The project is the socket.io client for unity3d, written in C#. It's based on socketio4net.Client (http://socketio4net.codeplex.com/). However, socketio4net.Client only provides a .NET 4.0 C# client, and does compatible with unity3d. We've done a lot of works on supporting unity3d. The project was initially designed for unity client of pomelo framework, which is a powerful, scalable game server framework.