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/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QmlLive tool.
**
** $QT_BEGIN_LICENSE:GPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: GPL-3.0
**
****************************************************************************/
#include "ipcserver.h"
#include "ipcconnection.h"
#ifdef QMLLIVE_IPC_DEBUG
#define DEBUG qDebug()
#else
#define DEBUG if (0) qDebug()
#endif
/*!
* \class IpcServer
* \brief The IpcServer listens on a port and creates an IpcConnection for an incoming
* connection.
* \inmodule ipc
*
* The IPC server receives a method call from the client an notifies the user through
* the IpcServer::received signal.
*
* \code{.cpp}
* m_server = new IpcServer(this);
* connect(m_server, &IpcServer::received, this, &MyHandler::handleCall);
* m_server->listen(10234);
*
* ...
*
* MyHandler::handleCall(const QString& method, const QByteArray& contnt) {
* if (method == "echo(QString)") {
* QString text;
* QDataStream in(content);
* in >> text;
* qDebug() << "call received: " << method << ": " << text;
* }
* }
* \endcode
*/
/*!
* \brief Standard constructor using \a parent as parent object
*/
IpcServer::IpcServer(QObject *parent)
: QObject(parent)
, m_server(new QTcpServer(this))
{
connect(m_server, &QTcpServer::newConnection, this, &IpcServer::newConnection);
}
/*!
* \brief listens to incomong connections on \a port
*/
void IpcServer::listen(int port)
{
DEBUG << "IpcServer::listen: " << port;
m_server->listen(QHostAddress::Any, port);
}
/*!
* \brief Creates a IpcConnection on incoming connection
*/
void IpcServer::newConnection()
{
DEBUG << "IpcServer::newConnection";
if (m_server->hasPendingConnections()) {
QTcpSocket *socket = m_server->nextPendingConnection();
emit clientConnected(socket->peerAddress());
emit clientConnected(socket);
IpcConnection *connection = new IpcConnection(socket, this);
connect(connection, &IpcConnection::connectionClosed, this, &IpcServer::onConnectionClosed);
connect(connection, &IpcConnection::received, this, &IpcServer::received);
}
}
void IpcServer::onConnectionClosed()
{
IpcConnection *connection = qobject_cast<IpcConnection*>(sender());
emit clientDisconnected(connection->socket()->peerAddress());
emit clientDisconnected(connection->socket());
if (connection->parent() == this)
delete connection;
}
/*!
* Sets the maximal nuber of pending connections to \a num
*/
void IpcServer::setMaxConnections(int num)
{
m_server->setMaxPendingConnections(num);
}
/*!
* \fn void IpcServer::received(const QString& method, const QByteArray& content)
* \brief signals a IPC call has arrived
*
* A IPC call requesting \a method and using \a content a the parameters for the method
*/
/*!
* \fn void IpcServer::clientConnected(const QHostAddress& address)
*
* Called when a new client connection is established, providing the \a address
*/
/*!
* \fn void IpcServer::clientConnected(QTcpSocket *socket)
*
* * Called when a new client connection is established, providing the \a socket
*/
/*!
* \fn void IpcServer::clientDisconnected(QTcpSocket *socket)
*
* * Called when an existing client connection is dropped, providing the \a socket
*/
/*!
* \fn void IpcServer::clientDisconnected(const QHostAddress& address)
*
* Called when an existing client connection is dropped, providing the \a address
*/
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