VSCoding调试返回"An unhandled exception occurred while processing the request"

Question

我正在尝试调试dotnet react应用程序。" dotnet run"工作正常。但是，在VSCODE上调试我的dotnet React应用程序返回" Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.PerformProxyRequest(HttpContext context, HttpClient httpClient, Task<Uri> baseUriTask, CancellationToken applicationStoppingToken, bool proxy404s)上的contection"

我正在制作的应用程序具有dotnet核心后端，并作为前端做出反应，这是Microsoft Spa Services使其成为可能的。我尝试了许多为其他人工作的修复程序，例如升级我的dotnet-sdk，但我仍然会遇到问题。

这是我的启动。json配置

{
            "name": ".NET Core Launch (web)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            // If you have changed target frameworks, make sure to update the program path.
            "program": "${workspaceFolder}/bin/Debug/netcoreapp2.2/debate.dll",
            "args": [],
            "cwd": "${workspaceFolder}",
            "stopAtEntry": false,
            // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser
            "serverReadyAction": {
                "action": "openExternally",
                "pattern": "^\s*Now listening on:\s+(https?://\S+)"                
            },
            "env": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "sourceFileMap": {
                "/Views": "${workspaceFolder}/Views"
            }
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        }
    ]```

This is my build task
```"tasks": [
        {
            "label": "build",
            "command": "dotnet",
            "type": "process",
            "args": [
                "build",
                "${workspaceFolder}/debate.csproj"
            ],
            "problemMatcher": "$tsc"
        }

在我的startup.cs中，我无法通过此行调试 spa.UseReactDevelopmentServer(npmScript: "start");

这是错误消息回收

fail: Microsoft.AspNetCore.SpaServices[0]
      events.js:183
Microsoft.AspNetCore.SpaServices:Error: events.js:183
fail: Microsoft.AspNetCore.SpaServices[0]
            throw er; // Unhandled 'error' event

在浏览器上，我得到

System.Net.Http.ConnectHelper.ConnectAsync(string host, int port, CancellationToken cancellationToken)
System.Threading.Tasks.ValueTask<TResult>.get_Result()
System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
System.Threading.Tasks.ValueTask<TResult>.get_Result()
System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask<ValueTuple<HttpConnection, HttpResponseMessage>> creationTask)
System.Threading.Tasks.ValueTask<TResult>.get_Result()
System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, bool doRequestAuth, CancellationToken cancellationToken)
System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task<HttpResponseMessage> sendTask, HttpRequestMessage request, CancellationTokenSource cts, bool disposeCts)
Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.PerformProxyRequest(HttpContext context, HttpClient httpClient, Task<Uri> baseUriTask, CancellationToken applicationStoppingToken, bool proxy404s)```
I was able to reproduce the error 'dotnet run' instead of 'sudo donet run'.

Answer 1

我注意到即使停止调试后，节点proccess也不会结束。因此