udp 广播信息:
1.http://www.linuxidc.com/Linux/2010-11/29886.htm
2.http://blog.csdn.net/leng_que/archive/2009/11/14/4811286.aspx
3. http://blog.chinaunix.net/u2/73528/showart_1081004.html
4. http://linux.chinaunix.net/techdoc/develop/2007/11/25/973110.shtml
socket函数信息:
5. http://blog.csdn.net/sws9999/archive/2010/03/08/5355528.aspx
6. http://blog.csdn.net/zhandoushi1982/archive/2010/03/13/5372870.aspx
7. http://blog.csdn.net/xuqing1980/archive/2006/09/14/1221977.aspx
8. http://blog.csdn.net/qzsqb/archive/2007/05/20/1618009.aspx
9. http://blog.csdn.net/weisunding/archive/2005/11/22/534474.aspx
10. http://blog.csdn.net/yamijia/archive/2005/12/13/551771.aspx
11. http://linux.chinaitlab.com/Perl/719489.html