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d0fba482b7
If a user gets stuck accessing cloud storage it's often hard to figure out which step is hanging which makes it much harder to narrow down the problem. With this patch calling Subsurface with '-v' will give somewhat finely grained progress information on stderr. Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
68 lines
2 KiB
C++
68 lines
2 KiB
C++
#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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if (verbose > 1)
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qWarning() << "Cloud storage: successfully checked connection to cloud server";
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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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if (verbose)
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qWarning() << "Cloud storage: unable to connect to cloud server";
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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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if (verbose)
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qWarning() << "Cloud storage: checking connection to cloud server";
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return CheckCloudConnection::checkServer();
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}
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