qt5base-lts/examples/network/network-chat/server.h

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#ifndef SERVER_H
#define SERVER_H

#include <QTcpServer>

class Connection;

class Server : public QTcpServer
{
    Q_OBJECT

public:
    Server(QObject *parent = nullptr);

signals:
    void newConnection(Connection *connection);

protected:
    void incomingConnection(qintptr socketDescriptor) override;
};

#endif