在VC环境下，利用UDP实现了局域网的扫描功能，能够列表显示IP地址，机器名，MAC地址等-In the VC environment, the use of UDP network scanning to achieve a function that shows a list of IP address, machine name, MAC address, etc.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001369s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.093107s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001501s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001440s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001216s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003596s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001180s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004267s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017281s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001673s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 208578 [ RunTime:0.010795s ]
