SignalR - 呼叫组的成员不起作用

Question

语境

我正在将 SignalR 3 RC1 与 ASP.NET 5 用于我的项目，但我无法让我的客户端订阅特定组，以从我的服务器接收消息。

枢纽类

[HubName("ChatHub")]
public class ChatHub : Hub
{
   public async Task Join(string userId)
   {
      if (!string.IsNullOrEmpty(userId))
      {
          await Groups.Add(Context.ConnectionId, userId);
      }
   }
}

JS代码

var chatHub = hubConnection.createHubProxy("chatHub");
    chatHub .on("newMessage", (response) => {
        console.log(response);
    });

    hubConnection.start().done(response => {
        chatHub.invoke("join", "userid");
    });

网络接口

public class ChatController : ApiController
{
    protected readonly IHubContext ChatHub;

    public ChatController(IConnectionManager signalRConnectionManager)
    {
        ChatHub = signalRConnectionManager.GetHubContext<ChatHub>();
    }

    [Authorize]
    [HttpPost]
    [Route("Message")]
    public async Task<IActionResult> CreateMessage([FromBody] messageParams dto)
    {
        await ChatHub.Clients.Group("userid").NewMessage("hello world");
    }
}

如果我广播“所有”客户端，它就可以工作。

await ChatHub.Clients.All.NewMessage("hello world");

是否有特定的配置来向特定组广播消息？

Answer 1

对于有兴趣将 ASP.NET 5 与 Signalr 2.2 一起使用的人，我在 IAppBuilder 和 IApplicationBuilder 之间创建了一座桥梁

internal static class IApplicationBuilderExtensions
    {
        public static void UseOwin(
          this IApplicationBuilder app,
          Action<IAppBuilder> owinConfiguration)
        {
            app.UseOwin(
              addToPipeline =>
              {
                  addToPipeline(
                    next =>
                    {
                        var builder = new AppBuilder();

                        owinConfiguration(builder);

                        builder.Run(ctx => next(ctx.Environment));

                        Func<IDictionary<string, object>, Task> appFunc =
                          (Func<IDictionary<string, object>, Task>)
                          builder.Build(typeof(Func<IDictionary<string, object>, Task>));

                        return appFunc;
                    });
              });
        }
    }

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
            app.UseOwin(owin => owin.MapSignalR());
}

导入这些依赖项

"Microsoft.AspNet.Owin": "1.0.0-rc1-final",
"Microsoft.Owin": "3.0.1"