using System;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

public static class SocketSerialization
{
    public static SocketMessageData Serialize(object obj)
    {
        using (var memoryStream = new MemoryStream())
        {
            new BinaryFormatter().Serialize(memoryStream, obj);
            var data = new SocketMessageData {TotalSize = (int)memoryStream.Length};
            data.Bytes = new byte[data.TotalSize + 4];
            var lengthBytes = BitConverter.GetBytes(data.TotalSize);
            Array.Copy(lengthBytes, data.Bytes, lengthBytes.Length);
            Array.Copy(memoryStream.ToArray(), 0, data.Bytes, lengthBytes.Length, data.TotalSize);
            return data;
        }
    }

    public static object Deserialize(SocketMessageData message)
    {
        using (var memoryStream = new MemoryStream(message.Bytes))
        {
            return new BinaryFormatter().Deserialize(memoryStream);
        }
    }

    public class SocketMessageData
    {
        public int TotalSize;
        public byte[] Bytes = new byte[0];
    }
}