Sahan Serasinghe • 1/1/2021

Understanding the WebSocket Protocol with ASP.NET Core

This article provides a detailed walkthrough of the WebSocket protocol using ASP.NET Core, focusing on the RFC 6455 standard. It explains the HTTP upgrade handshake, message framing, and closing handshake, then demonstrates building a raw echo endpoint with UseWebSockets and System.Net.WebSockets. The guide targets .NET 7 and clarifies when to use raw WebSockets versus SignalR for real-time features. It includes diagrams, code examples, and references to the official specification, making it ideal for developers seeking a deeper understanding of WebSocket internals in a .NET context.

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#real-time #Aspnet Core #Websocket