modify SetProxyStatus func as check status firstly
modify SetProxyStatus func as check status firstly

fengshao0907/reborn,qiuyesuifeng/reborn,CrazyJvm/reborn,reborndb/reborn,reborndb/reborn,is00hcw/reborn,ksmaheshkumar/reborn,qiuyesuifeng/reborn,CrazyJvm/reborn,is00hcw/reborn,qiuyesuifeng/reborn,fengshao0907/reborn,reborndb/reborn,ksmaheshkumar/reborn,ksmaheshkumar/reborn,fengshao0907/reborn,hart/reborn,kangkot/reborn,CrazyJvm/reborn,hart/reborn,kangkot/reborn,is00hcw/reborn,fengshao0907/reborn,reborndb/reborn,ksmaheshkumar/reborn,kangkot/reborn,kangkot/reborn,hart/reborn,hart/reborn,CrazyJvm/reborn,is00hcw/reborn,qiuyesuifeng/reborn