如何在 ASP.NET Core 中获取 SignalR Hub 上下文? [英] How to get SignalR Hub Context in a ASP.NET Core?

问题描述

我正在尝试使用以下方法获取集线器的上下文:

I'm trying to get the context for a hub using the following:

var hubContext = GlobalHost.ConnectionManager.GetHubContext<SomeHub>();

问题在于未定义 GlobalHost.我看到它是 SignalR.Core dll 的一部分.目前，我的项目 .json 文件中有以下依赖项:

The problem is that GlobalHost is not defined. I see it is part of the SignalR.Core dll. At the moment, I have the following in my project .json file, under dependencies:

"Microsoft.AspNet.SignalR.Server": "3.0.0-*"

如果我添加最新可用的 Core 版本:

If I add the latest available version of Core:

"Microsoft.AspNet.SignalR.Server": "3.0.0-*",
"Microsoft.AspNet.SignalR.Core" :  "2.1.2"

我收到一大堆错误，因为服务器和核心存在冲突.如果我将它们更改为都使用版本3.0.0-*"，则所有冲突都会消失，但无法找到 GlobalHost.如果我删除服务器，并且只使用核心版本 2.1.2，那么 GlobalHost 可以工作，但所有其他需要服务器的东西，显然都没有.

I get a whole bunch of errors because server and core are conflicting. If I change them to both use version "3.0.0-*", all the conflicts go away, but GlobalHost cannot be found. If I remove Server, and just user Core version 2.1.2 then GlobalHost works, but all the other things needing Server, obviously do not.

有什么想法吗?

推荐答案

Microsoft.AspNet.SignalR.Infrastructure.IConnectionManager 是一个 DI 注入服务，您可以通过它获取集线器上下文...对于例子:

Microsoft.AspNet.SignalR.Infrastructure.IConnectionManager is a DI injected service through which you can get the hub context...For example:

using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Infrastructure;
using Microsoft.AspNet.Mvc;

public class TestController : Controller
{
     private IHubContext testHub;

     public TestController(IConnectionManager connectionManager)
     {
         testHub = connectionManager.GetHubContext<TestHub>();
     }
 .....

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