Question

开发.NET Web Api（使用OWIN）和使用web api的ember应用程序。 web api托管在azure（api app）上。问题是有时选项调用失败（500错误）并且gui挂起。如果我再次触发选项调用它再次起作用。如果我在我的本地IIS上运行api，这个问题永远不会发生。当我没有做任何事情/在Web应用程序中触发任何ajax调用一段时间（5分钟）时，问题最常发生。任何线索为什么会发生这种情况？

这是我的启动配置：

public partial class
    Startup
{
    public void Configuration(IAppBuilder app)
    {
        //enable cors
        app.UseCors(CorsOptions.AllowAll);


        //enable hangfire
        Hangfire.GlobalConfiguration.Configuration
            .UseSqlServerStorage("DbConnection")
            .UseActivator(new StructureMapJobActivator(IoC.Initialize()));

        app.UseHangfireDashboard();
        app.UseHangfireServer();

        //automapper
        AutoMapperBootstrapper.Bootstrap();

        //oauth 2
        var userManager = new UserManager();

        var authConfig = new SentinelAuthorizationServerOptions()
            {
                UserManager = userManager,
                ClientManager = new ClientManager(),
            };

        var shaProvider = new SHA2CryptoProvider();

        var onBoardTokenRepository = new OnBoardTokenRepository(new ConnectionFactory(new Configuration()), "DbConnection");
        authConfig.TokenManager = new TokenManager(LogManager.GetLogger<Startup>(), userManager, new PrincipalProvider(shaProvider), shaProvider, new TokenFactory(), onBoardTokenRepository);

        app.UseSentinelAuthorizationServer(authConfig);

        GlobalConfiguration.Configure(WebApiConfig.Register);
    }

我在azure事件日志中发现了这个错误：

   https://microsoft-apiapp08044e6364624e2e88cfda954ace012a.azurewebsites.net:443/job/getemployerjobs/job/getemployerjobs104.45.82.120FalseIIS APPPOOL\Microsoft-ApiApp08044e6364624e2e88cfda954ace012a108IIS APPPOOL\Microsoft-ApiApp08044e6364624e2e88cfda954ace012aFalse   at System.Web.HttpHeaderCollection.SetHeader(String name, String value, Boolean replace)
   at System.Web.HttpHeaderCollection.Set(String name, String value)
   at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.Set(String key, String[] values)
   at Microsoft.Owin.Host.SystemWeb.CallHeaders.AspNetResponseHeaders.set_Item(String key, String[] value)
   at Microsoft.Owin.Infrastructure.OwinHelpers.SetHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
   at Microsoft.Owin.Infrastructure.OwinHelpers.AppendHeaderUnmodified(IDictionary`2 headers, String key, String[] values)
   at Microsoft.Owin.HeaderDictionary.AppendValues(String key, String[] values)
   at Microsoft.Owin.Security.OAuth.OAuthBearerAuthenticationProvider.<.ctor>b__2(OAuthChallengeContext context)
   at Microsoft.Owin.Security.OAuth.OAuthBearerAuthenticationProvider.ApplyChallenge(OAuthChallengeContext context)
   at Microsoft.Owin.Security.OAuth.OAuthBearerAuthenticationHandler.ApplyResponseChallengeAsync()
   at Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<ApplyResponseCoreAsync>d__b.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<ApplyResponseAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Security.Infrastructure.AuthenticationHandler.<TeardownAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Security.Infrastructure.AuthenticationMiddleware`1.<Invoke>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Security.Infrastructure.AuthenticationMiddleware`1.<Invoke>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Mapping.MapMiddleware.<Invoke>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Cors.CorsMiddleware.<Invoke>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContextStage.<RunApp>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.<DoFinalWork>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar)
   at Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.IntegratedPipelineContext.EndFinalWork(IAsyncResult ar)
   at System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Answer 1

这似乎与微软的OWIN实施有关：http://katanaproject.codeplex.com/discussions/540202。

相关的拉取请求位于：https://katanaproject.codeplex.com/workitem/263

底层的OWIN OAuth中间件有时候会封锁＆＃34;创建响应时的响应。

Web API CORS OPTION仅在azure上随机返回500

1 个答案: