asp.net - 错误: SignalRRouteExtension.Mapconnection is obsolete. use MapSignalR in Owin Startup class

Question

我正在使用ASP.NET SignalR开发ASP.NET MVC应用程序。但是我遇到错误，无法找到解决方法。
这是我的global.asax类，启动项目时在这里出现错误:

 public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start(object sender, EventArgs e)
    {
        AreaRegistration.RegisterAllAreas();

        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);

        //This is what I added and this is where i am getting the error.
        RouteTable.Routes.MapConnection<NfcConnection>("echo", "/echo");
    }
}

和我的连接类在底部

public class NfcConnection : PersistentConnection
{
    protected override Task OnConnected(IRequest request, string connectionId)
    {
        string msg = string.Format(
            "A new user {0} has just joined. (ID: {1})",
            request.QueryString["name"], connectionId);
        return Connection.Broadcast(msg);
    }

    protected override Task OnReceived(IRequest request, string connectionId, string data)
    {

        string msg = string.Format(
            "{0}: {1}", request.QueryString["name"], data);
        return Connection.Broadcast(msg);
    }
}

这是广播来自客户端的数据的部分。
而且我的owin入门类(class)就是这样；

 public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        app.MapSignalR();
    }

}

当我启动项目时，这条线

RouteTable.Routes.MapConnection<NfcConnection>("echo", "/echo");

给我这个错误；

Error'System.Web.Routing.SignalRRouteExtensions.MapConnection<T>(System.Web.Routing.RouteCollection, string, string)' is obsolete: 'Use IAppBuilder.MapSignalR<TConnection> in an Owin Startup class.

我该如何解决？

Answer 1

去掉:

RouteTable.Routes.MapConnection<NfcConnection>("echo", "/echo");

并更改:

app.MapSignalR();

至:

app.MapSignalR<NfcConnection>("/echo");