tcpSocket_connect_HBJ->abort();//取消已有連接，重置套接字，tcpSocket_connect_HBJ是QTcpSocket類的對象
就不會報錯了。
QAbstractSocket::connectToHost() called when already looking up or connecting/connected to
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Qt-報錯 QNativeSocketEngine::joinMulticastGroup() was not called in QAbstractSocket::BoundState
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