Error using (WebApp.Start<Startup>(“https://+:8443”))

[imanf94]

I'm trying to make a telegram bot using telegram.bot nuget package and webhook method. So i'm testing this example but i face this error at first line:

An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll

Additional information: Exception has been thrown by the target of an invocation.

Here is my code:

`static void Main(string[] args) {

    using (WebApp.Start<Startup>("https://+:8443"))
    {
        // Register WebHook
        Bot.Api.SetWebhook("https://promoton.ir:8443/WebHook").Wait();

        Console.WriteLine("Server Started");

        // Stop Server after <Enter>
        Console.ReadLine();

        // Unregister WebHook
        Bot.Api.SetWebhook().Wait();
    }
}`

[Olfi01]

in the exception you're getting, is there an inner exception? the error message seems to suggest that

[imanf94]

@Olfi01

inner exception: {"Access is denied"}
 Data: {System.Collections.ListDictionaryInternal}
 Source: System
 StackTrace:    at System.Net.HttpListener.AddAllPrefixes()
   at System.Net.HttpListener.Start()
   at Microsoft.Owin.Host.HttpListener.OwinHttpListener.Start(HttpListener listener, Func`2 appFunc, IList`1 addresses, IDictionary`2 capabilities, Func`2 loggerFactory)
   at Microsoft.Owin.Host.HttpListener.OwinServerFactory.Create(Func`2 app, IDictionary`2 properties)
 TargetSite: {Void AddAllPrefixes()}

[Olfi01]

Seems something is denying the access for the HTTP client, have you checked your firewall's settings?

[imanf94]

@Olfi01 yes it'not the problem. i think, i'm missing something i used this line exactly: using (WebApp.Start("https://+:8443")) but i think i may change + to something or may add username to somewhere (the comments code say) but i don't know how?

[Olfi01]

I'm sorry, but I don't know much about that ASP.NET stuff, try asking @pouladpld or @MrRoundRobin for help :/

[imanf94]

@Olfi01 thank you @MrRoundRobin @pouladpld i will appreciate if you could help me.

[mutluozkurt]

Hi @imanf94, how did you solve this problem?

[imanf94]

I don't remember exactly. But i think the problem was about the required security items such as https certificate or something. Check out the telegram required server items in order to use webhook

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---

From: mutluozkurt notifications@github.com Sent: Saturday, May 2, 2020 3:37:39 AM To: TelegramBots/Telegram.Bot Telegram.Bot@noreply.github.com Cc: imanf94 iman_f94@hotmail.com; Author author@noreply.github.com Subject: Re: [TelegramBots/Telegram.Bot] Error using (WebApp.Start(“https://+:8443”)) (#457)

Hi, how did you solve this problem?

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