finalize conn when idleconn <= 0
finalize conn when idleconn <= 0

maxencoder/mixer,flashbuckets/mixer,shenli/mixer,deafgoat/mixer,siddontang/mixer,leohdr/mixer,siddontang/mixer,leohdr/mixer,maxencoder/mixer,fengshao0907/mixer,fengshao0907/mixer,deafgoat/mixer,flashbuckets/mixer,shenli/mixer