Revert "修改连接断开时，状态还是连接的bug;更新结算单中文支持"

This reverts commit a16ba53ca99bec3a4a86c8521f83ec18bf2eb4e2.
Revert "Revert "修改连接断开时，状态还是连接的bug;更新结算单中文支持""

This reverts commit 0e3752155edeb140d0190412a22e213699f69295.