prg4_1.c : TCP服务器。该程序等待客户的连接，一旦连接，则显示客户IP地址，并发信息回客户。-prg4_1.c : TCP server. The procedure for connecting customers, once connected, it shows that the client IP address, with the information back to customers.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001238s ]
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:0.114855s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001451s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001856s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001525s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005371s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001313s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006777s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019845s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001243s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 116142 [ RunTime:0.028696s ]
