NancyFx与Owin一起使用时出现503错误 [英] 503 Error when using NancyFx with Owin

问题描述

我正在尝试将NancyFx与SignalR结合使用.为了同时托管这两个主机，我使用的是Microsoft Owin.但是，不幸的是，当我尝试通过PostMen(适用于Chrome浏览器的REST-Api客户端扩展)访问REST-API时，总是收到503(服务不可用).因此，我将主要成分提取到了一个更简单的程序中，该程序使我可以在Nancy Selfhost和Owin之间切换. 使用Nancy SelfHost时，一切正常，但是使用Owin，我仍然遇到503错误.

I'm trying to use NancyFx in combination with SignalR. In order to host both, I'm using Microsoft Owin. But unfortunately I always get an 503 (Service unavailable), when trying to access the REST-API via PostMen (REST-Api Client extension for chromium browsers). So I extracted the main ingredients to a more simple program, that allows me to switch between Nancy Selfhost and Owin. When using Nancy SelfHost, everything works fine, but using Owin I still got a 503 error.

internal class Program {
    private const bool _USE_SELF_HOST = false;

    private static void Main(string[] args) {
        if (_USE_SELF_HOST) {
            var host = "http://localhost:7084";
            UseSelfHost(host);
        } else {
            var host = "http://localhost:7084";
            UsingWebApp(host);
        }
    }

    private static void UseSelfHost(string host) {
        var webhost = new NancyHost(new Uri(host));
        webhost.Start();

        Console.ReadLine();
        webhost.Stop();
    }

    private static void UsingWebApp(string host) {
        var nancyHost = WebApp.Start<Startup>(host);
        Console.WriteLine($"Nancy started at {host}");
        Console.ReadLine();
        nancyHost.Dispose();
    }

}

public class MainModule : NancyModule {
    public MainModule() {
        Get["/"] = x => "Hello world!";
    }
}

我检查了:

• netsh http show urlacl-我可以打开此端口
• Visual Studio以管理员权限运行，除此之外不需要.

推荐答案

我的一位同事在我的netsh配置中发现错误.我在同一个tcp端口上有两个urlacls:

A colleague of mine found an error in my netsh configuration. I had two urlacls for the same tcp port:

Reservierte URL            : http://wks-user:7084/
    Benutzer: DOMAIN\user
        Abh▒ren: Yes
        Delegieren: No
        SDDL: D:(A;;GX;;;XXX)

Reservierte URL            : http://+:7084/
    Benutzer: DOMAIN\user
        Abh▒ren: Yes
        Delegieren: No
        SDDL: D:(A;;GX;;;XXX)

通过

netsh http delete urlacl http://wks-user:7084/

一切正常.

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