How do I create a web API that pushes updates to clients regularly?

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Hi All,

I am trying to develop a Web API application that is able to push updates to the clients at regular intervals in real-time.

I am not sure if this is possible as I am now quite confused between WebSockets, SignalR and Web API.

If I am approaching it the wrong way, I do hope you can point me in some direction for me to learn and try it out.

What I have tried:

I have built a simple Web API application that has the various routes that provides my data via GET request. But now I am stuck on how to trigger a push from my app to my clients, if possible.

The Web API is based on the Visual Studio template for ASP.NET Core Web API.

Posted 17-Jun-21 16:59pm

amsga

Updated 17-Jun-21 17:49pm

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Dave Kreskowiak · Accepted Answer · 2021-06-17T17:49:00

Solution 1

You don't. Not using a web API anyway.

Anything over HTTP/HTTPS is a request/response. The client makes a request and the server sends back a response, typically an HTML page. A web server can NOT call up a client and just send it something whenever it wants.

You have to use something else that clients register with, like a SignalR server. That server has the capability of sending messages to clients outside of the normal web channel.

Posted 17-Jun-21 17:49pm

Dave Kreskowiak

Comments

amsga 22-Jun-21 5:55am

Thanks, I'll take a look at SignalR. From what I initially understand, is it all through a single socket with nothing to indicate the message type other than the contents?

Dave Kreskowiak 22-Jun-21 10:08am

Yep.