Missing documentation for how to implement the server side of Connection: upgrade
This should work:
GET /Controller/Input HTTP/1.1
Host: localhost
Cookie: session-cookie
Connection: upgrade
Upgrade: application/new-thing
Where the controller grabs the streams from HttpRequest and HttpResponse
From other traces I've gotten; this is supposed to be a thing but the documentation for how to do it is completely missing. The fact that "application/new-thing" is something you've never heard of is the point.