To more easily write HTTP Client test scenarios for different protocol versions and different TLS versions, it would be very convenient if the HTTP/2 server, that is part of the JDK regression test suite, was able to issue basic HTTP/1.1 responses.
This enhance adds minimal support, which effectively returns a canned 200 - OK - response to all non-upgrade HTTP/1.1 requests, as well as secure connections that do not negotiate the h2 ALPN. This new functionality is opt-in so as to not inadvertently affect existing tests which assume HTTP/2 only support. https://cr.openjdk.java.net/~chegar/8242044/webrev/ -Chris.
