c#实现 secs/gem代码

SECS/GEM（SEMI Equipment Communications Standard/Generic Equipment Model）是一种用于半导体设备之间的通信协议，以下是使用C#实现的示例代码：

using System;
using System.IO;
using System.Net.Sockets;
using System.Threading.Tasks;

namespace SecsGemExample
{
    public class SecsGem
    {
        private readonly TcpClient _tcpClient;
        private readonly NetworkStream _stream;
        private readonly BinaryReader _reader;
        private readonly BinaryWriter _writer;
        private readonly TaskCompletionSource<byte[]> _responseReceived;

        private readonly byte[] _header = new byte[10];

        public SecsGem(string ipAddress, int port)
        {
            _tcpClient = new TcpClient(ipAddress, port);
            _stream = _tcpClient.GetStream();
            _reader = new BinaryReader(_stream);
            _writer = new BinaryWriter(_stream);
            _responseReceived = new TaskCompletionSource<byte[]>();
        }

        public async Task<byte[]> Send(byte[] message)
        {
            await _stream.WriteAsync(message, 0, message.Length);

            var responseTask = _responseReceived.Task;
            var timeoutTask = Task.Delay(5000); // 5 second timeout

            if (await Task.WhenAny(responseTask, timeoutTask) == timeoutTask)
            {
                throw new TimeoutException("SECS/GEM response timed out.");
            }

            return await responseTask;
        }

        public void StartListening()
        {
            var readTask = Task.Run(async () =>
            {
                while (true)
                {
                    await _stream.ReadAsync(_header, 0, _header.Length);

                    int length = (_header[2] << 8) + _header[3];
                    byte[] data = new byte[length];
                    await _stream.ReadAsync(data, 0, length);

                    _responseReceived.SetResult(data);
                }
            });
        }

        public void Stop()
        {
            _tcpClient.Close();
        }
    }
}

使用示例：

var secsGem = new SecsGem("127.0.0.1", 5000);
secsGem.StartListening();

byte[] message = { 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04 };
byte[] response = await secsGem.Send(message);

Console.WriteLine(BitConverter.ToString(response));

这段代码会连接到IP地址为127.0.0.1，端口为5000的SECS/GEM服务器，并发送一个12字节的消息，然后等待响应，最后打印响应的十六进制表示。需要根据具体的SECS/GEM协议进行调整。