Think all software written for all devices involving every single embedded thingie with a webclient reporting in or polling data everywhere: Every ATM, every POS device, every IOT-device made yet and everyone to be made in the future. Every little gadget with a network stack ever made.
And you're telling me all of those will have an updated HTTP-stack within 2 years?
You're not being "overly optimistic", you're being tragically unrealistic.
Like every other published internet-standard, HTTP/1.0 and HTTP/1.1 will be here until the end of the internet. Sadly the clusterfuck that is HTTP/2.0 will too now.
The people talking about HTTP/3.0 already really seems to have missed this bit. (They're talking about 3.0 because HTTP/2.0 didn't really solve the problems we have with HTTP/1.1, but nevermind that, Google steam-rolled this one through and we want to be trendy)
The question is now: How many HTTP-stacks do you want to support? Is 2 OK? 3? 4? When do you say enough is enough?
