refactoring, file packet

MySolution/STcpHelper/Packet/ISTcpAsyncPacket.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STcpHelper.Packet
+{
+    public interface ISTcpAsyncPacket
+    {
+        Task<byte[]> Serialize();
+    }
+}