Blazor WASM 异常导致数百个额外的套接字和连接异常

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【中文标题】Blazor WASM 异常导致数百个额外的套接字和连接异常【英文标题】：Blazor WASM exception leads to hundreds of additional socket and connection exceptions 【发布时间】：2021-06-20 04:44:51 【问题描述】：

我刚开始学习 Blazor WASM（通常我是后端开发人员），我对经常看到的一些事情感到困惑。

这可能是一个非常菜鸟的问题，但请耐心等待。

为什么 Blazor 经常不停地抛出异常？

它从一个像这样的具体异常开始，我仍然理解这一点（显然作为一个完整的 Blazor 新秀，我不知道自己在做什么；但唯一相关的部分是抛出异常）： 

crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Microsoft.AspNetCore.Components.Forms.InputNumber`1[System.Int32] requires a cascading parameter of type EditContext. For example, you can use Microsoft.AspNetCore.Components.Forms.InputNumber`1[[System.Int32, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]] inside an EditForm.
System.InvalidOperationException: Microsoft.AspNetCore.Components.Forms.InputNumber`1[System.Int32] requires a cascading parameter of type EditContext. For example, you can use Microsoft.AspNetCore.Components.Forms.InputNumber`1[[System.Int32, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]] inside an EditForm.
   at Microsoft.AspNetCore.Components.Forms.InputBase`1[[System.Int32, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].SetParametersAsync(ParameterView parameters)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterView parameters)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(DiffContext& diffContext, Int32 frameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(DiffContext& diffContext, Int32 frameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& diffContext, Int32 newFrameIndex)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& diffContext, Int32 oldStartIndex, Int32 oldEndIndexExcl, Int32 newStartIndex, Int32 newEndIndexExcl)
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer renderer, RenderBatchBuilder batchBuilder, Int32 componentId, ArrayRange`1 oldTree, ArrayRange`1 newTree)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry renderQueueEntry)
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue()

但后来这种情况发生了，而且一直持续下去：

Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.OperationCanceledException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Net.Security.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'Microsoft.AspNetCore.Connections.ConnectionResetException' in System.Private.CoreLib.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.Private.CoreLib.dll

相信我，我只复制了大约 15% 的调试日志。

此外，这样做似乎会导致很多线程陷入困境，因为调试日志的结尾是这样的：

The thread 0x3b00 has exited with code 0 (0x0).
The thread 0x9e68 has exited with code 0 (0x0).
The thread 0xabbc has exited with code 0 (0x0).
The thread 0x23d4 has exited with code 0 (0x0).
The thread 0x6690 has exited with code 0 (0x0).
The thread 0x4934 has exited with code 0 (0x0).
The thread 0x976c has exited with code 0 (0x0).
The thread 0xb908 has exited with code 0 (0x0).
The thread 0x50a0 has exited with code 0 (0x0).
The thread 0xb1bc has exited with code 0 (0x0).
The thread 0xcc5c has exited with code 0 (0x0).
The thread 0x79b4 has exited with code 0 (0x0).
The thread 0x9bd4 has exited with code 0 (0x0).
The thread 0x6980 has exited with code 0 (0x0).
The thread 0x9c98 has exited with code 0 (0x0).
The thread 0xbb90 has exited with code 0 (0x0).
The thread 0x51f0 has exited with code 0 (0x0).
The thread 0x79f4 has exited with code 0 (0x0).
The thread 0x671c has exited with code 0 (0x0).
The thread 0xcac4 has exited with code 0 (0x0).
The thread 0x5b8c has exited with code 0 (0x0).
The thread 0xab64 has exited with code 0 (0x0).
The thread 0x6710 has exited with code 0 (0x0).
The thread 0x7814 has exited with code 0 (0x0).
The thread 0x97dc has exited with code 0 (0x0).
The thread 0x35a0 has exited with code 0 (0x0).
The thread 0xd430 has exited with code 0 (0x0).
The thread 0x9608 has exited with code 0 (0x0).
The thread 0xa85c has exited with code 0 (0x0).
The thread 0x15b0 has exited with code 0 (0x0).
The thread 0xa284 has exited with code 0 (0x0).
The thread 0x5fb4 has exited with code 0 (0x0).
The thread 0xa288 has exited with code 0 (0x0).
The thread 0x529c has exited with code 0 (0x0).
The thread 0x9790 has exited with code 0 (0x0).
The thread 0x8ef8 has exited with code 0 (0x0).
The thread 0x2efc has exited with code 0 (0x0).
The thread 0x9854 has exited with code 0 (0x0).
The thread 0x3e3c has exited with code 0 (0x0).
The thread 0x8e94 has exited with code 0 (0x0).

发生异常的组件非常简单。基本上我只是开始尝试一些领域（正如我所指出的，我显然不知道自己在做什么，但这不相关，除非它直接导致上述异常的洪流）：

@page "/test"

<InputNumber TValue="int" ValueChanged="numberEntered"></InputNumber>

<p>The number you entered is: </p>

<InputText @ref="inputText"></InputText>

@code 
    InputText inputText;

    void numberEntered(int number)
    
        inputText.Value = number.ToString();

【问题讨论】：

你是用dotnet watch run还是Ctrl-F5（如果使用VS2019）运行？ Blazor WebAssembly 中唯一涉及 websocket 的时间是浏览器重新加载功能运行时 @MisterMagoo 是的，我在调试模式下从 VS2019 运行它。 啊，对，所以那些 websocket 错误将来自调试器连接——这可能不高兴，因为应用程序抛出了一个未处理的错误——我建议不要调试 webassembly 版本——它可以工作，但众所周知，它比应有的痛苦更大。如果您需要调试某些东西，您始终可以使用 Blazor Server 项目来调试它，您将获得更好的体验。 【参考方案1】：

你“简单”的一段代码违反了一些规则。

我赞同@MisterMagoo 所说的话。从 Server 入手，让调试更简单。

    输入控件需要在EditForm 内，并带有有效的EditContext 或Model 您通常应该使用@bind-Value 将字段或属性绑定到控件，如下所示。阅读有关绑定的信息。 InputText.Value 在组件上设置参数 - 一个 nono。

这是你的代码的一个版本，确实有效：

<EditForm Model="model">
    <InputNumber TValue="int" @bind-Value="model.Value"></InputNumber>
</EditForm>

<div>@model.Value</div>
@code 

    Model model = new Model()  Value = 4 ;

    class Model
    
        public int Value  get; set;  = 0;

开始使用 MSDocs - Blazor 或其他 Blazor 参考。在我早期，它是我的圣经。

【讨论】：

当然，感谢您的回复。我写的是当后端开发人员开始使用 Blazor/Razor 时会发生什么，哈哈。虽然我实际上并没有那么糟糕，例如角。同时我确实实现了你建议的结构。 （如果首先尝试使用带有小“v”的绑定值，我也会遇到问题。）尽管显然这不能回答有关引发数百个套接字和连接异常的主要问题。我发现了一些与此相关的 github 问题，但没有解决方案或更多信息。 这些主要是您的偏好，而不是硬性规则。 ValueChanged 是处理输入事件的有效方法。你措辞的方式听起来像是在 Blazor 中做某事的唯一方法，这是不正确的。 @Leaky，很抱歉我试图一次做三件事但失败了！和 NP，但从 Blazor Server 开始，以了解您在做什么。不是我。 @ConnorLow。不是我的意图，而是可能重新阅读，所以我修改了我的答案。我确实说过这是 Ta 的版本。【参考方案2】：

解决此问题的方法是选中“选项”菜单中的“仅启用我的代码”框。

调试 -> 选项 -> 常规 -> 仅启用我的代码

【讨论】：

【参考方案3】：

您的原始错误很好地表明了问题所在：

未处理的异常呈现组件：Microsoft.AspNetCore.Components.Forms.InputNumber`1[System.Int32] 需要 EditContext 类型的级联参数。例如，您可以在 EditForm 中使用 Microsoft.AspNetCore.Components.Forms.InputNumber`1[[System.Int32, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]。

InputNumber 是一个内置的number 类型输入，它需要EditContext 类型的CascadingValue。 Read Cascading Parameters and Values here.

如果您不关心验证，请改用简单的&lt;input&gt;。否则，您需要父组件来提供EditContext：EditForm 是内置解决方案；从那里开始。

您随后的错误 (Exception thrown: 'System.Net.Sockets.SocketException') 可能是调试器尝试重新连接到您的应用但由于您的应用遇到未处理的异常（如上）并停止执行而失败。您的调试器不知道连接关闭的原因，并将继续重试连接。

【讨论】：

所以基本上我在数百个异常方面的经验是在调试抛出异常的 WASM 应用程序时设计的预期行为？ 我没有使用过 Blazor WASM，只有服务器，但它看起来像一个工具问题，而不是项目的问题：VS 不断尝试调试。这可能不会是您在代码中所做的任何事情。 好吧，我接受了你的回答，因为这包含了对正在发生的事情的解释；我不认为我们会得到比这更好的东西，因为这确实是目前调试的设计方式。顺便说一句，我已经开始将EditForm 与适当的模型、验证等一起使用；）我实际上并不是一个学习缓慢的人；只是问题中的代码基本上是我第一次尝试使用 Blazor（和 Razor）。 对不起，我知道我给你的比你要求的多:)

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