Extending Functionality - Advanced SignalR Features

Overview

SignalR is a real-time communication framework by Microsoft that allows bi-directional communication between server and client. While SignalR provides a lot of advanced features out-of-the-box, there are a few additional functionalities that can be added to enhance its capabilities. This page discusses some of the advanced SignalR Features that can be used to extend the functionality of the framework.

Syntax

public class AdvancedSignalRHub : Hub<IClientMethods>
{
    public async Task SendMessageToCaller(string message)
    {
        await Clients.Caller.ReceiveMessage("Message Received", message);
    }
}

Example

In the above syntax, an AdvancedSignalRHub class is created that extends the Hub class in SignalR. The class implements the IClientMethods interface which is used to define the client-side methods.

In the SendMessageToCaller() method, the message is sent back to the caller by using the Clients.Caller.ReceiveMessage() method.

Output

None

Explanation

The above code snippet demonstrates an example of how to extend the functionality of SignalR. By creating custom methods and utilizing the Clients property of the Hub class, we can send data to specific clients or groups of clients, as opposed to broadcasting it to all connected clients.

The SendMessageToCaller() method is a custom method that sends a message back to the client that invoked it. The method utilizes the Clients.Caller property which represents the connection ID of the client that invoked the method.

Use

Advanced SignalR Features can be used in scenarios where the standard SignalR features are not sufficient. By creating custom methods and utilizing the Clients property of the Hub class, we can achieve more advanced functionality such as sending data to specific clients or groups of clients, invoking client-side methods from the server-side, and much more.

Important Points

• SignalR provides a lot of advanced features out-of-the-box, but it can be extended to add additional functionality.
• By creating custom methods and utilizing the Clients property of the Hub class, we can send data to specific clients or groups of clients, as opposed to broadcasting it to all connected clients.
• Advanced SignalR Features can be used in scenarios where the standard SignalR features are not sufficient.

Summary

By extending the functionality of SignalR, we can achieve more advanced functionality such as sending data to specific clients or groups of clients, invoking client-side methods from the server-side, and much more. This page discussed how to extend the functionality of SignalR by creating custom methods and utilizing the Clients property of the Hub class.