iPhone通讯。上传下发消息的演示。适合刚做网络通讯的开发人员学习-iPhone socket Up down demo

它是一个关于iOS下socketet通讯的事例，例子完整的展现了iOS下通信socket接口。适合初学者查看学习。-It is a case about socketet communications under iOS, the example shows the complete iOS a communication socket interface. Check for beginners to learn.