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50
51#include <QCommandLineParser>
52#include <QGuiApplication>
53#include <QNetworkAccessManager>
54#include <QNetworkProxy>
55
56#include <QQmlEngine>
57#include <QQmlNetworkAccessManagerFactory>
58#include <QtQuick/QQuickView>
59
60
61/*
62 This example illustrates using a QQmlNetworkAccessManagerFactory to
63 create a QNetworkAccessManager with a proxy.
64
65 Usage:
66 networkaccessmanagerfactory [-host <proxy> -port <port>] [file]
67*/
68
69#if QT_CONFIG(networkproxy)
70static QString proxyHost;
71static int proxyPort = 0;
72#endif // networkproxy
73
74class MyNetworkAccessManagerFactory : public QQmlNetworkAccessManagerFactory
75{
76public:
77 QNetworkAccessManager *create(QObject *parent) override;
78};
79
80QNetworkAccessManager *MyNetworkAccessManagerFactory::create(QObject *parent)
81{
82 QNetworkAccessManager *nam = new QNetworkAccessManager(parent);
83#if QT_CONFIG(networkproxy)
84 if (!proxyHost.isEmpty()) {
85 qDebug() << "Created QNetworkAccessManager using proxy" << (proxyHost + ":" + QString::number(proxyPort));
86 QNetworkProxy proxy(QNetworkProxy::HttpCachingProxy, proxyHost, proxyPort);
87 nam->setProxy(proxy);
88 }
89#endif // networkproxy
90
91 return nam;
92}
93
94int main(int argc, char ** argv)
95{
96 QUrl source("qrc:view.qml");
97
98 QGuiApplication app(argc, argv);
99
100 QCommandLineParser parser;
101#if QT_CONFIG(networkproxy)
102 QCommandLineOption proxyHostOption("host", "The proxy host to use.", "host");
103 parser.addOption(commandLineOption: proxyHostOption);
104 QCommandLineOption proxyPortOption("port", "The proxy port to use.", "port", "0");
105 parser.addOption(commandLineOption: proxyPortOption);
106#endif // networkproxy
107 parser.addPositionalArgument(name: "file", description: "The file to use.");
108 QCommandLineOption helpOption = parser.addHelpOption();
109 parser.setSingleDashWordOptionMode(QCommandLineParser::ParseAsLongOptions);
110 QStringList arguments = QCoreApplication::arguments();
111 if (!parser.parse(arguments)) {
112 qWarning() << parser.helpText() << '\n' << parser.errorText();
113 exit(status: 1);
114 }
115 if (parser.isSet(option: helpOption)) {
116 qWarning() << parser.helpText();
117 exit(status: 0);
118 }
119#if QT_CONFIG(networkproxy)
120 if (parser.isSet(option: proxyHostOption))
121 proxyHost = parser.value(option: proxyHostOption);
122 if (parser.isSet(option: proxyPortOption)) {
123 bool ok = true;
124 proxyPort = parser.value(option: proxyPortOption).toInt(ok: &ok);
125 if (!ok || proxyPort < 1 || proxyPort > 65535) {
126 qWarning() << parser.helpText() << "\nNo valid port given. It should\
127 be a number between 1 and 65535";
128 exit(status: 1);
129 }
130 }
131#endif // networkproxy
132 if (parser.positionalArguments().count() == 1)
133 source = QUrl::fromLocalFile(localfile: parser.positionalArguments().first());
134
135 QQuickView view;
136 MyNetworkAccessManagerFactory networkManagerFactory;
137 view.engine()->setNetworkAccessManagerFactory(&networkManagerFactory);
138
139 view.setSource(source);
140 view.show();
141
142 return app.exec();
143}
144
145

source code of qtdeclarative/examples/qml/networkaccessmanagerfactory/main.cpp