场景为,配置本地IP和接收端口,如果端口为占用,则分配一个可用的端口,于是用一个demo占用某个端口,本程序启动时则触发分配可用端口的机制,绑定另一个端口,但是qt一直报错。
代码如下:
QUdpSocket tmpSocket;
if(!tmpSocket.bind(QHostAddress(m_strLocalIP),m_nLocalPort))//,QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint
{
// tmpSocket.abort();
// QThread::msleep(200);
// tmpSocket.close();
// QThread::msleep(200);
//注释部分放开也没用
qDebug()<<"qt socket bind failed";
if(!tmpSocket.bind(QHostAddress(m_strLocalIP),m_nLocalPort+1))
{
return;
}
}
while (!m_bExitThread)
{
if (!(tmpSocket.hasPendingDatagrams()))
{
if(!tmpSocket.waitForReadyRead(10))
{
continue;
}
}
qint64 sz = tmpSocket.readDatagram(m_pReadBuffer,RECVBUFFERSIZE);
if(sz <= 0)
{
qDebug()<<"no read data";
}
else
{
m_nRecvTotalPackets++;
}
}
大家遇到过这种情况吗?
报错语句为:QUdpSocket::hasPendingDatagrams() called on a QUdpSocket when not in QUdpSocket::BoundState
但是打印此时套接字状态,为QUdpSocket::BoundState,很蒙圈