Details
-
Bug
-
Resolution: Done
-
P3: Somewhat important
-
4.5.2, 4.5.3, 4.6.0
-
None
-
macOS
-
I2f8d450bcfb8a7f3abd8918a4e789a850281dd13 (5.0) I2f8d450bcfb8a7f3abd8918a4e789a850281dd13 (4.8)
Description
QTcpServer::listen() returns true when someone is already listening on that same port - Mac OS X
- If I start the server two times, both servers report they have successfully bound the ports
When I send requests to the ports the following happens:
- Requests to port 1501 are processed by the first instance
- Requests to port 1502 are processed by the second instance
- If I stop the second instance, requests to port 1502 are also processed by the first instance
#include <QtCore/QCoreApplication>
#ifndef SERVER_H
#define SERVER_H
#include <QObject>
#include <QTcpServer>
#include <QTcpSocket>
#include <QCoreApplication>
class Server : public QObject
{
Q_OBJECT
public:
Server() :
QObject(0),
p1(new QTcpServer(this)),
p2(new QTcpServer(this))
{}
void start()
{
if(p1->listen(QHostAddress("0.0.0.0"), 1501))
{
qDebug() << "Bound port 1501";
connect(p1,SIGNAL(newConnection()), this, SLOT(handleConnection()));
}
if(p2->listen(QHostAddress("127.0.0.1"), 1502))
{
qDebug() << "Bound port 1502";
connect(p2,SIGNAL(newConnection()), this, SLOT(handleConnection()));
}
}
void stop()
{
QCoreApplication::quit();
}
private slots:
void handleConnection()
{
QTcpSocket* s = 0;
if( sender() == p1 )
{
s = p1->nextPendingConnection();
}
else if( sender() == p2 )
{
s = p2->nextPendingConnection();
}
else
{
qWarning() << Q_FUNC_INFO << ": Unknown Sender";
if( p1->hasPendingConnections() )
s = p1->nextPendingConnection();
else if( p2->hasPendingConnections() )
s = p2->nextPendingConnection();
}
if( s )
{
qDebug() << "Incoming connection at " << s->localAddress().toString() << "-" << s->localPort() << " from " << s->peerAddress() << "-" << s->peerPort();
QByteArray data = s->readAll();
qDebug() << "Received: " << data;
if( data == "STOP" )
stop();
s->write("OK");
s->close();
s->deleteLater();
}
}
private:
QTcpServer* p1;
QTcpServer* p2;
};
#endif // SERVER_H
#include "main.moc"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
Server s;
s.start();
return a.exec();
}
// CODE END