ASP.NET Core 2.0 And SignalR Core (Alpha)

In this article, we will learn how to use SignalR Core in ASP.NET Core 2.0 web applications to provide real-time communication.

Scenario

After processing a payroll, the system will trigger a report generation process. Once this process is complete, we want to notify all the web clients that their reports are available to view.

Note

I want to demonstrate a real world usage of SignalR but also want to keep it simple enough. Like SignalR, this post is ‘alpha’ too, i.e., be gentle in your feedback if you find bugs

Note - I am assuming that you are familiar with the previous version of SignalR. If not, please check the documentation here.

Solution

We will build two applications: Server and Client. The server will receive notifications from the reporting engine when reports are ready and in-turn, it will notify the clients.

Server

Create an empty console application (.NET Core) and add NuGet packages.

• AspNetCore.All
• AspNetCore.SignalR

Update the Program class.

Add a Startup class to add services and middleware for SignalR.

Create a class that inherits from SignalR Hub class.

Client

Create an empty ASP.NET Core 2.0 web application and add NuGet package Microsoft.AspNetCore.SignalR. Update the Startup class to add services and middleware for MVC.