{

fb = open("/dev/rtp1",O_RDWR | O_NONBLOCK); //读写，非阻态方式打开；

if(fb<0)

{

sendErrFlg();

myHelper::sleep(1500);

dataInit();

return;

}

m_activeNotifier=new QSocketNotifier(fb,QSocketNotifier::Read,this); //创建QSocketNotifier的对象；

connect(m_activeNotifier,SIGNAL(activated(int)),this,SLOT(readSocketData(int)));

m_errorNotifier=new QSocketNotifier(fb,QSocketNotifier::Exception,this); //创建QSocketNotifier的对象；

connect(m_errorNotifier,SIGNAL(activated(int)),this,SLOT(errorSocket(int)));

{

char *read_buf;

int read_buf_size=2000;

read_buf=new char[read_buf_size];

memset(read_buf,0,read_buf_size);

read(fb, read_buf,20000);

qDebug()<<"get replay message!"<< read_buf;

emit sendXddpData(read_buf);

delete[] read_buf;

{

int size=data.size();

char *write_buf=data.data();

write(fb,write_buf,size);

{

int size=data.size();

char *write_buf=data.data();

write(fb,write_buf,size);