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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qstring.h>
+
+#include "http2protocol_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_LOGGING_CATEGORY(QT_HTTP2, "qt.network.http2")
+
+namespace Http2
+{
+
+// 3.5 HTTP/2 Connection Preface:
+// "That is, the connection preface starts with the string
+// PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n)."
+const char Http2clientPreface[clientPrefaceLength] =
+ {0x50, 0x52, 0x49, 0x20, 0x2a, 0x20,
+ 0x48, 0x54, 0x54, 0x50, 0x2f, 0x32,
+ 0x2e, 0x30, 0x0d, 0x0a, 0x0d, 0x0a,
+ 0x53, 0x4d, 0x0d, 0x0a, 0x0d, 0x0a};
+
+
+void qt_error(quint32 errorCode, QNetworkReply::NetworkError &error,
+ QString &errorMessage)
+{
+ if (errorCode > quint32(HTTP_1_1_REQUIRED)) {
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("RST_STREAM with unknown error code (%1)");
+ errorMessage = errorMessage.arg(errorCode);
+ return;
+ }
+
+ const Http2Error http2Error = Http2Error(errorCode);
+
+ switch (http2Error) {
+ case HTTP2_NO_ERROR:
+ error = QNetworkReply::NoError;
+ errorMessage.clear();
+ break;
+ case PROTOCOL_ERROR:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("HTTP/2 protocol error");
+ break;
+ case INTERNAL_ERROR:
+ error = QNetworkReply::InternalServerError;
+ errorMessage = QLatin1String("Internal server error");
+ break;
+ case FLOW_CONTROL_ERROR:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Flow control error");
+ break;
+ case SETTINGS_TIMEOUT:
+ error = QNetworkReply::TimeoutError;
+ errorMessage = QLatin1String("SETTINGS ACK timeout error");
+ break;
+ case STREAM_CLOSED:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Server received frame(s) on a half-closed stream");
+ break;
+ case FRAME_SIZE_ERROR:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Server received a frame with an invalid size");
+ break;
+ case REFUSE_STREAM:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Server refused a stream");
+ break;
+ case CANCEL:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Stream is no longer needed");
+ break;
+ case COMPRESSION_ERROR:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Server is unable to maintain the "
+ "header compression context for the connection");
+ break;
+ case CONNECT_ERROR:
+ // TODO: in Qt6 we'll have to add more error codes in QNetworkReply.
+ error = QNetworkReply::UnknownNetworkError;
+ errorMessage = QLatin1String("The connection established in response "
+ "to a CONNECT request was reset or abnormally closed");
+ break;
+ case ENHANCE_YOUR_CALM:
+ error = QNetworkReply::UnknownServerError;
+ errorMessage = QLatin1String("Server dislikes our behavior, excessive load detected.");
+ break;
+ case INADEQUATE_SECURITY:
+ error = QNetworkReply::ContentAccessDenied;
+ errorMessage = QLatin1String("The underlying transport has properties "
+ "that do not meet minimum security "
+ "requirements");
+ break;
+ case HTTP_1_1_REQUIRED:
+ error = QNetworkReply::ProtocolFailure;
+ errorMessage = QLatin1String("Server requires that HTTP/1.1 "
+ "be used instead of HTTP/2.");
+ }
+}
+
+QString qt_error_string(quint32 errorCode)
+{
+ QNetworkReply::NetworkError error = QNetworkReply::NoError;
+ QString message;
+ qt_error(errorCode, error, message);
+ return message;
+}
+
+QNetworkReply::NetworkError qt_error(quint32 errorCode)
+{
+ QNetworkReply::NetworkError error = QNetworkReply::NoError;
+ QString message;
+ qt_error(errorCode, error, message);
+ return error;
+}
+
+}
+
+QT_END_NAMESPACE