客户端源码，UDP穿透技术，适合CSHARP编程，有助于程序员编程的速度

KML 2.0介绍 KML全称是Keyhole Markup Language KML，是一个基于XML语法和文件格式的文件，用来描述和保存地理信息如点、线、图片、折线并在Google Earth客户端之中显示 The core of the project is the KMLCreator.cs. This has three classes, KMLCoordinates, KMLPoint and KMLLine-Google Earth KML File Creator C

TCP socket通讯实例 这是一个有客户端和服务器端的多人即时通讯软件-TCP socket communication example