通过 Owin 托管 Web API 2 的 Windows 服务启动并立即停止，没有抛出任何异常

标题总结了我的问题。我有try-catch服务周围的街区OnStart方法和Main服务中的方法，并且不会抛出任何异常。该服务启动并立即停止，并显示以下消息：

本地计算机上的 Foo 服务启动然后停止。一些 如果其他服务未使用服务，则服务会自动停止 或程序。

在测试服务器上可以观察到相同的行为，因此它不依赖于机器。我已验证配置文件是否存在并且包含适当的设置。

我看不出发生这种情况的任何明显原因。有人可以看一下这个并解释一下吗？我咨询过其他类似的问题，但没有一个问题对这项特定服务有任何启发。

启动.cs：

public class Startup
{
    // This code configures Web API. The Startup class is specified as a type
    // parameter in the WebApp.Start method.
    public void Configuration(IAppBuilder appBuilder)
    {
        // Configure Web API for self-host.
        var config = new HttpConfiguration();
        config.MapHttpAttributeRoutes();
        appBuilder.UseWebApi(config);
    }
}

WebApiService.cs：

public partial class WebApiService : ServiceBase
{
    private readonly IConfig config;
    private IDisposable webApp;

    public WebApiService()
    {
        try
        {
            InitializeComponent();
            this.config = UnityBootstrapper.Initialize().Resolve<IConfig>();
        }
        catch (Exception e)
        {
            new ApplicationEventLog(new Config()).WriteError(e);
        }
    }

    protected override void OnStart(string[] args)
    {
        try
        {
            var baseUrl = $"http://*:{this.config.WebApiHttpPort}";

            this.webApp = WebApp.Start<Startup>(baseUrl);
        }
        catch (Exception e)
        {
            new ApplicationEventLog(this.config).WriteError(e);
        }
    }

    protected override void OnStop()
    {
        this.webApp?.Dispose();
        this.webApp = null;
    }

    protected override void OnShutdown()
    {
        this.webApp?.Dispose();
        this.webApp = null;
    }
}

WebApiService.Designer.cs

partial class WebApiService
{
    /// <summary> 
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Component Designer generated code

    /// <summary> 
    /// Required method for Designer support - do not modify 
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        components = new System.ComponentModel.Container();
        this.ServiceName = "Foo";
    }

    #endregion
}

程序.cs：

public static class Program
{
    public static bool IsConsoleApp = false;
    public static bool LogRequests = false;

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    public static void Main(params string[] args)
    {
        try
        {
            if (args.Length > 0 && args.Any(a => a.ToLower().In("l", "-l", "/l")))
            {
                LogRequests = true;
            }

            if (args.Length > 0
                && args[0].ToLower().In("c", "-c", "/c"))
            {
                RunAsApp();
            }
            else
            {
                RunAsService();
            }
        }
        catch (Exception e)
        {
            new ApplicationEventLog(new Config()).WriteError(e);
        }
    }

    private static void RunAsService()
    {
        Program.IsConsoleApp = false;

        var servicesToRun = new ServiceBase[]
                                      {
                                          new WebApiService()
                                      };
        ServiceBase.Run(servicesToRun);
    }

    private static void RunAsApp()
    {
        Program.IsConsoleApp = true;

        var config = UnityBootstrapper.Initialize().Resolve<IConfig>();
        var url = $"http://*:{config.WebApiHttpPort}";

        Console.WriteLine($@"Running. Hosted at: {url}");
        Console.WriteLine(@"Press ENTER to exit.");

        using (WebApp.Start<Startup>(url))
        {
            while (Console.ReadKey().Key != ConsoleKey.Enter)
            {
                Thread.Sleep(0);
            }
        }

        Program.IsConsoleApp = false;
    }
}

日志控制器.cs：

[RoutePrefix("api/log")]
public class LogController : ApiController
{
    private readonly ILogger logger;
    private readonly IContextFactory contextFactory;
    private readonly IConfig config;

    public LogController() : base()
    {
        var container = UnityBootstrapper.Initialize();

        this.logger = container.Resolve<ILogger>();
        this.config = container.Resolve<IConfig>();
        this.contextFactory = container.Resolve<IContextFactory>();
    }

    [HttpGet]
    [Route("Status")]
    public string Status()
    {
    }

    [HttpPost]
    [Route("Message")]
    public string Write([FromBody] LogMessage logMessage)
    {
        // Elided for ... reasons
    }

    [HttpPost]
    [Route("Performance")]
    public string Write([FromBody] PerformanceMessage performanceMessage)
    {
        // Elided for ... reasons
    }
}

Edit：添加了 WebApiService.Designer.cs，因为服务从 InitializeComponent 返回时会关闭。

Edit 2: 我已经追踪到了WebApp.Start<Startup>(baseUrl) in WebApiService.cs. A 目标调用异常被抛出，带有HttpListenerException作为内部异常。 HttpListenerException 上的消息是“访问被拒绝”。

System.Reflection.TargetInvocationException occurred
  HResult=0x80131604
  Message=Exception has been thrown by the target of an invocation.
  Source=mscorlib
  StackTrace:
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.Owin.Hosting.ServerFactory.ServerFactoryAdapter.Create(IAppBuilder builder)
   at Microsoft.Owin.Hosting.Engine.HostingEngine.StartServer(StartContext context)
   at Microsoft.Owin.Hosting.Engine.HostingEngine.Start(StartContext context)
   at Microsoft.Owin.Hosting.Starter.DirectHostingStarter.Start(StartOptions options)
   at Microsoft.Owin.Hosting.Starter.HostingStarter.Start(StartOptions options)
   at Microsoft.Owin.Hosting.WebApp.StartImplementation(IServiceProvider services, StartOptions options)
   at Microsoft.Owin.Hosting.WebApp.Start(StartOptions options)
   at Microsoft.Owin.Hosting.WebApp.Start[TStartup](StartOptions options)
   at Microsoft.Owin.Hosting.WebApp.Start[TStartup](String url)
   at Foo.Logging.WebApi.WebApiService.OnStart(String[] args) in C:\Dev\Foo\Foo.WebApi\WebApiService.cs:line 45

Inner Exception 1:
HttpListenerException: Access is denied

我研究了造成这种情况的可能原因，可能是 URL 或 ACL。我将网址更改为http://+:{this.config.WebApiHttpPort}，无济于事。然后我创建了一个 ACL，如下所示：

netsh http add urlacl http://+:8089/ user=Everyone

错误仍然发生。