ServiceStack 5.13.0 元数据和 swagger-ui 页面在 .NET 6 迁移后返回 500 错误

Posted 2023-02-19

【中文标题】ServiceStack 5.13.0 元数据和 swagger-ui 页面在 .NET 6 迁移后返回 500 错误

【英文标题】：ServiceStack 5.13.0 metadata and swagger-ui pages return a 500 error after .NET 6 migration

【发布时间】：2021-12-26 17:45:38

【问题描述】：

我最近开始将我的微服务迁移到 .NET 6。我从 5.11.0 升级到 ServiceStack 5.13.0，我发现 /metadata 和 /swagger-ui（来自 ServiceStack.Api.OpenApi 包) 页面返回 HTTP 状态代码 500。我没有任何异常。

注意：微服务的其余部分运行良好。我可以毫无问题地拨打其他端点。

但是，当我在 ServiceStack 中启用调试日志时，每当我访问 /metadata 或 /swagger-ui 时都会出现以下异常

[Info] Service is starting up.
info: Microsoft.Hosting.Lifetime[14]
      Now listening on: https://localhost:7058
info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5058
info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Development
info: Microsoft.Hosting.Lifetime[0]
      Content root path: C:\Projects\chargeleo.users.managementservice\Chargeleo.Users.ManagementService.Web\
fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HMD882JRAOH5", Request id "0HMD882JRAOH5:00000007": An unhandled exception was thrown by the application.
      System.InvalidOperationException: An asynchronous socket operation is already in progress using this SocketAsyncEventArgs instance.
         at System.Net.Sockets.SocketAsyncEventArgs.ThrowForNonFreeStatus(Int32 status)
         at System.Net.Sockets.SocketAsyncEventArgs.set_BufferList(IList`1 value)
         at Microsoft.WebTools.BrowserLink.Net.SocketAdapter.SendAsync(IList`1 buffers)
      --- End of stack trace from previous location ---
         at Microsoft.WebTools.BrowserLink.Net.DelayConnectingHttpSocketAdapter.Microsoft.WebTools.BrowserLink.Net.IHttpSocketAdapter.CompleteRequestAsync()
         at Microsoft.WebTools.BrowserLink.Net.ScriptInjectionFilterStream.WaitForFilterCompleteAsync()
         at Microsoft.WebTools.BrowserLink.Net.BrowserLinkMiddleware.ExecuteWithFilterAsync(IHttpSocketAdapter injectScriptSocket, String requestId, HttpContext httpContext)
         at Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(HttpContext context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)
fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HMD882JRAOH6", Request id "0HMD882JRAOH6:00000001": An unhandled exception was thrown by the application.
      System.InvalidOperationException: Attempted to send data when a send was already in progress.
         at Microsoft.WebTools.BrowserLink.Net.DelayConnectingHttpSocketAdapter.Microsoft.WebTools.BrowserLink.Net.IHttpSocketAdapter.CompleteRequestAsync()
         at Microsoft.WebTools.BrowserLink.Net.ScriptInjectionFilterStream.WaitForFilterCompleteAsync()
         at Microsoft.WebTools.BrowserLink.Net.BrowserLinkMiddleware.ExecuteWithFilterAsync(IHttpSocketAdapter injectScriptSocket, String requestId, HttpContext httpContext)
         at Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(HttpContext context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)

在迁移到 .NET 6 之前没有发生这种情况。两个页面都运行良好。我的启动代码如下：

Program.cs

using System.Diagnostics;
using ServiceStack;

var builder = WebApplication.CreateBuilder(args);

Debug.WriteLine(builder.Configuration["Environment"]);

var app = builder.Build();
app.UseServiceStack(new AppHost(builder.Configuration["Environment"]));

if (!app.Environment.IsDevelopment())

    app.UseHsts();
    app.UseHttpsRedirection();


app.Run();

AppHost.cs：

using Funq;
using ServiceStack;
using Chargeleo.Users.ManagementService.Common;

namespace Chargeleo.Users.ManagementService.Web;

public class AppHost : AppHostBase

    private AppConfigurator _configurator;
    private readonly string _environment;

    public AppHost(string environment) : base(ServiceConstants.ServiceName, typeof(AppConfigurator).Assembly)
    
        _environment = environment;
    

    public override void Configure(Container container)
    
        _configurator = new AppConfigurator(this, _environment);
    

AppConfigurator.cs中ServiceStack相关代码

appHost.SetConfig(new HostConfig  DebugMode = true );
appHost.Plugins.Add(new CorsFeature());
appHost.Plugins.Add(new ValidationFeature());
appHost.Plugins.Add(new OpenApiFeature());

我似乎无法弄清楚问题是什么，任何输入都将受到高度赞赏，非常感谢。

【问题讨论】：

此异常来自 BrowserLink，这是 VS 通常添加的开发时间功能。当您在本地运行时是否仍然发生异常，例如从命令行使用dotnet run？

@mythz 不，它没有。似乎与 dotnet run 一起工作正常。我通过 Visual Studio 的调试功能运行我的代码。有什么方法可以禁用 BrowserLink？我根本没有使用过 dotnet run，所以我不太熟悉它，我不知道如何在不从 VS 本身运行的情况下调试我的代码。

不要使用 VS，而是用谷歌搜索我 found these answers on disabling BrowserLink，因为这是 VS BrowserLink 的问题，您可以 report an Issue from VS。

【参考方案1】：

在听从了 myz 的建议后，我想出了如何解决这个问题。问题确实是 BrowserLink 和新的热重载功能。

禁用热重载功能可以解决问题。

我按照这里的说明进行操作： How to disable Browser Link in ASP.NET Core (.NET 6, VS 2022)