SmartDoorLock_G1/Team.Communicate/State/ServerBuffer.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace Team.Communicate.State
{
    public class ServerBuffer
    {
        public Encoding Encoding { get; set; }
        public byte[] Splits { get; set; } = new byte[] { 0x13, 0x10 };
        private readonly MemoryStream _memoryStream;
        public ServerBuffer()
        {
            _memoryStream = new MemoryStream();
        }
        public void WriteBuffer(byte[] buffer, int offset, int length)
        {
            _memoryStream.Write(buffer, offset, length);
        }
        public async Task WriteBufferAsync(byte[] buffer, int offset, int length)
        {
            await _memoryStream.WriteAsync(buffer, offset, length);
        }
        public string GetBuffer()
        {
            var bufferList = new List<byte>();
            while (true)
            {
                var buffer = new byte[1];
                var length = _memoryStream.Read(buffer, 0, buffer.Length);
                
                bufferList.AddRange(buffer);
                var compareData =bufferList.ToArray().Reverse().Take(Splits.Length).Reverse().ToArray();
                var isSplits= Compare(compareData, Splits);
                if (isSplits)
                {
                    return Encoding.GetString(buffer);
                }
            }
        }
        public async Task<string> GetBufferAsync()
        {
            var bufferList = new List<byte>();
            while (true)
            {
                var buffer = new byte[1];
                var length =await _memoryStream.ReadAsync(buffer, 0, buffer.Length);
                if (length==0)
                {
                    await Task.Delay(10);
                    await _memoryStream.FlushAsync();
                    continue;
                }
                bufferList.AddRange(buffer);
                var compareData = bufferList.ToArray().Reverse().Take(Splits.Length).Reverse().ToArray();
                var isSplits = Compare(compareData, Splits);
                if (isSplits)
                {
                    return Encoding.GetString(buffer);
                }
            }
        }
        private bool Compare(byte[] source, byte[] comparedData)
        {
            for (int i = 0; i < source.Length; i++)
            {
                if (comparedData[i] != source[i])
                {
                    return false;
                }
            }
            return true;
        }
    }
}