.net 4.6中的Websocket连接失败

我有一个信号器，在4.5上工作得很好 升级到4.6后，它在Win 2008 R2上正常工作，但在Windows 2012上不工作

错误是：

System.InvalidOperationException: WebSockets is unsupported in the current application configuration. To enable this, set the following configuration switch in Web.config:
system.web
httpRuntime targetFramework="4.5" 
system.web
For more information, see http://go.microsoft.com/fwlink/?LinkId=252465.
at  
System.Web.Util.SynchronizationContextUtil.ValidateMode(SynchronizationContextMode currentMode, SynchronizationContextMode requiredMode, String specificErrorMessage)

at System.Web.HttpContext.AcceptWebSocketRequest(Func2 userFunc, AspNetWebSocketOptions options) at Microsoft.AspNet.SignalR.Transports.WebSocketTransport.AcceptWebSocketRequest(Func2 callback)
at Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequestPostGroupRead(HostContext context, String groupsToken)
at Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethodT1,T2,T3,TResult
--- 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.d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at 

    Microsoft.Owin.Host.SystemWeb.IntegratedPipeline.StageAsyncResult.End(IAsyncResult ar)
    at         System.Web.HttpApplication.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
    at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

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如果我将httpRuntime targetFramework=“4.5”添加到web.config，应用程序将根本无法运行。

假设您在IIS中托管服务器，则需要在IIS中启用WebSocket。以下是详细信息：

添加

 <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true"/>
  </appSettings>

---

到web.config解决了问题

是的，我正在IIS中托管服务器。并且WebSocket已启用。您的问题是否已解决？