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https://github.com/subsurface/subsurface.git
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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
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#include <QObject>
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#include <QTimer>
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#include <QNetworkAccessManager>
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#include <QNetworkReply>
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#include <QEventLoop>
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#include "pref.h"
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#include "helpers.h"
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#include "checkcloudconnection.h"
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CheckCloudConnection::CheckCloudConnection(QObject *parent) : QObject(parent)
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{
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}
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#define TEAPOT "/make-latte?number-of-shots=3"
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#define HTTP_I_AM_A_TEAPOT 418
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#define MILK "Linus does not like non-fat milk"
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bool CheckCloudConnection::checkServer()
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{
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QTimer timer;
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timer.setSingleShot(true);
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QEventLoop loop;
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QNetworkRequest request;
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request.setRawHeader("Accept", "text/plain");
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request.setRawHeader("User-Agent", getUserAgent().toUtf8());
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request.setUrl(QString(prefs.cloud_base_url) + TEAPOT);
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QNetworkAccessManager *mgr = new QNetworkAccessManager();
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QNetworkReply *reply = mgr->get(request);
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connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
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connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
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timer.start(2000); // wait two seconds
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loop.exec();
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if (timer.isActive()) {
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// didn't time out, did we get the right response?
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timer.stop();
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if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == HTTP_I_AM_A_TEAPOT &&
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reply->readAll() == QByteArray(MILK)) {
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reply->deleteLater();
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mgr->deleteLater();
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return true;
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}
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// qDebug() << "did not get expected response - server unreachable" <<
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// reply->error() << reply->errorString() <<
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// reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() <<
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// reply->readAll();
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} else {
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disconnect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
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reply->abort();
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}
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reply->deleteLater();
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mgr->deleteLater();
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return false;
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}
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// helper to be used from C code
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extern "C" bool canReachCloudServer()
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{
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return CheckCloudConnection::checkServer();
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}
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