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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ | 5 #ifndef NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ |
6 #define NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ | 6 #define NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ |
7 | 7 |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
8 #include <string> | 11 #include <string> |
9 | 12 |
10 #include "net/base/net_export.h" | 13 #include "net/base/net_export.h" |
11 #include "net/quic/quic_protocol.h" | 14 #include "net/quic/quic_protocol.h" |
12 | 15 |
13 // Version and Crypto tags are written to the wire with a big-endian | 16 // Version and Crypto tags are written to the wire with a big-endian |
14 // representation of the name of the tag. For example | 17 // representation of the name of the tag. For example |
15 // the client hello tag (CHLO) will be written as the | 18 // the client hello tag (CHLO) will be written as the |
16 // following 4 bytes: 'C' 'H' 'L' 'O'. Since it is | 19 // following 4 bytes: 'C' 'H' 'L' 'O'. Since it is |
17 // stored in memory as a little endian uint32, we need | 20 // stored in memory as a little endian uint32_t, we need |
18 // to reverse the order of the bytes. | 21 // to reverse the order of the bytes. |
19 // | 22 // |
20 // We use a macro to ensure that no static initialisers are created. Use the | 23 // We use a macro to ensure that no static initialisers are created. Use the |
21 // MakeQuicTag function in normal code. | 24 // MakeQuicTag function in normal code. |
22 #define TAG(a, b, c, d) \ | 25 #define TAG(a, b, c, d) \ |
23 static_cast<QuicTag>((d << 24) + (c << 16) + (b << 8) + a) | 26 static_cast<QuicTag>((d << 24) + (c << 16) + (b << 8) + a) |
24 | 27 |
25 namespace net { | 28 namespace net { |
26 | 29 |
27 typedef std::string ServerConfigID; | 30 typedef std::string ServerConfigID; |
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212 // amplification factor of any mirror DoS attack. | 215 // amplification factor of any mirror DoS attack. |
213 // | 216 // |
214 // A client may pad an inchoate client hello to a size larger than | 217 // A client may pad an inchoate client hello to a size larger than |
215 // kClientHelloMinimumSize to make it more likely to receive a complete | 218 // kClientHelloMinimumSize to make it more likely to receive a complete |
216 // rejection message. | 219 // rejection message. |
217 const size_t kClientHelloMinimumSize = 1024; | 220 const size_t kClientHelloMinimumSize = 1024; |
218 | 221 |
219 } // namespace net | 222 } // namespace net |
220 | 223 |
221 #endif // NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ | 224 #endif // NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_ |
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