golang做服务器，C#(unity)作为客户端，Socket通信问题

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
[Serializable]
public class Message
{
    public string execute_type;
    public string struct_name;
    public string data;
}
class util
{
    /// <summary>
    /// 包装数据
    /// </summary>
    /// <param name="data"></param>
    /// <param name="exeCuteType"></param>
    /// <param name="className"></param>
    public static byte[] PackageData(object data,string exeCuteType,string className)
    {
        string jsonData = JsonConvert.SerializeObject(data);
        
        //byte[] byteData = Encoding.UTF8.GetBytes(jsonStr);
        Message message = new Message();
        message.struct_name = className;
        message.data = jsonData;
        message.execute_type = exeCuteType;

        
        byte[] byteData =Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(message));
        Int32 len = byteData.Length;
        byte[] lenData = BitConverter.GetBytes(len);
        byte[] finalData = new byte[lenData.Length + byteData.Length];
        lenData.CopyTo(finalData, 0);
        byteData.CopyTo(finalData, 4);
        return finalData;
        
    }
    /// <summary>
    /// 拆分数据
    /// </summary>
    /// <param name="data"></param>
    /// <returns></returns>
    public static Message UnPackageData(byte[] data)
    {
        Int32 len = BitConverter.ToInt32(data, 0);
        System.Console.WriteLine(len);
        byte[] strByte = new byte[len];
        Array.Copy(data,4,strByte,0,len);
        Message message = JsonConvert.DeserializeObject<Message>(Encoding.UTF8.GetString(strByte));
        return message;

    }
}

//没有go？？
//包装数据
func  PackageData(data interface{},executeType string,structType string)[]byte{
    dataByte,err:=json.Marshal(&data)
    if err!=nil{
        config.Logger.Fatalln("解析出错",err)
    }
    strJson:=string(dataByte)
    msg:=Message{}
    msg.ExecuteType=executeType
    msg.Data=strJson
    msg.StructName=structType
    finalData,err:=json.Marshal(&msg)
    if err!=nil{
        log.Fatalln("解析失败",err)
    }
    var lenByte =make([]byte,4)
    length:=uint32(len(finalData))
    binary.LittleEndian.PutUint32(lenByte,length)


    allData:=[][]byte{lenByte,finalData}
    newData:=bytes.Join(allData,[]byte(""))

    return newData

}
//解析数据
func UnPackageData(data []byte)(Message, error){
    //println("总长度=:",len(data))
    mes:=Message{}
    //utf8.
    byteBuffer:=bytes.NewBuffer(data[0:4])
    var dataLen int32
    err:=binary.Read(byteBuffer,binary.LittleEndian,&dataLen)//binary.BigEndian.Uint32(data[:4])
    if err!=nil{
        config.Logger.Println(err)
    }
    err=json.Unmarshal(data[4:4+dataLen],&mes)
    if err!=nil{
        fmt.Println("解析失败",err)
    }

    return mes,err
}