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|
/****************************************************************************
**
** Copyright (C) 2014 BlackBerry Limited. All rights reserved.
** 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 <private/qspdyprotocolhandler_p.h>
#include <private/qnoncontiguousbytedevice_p.h>
#include <private/qhttpnetworkconnectionchannel_p.h>
#include <QtCore/QtEndian>
#if !defined(QT_NO_SSL)
QT_BEGIN_NAMESPACE
static const char spdyDictionary[] = {
0x00, 0x00, 0x00, 0x07, 0x6f, 0x70, 0x74, 0x69, // ....opti
0x6f, 0x6e, 0x73, 0x00, 0x00, 0x00, 0x04, 0x68, // ons....h
0x65, 0x61, 0x64, 0x00, 0x00, 0x00, 0x04, 0x70, // ead....p
0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x03, 0x70, // ost....p
0x75, 0x74, 0x00, 0x00, 0x00, 0x06, 0x64, 0x65, // ut....de
0x6c, 0x65, 0x74, 0x65, 0x00, 0x00, 0x00, 0x05, // lete....
0x74, 0x72, 0x61, 0x63, 0x65, 0x00, 0x00, 0x00, // trace...
0x06, 0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x00, // .accept.
0x00, 0x00, 0x0e, 0x61, 0x63, 0x63, 0x65, 0x70, // ...accep
0x74, 0x2d, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65, // t-charse
0x74, 0x00, 0x00, 0x00, 0x0f, 0x61, 0x63, 0x63, // t....acc
0x65, 0x70, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f, // ept-enco
0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x0f, // ding....
0x61, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x6c, // accept-l
0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x00, // anguage.
0x00, 0x00, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x70, // ...accep
0x74, 0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x73, // t-ranges
0x00, 0x00, 0x00, 0x03, 0x61, 0x67, 0x65, 0x00, // ....age.
0x00, 0x00, 0x05, 0x61, 0x6c, 0x6c, 0x6f, 0x77, // ...allow
0x00, 0x00, 0x00, 0x0d, 0x61, 0x75, 0x74, 0x68, // ....auth
0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, // orizatio
0x6e, 0x00, 0x00, 0x00, 0x0d, 0x63, 0x61, 0x63, // n....cac
0x68, 0x65, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, // he-contr
0x6f, 0x6c, 0x00, 0x00, 0x00, 0x0a, 0x63, 0x6f, // ol....co
0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, // nnection
0x00, 0x00, 0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74, // ....cont
0x65, 0x6e, 0x74, 0x2d, 0x62, 0x61, 0x73, 0x65, // ent-base
0x00, 0x00, 0x00, 0x10, 0x63, 0x6f, 0x6e, 0x74, // ....cont
0x65, 0x6e, 0x74, 0x2d, 0x65, 0x6e, 0x63, 0x6f, // ent-enco
0x64, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x10, // ding....
0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, // content-
0x6c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, // language
0x00, 0x00, 0x00, 0x0e, 0x63, 0x6f, 0x6e, 0x74, // ....cont
0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x65, 0x6e, 0x67, // ent-leng
0x74, 0x68, 0x00, 0x00, 0x00, 0x10, 0x63, 0x6f, // th....co
0x6e, 0x74, 0x65, 0x6e, 0x74, 0x2d, 0x6c, 0x6f, // ntent-lo
0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, // cation..
0x00, 0x0b, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, // ..conten
0x74, 0x2d, 0x6d, 0x64, 0x35, 0x00, 0x00, 0x00, // t-md5...
0x0d, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, // .content
0x2d, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00, // -range..
0x00, 0x0c, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, // ..conten
0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x00, 0x00, // t-type..
0x00, 0x04, 0x64, 0x61, 0x74, 0x65, 0x00, 0x00, // ..date..
0x00, 0x04, 0x65, 0x74, 0x61, 0x67, 0x00, 0x00, // ..etag..
0x00, 0x06, 0x65, 0x78, 0x70, 0x65, 0x63, 0x74, // ..expect
0x00, 0x00, 0x00, 0x07, 0x65, 0x78, 0x70, 0x69, // ....expi
0x72, 0x65, 0x73, 0x00, 0x00, 0x00, 0x04, 0x66, // res....f
0x72, 0x6f, 0x6d, 0x00, 0x00, 0x00, 0x04, 0x68, // rom....h
0x6f, 0x73, 0x74, 0x00, 0x00, 0x00, 0x08, 0x69, // ost....i
0x66, 0x2d, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x00, // f-match.
0x00, 0x00, 0x11, 0x69, 0x66, 0x2d, 0x6d, 0x6f, // ...if-mo
0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x2d, 0x73, // dified-s
0x69, 0x6e, 0x63, 0x65, 0x00, 0x00, 0x00, 0x0d, // ince....
0x69, 0x66, 0x2d, 0x6e, 0x6f, 0x6e, 0x65, 0x2d, // if-none-
0x6d, 0x61, 0x74, 0x63, 0x68, 0x00, 0x00, 0x00, // match...
0x08, 0x69, 0x66, 0x2d, 0x72, 0x61, 0x6e, 0x67, // .if-rang
0x65, 0x00, 0x00, 0x00, 0x13, 0x69, 0x66, 0x2d, // e....if-
0x75, 0x6e, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, // unmodifi
0x65, 0x64, 0x2d, 0x73, 0x69, 0x6e, 0x63, 0x65, // ed-since
0x00, 0x00, 0x00, 0x0d, 0x6c, 0x61, 0x73, 0x74, // ....last
0x2d, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, // -modifie
0x64, 0x00, 0x00, 0x00, 0x08, 0x6c, 0x6f, 0x63, // d....loc
0x61, 0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00, // ation...
0x0c, 0x6d, 0x61, 0x78, 0x2d, 0x66, 0x6f, 0x72, // .max-for
0x77, 0x61, 0x72, 0x64, 0x73, 0x00, 0x00, 0x00, // wards...
0x06, 0x70, 0x72, 0x61, 0x67, 0x6d, 0x61, 0x00, // .pragma.
0x00, 0x00, 0x12, 0x70, 0x72, 0x6f, 0x78, 0x79, // ...proxy
0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, 0x74, // -authent
0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00, 0x00, // icate...
0x13, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2d, 0x61, // .proxy-a
0x75, 0x74, 0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61, // uthoriza
0x74, 0x69, 0x6f, 0x6e, 0x00, 0x00, 0x00, 0x05, // tion....
0x72, 0x61, 0x6e, 0x67, 0x65, 0x00, 0x00, 0x00, // range...
0x07, 0x72, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72, // .referer
0x00, 0x00, 0x00, 0x0b, 0x72, 0x65, 0x74, 0x72, // ....retr
0x79, 0x2d, 0x61, 0x66, 0x74, 0x65, 0x72, 0x00, // y-after.
0x00, 0x00, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, // ...serve
0x72, 0x00, 0x00, 0x00, 0x02, 0x74, 0x65, 0x00, // r....te.
0x00, 0x00, 0x07, 0x74, 0x72, 0x61, 0x69, 0x6c, // ...trail
0x65, 0x72, 0x00, 0x00, 0x00, 0x11, 0x74, 0x72, // er....tr
0x61, 0x6e, 0x73, 0x66, 0x65, 0x72, 0x2d, 0x65, // ansfer-e
0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x00, // ncoding.
0x00, 0x00, 0x07, 0x75, 0x70, 0x67, 0x72, 0x61, // ...upgra
0x64, 0x65, 0x00, 0x00, 0x00, 0x0a, 0x75, 0x73, // de....us
0x65, 0x72, 0x2d, 0x61, 0x67, 0x65, 0x6e, 0x74, // er-agent
0x00, 0x00, 0x00, 0x04, 0x76, 0x61, 0x72, 0x79, // ....vary
0x00, 0x00, 0x00, 0x03, 0x76, 0x69, 0x61, 0x00, // ....via.
0x00, 0x00, 0x07, 0x77, 0x61, 0x72, 0x6e, 0x69, // ...warni
0x6e, 0x67, 0x00, 0x00, 0x00, 0x10, 0x77, 0x77, // ng....ww
0x77, 0x2d, 0x61, 0x75, 0x74, 0x68, 0x65, 0x6e, // w-authen
0x74, 0x69, 0x63, 0x61, 0x74, 0x65, 0x00, 0x00, // ticate..
0x00, 0x06, 0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, // ..method
0x00, 0x00, 0x00, 0x03, 0x67, 0x65, 0x74, 0x00, // ....get.
0x00, 0x00, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, // ...statu
0x73, 0x00, 0x00, 0x00, 0x06, 0x32, 0x30, 0x30, // s....200
0x20, 0x4f, 0x4b, 0x00, 0x00, 0x00, 0x07, 0x76, // .OK....v
0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x00, 0x00, // ersion..
0x00, 0x08, 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, // ..HTTP.1
0x2e, 0x31, 0x00, 0x00, 0x00, 0x03, 0x75, 0x72, // .1....ur
0x6c, 0x00, 0x00, 0x00, 0x06, 0x70, 0x75, 0x62, // l....pub
0x6c, 0x69, 0x63, 0x00, 0x00, 0x00, 0x0a, 0x73, // lic....s
0x65, 0x74, 0x2d, 0x63, 0x6f, 0x6f, 0x6b, 0x69, // et-cooki
0x65, 0x00, 0x00, 0x00, 0x0a, 0x6b, 0x65, 0x65, // e....kee
0x70, 0x2d, 0x61, 0x6c, 0x69, 0x76, 0x65, 0x00, // p-alive.
0x00, 0x00, 0x06, 0x6f, 0x72, 0x69, 0x67, 0x69, // ...origi
0x6e, 0x31, 0x30, 0x30, 0x31, 0x30, 0x31, 0x32, // n1001012
0x30, 0x31, 0x32, 0x30, 0x32, 0x32, 0x30, 0x35, // 01202205
0x32, 0x30, 0x36, 0x33, 0x30, 0x30, 0x33, 0x30, // 20630030
0x32, 0x33, 0x30, 0x33, 0x33, 0x30, 0x34, 0x33, // 23033043
0x30, 0x35, 0x33, 0x30, 0x36, 0x33, 0x30, 0x37, // 05306307
0x34, 0x30, 0x32, 0x34, 0x30, 0x35, 0x34, 0x30, // 40240540
0x36, 0x34, 0x30, 0x37, 0x34, 0x30, 0x38, 0x34, // 64074084
0x30, 0x39, 0x34, 0x31, 0x30, 0x34, 0x31, 0x31, // 09410411
0x34, 0x31, 0x32, 0x34, 0x31, 0x33, 0x34, 0x31, // 41241341
0x34, 0x34, 0x31, 0x35, 0x34, 0x31, 0x36, 0x34, // 44154164
0x31, 0x37, 0x35, 0x30, 0x32, 0x35, 0x30, 0x34, // 17502504
0x35, 0x30, 0x35, 0x32, 0x30, 0x33, 0x20, 0x4e, // 505203.N
0x6f, 0x6e, 0x2d, 0x41, 0x75, 0x74, 0x68, 0x6f, // on-Autho
0x72, 0x69, 0x74, 0x61, 0x74, 0x69, 0x76, 0x65, // ritative
0x20, 0x49, 0x6e, 0x66, 0x6f, 0x72, 0x6d, 0x61, // .Informa
0x74, 0x69, 0x6f, 0x6e, 0x32, 0x30, 0x34, 0x20, // tion204.
0x4e, 0x6f, 0x20, 0x43, 0x6f, 0x6e, 0x74, 0x65, // No.Conte
0x6e, 0x74, 0x33, 0x30, 0x31, 0x20, 0x4d, 0x6f, // nt301.Mo
0x76, 0x65, 0x64, 0x20, 0x50, 0x65, 0x72, 0x6d, // ved.Perm
0x61, 0x6e, 0x65, 0x6e, 0x74, 0x6c, 0x79, 0x34, // anently4
0x30, 0x30, 0x20, 0x42, 0x61, 0x64, 0x20, 0x52, // 00.Bad.R
0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x34, 0x30, // equest40
0x31, 0x20, 0x55, 0x6e, 0x61, 0x75, 0x74, 0x68, // 1.Unauth
0x6f, 0x72, 0x69, 0x7a, 0x65, 0x64, 0x34, 0x30, // orized40
0x33, 0x20, 0x46, 0x6f, 0x72, 0x62, 0x69, 0x64, // 3.Forbid
0x64, 0x65, 0x6e, 0x34, 0x30, 0x34, 0x20, 0x4e, // den404.N
0x6f, 0x74, 0x20, 0x46, 0x6f, 0x75, 0x6e, 0x64, // ot.Found
0x35, 0x30, 0x30, 0x20, 0x49, 0x6e, 0x74, 0x65, // 500.Inte
0x72, 0x6e, 0x61, 0x6c, 0x20, 0x53, 0x65, 0x72, // rnal.Ser
0x76, 0x65, 0x72, 0x20, 0x45, 0x72, 0x72, 0x6f, // ver.Erro
0x72, 0x35, 0x30, 0x31, 0x20, 0x4e, 0x6f, 0x74, // r501.Not
0x20, 0x49, 0x6d, 0x70, 0x6c, 0x65, 0x6d, 0x65, // .Impleme
0x6e, 0x74, 0x65, 0x64, 0x35, 0x30, 0x33, 0x20, // nted503.
0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x20, // Service.
0x55, 0x6e, 0x61, 0x76, 0x61, 0x69, 0x6c, 0x61, // Unavaila
0x62, 0x6c, 0x65, 0x4a, 0x61, 0x6e, 0x20, 0x46, // bleJan.F
0x65, 0x62, 0x20, 0x4d, 0x61, 0x72, 0x20, 0x41, // eb.Mar.A
0x70, 0x72, 0x20, 0x4d, 0x61, 0x79, 0x20, 0x4a, // pr.May.J
0x75, 0x6e, 0x20, 0x4a, 0x75, 0x6c, 0x20, 0x41, // un.Jul.A
0x75, 0x67, 0x20, 0x53, 0x65, 0x70, 0x74, 0x20, // ug.Sept.
0x4f, 0x63, 0x74, 0x20, 0x4e, 0x6f, 0x76, 0x20, // Oct.Nov.
0x44, 0x65, 0x63, 0x20, 0x30, 0x30, 0x3a, 0x30, // Dec.00.0
0x30, 0x3a, 0x30, 0x30, 0x20, 0x4d, 0x6f, 0x6e, // 0.00.Mon
0x2c, 0x20, 0x54, 0x75, 0x65, 0x2c, 0x20, 0x57, // ..Tue..W
0x65, 0x64, 0x2c, 0x20, 0x54, 0x68, 0x75, 0x2c, // ed..Thu.
0x20, 0x46, 0x72, 0x69, 0x2c, 0x20, 0x53, 0x61, // .Fri..Sa
0x74, 0x2c, 0x20, 0x53, 0x75, 0x6e, 0x2c, 0x20, // t..Sun..
0x47, 0x4d, 0x54, 0x63, 0x68, 0x75, 0x6e, 0x6b, // GMTchunk
0x65, 0x64, 0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, // ed.text.
0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x69, 0x6d, 0x61, // html.ima
0x67, 0x65, 0x2f, 0x70, 0x6e, 0x67, 0x2c, 0x69, // ge.png.i
0x6d, 0x61, 0x67, 0x65, 0x2f, 0x6a, 0x70, 0x67, // mage.jpg
0x2c, 0x69, 0x6d, 0x61, 0x67, 0x65, 0x2f, 0x67, // .image.g
0x69, 0x66, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, // if.appli
0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, // cation.x
0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, // ml.appli
0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, // cation.x
0x68, 0x74, 0x6d, 0x6c, 0x2b, 0x78, 0x6d, 0x6c, // html.xml
0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c, // .text.pl
0x61, 0x69, 0x6e, 0x2c, 0x74, 0x65, 0x78, 0x74, // ain.text
0x2f, 0x6a, 0x61, 0x76, 0x61, 0x73, 0x63, 0x72, // .javascr
0x69, 0x70, 0x74, 0x2c, 0x70, 0x75, 0x62, 0x6c, // ipt.publ
0x69, 0x63, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, // icprivat
0x65, 0x6d, 0x61, 0x78, 0x2d, 0x61, 0x67, 0x65, // emax-age
0x3d, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x64, 0x65, // .gzip.de
0x66, 0x6c, 0x61, 0x74, 0x65, 0x2c, 0x73, 0x64, // flate.sd
0x63, 0x68, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65, // chcharse
0x74, 0x3d, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x63, // t.utf-8c
0x68, 0x61, 0x72, 0x73, 0x65, 0x74, 0x3d, 0x69, // harset.i
0x73, 0x6f, 0x2d, 0x38, 0x38, 0x35, 0x39, 0x2d, // so-8859-
0x31, 0x2c, 0x75, 0x74, 0x66, 0x2d, 0x2c, 0x2a, // 1.utf-..
0x2c, 0x65, 0x6e, 0x71, 0x3d, 0x30, 0x2e // .enq.0.
};
// uncomment to debug
//static void printHex(const QByteArray &ba)
//{
// QByteArray hex;
// QByteArray clearText;
// for (int a = 0; a < ba.count(); ++a) {
// QByteArray currentHexChar = QByteArray(1, ba.at(a)).toHex().rightJustified(2, ' ');
// QByteArray currentChar;
// if (ba.at(a) >= 32 && ba.at(a) < 126) { // if ASCII, print the letter
// currentChar = QByteArray(1, ba.at(a));
// } else {
// currentChar = " ";
// }
// clearText.append(currentChar.rightJustified(2, ' '));
// hex.append(currentHexChar);
// hex.append(' ');
// clearText.append(' ');
// }
// int chunkSize = 102; // 12 == 4 bytes per line
// for (int a = 0; a < hex.count(); a += chunkSize) {
// qDebug() << hex.mid(a, chunkSize);
// qDebug() << clearText.mid(a, chunkSize);
// }
//}
QSpdyProtocolHandler::QSpdyProtocolHandler(QHttpNetworkConnectionChannel *channel)
: QObject(nullptr), QAbstractProtocolHandler(channel),
m_nextStreamID(-1),
m_maxConcurrentStreams(100), // 100 is recommended in the SPDY RFC
m_initialWindowSize(0),
m_waitingForCompleteStream(false)
{
m_inflateStream.zalloc = Z_NULL;
m_inflateStream.zfree = Z_NULL;
m_inflateStream.opaque = Z_NULL;
int zlibRet = inflateInit(&m_inflateStream);
Q_ASSERT(zlibRet == Z_OK);
m_deflateStream.zalloc = Z_NULL;
m_deflateStream.zfree = Z_NULL;
m_deflateStream.opaque = Z_NULL;
// Do actually not compress (i.e. compression level = 0)
// when sending the headers because of the CRIME attack
zlibRet = deflateInit(&m_deflateStream, /* compression level = */ 0);
Q_ASSERT(zlibRet == Z_OK);
Q_UNUSED(zlibRet); // silence -Wunused-variable
}
QSpdyProtocolHandler::~QSpdyProtocolHandler()
{
deflateEnd(&m_deflateStream);
deflateEnd(&m_inflateStream);
}
bool QSpdyProtocolHandler::sendRequest()
{
Q_ASSERT(!m_reply);
int maxPossibleRequests = m_maxConcurrentStreams - m_inFlightStreams.count();
Q_ASSERT(maxPossibleRequests >= 0);
if (maxPossibleRequests == 0)
return true; // return early if max concurrent requests are exceeded
m_channel->state = QHttpNetworkConnectionChannel::WritingState;
int requestsToSend = qMin(m_channel->spdyRequestsToSend.size(), maxPossibleRequests);
QMultiMap<int, HttpMessagePair>::iterator it = m_channel->spdyRequestsToSend.begin();
// requests will be ordered by priority (see QMultiMap doc)
for (int a = 0; a < requestsToSend; ++a) {
HttpMessagePair currentPair = *it;
QHttpNetworkRequest currentRequest = currentPair.first;
QHttpNetworkReply *currentReply = currentPair.second;
currentReply->setSpdyWasUsed(true);
qint32 streamID = generateNextStreamID();
m_streamIDs.insert(currentReply, streamID);
currentReply->setRequest(currentRequest);
currentReply->d_func()->connection = m_connection;
currentReply->d_func()->connectionChannel = m_channel;
m_inFlightStreams.insert(streamID, currentPair);
connect(currentReply, SIGNAL(destroyed(QObject*)), this, SLOT(_q_replyDestroyed(QObject*)));
sendSYN_STREAM(currentPair, streamID, /* associatedToStreamID = */ 0);
m_channel->spdyRequestsToSend.erase(it++);
}
m_channel->state = QHttpNetworkConnectionChannel::IdleState;
return true;
}
void QSpdyProtocolHandler::_q_replyDestroyed(QObject* reply)
{
qint32 streamID = m_streamIDs.take(reply);
if (m_inFlightStreams.remove(streamID))
sendRST_STREAM(streamID, RST_STREAM_CANCEL);
}
void QSpdyProtocolHandler::_q_receiveReply()
{
Q_ASSERT(m_socket);
// only run when the QHttpNetworkConnection is not currently being destructed, e.g.
// this function is called from _q_disconnected which is called because
// of ~QHttpNetworkConnectionPrivate
if (!qobject_cast<QHttpNetworkConnection*>(m_connection)) {
return;
}
if (bytesAvailable() < 8)
return; // cannot read frame headers, wait for more data
char frameHeadersRaw[8];
if (!readNextChunk(8, frameHeadersRaw))
return; // this should not happen, we just checked
const QByteArray frameHeaders(frameHeadersRaw, 8); // ### try without memcpy
if (frameHeadersRaw[0] & 0x80) {
handleControlFrame(frameHeaders);
} else {
handleDataFrame(frameHeaders);
}
// after handling the current frame, check whether there is more data waiting
if (m_socket->bytesAvailable() > 0)
QMetaObject::invokeMethod(m_channel, "_q_receiveReply", Qt::QueuedConnection);
}
void QSpdyProtocolHandler::_q_readyRead()
{
_q_receiveReply();
}
static qint16 twoBytesToInt(const char *bytes)
{
return qFromBigEndian<qint16>(bytes);
}
static qint32 threeBytesToInt(const char *bytes)
{
return qFromBigEndian<qint32>(bytes) >> 8;
}
static qint32 fourBytesToInt(const char *bytes)
{
return qFromBigEndian<qint32>(bytes);
}
static void appendIntToThreeBytes(char *output, qint32 number)
{
qToBigEndian<qint16>(number, output + 1);
qToBigEndian<qint8>(number >> 16, output);
}
static void appendIntToFourBytes(char *output, qint32 number)
{
qToBigEndian<qint32>(number, output);
}
static QByteArray intToFourBytes(qint32 number) // ### try to use appendIntToFourBytes where possible
{
char data[4];
qToBigEndian<qint32>(number, data);
QByteArray ret(data, 4);
return ret;
}
static QByteArray intToThreeBytes(qint32 number)
{
char data[4];
qToBigEndian<qint32>(number << 8, data);
QByteArray ret(data, 3);
return ret;
}
static qint32 getStreamID(const char *bytes)
{
// eliminate most significant bit; it might be 0 or 1 depending on whether
// we are dealing with a control or data frame
return fourBytesToInt(bytes) & 0x3fffffff;
}
static QByteArray headerField(const QByteArray &name, const QByteArray &value)
{
QByteArray ret;
ret.reserve(name.count() + value.count() + 8); // 4 byte for length each
ret.append(intToFourBytes(name.count()));
ret.append(name);
ret.append(intToFourBytes(value.count()));
ret.append(value);
return ret;
}
bool QSpdyProtocolHandler::uncompressHeader(const QByteArray &input, QByteArray *output)
{
const size_t chunkSize = 1024;
char outputRaw[chunkSize];
// input bytes will not be changed by zlib, so it is safe to const_cast here
m_inflateStream.next_in = const_cast<Bytef *>(reinterpret_cast<const Bytef *>(input.constData()));
m_inflateStream.avail_in = input.count();
m_inflateStream.total_in = input.count();
int zlibRet;
do {
m_inflateStream.next_out = reinterpret_cast<Bytef *>(outputRaw);
m_inflateStream.avail_out = chunkSize;
zlibRet = inflate(&m_inflateStream, Z_SYNC_FLUSH);
if (zlibRet == Z_NEED_DICT) {
zlibRet = inflateSetDictionary(&m_inflateStream,
reinterpret_cast<const Bytef*>(spdyDictionary),
/* dictionaryLength = */ 1423);
Q_ASSERT(zlibRet == Z_OK);
continue;
}
switch (zlibRet) {
case Z_BUF_ERROR: {
if (m_inflateStream.avail_in == 0) {
int outputSize = chunkSize - m_inflateStream.avail_out;
output->append(outputRaw, outputSize);
m_inflateStream.avail_out = chunkSize;
}
break;
}
case Z_OK: {
int outputSize = chunkSize - m_inflateStream.avail_out;
output->append(outputRaw, outputSize);
break;
}
default: {
qWarning("got unexpected zlib return value: %d", zlibRet);
return false;
}
}
} while (m_inflateStream.avail_in > 0 && zlibRet != Z_STREAM_END);
Q_ASSERT(m_inflateStream.avail_in == 0);
return true;
}
QByteArray QSpdyProtocolHandler::composeHeader(const QHttpNetworkRequest &request)
{
QByteArray uncompressedHeader;
uncompressedHeader.reserve(300); // rough estimate
// calculate additional headers first, because we need to know the size
// ### do not partially copy the list, but restrict the set header fields
// in QHttpNetworkConnection
QVector<QPair<QByteArray, QByteArray> > additionalHeaders;
for (int a = 0; a < request.header().count(); ++a) {
QByteArray key = request.header().at(a).first;
if (key == "Connection" || key == "Host" || key == "Keep-Alive"
|| key == "Proxy-Connection" || key == "Transfer-Encoding")
continue; // those headers are not valid (section 3.2.1)
additionalHeaders.append(request.header().at(a));
}
qint32 numberOfHeaderPairs = 5 + additionalHeaders.count(); // 5 mandatory below + the additional ones
uncompressedHeader.append(intToFourBytes(numberOfHeaderPairs));
// mandatory header fields:
uncompressedHeader.append(headerField(":method", request.methodName()));
#ifndef QT_NO_NETWORKPROXY
bool useProxy = m_connection->d_func()->networkProxy.type() != QNetworkProxy::NoProxy;
uncompressedHeader.append(headerField(":path", request.uri(useProxy)));
#else
uncompressedHeader.append(headerField(":path", request.uri(false)));
#endif
uncompressedHeader.append(headerField(":version", "HTTP/1.1"));
uncompressedHeader.append(headerField(":host", request.url().authority(QUrl::FullyEncoded | QUrl::RemoveUserInfo).toLatin1()));
uncompressedHeader.append(headerField(":scheme", request.url().scheme().toLatin1()));
// end of mandatory header fields
// now add the additional headers
for (int a = 0; a < additionalHeaders.count(); ++a) {
uncompressedHeader.append(headerField(additionalHeaders.at(a).first.toLower(),
additionalHeaders.at(a).second));
}
m_deflateStream.total_in = uncompressedHeader.count();
m_deflateStream.avail_in = uncompressedHeader.count();
m_deflateStream.next_in = reinterpret_cast<unsigned char *>(uncompressedHeader.data());
int outputBytes = uncompressedHeader.count() + 30; // 30 bytes of compression header overhead
m_deflateStream.avail_out = outputBytes;
unsigned char *out = new unsigned char[outputBytes];
m_deflateStream.next_out = out;
int availOutBefore = m_deflateStream.avail_out;
int zlibRet = deflate(&m_deflateStream, Z_SYNC_FLUSH); // do everything in one go since we use no compression
int compressedHeaderSize = availOutBefore - m_deflateStream.avail_out;
Q_ASSERT(zlibRet == Z_OK); // otherwise, we need to allocate more outputBytes
Q_UNUSED(zlibRet); // silence -Wunused-variable
Q_ASSERT(m_deflateStream.avail_in == 0);
QByteArray compressedHeader(reinterpret_cast<char *>(out), compressedHeaderSize);
delete[] out;
return compressedHeader;
}
quint64 QSpdyProtocolHandler::bytesAvailable() const
{
Q_ASSERT(m_socket);
return m_spdyBuffer.byteAmount() + m_socket->bytesAvailable();
}
bool QSpdyProtocolHandler::readNextChunk(qint64 length, char *sink)
{
qint64 expectedReadBytes = length;
qint64 requiredBytesFromBuffer = 0;
if (m_waitingForCompleteStream) {
requiredBytesFromBuffer = qMin(length, m_spdyBuffer.byteAmount());
// ### if next chunk from buffer bigger than what we want to read,
// we have to call read() (which memcpy's). Otherwise, we can just
// read the next chunk without memcpy'ing.
qint64 bytesReadFromBuffer = m_spdyBuffer.read(sink, requiredBytesFromBuffer);
Q_ASSERT(bytesReadFromBuffer == requiredBytesFromBuffer);
if (length <= bytesReadFromBuffer) {
return true; // buffer > required size -> no need to read from socket
}
expectedReadBytes -= requiredBytesFromBuffer;
}
qint64 readBytes = m_socket->read(sink + requiredBytesFromBuffer, expectedReadBytes);
if (readBytes < expectedReadBytes) {
m_waitingForCompleteStream = true;
// ### this is inefficient, we should not put back so much data into the buffer
QByteArray temp(sink, requiredBytesFromBuffer + readBytes);
m_spdyBuffer.append(temp);
return false;
} else {
return true; // buffer must be cleared by calling function
}
}
void QSpdyProtocolHandler::sendControlFrame(FrameType type,
ControlFrameFlags flags,
const char *data,
quint32 length)
{
// frame type and stream ID
char header[8];
header[0] = 0x80u; // leftmost bit == 1 -> is a control frame
header[1] = 0x03; // 3 bit == version 3
header[2] = 0;
switch (type) {
case FrameType_CREDENTIAL: {
qWarning("sending SPDY CREDENTIAL frame is not yet implemented"); // QTBUG-36188
return;
}
default:
header[3] = type;
}
// flags
header[4] = 0;
if (flags & ControlFrame_FLAG_FIN || length == 0) {
Q_ASSERT(type == FrameType_SYN_STREAM || type == FrameType_SYN_REPLY
|| type == FrameType_HEADERS || length == 0);
header[4] |= ControlFrame_FLAG_FIN;
}
if (flags & ControlFrame_FLAG_UNIDIRECTIONAL) {
Q_ASSERT(type == FrameType_SYN_STREAM);
header[4] |= ControlFrame_FLAG_UNIDIRECTIONAL;
}
// length
appendIntToThreeBytes(header + 5, length);
qint64 written = m_socket->write(header, 8);
Q_ASSERT(written == 8);
written = m_socket->write(data, length);
Q_ASSERT(written == length);
Q_UNUSED(written); // silence -Wunused-variable
}
void QSpdyProtocolHandler::sendSYN_STREAM(const HttpMessagePair &messagePair,
qint32 streamID, qint32 associatedToStreamID)
{
QHttpNetworkRequest request = messagePair.first;
QHttpNetworkReply *reply = messagePair.second;
ControlFrameFlags flags;
if (!request.uploadByteDevice()) {
// no upload -> this is the last frame, send the FIN flag
flags |= ControlFrame_FLAG_FIN;
reply->d_func()->state = QHttpNetworkReplyPrivate::SPDYHalfClosed;
} else {
reply->d_func()->state = QHttpNetworkReplyPrivate::SPDYUploading;
// hack: set the stream ID on the device directly, so when we get
// the signal for uploading we know which stream we are sending on
m_streamIDs.insert(request.uploadByteDevice(), streamID);
QObject::connect(request.uploadByteDevice(), SIGNAL(readyRead()), this,
SLOT(_q_uploadDataReadyRead()), Qt::QueuedConnection);
QObject::connect(request.uploadByteDevice(), SIGNAL(destroyed(QObject*)), this,
SLOT(_q_uploadDataDestroyed(QObject *)));
}
QByteArray namesAndValues = composeHeader(request);
quint32 length = namesAndValues.count() + 10; // 10 == 4 for Stream-ID + 4 for Associated-To-Stream-ID
// + 2 for Priority, Unused and Slot
QByteArray wireData;
wireData.reserve(length);
wireData.append(intToFourBytes(streamID));
wireData.append(intToFourBytes(associatedToStreamID));
// priority (3 bits) / unused (5 bits) / slot (8 bits)
char prioAndSlot[2];
switch (request.priority()) {
case QHttpNetworkRequest::HighPriority:
prioAndSlot[0] = 0x00; // == prio 0 (highest)
break;
case QHttpNetworkRequest::NormalPriority:
prioAndSlot[0] = 0x80u; // == prio 4
break;
case QHttpNetworkRequest::LowPriority:
prioAndSlot[0] = 0xe0u; // == prio 7 (lowest)
break;
}
prioAndSlot[1] = 0x00; // slot in client certificates (not supported currently)
wireData.append(prioAndSlot, 2);
wireData.append(namesAndValues);
sendControlFrame(FrameType_SYN_STREAM, flags, wireData.constData(), length);
if (reply->d_func()->state == QHttpNetworkReplyPrivate::SPDYUploading)
uploadData(streamID);
}
void QSpdyProtocolHandler::_q_uploadDataDestroyed(QObject *uploadData)
{
m_streamIDs.remove(uploadData);
}
void QSpdyProtocolHandler::sendRST_STREAM(qint32 streamID, RST_STREAM_STATUS_CODE statusCode)
{
char wireData[8];
appendIntToFourBytes(wireData, streamID);
appendIntToFourBytes(wireData + 4, statusCode);
sendControlFrame(FrameType_RST_STREAM, /* flags = */ { }, wireData, /* length = */ 8);
}
void QSpdyProtocolHandler::sendPING(quint32 pingID)
{
char rawData[4];
appendIntToFourBytes(rawData, pingID);
sendControlFrame(FrameType_PING, /* flags = */ { }, rawData, /* length = */ 4);
}
bool QSpdyProtocolHandler::uploadData(qint32 streamID)
{
// we only rely on SPDY flow control here and don't care about TCP buffers
if (!m_inFlightStreams.contains(streamID)) {
sendRST_STREAM(streamID, RST_STREAM_INVALID_STREAM);
return false;
}
HttpMessagePair messagePair = m_inFlightStreams.value(streamID);
QHttpNetworkRequest request = messagePair.first;
QHttpNetworkReply *reply = messagePair.second;
Q_ASSERT(reply);
QHttpNetworkReplyPrivate *replyPrivate = reply->d_func();
Q_ASSERT(replyPrivate);
if (reply->d_func()->state == QHttpNetworkReplyPrivate::SPDYHalfClosed || reply->d_func()->state == QHttpNetworkReplyPrivate::SPDYClosed) {
qWarning("Trying to upload to closed stream");
return false;
}
qint32 dataLeftInWindow = replyPrivate->windowSizeUpload
- replyPrivate->currentlyUploadedDataInWindow;
while (dataLeftInWindow > 0 && !request.uploadByteDevice()->atEnd()) {
// get pointer to upload data
qint64 currentReadSize = 0;
const char *readPointer = request.uploadByteDevice()->readPointer(dataLeftInWindow,
currentReadSize);
if (currentReadSize == -1) {
// premature eof happened
m_connection->d_func()->emitReplyError(m_socket, reply,
QNetworkReply::UnknownNetworkError);
return false;
} else if (readPointer == nullptr || currentReadSize == 0) {
// nothing to read currently, break the loop
break;
} else {
DataFrameFlags flags;
// we will send the FIN flag later if appropriate
qint64 currentWriteSize = sendDataFrame(streamID, flags, currentReadSize, readPointer);
if (currentWriteSize == -1 || currentWriteSize != currentReadSize) {
// socket broke down
m_connection->d_func()->emitReplyError(m_socket, reply,
QNetworkReply::UnknownNetworkError);
return false;
} else {
replyPrivate->currentlyUploadedDataInWindow += currentWriteSize;
replyPrivate->totallyUploadedData += currentWriteSize;
dataLeftInWindow = replyPrivate->windowSizeUpload
- replyPrivate->currentlyUploadedDataInWindow;
request.uploadByteDevice()->advanceReadPointer(currentWriteSize);
emit reply->dataSendProgress(replyPrivate->totallyUploadedData,
request.contentLength());
}
}
}
if (replyPrivate->totallyUploadedData == request.contentLength()) {
DataFrameFlags finFlag = DataFrame_FLAG_FIN;
qint64 writeSize = sendDataFrame(streamID, finFlag, 0, nullptr);
Q_ASSERT(writeSize == 0);
Q_UNUSED(writeSize); // silence -Wunused-variable
replyPrivate->state = QHttpNetworkReplyPrivate::SPDYHalfClosed;
if (reply->request().uploadByteDevice())
reply->request().uploadByteDevice()->disconnect(this);
// ### this will not work if the content length is not known, but
// then again many servers will fail in this case anyhow according
// to the SPDY RFC
}
return true;
}
void QSpdyProtocolHandler::_q_uploadDataReadyRead()
{
QNonContiguousByteDevice *device = qobject_cast<QNonContiguousByteDevice *>(sender());
if (!device)
return;
qint32 streamID = m_streamIDs.value(device);
Q_ASSERT(streamID > 0);
uploadData(streamID);
}
void QSpdyProtocolHandler::sendWINDOW_UPDATE(qint32 streamID, quint32 deltaWindowSize)
{
char windowUpdateData[8];
appendIntToFourBytes(windowUpdateData, streamID);
appendIntToFourBytes(windowUpdateData + 4, deltaWindowSize);
sendControlFrame(FrameType_WINDOW_UPDATE, /* flags = */ { }, windowUpdateData, /* length = */ 8);
}
qint64 QSpdyProtocolHandler::sendDataFrame(qint32 streamID, DataFrameFlags flags,
quint32 length, const char *data)
{
QByteArray wireData;
wireData.reserve(8);
wireData.append(intToFourBytes(streamID));
wireData.append(flags);
wireData.append(intToThreeBytes(length));
Q_ASSERT(m_socket);
m_socket->write(wireData);
if (data) {
qint64 ret = m_socket->write(data, length);
return ret;
} else {
return 0; // nothing to write, e.g. FIN flag
}
}
void QSpdyProtocolHandler::handleControlFrame(const QByteArray &frameHeaders) // ### make it char *
{
Q_ASSERT(frameHeaders.count() >= 8);
qint16 version = twoBytesToInt(frameHeaders.constData());
version &= 0x3fff; // eliminate most significant bit to determine version
Q_ASSERT(version == 3);
qint16 type = twoBytesToInt(frameHeaders.constData() + 2);
char flags = frameHeaders.at(4);
qint32 length = threeBytesToInt(frameHeaders.constData() + 5);
Q_ASSERT(length > 0);
QByteArray frameData;
frameData.resize(length);
if (!readNextChunk(length, frameData.data())) {
// put back the frame headers to the buffer
m_spdyBuffer.prepend(frameHeaders);
return; // we couldn't read the whole frame and need to wait
} else {
m_spdyBuffer.clear();
m_waitingForCompleteStream = false;
}
switch (type) {
case FrameType_SYN_STREAM: {
handleSYN_STREAM(flags, length, frameData);
break;
}
case FrameType_SYN_REPLY: {
handleSYN_REPLY(flags, length, frameData);
break;
}
case FrameType_RST_STREAM: {
handleRST_STREAM(flags, length, frameData);
break;
}
case FrameType_SETTINGS: {
handleSETTINGS(flags, length, frameData);
break;
}
case FrameType_PING: {
handlePING(flags, length, frameData);
break;
}
case FrameType_GOAWAY: {
handleGOAWAY(flags, length, frameData);
break;
}
case FrameType_HEADERS: {
handleHEADERS(flags, length, frameData);
break;
}
case FrameType_WINDOW_UPDATE: {
handleWINDOW_UPDATE(flags, length, frameData);
break;
}
default:
qWarning("cannot handle frame of type %d", int(type));
}
}
void QSpdyProtocolHandler::handleSYN_STREAM(char /*flags*/, quint32 /*length*/,
const QByteArray &frameData)
{
// not implemented; will be implemented when servers start using it
// we just tell the server that we do not accept that
qint32 streamID = getStreamID(frameData.constData());
sendRST_STREAM(streamID, RST_STREAM_REFUSED_STREAM);
}
void QSpdyProtocolHandler::handleSYN_REPLY(char flags, quint32 /*length*/, const QByteArray &frameData)
{
parseHttpHeaders(flags, frameData);
}
void QSpdyProtocolHandler::parseHttpHeaders(char flags, const QByteArray &frameData)
{
qint32 streamID = getStreamID(frameData.constData());
const auto it = m_inFlightStreams.constFind(streamID);
if (it == m_inFlightStreams.cend()) {
sendRST_STREAM(streamID, RST_STREAM_INVALID_STREAM);
return;
}
flags &= 0x3f;
bool flag_fin = flags & 0x01;
QByteArray headerValuePairs = frameData.mid(4);
HttpMessagePair pair = it.value();
QHttpNetworkReply *httpReply = pair.second;
Q_ASSERT(httpReply != nullptr);
if (httpReply->d_func()->state == QHttpNetworkReplyPrivate::SPDYClosed) {
sendRST_STREAM(streamID, RST_STREAM_STREAM_ALREADY_CLOSED);
return;
}
QByteArray uncompressedHeader;
if (!uncompressHeader(headerValuePairs, &uncompressedHeader)) {
qWarning("error reading header from SYN_REPLY message");
return;
}
qint32 headerCount = fourBytesToInt(uncompressedHeader.constData());
if (headerCount * 8 > uncompressedHeader.size()) {
qWarning("error parsing header from SYN_REPLY message");
sendRST_STREAM(streamID, RST_STREAM_PROTOCOL_ERROR);
return;
}
qint32 readPointer = 4;
for (qint32 a = 0; a < headerCount; ++a) {
qint32 count = fourBytesToInt(uncompressedHeader.constData() + readPointer);
readPointer += 4;
QByteArray name = uncompressedHeader.mid(readPointer, count);
readPointer += count;
if (readPointer > uncompressedHeader.size()) {
qWarning("error parsing header from SYN_REPLY message");
sendRST_STREAM(streamID, RST_STREAM_PROTOCOL_ERROR);
return;
}
count = fourBytesToInt(uncompressedHeader.constData() + readPointer);
readPointer += 4;
QByteArray value = uncompressedHeader.mid(readPointer, count);
readPointer += count;
if (readPointer > uncompressedHeader.size()) {
qWarning("error parsing header from SYN_REPLY message");
sendRST_STREAM(streamID, RST_STREAM_PROTOCOL_ERROR);
return;
}
if (name == ":status") {
httpReply->setStatusCode(value.left(3).toInt());
httpReply->d_func()->reasonPhrase = QString::fromLatin1(value.mid(4));
} else if (name == ":version") {
int majorVersion = value.at(5) - 48;
int minorVersion = value.at(7) - 48;
httpReply->d_func()->majorVersion = majorVersion;
httpReply->d_func()->minorVersion = minorVersion;
} else if (name == "content-length") {
httpReply->setContentLength(value.toLongLong());
} else {
value.replace('\0', name == "set-cookie" ? "\n" : ", ");
httpReply->setHeaderField(name, value);
}
}
emit httpReply->headerChanged();
if (flag_fin) {
if (httpReply->d_func()->state != QHttpNetworkReplyPrivate::SPDYHalfClosed)
sendDataFrame(streamID, DataFrame_FLAG_FIN, 0, nullptr);
replyFinished(httpReply, streamID);
}
}
void QSpdyProtocolHandler::handleRST_STREAM(char /*flags*/, quint32 length,
const QByteArray &frameData)
{
// flags are ignored
Q_ASSERT(length == 8);
Q_UNUSED(length); // silence -Wunused-parameter
qint32 streamID = getStreamID(frameData.constData());
QHttpNetworkReply *httpReply = m_inFlightStreams.value(streamID).second;
qint32 statusCodeInt = fourBytesToInt(frameData.constData() + 4);
RST_STREAM_STATUS_CODE statusCode = static_cast<RST_STREAM_STATUS_CODE>(statusCodeInt);
QNetworkReply::NetworkError errorCode;
QByteArray errorMessage;
switch (statusCode) {
case RST_STREAM_PROTOCOL_ERROR:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "SPDY protocol error";
break;
case RST_STREAM_INVALID_STREAM:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "SPDY stream is not active";
break;
case RST_STREAM_REFUSED_STREAM:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "SPDY stream was refused";
break;
case RST_STREAM_UNSUPPORTED_VERSION:
errorCode = QNetworkReply::ProtocolUnknownError;
errorMessage = "SPDY version is unknown to the server";
break;
case RST_STREAM_CANCEL:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "SPDY stream is no longer needed";
break;
case RST_STREAM_INTERNAL_ERROR:
errorCode = QNetworkReply::InternalServerError;
errorMessage = "Internal server error";
break;
case RST_STREAM_FLOW_CONTROL_ERROR:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "peer violated the flow control protocol";
break;
case RST_STREAM_STREAM_IN_USE:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "server received a SYN_REPLY for an already open stream";
break;
case RST_STREAM_STREAM_ALREADY_CLOSED:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "server received data or a SYN_REPLY for an already half-closed stream";
break;
case RST_STREAM_INVALID_CREDENTIALS:
errorCode = QNetworkReply::ContentAccessDenied;
errorMessage = "server received invalid credentials";
break;
case RST_STREAM_FRAME_TOO_LARGE:
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "server cannot process the frame because it is too large";
break;
default:
qWarning("could not understand servers RST_STREAM status code");
errorCode = QNetworkReply::ProtocolFailure;
errorMessage = "got SPDY RST_STREAM message with unknown error code";
}
if (httpReply)
replyFinishedWithError(httpReply, streamID, errorCode, errorMessage.constData());
}
void QSpdyProtocolHandler::handleSETTINGS(char flags, quint32 /*length*/, const QByteArray &frameData)
{
Q_ASSERT(frameData.count() > 0);
SETTINGS_Flags settingsFlags = static_cast<SETTINGS_Flags>(flags);
if (settingsFlags & FLAG_SETTINGS_CLEAR_SETTINGS) {
// ### clear all persistent settings; since we do not persist settings
// as of now, we don't need to clear anything either
}
qint32 numberOfEntries = fourBytesToInt(frameData.constData());
Q_ASSERT(numberOfEntries > 0);
for (int a = 0, frameDataIndex = 4; a < numberOfEntries; ++a, frameDataIndex += 8) {
SETTINGS_ID_Flag idFlag = static_cast<SETTINGS_ID_Flag>(frameData[frameDataIndex]);
if (idFlag & FLAG_SETTINGS_PERSIST_VALUE) {
// ### we SHOULD persist the settings here according to the RFC, but we don't have to,
// so implement that later
} // the other value is only sent by us, but not received
quint32 uniqueID = static_cast<SETTINGS_ID>(
threeBytesToInt(frameData.constData() + frameDataIndex + 1));
quint32 value = fourBytesToInt(frameData.constData() + frameDataIndex + 4);
switch (uniqueID) {
case SETTINGS_UPLOAD_BANDWIDTH: {
// ignored for now, just an estimated informative value
break;
}
case SETTINGS_DOWNLOAD_BANDWIDTH: {
// ignored for now, just an estimated informative value
break;
}
case SETTINGS_ROUND_TRIP_TIME: {
// ignored for now, just an estimated informative value
break;
}
case SETTINGS_MAX_CONCURRENT_STREAMS: {
m_maxConcurrentStreams = value;
break;
}
case SETTINGS_CURRENT_CWND: {
// ignored for now, just an informative value
break;
}
case SETTINGS_DOWNLOAD_RETRANS_RATE: {
// ignored for now, just an estimated informative value
break;
}
case SETTINGS_INITIAL_WINDOW_SIZE: {
m_initialWindowSize = value;
break;
}
case SETTINGS_CLIENT_CERTIFICATE_VECTOR_SIZE: {
// client certificates are not supported
break;
}
default:
qWarning("found unknown settings value %u", uint(value));
}
}
}
void QSpdyProtocolHandler::handlePING(char /*flags*/, quint32 length, const QByteArray &frameData)
{
// flags are ignored
Q_ASSERT(length == 4);
Q_UNUSED(length); // silence -Wunused-parameter
quint32 pingID = fourBytesToInt(frameData.constData());
// odd numbered IDs must be ignored
if ((pingID & 1) == 0) // is even?
sendPING(pingID);
}
void QSpdyProtocolHandler::handleGOAWAY(char /*flags*/, quint32 /*length*/,
const QByteArray &frameData)
{
// flags are ignored
qint32 statusCode = static_cast<GOAWAY_STATUS>(fourBytesToInt(frameData.constData() + 4));
QNetworkReply::NetworkError errorCode;
switch (statusCode) {
case GOAWAY_OK: {
errorCode = QNetworkReply::NoError;
break;
}
case GOAWAY_PROTOCOL_ERROR: {
errorCode = QNetworkReply::ProtocolFailure;
break;
}
case GOAWAY_INTERNAL_ERROR: {
errorCode = QNetworkReply::InternalServerError;
break;
}
default:
qWarning("unexpected status code %d", int(statusCode));
errorCode = QNetworkReply::ProtocolUnknownError;
}
qint32 lastGoodStreamID = getStreamID(frameData.constData());
// emit errors for all replies after the last good stream ID
Q_ASSERT(m_connection);
for (qint32 currentStreamID = lastGoodStreamID + 2; currentStreamID <= m_nextStreamID;
++currentStreamID) {
QHttpNetworkReply *reply = m_inFlightStreams.value(currentStreamID).second;
Q_ASSERT(reply);
m_connection->d_func()->emitReplyError(m_socket, reply, errorCode);
}
// ### we could make sure a new session is initiated anyhow
}
void QSpdyProtocolHandler::handleHEADERS(char flags, quint32 /*length*/,
const QByteArray &frameData)
{
parseHttpHeaders(flags, frameData);
}
void QSpdyProtocolHandler::handleWINDOW_UPDATE(char /*flags*/, quint32 /*length*/,
const QByteArray &frameData)
{
qint32 streamID = getStreamID(frameData.constData());
qint32 deltaWindowSize = fourBytesToInt(frameData.constData() + 4);
const auto it = m_inFlightStreams.constFind(streamID);
if (it == m_inFlightStreams.cend()) {
sendRST_STREAM(streamID, RST_STREAM_INVALID_STREAM);
return;
}
QHttpNetworkReply *reply = it.value().second;
Q_ASSERT(reply);
QHttpNetworkReplyPrivate *replyPrivate = reply->d_func();
Q_ASSERT(replyPrivate);
// Ignore WINDOW_UPDATE if we are already done.
if (replyPrivate->state == QHttpNetworkReplyPrivate::SPDYHalfClosed || replyPrivate->state == QHttpNetworkReplyPrivate::SPDYClosed)
return;
replyPrivate->currentlyUploadedDataInWindow = replyPrivate->windowSizeUpload - deltaWindowSize;
uploadData(streamID); // we hopefully can continue to upload
}
void QSpdyProtocolHandler::handleDataFrame(const QByteArray &frameHeaders)
{
Q_ASSERT(frameHeaders.count() >= 8);
qint32 streamID = getStreamID(frameHeaders.constData());
const auto it = m_inFlightStreams.constFind(streamID);
if (it == m_inFlightStreams.cend()) {
sendRST_STREAM(streamID, RST_STREAM_INVALID_STREAM);
return;
}
unsigned char flags = static_cast<unsigned char>(frameHeaders.at(4));
flags &= 0x3f;
bool flag_fin = flags & 0x01;
bool flag_compress = flags & 0x02;
qint32 length = threeBytesToInt(frameHeaders.constData() + 5);
QByteArray data;
data.resize(length);
if (!readNextChunk(length, data.data())) {
// put back the frame headers to the buffer
m_spdyBuffer.prepend(frameHeaders);
return; // we couldn't read the whole frame and need to wait
} else {
m_spdyBuffer.clear();
m_waitingForCompleteStream = false;
}
HttpMessagePair pair = it.value();
QHttpNetworkRequest httpRequest = pair.first;
QHttpNetworkReply *httpReply = pair.second;
Q_ASSERT(httpReply != nullptr);
QHttpNetworkReplyPrivate *replyPrivate = httpReply->d_func();
if (replyPrivate->state == QHttpNetworkReplyPrivate::SPDYClosed) {
sendRST_STREAM(streamID, RST_STREAM_STREAM_ALREADY_CLOSED);
return;
}
// check whether we need to send WINDOW_UPDATE (i.e. tell the sender it can send more)
replyPrivate->currentlyReceivedDataInWindow += length;
qint32 dataLeftInWindow = replyPrivate->windowSizeDownload - replyPrivate->currentlyReceivedDataInWindow;
if (replyPrivate->currentlyReceivedDataInWindow > 0
&& dataLeftInWindow < replyPrivate->windowSizeDownload / 2) {
// socket read buffer size is 64K actually, hard coded in the channel
// We can read way more than 64K per socket, because the window size
// here is per stream.
if (replyPrivate->windowSizeDownload >= m_socket->readBufferSize()) {
replyPrivate->windowSizeDownload = m_socket->readBufferSize();
} else {
replyPrivate->windowSizeDownload *= 1.5;
}
QMetaObject::invokeMethod(this, "sendWINDOW_UPDATE", Qt::QueuedConnection,
Q_ARG(qint32, streamID),
Q_ARG(quint32, replyPrivate->windowSizeDownload));
// setting the current data count to 0 is a race condition,
// because we call sendWINDOW_UPDATE through the event loop.
// But then again, the whole situation is a race condition because
// we don't know when the packet will arrive at the server; so
// this is most likely good enough here.
replyPrivate->currentlyReceivedDataInWindow = 0;
}
httpReply->d_func()->compressedData.append(data);
replyPrivate->totalProgress += length;
if (httpRequest.d->autoDecompress && httpReply->d_func()->isCompressed()) {
QByteDataBuffer inDataBuffer; // ### should we introduce one in the http reply?
inDataBuffer.append(data);
qint64 compressedCount = httpReply->d_func()->uncompressBodyData(&inDataBuffer,
&replyPrivate->responseData);
Q_ASSERT(compressedCount >= 0);
Q_UNUSED(compressedCount); // silence -Wunused-variable
} else {
replyPrivate->responseData.append(data);
}
if (replyPrivate->shouldEmitSignals()) {
emit httpReply->readyRead();
emit httpReply->dataReadProgress(replyPrivate->totalProgress, replyPrivate->bodyLength);
}
if (flag_compress) {
qWarning("SPDY level compression is not supported");
}
if (flag_fin) {
if (httpReply->d_func()->state != QHttpNetworkReplyPrivate::SPDYHalfClosed)
sendDataFrame(streamID, DataFrame_FLAG_FIN, 0, nullptr);
replyFinished(httpReply, streamID);
}
}
void QSpdyProtocolHandler::replyFinished(QHttpNetworkReply *httpReply, qint32 streamID)
{
httpReply->d_func()->state = QHttpNetworkReplyPrivate::SPDYClosed;
httpReply->disconnect(this);
if (httpReply->request().uploadByteDevice())
httpReply->request().uploadByteDevice()->disconnect(this);
int streamsRemoved = m_inFlightStreams.remove(streamID);
Q_ASSERT(streamsRemoved == 1);
Q_UNUSED(streamsRemoved); // silence -Wunused-variable
emit httpReply->finished();
}
void QSpdyProtocolHandler::replyFinishedWithError(QHttpNetworkReply *httpReply, qint32 streamID,
QNetworkReply::NetworkError errorCode, const char *errorMessage)
{
Q_ASSERT(httpReply);
httpReply->d_func()->state = QHttpNetworkReplyPrivate::SPDYClosed;
httpReply->disconnect(this);
if (httpReply->request().uploadByteDevice())
httpReply->request().uploadByteDevice()->disconnect(this);
int streamsRemoved = m_inFlightStreams.remove(streamID);
Q_ASSERT(streamsRemoved == 1);
Q_UNUSED(streamsRemoved); // silence -Wunused-variable
emit httpReply->finishedWithError(errorCode, QSpdyProtocolHandler::tr(errorMessage));
}
qint32 QSpdyProtocolHandler::generateNextStreamID()
{
// stream IDs initiated by the client must be odd
m_nextStreamID += 2;
return m_nextStreamID;
}
QT_END_NAMESPACE
#endif // !defined(QT_NO_SSL)
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