--- nextcloud-client-2.5.3.orig/src/3rdparty/kmessagewidget/kmessagewidget.cpp	2019-07-26 18:40:34.949349387 +0000
+++ nextcloud-client-2.5.3/src/3rdparty/kmessagewidget/kmessagewidget.cpp	2019-07-26 18:41:39.866478051 +0000
@@ -105,6 +105,9 @@
     q->setMessageType(KMessageWidget::Information);
 }
 
+template <typename T>
+constexpr typename std::add_const<T>::type &qAsConst(T &t) noexcept { return t; }
+
 void KMessageWidgetPrivate::createLayout()
 {
     delete content->layout();
--- b/src/libsync/abstractnetworkjob.cpp
+++ a/src/libsync/abstractnetworkjob.cpp
@@ -160,37 +160,6 @@ void AbstractNetworkJob::slotFinished()
         qCWarning(lcNetworkJob) << "SslHandshakeFailedError: " << errorString() << " : can be caused by a webserver wanting SSL client certificates";
     }
 
-   // Qt doesn't yet transparently resend HTTP2 requests, do so here
-    const auto maxHttp2Resends = 5;
-    QByteArray verb = requestVerb(*reply());
-    if (_reply->error() == QNetworkReply::ContentReSendError
-        && _reply->attribute(QNetworkRequest::HTTP2WasUsedAttribute).toBool()) {
-
-        if ((_requestBody && !_requestBody->isSequential()) || verb.isEmpty()) {
-            qCWarning(lcNetworkJob) << "Can't resend HTTP2 request, verb or body not suitable"
-                                    << _reply->request().url() << verb << _requestBody;
-        } else if (_http2ResendCount >= maxHttp2Resends) {
-            qCWarning(lcNetworkJob) << "Not resending HTTP2 request, number of resends exhausted"
-                                    << _reply->request().url() << _http2ResendCount;
-        } else {
-            qCInfo(lcNetworkJob) << "HTTP2 resending" << _reply->request().url();
-            _http2ResendCount++;
-
-            resetTimeout();
-            if (_requestBody) {
-                if(!_requestBody->isOpen())
-                   _requestBody->open(QIODevice::ReadOnly);
-                _requestBody->seek(0);
-            }
-            sendRequest(
-                verb,
-                _reply->request().url(),
-                _reply->request(),
-                _requestBody);
-            return;
-        }
-    }
-
     if (_reply->error() != QNetworkReply::NoError) {
         if (!_ignoreCredentialFailure || _reply->error() != QNetworkReply::AuthenticationRequiredError) {
             qCWarning(lcNetworkJob) << _reply->error() << errorString()
--- b/src/libsync/abstractnetworkjob.h
+++ a/src/libsync/abstractnetworkjob.h
@@ -188,8 +188,7 @@ private:
     QPointer<QNetworkReply> _reply; // (QPointer because the NetworkManager may be destroyed before the jobs at exit)
     QString _path;
     QTimer _timer;
-    int _redirectCount = 0;
-    int _http2ResendCount = 0;
+    int _redirectCount;
 
     // Set by the xyzRequest() functions and needed to be able to redirect
     // requests, should it be required.