droidlistener.cpp Example File

    /*
     * Copyright (c) 2013 BlackBerry Limited.
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    #include "droidlistener.hpp"
    #include <QDebug>
    #include <QtNetwork/QTcpSocket>
    #include <QtNetwork/QTcpServer>

    droidlistener::droidlistener(QObject *parent)
        : QObject(parent), m_port(9876)
    {
        m_server = new QTcpServer(this);
        // Connect into the signal/slot mechanism to invoke this class method when a new connection
        // is available
        bool ok = connect(m_server, SIGNAL(newConnection()), this, SLOT(newConnection()));
        Q_ASSERT(ok);
        Q_UNUSED(ok);
    }
    droidlistener::~droidlistener()
    {
        if (m_socket) {
            disconnected();
            m_socket->deleteLater();
        }
        m_server->close();
        m_server->deleteLater();
    }

    void droidlistener::listen()
    {
        qDebug() << "xandos: start listening for connections";
        m_server->listen(QHostAddress::LocalHost, m_port);
    }
    void droidlistener::newConnection()
    {
        m_socket = m_server->nextPendingConnection();
        if (m_socket->state() == QTcpSocket::ConnectedState) {
            qDebug() << "xandos: New connection established.";
        }
        // Make connections for reveiving disconnect and read ready signals for the
        // new connection socket
        bool ok = connect(m_socket, SIGNAL(disconnected()), this, SLOT(disconnected()));
        Q_ASSERT(ok);
        ok = connect(m_socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
        Q_ASSERT(ok);
        Q_UNUSED(ok);
    }
    void droidlistener::readyRead()
    {
        QByteArray ba = m_socket->read(20);
        // Emit the droid selection when finished reading in the
        // data from the droid client socket
        Q_EMIT droidSelection(QString(ba));
    }

    void droidlistener::readyWrite(const int code)
    {
        if (m_socket && m_socket->state() == QTcpSocket::ConnectedState) {
            m_socket->write(QByteArray::number(code));
            m_socket->flush();
        }
    }
    void droidlistener::disconnected()
    {
        qDebug() << "xandOs: disconnecting...";
        disconnect(m_socket, SIGNAL(disconnected()), this, SLOT(disconnected()));
        disconnect(m_socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
        m_socket->close();
    }