修正同一个client被append两次的BUG
修正同一个client被append两次的BUG

hermixy/qtun,hermixy/qtun,jack230230/qtun,hermixy/qtun,jack230230/qtun,jack230230/qtun,hermixy/qtun,hermixy/qtun,hermixy/qtun,jack230230/qtun,jack230230/qtun,hermixy/qtun,jack230230/qtun,jack230230/qtun