Oh, Thanks!
I’ve been working on a reasoning system using Elixir/OTP (I’m really enjoy it !!!). The system should have been connected to the robot hardware, but for testing purposes a simulated environment Webots was chosen.
Unfortunately, webots doesn‘t have a language interface for Elixir. So, I use Julia call its dll and transfer robot status to Elixir by Socket.
Well, the status information also includes camera images, so msgpack may be a good choice, just like what AirSim does. But the images are represented by String and its resolution is relative small, so JSON is used by the system. 
I want a good interoperability between Julia and Elixir, both are great programming languages! However, now, Socket + JSON or MsgPack may be more realistic.
