While writing Netty socket listeners for Flipkart Phantom project, we realized the need for a Unix Domain Sockets based transport. We wrote one and published more details here : https://github.com/Flipkart/phantom/wiki/Unix-domain-socket-transport-for-netty

It is a UDS transport implementation for Netty and is compliant with Netty version 3.3.x. This transport is a port of the Netty OIO transport implementation and uses UDS specific API. It may be used independently of Phantom and has dependencies only on Netty and junixsocket libraries.