SQLite is a small, fast, embeddable database. What makes it popular is the combination of the database engine and interface into a single library as well as the ability to store all the data in a single file. Its functionality lies between MySQL and PostgreSQL, however it is faster than both databases.
/*
Here s a small IPv4 example: it asks for a portbase and a destination and
starts sending packets to that destination.
這個IPv4版的例子：它要求portbase(本地端口)與destination （目的端口）然后發送消息
同時還監聽消息。
例子測試一：
啟動一個運行實例，本地地址與目標地址用同一個端口8888
例子測試二：
啟動兩個運行實例，本地地址與目標地址用不同的端口（它要求是偶數端口號）
兩個實例互發
例子的中文解釋都由hanyuejun添加，有任何疑問請發hanyuejun2006@163.com
*/
