Updated to 8.2.0.31429 (scripts disabled atm, they still need updated)

Code Port from TrinityCore https://github.com/TrinityCore/TrinityCore
Casc from WoW-Tools https://github.com/WoW-Tools/CASCExplorer

Source/Game/Network/Packet.cs

@@ -108,9 +108,9 @@ namespace Game.Network
             this.opcode = (uint)opcode;
         }
 
-        public WorldPacket(byte[] data, uint opcode) : base(data)
+        public WorldPacket(byte[] data) : base(data)
         {
-            this.opcode = opcode;
+            opcode = ReadUInt16();
         }
 
         public ObjectGuid ReadPackedGuid()
@@ -223,18 +223,23 @@ namespace Game.Network
         uint opcode;
     }
 
-    public class ServerPacketHeader
+    public class PacketHeader
     {
-        public ServerPacketHeader(uint size, ServerOpcodes opcode)
+        public int Size;
+        public byte[] Tag = new byte[12];
+
+        public void Read(byte[] buffer)
         {
-            Size = size + 2;
-            Opcode = opcode;
+            Size = BitConverter.ToInt32(buffer, 0);
+            Buffer.BlockCopy(buffer, 4, Tag, 0, 12);
+        }
 
-            data = BitConverter.GetBytes(Size).Combine(BitConverter.GetBytes((ushort)opcode));
-        }        
+        public void Write(ByteBuffer byteBuffer)
+        {
+            byteBuffer.WriteInt32(Size);
+            byteBuffer.WriteBytes(Tag, 12);
+        }
 
-        public ServerOpcodes Opcode { get; set; }
-        public uint Size { get; set; }
-        public byte[] data { get; set; }
+        public bool IsValidSize() { return Size < 0x10000; }
     }
 }