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QNetworkAccessManager / QNetworkRequest gets different response than CURL



  • Hallo,

    I am writing a Plugin to Jira via REST API.

    Now I am trying to download an Attachment

    CURL

    c:\portable\curl\curl-7.71.0-win64-mingw\bin>curl.exe -D- -X GET -H "Authorization: Basic ENCODED_STRING_CENSORED" https://XXXX.atlassian.net/secure/attachment/10000/overqualified.jpg.webp
    HTTP/2 302
    server: AtlassianProxy/1.15.8.1
    cache-control: no-cache, no-store, must-revalidate
    content-type: image/webp
    strict-transport-security: max-age=315360000; includeSubDomains; preload
    date: Sat, 29 Aug 2020 01:32:27 GMT
    atl-traceid: XXX
    x-arequestid:XXX
    x-aaccountid: XXX
    location: https://api.media.atlassian.com/CENSORED_FOR_SECURITY=overqualified.jpg.webp
    expires: Thu, 01 Jan 1970 01:59:59 EET
    pragma: no-cache
    x-xss-protection: 1; mode=block
    timing-allow-origin: *
    x-content-type-options: nosniff
    micros-issuer: micros/edge-authenticator
    set-cookie: XXXX
    expect-ct: report-uri="https://web-security-reports.services.atlassian.com/expect-ct-report/global-proxy", enforce, max-age=86400
    content-length: 0
    

    Now my Code with QT

    QByteArray JiraWidget::downloadAttachment(const QString& Url, JWidget* sender)
    {
    	auto* man = new QNetworkAccessManager();
    	connect(man, &QNetworkAccessManager::finished, &this->synchronous, &QEventLoop::quit);
    	auto req = QNetworkRequest(QUrl(url));
    	//req.setHeader(QNetworkRequest::KnownHeaders::ContentTypeHeader, "image/webp");
    	//req.setRawHeader("Accept", "image/webp");
    	req.setRawHeader("Authorization", "Basic " + this->authArray.toBase64());
    	auto* reply = man->get(req);
    	this->synchronous.exec();
    	while (!reply->isFinished())
    		std::this_thread::sleep_for(std::chrono::milliseconds(500));
    	auto code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
    	auto error = reply->errorString();
    	auto resp = reply->readAll();
    	auto loc = reply->rawHeaderList();
    	for (auto& arr : loc) {
    		qDebug() << arr;
    		qDebug() << reply->rawHeader(arr);
    		int i = 0;
    	}
    	delete man;
    	return resp;
    }
    

    Gets as Header
    Content-Type: text/html;charset=UTF-8

    and location is /secure/MyJiraHome.jspa

    Why is CURL retrieving the correct location while my Application fails?


  • Qt Champions 2019

    Use wireshark, take a look what curl and Qt really sends as request.

    Why do you block the ui for such stuff?


  • Lifetime Qt Champion

    Hi,

    Beside @Christian-Ehrlicher point, are you getting any redirection ?



  • @Christian-Ehrlicher said in QNetworkAccessManager / QNetworkRequest gets different response than CURL:

    Use wireshark, take a look what curl and Qt really sends as request.

    Why do you block the ui for such stuff?

    By looking the code on this Forum I found the typo responsible for the behaviour.
    I should move the Download stuff into a new Thread.
    synchronous Download is more comfortable in this situation.


  • Qt Champions 2019

    @QtCoder87 said in QNetworkAccessManager / QNetworkRequest gets different response than CURL:

    I should move the Download stuff into a new Thread.
    synchronous Download is more comfortable in this situation.

    This contradicts itself ...


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