Open-DIS implements the IEEE DIS protocol in multiple languages.
Open-DIS is an open-source implementation of the Distributed Interactive Simulation (DIS) IEEE-1278 standard in C++, C#, Objective-C, Java, Javascript and XML.
Example applications including sending and receiving native DIS traffic, X-Plane plugin, and WebSocket/Javascript/WebGL applications.
See the individual code directories for each package of interest.