AggregateException 几个小时后 getUpdate() 方法不起作用

Question

我有一些使用 "bot.telegram" nugget 的电报机器人 C# 应用程序有同样的问题。

我通过 getUpdate() 方法获取用户消息和命令。下面是一个简单的例子：

private void Form1_Load(object sender, EventArgs e)
{
    try
    {
        a = new Thread(new ThreadStart(GetUpdates));
        a.Start();
    }
    catch (Exception ex)
    {
        bot.SendTextMessageAsync({myId}, ex.ToString());
    }
}


public void GetUpdates()
{
    try
    {
        offset = 0;

        while (true)
        {
            updates = bot.GetUpdatesAsync(offset, 100, 360000).Result;

            foreach (var update in updates)
            {
                offset = update.Id + 1;

                if (update.Message == null || update.Message.Text == null)
                    continue;

                switch (update.Message.Text)
                {
                    case "/start":
                        job1();
                        break;
                    case "Msg2":
                        job2();
                        break;
                    case "Msg3":
                        job3();
                        break;
                    default:
                        job(4)
                        break;
                }
            }
        }
    }
    catch (Exception ex)
    {
        bot.SendTextMessageAsync({myId}, ex.ToString());
    }
}

几个小时后（2-24 小时）它停止并且没有收到来自 user.In 的消息 "catch exception" 我收到此错误：

System.AggregateException: One or more errors occurred. ---> Telegram.Bot.Exceptions.ApiRequestException: Request timed out ---> System.Threading.Tasks.TaskCanceledException: A task was canceled. at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Telegram.Bot.TelegramBotClient.d__1251.MoveNext() --- End of inner exception stack trace --- at Telegram.Bot.TelegramBotClient.<SendWebRequestAsync>d__1251.MoveNext() --- End of inner exception stack trace --- at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification) at System.Threading.Tasks.Task1.get_Result() at mahramanehBot.Main.GetUpdates() in C:\Users\Soroush\documents\visual studio 2015\Projects\mahramanehBot\mahramanehBot\Main.cs:line 45 ---> (Inner Exception #0) Telegram.Bot.Exceptions.ApiRequestException: Request timed out ---> System.Threading.Tasks.TaskCanceledException: A task was canceled. at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task) at Telegram.Bot.TelegramBotClient.d__1251.MoveNext() --- End of inner exception stack trace --- at Telegram.Bot.TelegramBotClient.<SendWebRequestAsync>d__1251.MoveNext()<---

我应该怎么做才能让 "getting messages and command from user" 不停地工作？

我通过将此代码放在 "try":

之后解决了这个问题

            catch (AggregateException e)
        {
            Thread a = new Thread(GetUpdates);
            a.Start();
        }

Answer 1

更新可能会超时，您需要处理这个问题 - 我假设应用程序崩溃了？

捕获异常并处理结果（很可能是忽略它）。您可能还需要等待结果。

        while (true)
        {
            try
            {
                updates = await bot.GetUpdatesAsync(offset, 100, 360000);

                foreach (var update in updates)
                {
                    offset = update.Id + 1;

                    if (update.Message == null || update.Message.Text == null)
                    continue;

                    switch (update.Message.Text)
                    {
                        case "/start":
                            job1();
                            break;
                        case "Msg2":
                            job2();
                            break;
                        case "Msg3":
                            job3();
                            break;
                        default:
                            job(4)
                            break;
                    }
                }
           }
           catch (ApiRequestException ex)
           {
                //handle or ignore
           }
        }

Answer 2

通常getUpdates用于调试。要发布您的机器人，您需要使用 Telegram Webhook。 See this.

getUpdates is a pull mechanism, setWebhook is push. There are some advantages of using a Webhook over getUpdates:

Avoids your bot having to ask for updates frequently.

Avoids the need for some kind of polling mechanism in your code.

AggregateException 几个小时后 getUpdate() 方法不起作用

getUpdate() method does not work after some hour by AggregateException

c#

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