hslcommunication心跳处理

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字数统计: 231 | 阅读时长 ≈ 1

利用hslcommunication库定时发送心跳信号，判断网络状态是否良好。

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using System;
using System.Threading;
using System.Threading.Tasks;
using HslCommunication;
using HslCommunication.Core.Net;

public class HeartBeatClient
{
    private readonly EasyTcpClient _client;
    private readonly CancellationTokenSource _cancellationTokenSource;

    public HeartBeatClient()
    {
        _cancellationTokenSource = new CancellationTokenSource();
        _client = new EasyTcpClient();

        _clientHeartbeatInterval = 5000;

        _client.ConnectTimeOut = 5000;
        _client.HeartBeatTimeOut = 10000;

        _client.ReceiveTimeout = 5000;
        _client.SendTimeout = 5000;

        _client.OnNetworkError += OnNetworkError;
    }

    public async Task ConnectAsync(string ipAddress, int port)
    {
        await _client.ConnectAsync(ipAddress, port, _cancellationTokenSource.Token);
        StartHeartbeatThread();
    }

    private readonly int _clientHeartbeatInterval;
    private void StartHeartbeatThread()
    {
        Task.Factory.StartNew(async () =>
        {
            while (!_cancellationTokenSource.IsCancellationRequested)
            {
                try
                {
                    // 发送心跳
                    _client.Send(new byte[] { 0x0 });

                    await Task.Delay(_clientHeartbeatInterval, _cancellationTokenSource.Token);
                }
                catch (OperationCanceledException)
                {
                    break;
                }
                catch (Exception ex)
                {
                    OnNetworkError(_client, ex);
                }
            }
        }, _cancellationTokenSource.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
    }

    public bool IsConnected
    {
        get => _client.IsConnected;
    }

    public void Disconnect()
    {
        _cancellationTokenSource.Cancel();
        _client.Disconnect();
    }

    private void OnNetworkError(object sender, Exception e)
    {
        // TODO: 处理网络错误
    }
}
// 可以根据自己的需求调整心跳时间和超时时间，另外，对于网络错误也需要在 OnNetworkError 函数中做相应的处理。