Fallback to http1.1 when browser doesn't support http2
<p>I am learning about HTTP2 and developed a POC using jetty which is working fine in chrome.</p>

<p>But when i hit the same URL in firefox i HTTP2 URL request got blank page with exception saying "The page you are trying to view cannot be shown because the authenticity of the received data could not be verified."
After searching around found that in firefox i have to enable network.http.spdy.enabled.http2 from "about:config".</p>

<p>My question is if the browser does not support the HTTP2 is there any mechanism on server or browser side to fallback to HTTP1.</p>