Bumping netty version from 3.9.2 to 4.0.21. Code changes are only enough to get it to compile, done with the help of the following resources: http://netty.io/wiki/new-and-noteworthy-in-4.0.html#wiki-h3-25  http://netty.io/4.0/api/index.html  http://netty.io/3.9/api/index.html   Tests currently fail.