fix formatting

RyuSocks/Packets/Auth/Constants.cs

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) RyuSOCKS
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 namespace RyuSocks.Packets.Auth
 {
     public static class Constants

RyuSocks/Packets/Auth/UsernameAndPassword/UsernameAndPasswordRequest.cs

@@ -23,7 +23,6 @@ namespace RyuSocks.Packets.Auth.UsernameAndPassword
 {
     public class UsernameAndPasswordRequest : Packet
     {
-
         public byte Version
         {
             get
@@ -56,6 +55,8 @@ public string Username
             }
             set
             {
+                ArgumentOutOfRangeException.ThrowIfGreaterThan(value.Length, 0xFF);
+                UsernameLength = (byte)value.Length;
                 Encoding.ASCII.GetBytes(value).CopyTo(Bytes.AsSpan(2, UsernameLength));
             }
         }