WiFi Walkie Talkie

This program transmits sound recorded from microphone to some other devices

running the same program on the same network segment, so works like Walkie

Talkie radio.

Devices find each other by Android NSD (aka Bonjour), no any configuration

required. Unfortunately Android NSD implementation is not stable enough, so

sometimes application can not establish connection properly. Application restart

or device reboot usually helps. Audio data is being transmitted by the unicast

channel, so each device works as a server and as a client at the same time.

Program was implemented as a demonstration of JS-Collider: Java high performance

scalable NIO framework, see https://github.com/js-labs/js-collider .