1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef HTTP2SRV_H
#define HTTP2SRV_H
#include <QtNetwork/private/qhttpnetworkrequest_p.h>
#include <QtNetwork/private/qhttpnetworkreply_p.h>
#include <QtNetwork/private/http2protocol_p.h>
#include <QtNetwork/private/http2frames_p.h>
#include <QtNetwork/private/hpack_p.h>
#include <QtNetwork/qabstractsocket.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qscopedpointer.h>
#include <QtNetwork/qtcpserver.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qatomic.h>
#include <QtCore/qglobal.h>
#include <QtCore/qmap.h>
#include <vector>
#include <map>
#include <set>
QT_BEGIN_NAMESPACE
// At the moment we do not have any public API parsing HTTP headers. Even worse -
// the code that can do this exists only in QHttpNetworkReplyPrivate class.
// To be able to access reply's d_func() we have these classes:
class Http11ReplyPrivate : public QHttpNetworkReplyPrivate
{
};
class Http11Reply : public QHttpNetworkReply
{
public:
Q_DECLARE_PRIVATE(Http11Reply)
};
enum class H2Type {
h2Alpn, // Secure connection, ALPN to negotiate h2.
h2c, // Clear text with protocol upgrade.
h2Direct, // Secure connection, ALPN not supported.
h2cDirect, // Clear text direct
};
using RawSettings = QMap<Http2::Settings, quint32>;
class Http2Server : public QTcpServer
{
Q_OBJECT
public:
Http2Server(H2Type type, const RawSettings &serverSettings,
const RawSettings &clientSettings);
~Http2Server();
// To be called before server started:
void enablePushPromise(bool enabled, const QByteArray &path = QByteArray());
void setResponseBody(const QByteArray &body);
// No content encoding is actually performed, call setResponseBody with already encoded data
void setContentEncoding(const QByteArray &contentEncoding);
// No authentication data is generated for the method, the full header value must be set
void setAuthenticationHeader(const QByteArray &authentication);
void emulateGOAWAY(int timeout);
void redirectOpenStream(quint16 targetPort);
bool isClearText() const;
QByteArray requestAuthorizationHeader();
// Invokables, since we can call them from the main thread,
// but server (can) work on its own thread.
Q_INVOKABLE void startServer();
bool sendProtocolSwitchReply();
Q_INVOKABLE void sendServerSettings();
Q_INVOKABLE void sendGOAWAY(quint32 streamID, quint32 error,
quint32 lastStreamID);
Q_INVOKABLE void sendRST_STREAM(quint32 streamID, quint32 error);
Q_INVOKABLE void sendDATA(quint32 streamID, quint32 windowSize);
Q_INVOKABLE void sendWINDOW_UPDATE(quint32 streamID, quint32 delta);
Q_INVOKABLE void handleProtocolUpgrade();
Q_INVOKABLE void handleConnectionPreface();
Q_INVOKABLE void handleIncomingFrame();
Q_INVOKABLE void handleSETTINGS();
Q_INVOKABLE void handleDATA();
Q_INVOKABLE void handleWINDOW_UPDATE();
Q_INVOKABLE void sendResponse(quint32 streamID, bool emptyBody);
void stopSendingDATAFrames();
private:
void processRequest();
Q_SIGNALS:
void serverStarted(quint16 port);
// Error/success notifications:
void clientPrefaceOK();
void clientPrefaceError();
void serverSettingsAcked();
void invalidFrame();
void invalidRequest(quint32 streamID);
void decompressionFailed(quint32 streamID);
void receivedRequest(quint32 streamID);
void receivedData(quint32 streamID);
// Emitted for every DATA frame. Includes the content of the frame as \a body.
void receivedDATAFrame(quint32 streamID, const QByteArray &body);
void windowUpdate(quint32 streamID);
void sendingData();
private slots:
void connectionEstablished();
void readReady();
private:
void incomingConnection(qintptr socketDescriptor) override;
quint32 clientSetting(Http2::Settings identifier, quint32 defaultValue);
bool readMethodLine();
bool verifyProtocolUpgradeRequest();
void triggerGOAWAYEmulation();
QScopedPointer<QAbstractSocket> socket;
H2Type connectionType = H2Type::h2Alpn;
// Connection preface:
bool waitingClientPreface = false;
bool waitingClientSettings = false;
bool settingsSent = false;
bool waitingClientAck = false;
RawSettings serverSettings;
RawSettings expectedClientSettings;
bool connectionError = false;
Http2::FrameReader reader;
Http2::Frame inboundFrame;
Http2::FrameWriter writer;
using FrameSequence = std::vector<Http2::Frame>;
FrameSequence continuedRequest;
std::map<quint32, quint32> streamWindows;
HPack::Decoder decoder{HPack::FieldLookupTable::DefaultSize};
HPack::Encoder encoder{HPack::FieldLookupTable::DefaultSize, true};
using Http2Requests = std::map<quint32, HPack::HttpHeader>;
Http2Requests activeRequests;
// 'remote half-closed' streams to keep
// track of streams with END_STREAM set:
std::set<quint32> closedStreams;
// streamID + offset in response body to send.
std::map<quint32, quint32> suspendedStreams;
// We potentially reset this once (see sendServerSettings)
// and do not change later:
quint32 sessionRecvWindowSize = Http2::defaultSessionWindowSize;
// This changes in the range [0, sessionRecvWindowSize]
// while handling DATA frames:
quint32 sessionCurrRecvWindow = sessionRecvWindowSize;
// This we potentially update only once (sendServerSettings).
quint32 streamRecvWindowSize = Http2::defaultSessionWindowSize;
QByteArray responseBody;
bool pushPromiseEnabled = false;
quint32 lastPromisedStream = 0;
QByteArray pushPath;
bool testingGOAWAY = false;
int goawayTimeout = 0;
// Clear text HTTP/2, we have to deal with the protocol upgrade request
// from the initial HTTP/1.1 request.
bool upgradeProtocol = false;
QByteArray requestLine;
QHttpNetworkRequest::Operation requestType;
// We need QHttpNetworkReply (actually its private d-object) to handle the
// first HTTP/1.1 request. QHttpNetworkReplyPrivate does parsing + in case
// of POST it is also reading the body for us.
QScopedPointer<Http11Reply> protocolUpgradeHandler;
// We need it for PUSH_PROMISE, with the correct port number appended,
// when replying to essentially 1.1 request.
QByteArray authority;
// Redirect, with status code 308, as soon as we've seen headers, while client
// may still be sending DATA frames. See tst_Http2::earlyResponse().
bool redirectWhileReading = false;
bool redirectSent = false;
quint16 targetPort = 0;
QAtomicInt interrupted;
QByteArray contentEncoding;
QByteArray authenticationHeader;
protected slots:
void ignoreErrorSlot();
};
QT_END_NAMESPACE
#endif
|
