How to Build a Real-time Console App with SignalR?

Console App Example for SignalR Communication

Understanding SignalR

SignalR is a framework for creating real-time web applications. It allows client applications (such as console apps) to connect to server hubs and receive updates when data changes on the server.

Establishing a Connection

To connect a console app to a SignalR hub, you need the following information:

• Hub URL (e.g., "http://127.0.0.1:8088/")
• Hub name (e.g., "CustomHub")

Sending a Message

To send a message to a hub, create a proxy for the hub and invoke its "Send" method:

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

Listening for Messages

To listen for messages from the hub, register a callback event handler for the "addMessage" method:

myHub.On("addMessage", param => { Console.WriteLine(param); });

Server-Side Hub Code

The hub class on the server side should implement the Hub interface and define methods that clients can invoke:

[HubName("CustomHub")]
public class MyHub : Hub
{
    public string Send(string message) { return message; }

    public void DoSomething(string param) { Clients.addMessage(param); }
}

Custom Hub Name

In the provided example, the hub name is specified as "CustomHub" using the [HubName] attribute. If you omit this attribute or set it to an empty string, the default hub name will be "Chat".

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