客户端的实现)"/>
Qt实现简单的TCP协议(客户端的实现)
1、QT提供了QTcpSocket类,可以直接实例化一个客户端。需要在pro文件中添加 QT += network
2、连接服务端
connect(connectbutton,SIGNAL(clicked()),this,SLOT(on_connect_cliked()));
void MyDialog::on_connect_cliked(){
if(connectbutton->text()=="连接")
{
m_socket->connectToHost("192.168.0.103",8899,QTcpSocket::ReadWrite);
if(!m_socket->waitForConnected())
{
qDebug()<<"client connect error";
}
else{
qDebug()<<"已连接上";
connectbutton->setText("断开");
}
}
else
{
m_socket->disconnectFromHost();
if(m_socket->state()==QAbstractSocket::UnconnectedState
|| m_socket->waitForDisconnected(1000))
{
qDebug()<<"已断开";
connectbutton->setText("连接");
}
}
}
3、接受服务端发来的数据
QTimer *timer = new QTimer;
connect(timer,SIGNAL(timeout()),this,SLOT(receive_repeat()));
timer->start(1);
void MyDialog::readData(){
QByteArray buffer = m_socket->readAll();
if(!buffer.isEmpty())
{
receivee.append(buffer);
qDebug()<<"添加了数据";
}
}
4、给服务端发送数据
connect(sendbutton,SIGNAL(clicked()),this,SLOT(send_msg()));
void MyDialog::send_msg(){
QString data = sendtext->toPlainText();
if(data != "")
{
// qDebug()<<"mydialog sendtext2"<<data;
m_socket->write(data.toLatin1());
}
}
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Qt实现简单的TCP协议(客户端的实现)
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