C# Socket 读取可变长度数据

byte[] allContent = null;
int AllLength = 0;
int count = 0;
int length= 1024;
byte[] readBuff = new byte[length];
List<byte[]> readBuffList = new List<byte[]>();
while (true)
{
    int r = this._clientSocket.Receive(readBuff, 0, length, SocketFlags.None);
    if(r < = 0) break;
    try
    {
        count  += r;
        byte[] curReciveContent = readBuff.Skip(0).Take(r).ToArray();
        if (allLen == 0)
        {
            //数据位长度，在第四位
            byte[] lenBytes = curReciveContent.Skip(4).Take(4).ToArray();
            Array.Reverse(lenBytes);
            allLen = BitConverter.ToInt32(lenBytes, 0);
        }
        if (count == allLen)
        {
            allContent = new byte[length];
            int curIndex = 0;
            for (int i = 0; i < readBuffList.Count; i++)
            {
                byte[] tempReadBuffs = readBuffList[i];
                Array.Copy(tempReadBuffs, 0, allContent, curIndex, tempReadBuffs.Length);
                curIndex += tempReadBuffs.Length;
           }
           break;
        }
    }
}