Please support SPDY in Glassfish / Grizzly. Other containers like Jetty already support this.
Spdy support is present in GlassFish 4. See: http://www.notshabby.net/2013/04/grizzly-2-3spdy3/
We're working on that at the moment.
Grizzly 3 will have SPDY support. Grizzly 3 will be integrated into Glassfish 4.
I created Grizzly mirror for this issue
Adding myself to CC.