如何在ASP.NET MVC 4中使用Signalr V2 Beta [英] How to use signalr v2 beta in asp.net mvc 4

问题描述

在v2之前:

RouteTable.Routes.MapHubs();

在v2中，MapHubs不再存在. Wiki说要添加一个Startup类和一个Configuration方法以及对app.MapHubs()的调用.

In v2, MapHubs does not exist anymore. The wiki says to add a Startup class and a Configuration method and a call to app.MapHubs().

namespace MyAssembly 
{
public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        //Before v2
        //RouteTable.Routes.MapHubs();

        app.MapHubs();
    }
}
}

但是永远不会调用该方法，不会发生错误，并且...没有设置集线器.

But the method is never called, no error occurs, and ... no hub are setup.

我想有些代码要添加到global.asax.cs

I suppose there is some code to add to global.asax.cs

秘密是什么?

推荐答案

删除了不相关的行.

解决方案！

<appSettings>
    <add key="owin:AppStartup" value="MyNameSpace.Startup, MyNameSpace" />
</appSettings>

plus同时更新了MVC4(不是预发行版，而是最新的稳定版本)和SignalR/owin nuget.

plus update both MVC4 (not to prerelease, but to latest stable version) and SignalR/owin nugets.

加上js客户端中的修复错误:

plus fix bugs in js client :

• 如果disconnectTimeout = 999000，则将其禁用.必须通过以下方式在服务器端进行设置:GlobalHost.Configuration.DisconnectTimeout = TimeSpan.FromSeconds(999); 注意:服务器端不能将值设置为< 6(如果DisconnectTimeout< 6，信号器将引发异常).因此，请使用此魔术数字.
• webSockets:在sockettransport中设置connection.socket = null，否则(手动)停止调用后，启动调用将失败
• serverSentEvents:防止在卸载窗口时由重新连接尝试引起的错误
• chrome如果信号器中心URL不可用(暂时)失败，则异常失败:与其放弃，请尝试使用下一个可用协议/尝试重新连接.

• if disconnectTimeout=999000 then it is disabled. Must be set server-side with: GlobalHost.Configuration.DisconnectTimeout = TimeSpan.FromSeconds(999); note: server side can not set a value < 6 (signalr throws an exception if DisconnectTimeout < 6). So use this magic number.
• webSockets: set connection.socket = null in sockettransport, otherwise the call to start fails after a (manual) call to stop
• serverSentEvents: prevent error caused by a reconnection attempt when the window is unloading
• chrome fails with exception if signalr hub url not available (temporarily) : Instead of giving up try the next available protocol / try to reconnect.

这篇关于如何在ASP.NET MVC 4中使用Signalr V2 Beta的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！