ASP.NET Core SignalR & Worker Services - Getting Started

ASP.NET Core SignalR is an open-source library that simplifies adding real-time web functionality to apps. Real-time web functionality enables server-side code to push content to clients instantly. In thi video build an ASP.NET Core Web Application that uses SignalR as well as Worker Services. The Worker Service is a subscriber to a Message Broker and messages it receives are relayed to Web Browsers using SingalR.

The Visual Studio Solution for the code in this video can be found here:

For Live Session (on Novenber 14th 2020 @ 9am EST) please see my community post:

00:00 Introduction
02:00 Diagram and Explanation of the Entire System
07:50 Starting with the Code
08:43 Modify Index Page
09:30 Adding SignalR and Configurating to Startup
11:23 Endpoint Mapping for SignalR Hub
12:44 Installing the SignalR NuGet Package
16:00 Installing the SignalR Client Side JavaScript libraries
17:45 Script tag in Index page for SignalR JavaScript file
19:17 Initial Test of SignalR plumbing
19:35 Description of what we're building today
20:47 Adding our JavaScript file
23:29 Testing Browser connectivity to the Server side Hub
23:48 Getting a Reference to the SignalR in our Application
24:52 Adding the Worker Service to the Project
27:12 Getting a Reference to the IHubContext in a Worker Service
28:00 Sending message to all SignalR Clients
33:35 Adding the JavaScript callback
35:00 Configuring the Worker Service in Startup
36:10 Testing Message are being received
36:41 Improving the Display of Messages
38:52 Testing the Modified Message Display
41:10 Serialization - MessagePack Serialization
43:54 Conclusion

[syedirfanali]

Really awesome .
I enjoyed watching till end.
I would like to see your next session soon

[ivanvincent]

Great intro to SignalR. The previous video on websockets made this one very easy to grasp. Appreciate your efforts Shiv.

[rodrigo]

This is SO AWESOME!!! thank you a lot for this valuable info!!! just when I ended up creating a BackgroundService for email sending!

[InfinityDsbm]

Just found your channel love your explanations have subbed

[ruttergod]

BRO. Thank you so much! You made this so incredibly simple to understand and implement myself! 🙂

[hassanr]

Thank you for your professional training. One question: can signalR create a push message that displays notification on mobile when the web application is closed?

[rambond]

Thanks Shiv - very useful video.. a quick question, I have two background services service1 is sending a message to service 2 through channel to process, but how can it receive the notification back when the message is processed by service2?

[leroypakade]

Would this work if the work service was running on another thread, ie windows service that's self hosted outside of the App

[saurabhchauhan]

Thank you for this series. Hoping to get some more information about data type we can use to send messages.
Just a question Have you changed the video ratio from your end or my phone latest update messed that up. i was able to zoom your video earlier to see details of what you write from mobile but in this I couldn't.

Thank for all your hard work waiting for the next notification

[mfayeeg]

Dear Mr. Shiv Kumar
Which Camera & Microphone you are using to record your videos?

[hansrudolf]

Seems like you have once again been busy over the weekend .. ;)