将SignalR 2.0 Owin管道与SignalR库一起使用

And*_*ers 5 c# asp.net signalr owin

我正在考虑将该库升级到SignalR 2.0

https://github.com/AndersMalmgren/SignalR.EventAggregatorProxy

我希望它通过IAppBuilder接口支持2.0 Owin管道,而不是RouteCollection像SignalR 1.x那样使用。

问题是,如何从IAppBuilder获取路由集合?我需要它来注册处理我的自定义js脚本的自定义IHttpHandler(例如SignalR注册其中心脚本)

我的lib的1.x设置看起来像这样

public static class SignalRConfig
{
    public static void Register(RouteCollection routes)
    {
        routes.MapHubs();
        routes.MapEventProxy<Contracts.Events.Event>();
    }
}
Run Code Online (Sandbox Code Playgroud)

我对2.0配置的目标是这样的

public static class SignalRConfig
{
    public static void Configuration(IAppBuilder app)
    {
        app.MapSignalR();
        app.MapEventProxy<Contracts.Events.Event>();
    }
}
Run Code Online (Sandbox Code Playgroud)

我的依赖于RouteCollection的代码如下所示

public static class RouteCollectionExtensions
{
    public static void MapEventProxy<TEvent>(this RouteCollection routes)
    {
        Bootstrapper.Init<TEvent>();

        routes.Add(new Route(
                       "eventAggregation/events",
                       new RouteValueDictionary(),
                       new RouteValueDictionary() {{"controller", string.Empty}},
                       new EventScriptRouteHandler<TEvent>()));
    }
}
Run Code Online (Sandbox Code Playgroud)

编辑:看起来非常复杂,无法让Owin满足请求,我可以在SignalR 2.0中使用辅助方法来注册路由和该路由的处理程序吗?

更新: 这段代码看起来像是我在正确的轨道上

using Owin;
using SignalR.EventAggregatorProxy.Boostrap;
namespace SignalR.EventAggregatorProxy.Owin
{
    public static class AppBuilderExtensions
    {
        public static void MapEventProxy<TEvent>(this IAppBuilder app)
        {
            Bootstrapper.Init<TEvent>();
            app.Map("/eventAggregation/events", subApp => subApp.Use<EventScriptMiddleware<TEvent>>());
        }
    }
}
Run Code Online (Sandbox Code Playgroud)

现在我只需要实施 EventScriptMiddleware

更新:难题的最后一部分,现在我只需要中间件就可以真正吐出Javacript,应该很容易

namespace SignalR.EventAggregatorProxy.Owin
{
    public class EventScriptMiddleware<TEvent> : OwinMiddleware
    {
        public EventScriptMiddleware(OwinMiddleware next) : base(next)
        {
        }

        public override Task Invoke(IOwinContext context)
        {
            return context.Response.WriteAsync("Hello world!!");
        }
    }
}
Run Code Online (Sandbox Code Playgroud)

And*_*ers 1

最终版本如下所示,应用程序构建器扩展

public static class AppBuilderExtensions
{
    public static void MapEventProxy<TEvent>(this IAppBuilder app)
    {
        Bootstrapper.Init<TEvent>();
        app.Map("/eventAggregation/events", subApp => subApp.Use<EventScriptMiddleware<TEvent>>());
    }
}
Run Code Online (Sandbox Code Playgroud)

调用中间件中的方法

public override Task Invoke(IOwinContext context)
{
    var response = context.Response;
    response.ContentType = "application/javascript";
    response.StatusCode = 200;

    if (ClientCached(context.Request, scriptBuildDate))
    {
        response.StatusCode = 304;
        response.Headers["Content-Length"] = "0";
        response.Body.Close();
        response.Body = Stream.Null;

        return Task.FromResult<Object>(null);
    }

    response.Headers["Last-Modified"] = scriptBuildDate.ToUniversalTime().ToString("r");
    return response.WriteAsync(js);
}
Run Code Online (Sandbox Code Playgroud)

完整源代码在这里

https://github.com/AndersMalmgren/SignalR.EventAggregatorProxy/tree/master/SignalR.EventAggregatorProxy/Owin