.NET Guidebook

Web Development

.NET WebSockets

Using WebSockets

.NET WebSockets use SignalR for real-time communication.

Introduction to .NET WebSockets

.NET WebSockets provide a full-duplex communication channel over a single, long-lived connection, enabling real-time communication between a client and a server. This is particularly useful for applications that require frequent updates from the server, such as chat applications, gaming, or live data feeds.

What is SignalR?

SignalR is a library for ASP.NET that simplifies the process of adding real-time web functionality to applications. With SignalR, you can push content to connected clients instantly as it becomes available, rather than having the server wait for a client to request new data.

Setting Up a SignalR Hub

To begin using SignalR, you need to set up a SignalR Hub. A Hub is a class that serves as a high-level pipeline that handles client-server communication. Here's how you can set up a simple SignalR hub in .NET:

Configuring the SignalR in Startup

Next, configure the SignalR hub in the Startup.cs file. This involves setting up middleware to handle requests to the hub.

Connecting the Client to the SignalR Hub

After configuring the server, the next step is to connect the client to the SignalR hub. You can use JavaScript to establish this connection on a web client.

Sending Messages from the Client

To send messages from the client, you can invoke the SendMessage method defined in the SignalR hub:

Conclusion

By implementing WebSockets with SignalR in .NET, developers can create applications that offer seamless real-time communication. This tutorial covered the basics of setting up a SignalR hub, configuring it in your ASP.NET application, and connecting a client to send and receive messages. This foundation allows you to expand into more complex real-time communication scenarios.

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