https://www.strathweb.com/categories/net-9/ Recent content in Net 9 on Strathweb. A free flowing tech monologue. Hugo -- gohugo.io en-us Fri, 12 Jul 2024 04:06:14 +0000 https://www.strathweb.com/2024/07/built-in-support-for-server-sent-events-in-net-9/ Fri, 12 Jul 2024 04:06:14 +0000 https://www.strathweb.com/2024/07/built-in-support-for-server-sent-events-in-net-9/ <p>Many years ago I wrote <a href="https://link.springer.com/book/10.1007/978-1-4302-5981-7">a book</a> about ASP.NET Web API. One of the <a href="https://link.springer.com/chapter/10.1007/978-1-4302-5981-7_8">chapters</a> in that book was dedicated to supporting push communication between the server and the client, and one of the covered techniques was the niche technology called Server-Sent Events (<a href="https://html.spec.whatwg.org/multipage/server-sent-events.html">SSE</a>). At the time, SSE was not widely supported by browsers, however, it was super simple and effective way to push data from the server to the client, and it was a great fit for scenarios where you needed to push data from the server to the client in a one-way fashion without much ceremony.</p> <p>Over the years, SSE has not really gained much traction, and WebSockets have become the de-facto standard for push communication. However, in recent years a certain OpenAI came out with their API that uses SSE for streaming responses from their Large Language Model, and, pretty much overnight, SSE became cool again.</p> <p>In .NET 9, SSE finally is getting first-class client-side support and the first preview was released this week with .NET Preview 9.</p>