SignalR-从集线器外部通过另一个项目中的集线器进行广播 [英] SignalR - Broadcasting over a Hub in another Project from outside of a Hub

问题描述

我的解决方案中有两个项目：

I have two projects in my solution:

项目1： SignalRChat（MVC）-工作正常

项目2：
DatabaseWatcherService Windows服务-正常工作

Project 1: "SignalRChat" (MVC) - Works fine
Project 2: "DatabaseWatcherService" Windows Service - Works fine

我正尝试拨打我的电话通过我的Windows服务发出的SignalRChat Hub，它似乎无法正常工作。

I'm trying to make a call to my SignalRChat Hub from my Windows Service and it doesn't appear to be working.

这是我从Windows服务中调用我的Hub的地方（https://github.com/SignalR/SignalR/wiki/Hubs#broadcasting -从一个集线器中移出一个集线器）：

This is where I call my Hub from my windows service (https://github.com/SignalR/SignalR/wiki/Hubs#broadcasting-over-a-hub-from-outside-of-a-hub):

void PerformTimerOperation(object sender, EventArgs e)
    {
        eventLog1.WriteEntry("Timer ticked...");

        var message = "test";

        var context = GlobalHost.ConnectionManager.GetHubContext<SignalRChat.ChatHub>();
        context.Clients.All.addNewMessageToPage(message);
    }

尝试连接时出现以下错误：

I'm getting the following error when attempting to connect:

Message =远程服务器返回错误：（500）内部服务器错误。

Message=The remote server returned an error: (500) Internal Server Error.

我正在尝试通过 var connection = new HubConnection（ http：// localhost：2129）;

正在运行我的MVC项目的端口2129。

Port 2129 is what my MVC project is running on.

推荐答案

据我所知，当您从Web应用程序内部调用集线器时。

This will only work, as far as I am aware, when you are calling the hub from within the web application.

为了从Web应用程序外部与集线器进行交互，例如从Windows服务中，您需要查看 SignalR客户端中心文档

In order to interact with the hub from outside of the web application, e.g. from a Windows Service, you will need to take a look at the SignalR Client Hubs documentation

1. 将以下NuGet程序包添加到项目中： Microsoft.AspNet.SignalR.Client

在页面顶部添加以下语句：使用Microsoft.AspNet.SignalR.Client ;

Add the following statement to the top of your page: using Microsoft.AspNet.SignalR.Client;

您需要创建与集线器的连接，然后启动连接。

You would need to create a connection to the hub, and then start the connection.

---

---

var connection = new HubConnection("http://mysite/");
IHubProxy myHub = connection.CreateHubProxy("MyHub");

connection.Start().Wait(); // not sure if you need this if you are simply posting to the hub

myHub.Invoke("addNewMessageToPage", "Hello World");  

在您的中心中，您将需要一种用于 AddNewMessageToPage的方法接受hello世界字符串，然后从此处调用 Clients.All.addNewMessageTopage（message）

In your hub you would then need to have a method for AddNewMessageToPage which accepts the hello world string and from here call Clients.All.addNewMessageTopage(message)

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