With WebTransport around the corner I don't think is worth the time investing in learning a, what seems to me, obsolete technology. I can understand it for already big projects working with SSE that don't want to pay the cost of upgrading/changing but for anything new I cannot be bothered since Websockets work good enough for my use cases.
What worries me though is the trend of dismissal of newer technologies as being useless or bad and the resistance to change.
Around the corner? There seems to be nothing about this in any browser. [0] That would put this what, five years out before it could be used in straightforward fashion? Please be practical.
Thanks for pointing that out. I suppose caniuse missing out on the first experimental version of the first browser to support this isn't terribly misleading. Maybe when they get the basics of the API figured out we can start deprecating other things...
WebTransport seems like it will be significantly lower level and more complex to use than SSE, both on the server and the client. To say that this "obsoletes" SSE seems like a serious stretch.
SSE runs over HTTP/3 just as well as any other HTTP feature, and WebTransport is built on HTTP/3 to give you much finer grained control of the HTTP/3 streams. If your application doesn't benefit significantly from that control, then you're just adding needless complexity.
What worries me though is the trend of dismissal of newer technologies as being useless or bad and the resistance to change.