qtdeclarative/examples/qml/networkaccessmanagerfactory/main.cpp

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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
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** This file is part of the demonstration applications of the Qt Toolkit.
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#include <QCommandLineParser>
#include <QGuiApplication>
#include <QNetworkAccessManager>
#include <QNetworkProxy>
#include <QQmlEngine>
#include <QQmlNetworkAccessManagerFactory>
#include <QtQuick/QQuickView>
/*
This example illustrates using a QQmlNetworkAccessManagerFactory to
create a QNetworkAccessManager with a proxy.
Usage:
networkaccessmanagerfactory [-host <proxy> -port <port>] [file]
*/
#ifndef QT_NO_NETWORKPROXY
static QString proxyHost;
static int proxyPort = 0;
#endif // !QT_NO_NETWORKPROXY
class MyNetworkAccessManagerFactory : public QQmlNetworkAccessManagerFactory
{
public:
virtual QNetworkAccessManager *create(QObject *parent);
};
QNetworkAccessManager *MyNetworkAccessManagerFactory::create(QObject *parent)
{
QNetworkAccessManager *nam = new QNetworkAccessManager(parent);
#ifndef QT_NO_NETWORKPROXY
if (!proxyHost.isEmpty()) {
qDebug() << "Created QNetworkAccessManager using proxy" << (proxyHost + ":" + QString::number(proxyPort));
QNetworkProxy proxy(QNetworkProxy::HttpCachingProxy, proxyHost, proxyPort);
nam->setProxy(proxy);
}
#endif // !QT_NO_NETWORKPROXY
return nam;
}
int main(int argc, char ** argv)
{
QUrl source("qrc:view.qml");
QGuiApplication app(argc, argv);
QCommandLineParser parser;
#ifndef QT_NO_NETWORKPROXY
QCommandLineOption proxyHostOption("host", "The proxy host to use.", "host");
parser.addOption(proxyHostOption);
QCommandLineOption proxyPortOption("port", "The proxy port to use.", "port", "0");
parser.addOption(proxyPortOption);
#endif // !QT_NO_NETWORKPROXY
parser.addPositionalArgument("file", "The file to use.");
QCommandLineOption helpOption = parser.addHelpOption();
parser.setSingleDashWordOptionMode(QCommandLineParser::ParseAsLongOptions);
QStringList arguments = QCoreApplication::arguments();
if (!parser.parse(arguments)) {
qWarning() << parser.helpText() << '\n' << parser.errorText();
exit(1);
}
if (parser.isSet(helpOption)) {
qWarning() << parser.helpText();
exit(0);
}
#ifndef QT_NO_NETWORKPROXY
if (parser.isSet(proxyHostOption))
proxyHost = parser.value(proxyHostOption);
if (parser.isSet(proxyPortOption)) {
bool ok = true;
proxyPort = parser.value(proxyPortOption).toInt(&ok);
if (!ok || proxyPort < 1 || proxyPort > 65535) {
qWarning() << parser.helpText() << "\nNo valid port given. It should\
be a number between 1 and 65535";
exit(1);
}
}
#endif // !QT_NO_NETWORKPROXY
if (parser.positionalArguments().count() == 1)
source = QUrl::fromLocalFile(parser.positionalArguments().first());
QQuickView view;
view.engine()->setNetworkAccessManagerFactory(new MyNetworkAccessManagerFactory);
view.setSource(source);
view.show();
return app.exec();
}