标签:UDP Qt buffer void server --- ServerMainWindow ui socket
功能在widget工程里面实现
准备工作
在 .pro 文件里加上
QT += network
TCP
服务端
#include <QTcpServer>
#include <QTcpSocket>
1、定义监听socket和接收消息socket
QTcpServer* server;
QTcpSocket* socket;
2、在构造函数里进行初始化
server = new QTcpServer();
connect(server,&QTcpServer::newConnection,this,&ServerMainWindow::handleNewConnect);
if(!server->listen(QHostAddress::Any,9966))
{
ui->labelRecvData->setText(server->errorString());
}
3、添加发送消息和接收消息的函数
void ServerMainWindow::handleNewConnect()
{
socket = server->nextPendingConnection();
connect(socket,&QTcpSocket::readyRead,this,&ServerMainWindow::recvData);
connect(socket,&QTcpSocket::disconnected,this,&ServerMainWindow::handleDisconnect);
}
void ServerMainWindow::recvData()
{
QByteArray buffer;
buffer = socket->readAll();
if(!buffer.isEmpty())
{
ui->labelRecvData->setText(QString(buffer));
}
}
void ServerMainWindow::handleDisconnect()
{
ui->labelRecvData->setText("Client disconnected");
}
void ServerMainWindow::on_pushButtonSendData_clicked()
{
QString qstrSend = ui->lineEditSendData->text();
socket->write(qstrSend.toUtf8());
socket->flush();
}
客户端
#include <QTcpSocket>
1、添加socket
QTcpSocket* socket;
2、在构造函数里面初始化
socket = new QTcpSocket();
socket->connectToHost("10.30.16.254",9966);
if(!socket->waitForConnected(3000))
{
qDebug()<<"Connect fail"<<endl;
}
else
{
socket->write("hello");
socket->flush();
connect(socket,&QTcpSocket::readyRead,this,&MainWindowClient::recvData);
}
3、添加发送消息和接收消息函数
void MainWindowClient::recvData()
{
QByteArray buffer;
buffer = socket->readAll();
if(!buffer.isEmpty())
{
ui->labelRecvData->setText(QString(buffer));
}
}
void MainWindowClient::on_pushButtonSendData_clicked()
{
QString qstrSendData = ui->textEditSendData->toPlainText();
if(!qstrSendData.isEmpty())
{
socket->write(qstrSendData.toUtf8());
socket->flush();
}
}
UPD
对于UDP而言,不区分客户端和服务端,因为每个socket都既可以广播消息也可以接收消息
#include <QUdpSocket>
1、添加socket
QUdpSocket* socket;
2、在构造函数里初始化
socket = new QUdpSocket();
socket->bind(8909,QUdpSocket::ShareAddress);
connect(socket,&QUdpSocket::readyRead,this,&MainWindowUDPServer::recvData);
3、添加广播消息和发送消息函数
//读数据报
void MainWindowUDPServer::recvData()
{
while(socket->hasPendingDatagrams())
{
QByteArray dataGrams;
dataGrams.resize(socket->pendingDatagramSize());
QHostAddress address;
quint16 port;
socket->readDatagram(dataGrams.data(),dataGrams.size(),&address,&port);
qDebug()<<address<<port<<endl;
QDataStream stream(dataGrams);
QString qstrData1,qstrData2;
stream>>qstrData1>>qstrData2;
ui->labelRecvData->setText(qstrData1);
}
}
void MainWindowUDPServer::on_pushButtonSendDataGram_clicked()
{
QByteArray byteArray;
QDataStream stream(&byteArray,QIODevice::WriteOnly);
stream<<ui->textEditSendDataGram->toPlainText();
socket->writeDatagram(byteArray,QHostAddress::Broadcast,8909);
}
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标签:UDP,Qt,buffer,void,server,---,ServerMainWindow,ui,socket 来源: https://blog.csdn.net/weixin_45714126/article/details/123231597
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