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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "net/http2/http2_constants.h" | |
6 | |
7 #include <ios> | |
8 #include <sstream> | |
9 | |
10 #include "base/logging.h" | |
11 #include "base/strings/string_piece.h" | |
12 #include "base/strings/stringprintf.h" | |
13 | |
14 using base::StringPrintf; | |
15 using std::string; | |
16 | |
17 namespace net { | |
18 | |
19 string Http2FrameTypeToString(Http2FrameType v) { | |
20 switch (v) { | |
21 case Http2FrameType::DATA: | |
22 return "DATA"; | |
23 case Http2FrameType::HEADERS: | |
24 return "HEADERS"; | |
25 case Http2FrameType::PRIORITY: | |
26 return "PRIORITY"; | |
27 case Http2FrameType::RST_STREAM: | |
28 return "RST_STREAM"; | |
29 case Http2FrameType::SETTINGS: | |
30 return "SETTINGS"; | |
31 case Http2FrameType::PUSH_PROMISE: | |
32 return "PUSH_PROMISE"; | |
33 case Http2FrameType::PING: | |
34 return "PING"; | |
35 case Http2FrameType::GOAWAY: | |
36 return "GOAWAY"; | |
37 case Http2FrameType::WINDOW_UPDATE: | |
38 return "WINDOW_UPDATE"; | |
39 case Http2FrameType::CONTINUATION: | |
40 return "CONTINUATION"; | |
41 case Http2FrameType::ALTSVC: | |
42 return "ALTSVC"; | |
43 } | |
44 std::stringstream ss; | |
45 ss << "UnknownFrameType(" << static_cast<int>(v) << ")"; | |
46 return ss.str(); | |
47 } | |
48 string Http2FrameTypeToString(uint8_t v) { | |
49 return Http2FrameTypeToString(static_cast<Http2FrameType>(v)); | |
50 } | |
51 | |
52 string Http2FrameFlagsToString(Http2FrameType type, uint8_t flags) { | |
53 string s; | |
54 // Closure to append flag name |v| to the string |s|, and to clear | |
55 // |bit| from |flags|. | |
56 auto append_and_clear = [&s, &flags](base::StringPiece v, uint8_t bit) { | |
57 if (!s.empty()) { | |
58 s.push_back('|'); | |
59 } | |
60 v.AppendToString(&s); | |
61 flags ^= bit; | |
62 }; | |
63 if (flags & 0x01) { | |
64 if (type == Http2FrameType::DATA || type == Http2FrameType::HEADERS) { | |
65 append_and_clear("END_STREAM", Http2FrameFlag::FLAG_END_STREAM); | |
66 } else if (type == Http2FrameType::SETTINGS || | |
67 type == Http2FrameType::PING) { | |
68 append_and_clear("ACK", Http2FrameFlag::FLAG_ACK); | |
69 } | |
70 } | |
71 if (flags & 0x04) { | |
72 if (type == Http2FrameType::HEADERS || | |
73 type == Http2FrameType::PUSH_PROMISE || | |
74 type == Http2FrameType::CONTINUATION) { | |
75 append_and_clear("END_HEADERS", Http2FrameFlag::FLAG_END_HEADERS); | |
76 } | |
77 } | |
78 if (flags & 0x08) { | |
79 if (type == Http2FrameType::DATA || type == Http2FrameType::HEADERS || | |
80 type == Http2FrameType::PUSH_PROMISE) { | |
81 append_and_clear("PADDED", Http2FrameFlag::FLAG_PADDED); | |
82 } | |
83 } | |
84 if (flags & 0x20) { | |
85 if (type == Http2FrameType::HEADERS) { | |
86 append_and_clear("PRIORITY", Http2FrameFlag::FLAG_PRIORITY); | |
87 } | |
88 } | |
89 if (flags != 0) { | |
90 append_and_clear(StringPrintf("0x%02x", flags), flags); | |
91 } | |
92 DCHECK_EQ(0, flags); | |
93 return s; | |
94 } | |
95 string Http2FrameFlagsToString(uint8_t type, uint8_t flags) { | |
96 return Http2FrameFlagsToString(static_cast<Http2FrameType>(type), flags); | |
97 } | |
98 | |
99 string Http2ErrorCodeToString(uint32_t v) { | |
100 switch (v) { | |
101 case 0x0: | |
102 return "NO_ERROR"; | |
103 case 0x1: | |
104 return "PROTOCOL_ERROR"; | |
105 case 0x2: | |
106 return "INTERNAL_ERROR"; | |
107 case 0x3: | |
108 return "FLOW_CONTROL_ERROR"; | |
109 case 0x4: | |
110 return "SETTINGS_TIMEOUT"; | |
111 case 0x5: | |
112 return "STREAM_CLOSED"; | |
113 case 0x6: | |
114 return "FRAME_SIZE_ERROR"; | |
115 case 0x7: | |
116 return "REFUSED_STREAM"; | |
117 case 0x8: | |
118 return "CANCEL"; | |
119 case 0x9: | |
120 return "COMPRESSION_ERROR"; | |
121 case 0xa: | |
122 return "CONNECT_ERROR"; | |
123 case 0xb: | |
124 return "ENHANCE_YOUR_CALM"; | |
125 case 0xc: | |
126 return "INADEQUATE_SECURITY"; | |
127 case 0xd: | |
128 return "HTTP_1_1_REQUIRED"; | |
129 } | |
130 std::stringstream ss; | |
131 ss << "UnknownErrorCode(0x" << std::hex << v << ")"; | |
132 return ss.str(); | |
133 } | |
134 string Http2ErrorCodeToString(Http2ErrorCode v) { | |
135 return Http2ErrorCodeToString(static_cast<uint32_t>(v)); | |
136 } | |
137 | |
138 string Http2SettingsParameterToString(uint32_t v) { | |
139 switch (v) { | |
140 case 0x1: | |
141 return "HEADER_TABLE_SIZE"; | |
142 case 0x2: | |
143 return "ENABLE_PUSH"; | |
144 case 0x3: | |
145 return "MAX_CONCURRENT_STREAMS"; | |
146 case 0x4: | |
147 return "INITIAL_WINDOW_SIZE"; | |
148 case 0x5: | |
149 return "MAX_FRAME_SIZE"; | |
150 case 0x6: | |
151 return "MAX_HEADER_LIST_SIZE"; | |
152 } | |
153 std::stringstream ss; | |
154 ss << "UnknownSettingsParameter(0x" << std::hex << v << ")"; | |
155 return ss.str(); | |
156 } | |
157 string Http2SettingsParameterToString(Http2SettingsParameter v) { | |
158 return Http2SettingsParameterToString(static_cast<uint32_t>(v)); | |
159 } | |
160 | |
161 } // namespace net | |
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