信号R未连接错误：协商请求期间出错

Question

我一直试图让一个JavaScript信号客户端对抗asp.net web api。我收到以下错误。 Error: Error during negotiation request. at Object.error (jquery.signalR-2.2.0.js:178) at onFailed (jquery.signalR-2.2.0.js:644) at Object.error (jquery.signalR-2.2.0.js:664) at j (jQuery-2.1.4.js:2) at Object.fireWith [as rejectWith] (jQuery-2.1.4.js:2) at x (jQuery-2.1.4.js:4) at HTMLScriptElement.c (jQuery-2.1.4.js:4) at HTMLScriptElement.dispatch (jQuery-2.1.4.js:3) at HTMLScriptElement.r.handle (jQuery-2.1.4.js:3)

以下是web api startup.cs文件

的代码

[assembly: OwinStartup(typeof(HBSWebAPI.Startup))]

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

    }
}
}

以下是JavaScript代码

var connection = $.hubConnection("http://192.168.100.162:80/HBSWebAPICopy",  {    logging: true, useDefaultPath: false });
        var hub = connection.createHubProxy("RateCheckerHub");
        connection.start({ withCredentials: false,jsonp: true })
                    .done(function () {
                    console.log('connected');
                    hub.say("success?");
                })
                .fail(function (a) {
                    debugger
                    console.log('not connected'+a);
                });
   }); 

`