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| 1 // Copyright (c) 2013 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 #ifndef NET_QUIC_QUIC_SPDY_COMPRESSOR_H_ | |
| 6 #define NET_QUIC_QUIC_SPDY_COMPRESSOR_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "net/base/net_export.h" | |
| 11 #include "net/quic/quic_protocol.h" | |
| 12 #include "net/spdy/spdy_framer.h" | |
| 13 | |
| 14 namespace net { | |
| 15 | |
| 16 // Handles the compression of request/response headers blocks. The | |
| 17 // serialized format is: | |
| 18 // uint32 - Priority | |
| 19 // uint32 - Header ID | |
| 20 // uint32 - Compressed header length | |
| 21 // ... - Compressed data | |
| 22 // | |
| 23 class NET_EXPORT_PRIVATE QuicSpdyCompressor { | |
| 24 public: | |
| 25 QuicSpdyCompressor(); | |
| 26 ~QuicSpdyCompressor(); | |
| 27 | |
| 28 // Returns a string comprised of [header_sequence_id, compressed_headers]. | |
| 29 std::string CompressHeaders(const SpdyHeaderBlock& headers); | |
| 30 | |
| 31 // Returns a string comprised of | |
| 32 // [priority, header_sequence_id, compressed_headers] | |
| 33 std::string CompressHeadersWithPriority(QuicPriority priority, | |
| 34 const SpdyHeaderBlock& headers); | |
| 35 | |
| 36 private: | |
| 37 std::string CompressHeadersInternal(QuicPriority priority, | |
| 38 const SpdyHeaderBlock& headers, | |
| 39 bool write_priority); | |
| 40 | |
| 41 SpdyFramer spdy_framer_; | |
| 42 QuicHeaderId header_sequence_id_; | |
| 43 | |
| 44 DISALLOW_COPY_AND_ASSIGN(QuicSpdyCompressor); | |
| 45 }; | |
| 46 | |
| 47 } // namespace net | |
| 48 | |
| 49 #endif // NET_QUIC_QUIC_SPDY_COMPRESSOR_H_ | |
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