 'w'; /* (119) */