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Side by Side Diff: net/spdy/hpack_encoder.h

Issue 485833002: HTTP2 draft 14 support (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Add ignore_result(). Created 6 years, 4 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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_SPDY_HPACK_ENCODER_H_ 5 #ifndef NET_SPDY_HPACK_ENCODER_H_
6 #define NET_SPDY_HPACK_ENCODER_H_ 6 #define NET_SPDY_HPACK_ENCODER_H_
7 7
8 #include <map> 8 #include <map>
9 #include <string> 9 #include <string>
10 #include <vector> 10 #include <vector>
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59 // Sets externally-owned storage for aggregating character counts of emitted 59 // Sets externally-owned storage for aggregating character counts of emitted
60 // literal representations. 60 // literal representations.
61 void SetCharCountsStorage(std::vector<size_t>* char_counts, 61 void SetCharCountsStorage(std::vector<size_t>* char_counts,
62 size_t* total_char_counts); 62 size_t* total_char_counts);
63 63
64 private: 64 private:
65 typedef std::pair<base::StringPiece, base::StringPiece> Representation; 65 typedef std::pair<base::StringPiece, base::StringPiece> Representation;
66 typedef std::vector<Representation> Representations; 66 typedef std::vector<Representation> Representations;
67 67
68 // Emits a static/dynamic indexed representation (Section 7.1). 68 // Emits a static/dynamic indexed representation (Section 7.1).
69 void EmitDynamicIndex(HpackEntry* entry); 69 void EmitIndex(HpackEntry* entry);
70 void EmitStaticIndex(HpackEntry* entry);
71 70
72 // Emits a literal representation (Section 7.2). 71 // Emits a literal representation (Section 7.2).
73 void EmitIndexedLiteral(const Representation& representation); 72 void EmitIndexedLiteral(const Representation& representation);
74 void EmitNonIndexedLiteral(const Representation& representation); 73 void EmitNonIndexedLiteral(const Representation& representation);
75 void EmitLiteral(const Representation& representation); 74 void EmitLiteral(const Representation& representation);
76 75
77 // Emits a Huffman or identity string (whichever is smaller). 76 // Emits a Huffman or identity string (whichever is smaller).
78 void EmitString(base::StringPiece str); 77 void EmitString(base::StringPiece str);
79 78
80 void UpdateCharacterCounts(base::StringPiece str); 79 void UpdateCharacterCounts(base::StringPiece str);
81 80
82 // Determines the representation delta required to encode |header_set| in
83 // the current header table context. Entries in the reference set are
84 // enumerated and marked with membership in the current |header_set|.
85 // Representations which must be explicitly emitted are returned.
86 Representations DetermineEncodingDelta(
87 const std::map<std::string, std::string>& header_set);
88
89 // Crumbles a cookie header into sorted, de-duplicated crumbs. 81 // Crumbles a cookie header into sorted, de-duplicated crumbs.
90 static void CookieToCrumbs(const Representation& cookie, 82 static void CookieToCrumbs(const Representation& cookie,
91 Representations* crumbs_out); 83 Representations* crumbs_out);
92 84
93 HpackHeaderTable header_table_; 85 HpackHeaderTable header_table_;
94 HpackOutputStream output_stream_; 86 HpackOutputStream output_stream_;
95 87
96 bool allow_huffman_compression_; 88 bool allow_huffman_compression_;
97 const HpackHuffmanTable& huffman_table_; 89 const HpackHuffmanTable& huffman_table_;
98 90
99 // Externally-owned, nullable storage for character counts of literals. 91 // Externally-owned, nullable storage for character counts of literals.
100 std::vector<size_t>* char_counts_; 92 std::vector<size_t>* char_counts_;
101 size_t* total_char_counts_; 93 size_t* total_char_counts_;
102 94
103 DISALLOW_COPY_AND_ASSIGN(HpackEncoder); 95 DISALLOW_COPY_AND_ASSIGN(HpackEncoder);
104 }; 96 };
105 97
106 } // namespace net 98 } // namespace net
107 99
108 #endif // NET_SPDY_HPACK_ENCODER_H_ 100 #endif // NET_SPDY_HPACK_ENCODER_H_
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