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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_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ | 5 #ifndef NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
6 #define NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ | 6 #define NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <cstddef> |
9 #include <stdint.h> | |
10 | |
11 #include <string> | 9 #include <string> |
12 | 10 |
13 #include "net/quic/core/quic_tag.h" | 11 #include "net/quic/core/quic_tag.h" |
14 | 12 |
15 // Version and Crypto tags are written to the wire with a big-endian | 13 // Version and Crypto tags are written to the wire with a big-endian |
16 // representation of the name of the tag. For example | 14 // representation of the name of the tag. For example |
17 // the client hello tag (CHLO) will be written as the | 15 // the client hello tag (CHLO) will be written as the |
18 // following 4 bytes: 'C' 'H' 'L' 'O'. Since it is | 16 // following 4 bytes: 'C' 'H' 'L' 'O'. Since it is |
19 // stored in memory as a little endian uint32_t, we need | 17 // stored in memory as a little endian uint32_t, we need |
20 // to reverse the order of the bytes. | 18 // to reverse the order of the bytes. |
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267 // amplification factor of any mirror DoS attack. | 265 // amplification factor of any mirror DoS attack. |
268 // | 266 // |
269 // A client may pad an inchoate client hello to a size larger than | 267 // A client may pad an inchoate client hello to a size larger than |
270 // kClientHelloMinimumSize to make it more likely to receive a complete | 268 // kClientHelloMinimumSize to make it more likely to receive a complete |
271 // rejection message. | 269 // rejection message. |
272 const size_t kClientHelloMinimumSize = 1024; | 270 const size_t kClientHelloMinimumSize = 1024; |
273 | 271 |
274 } // namespace net | 272 } // namespace net |
275 | 273 |
276 #endif // NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ | 274 #endif // NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_ |
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