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1 // Copyright (c) 2015 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 // This file contains data structures and utility functions used for serializing | |
6 // and parsing alternative service header values, common to HTTP/1.1 header | |
7 // fields and HTTP/2 and QUIC ALTSVC frames. See specification at | |
8 // https://httpwg.github.io/http-extensions/alt-svc.html. | |
9 | |
10 #ifndef NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ | |
11 #define NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ | |
12 | |
13 #include <cstdint> | |
14 #include <vector> | |
15 | |
16 #include "net/base/net_export.h" | |
17 #include "net/spdy/platform/api/spdy_string.h" | |
18 #include "net/spdy/platform/api/spdy_string_piece.h" | |
19 | |
20 namespace net { | |
21 | |
22 namespace test { | |
23 class SpdyAltSvcWireFormatPeer; | |
24 } // namespace test | |
25 | |
26 class NET_EXPORT_PRIVATE SpdyAltSvcWireFormat { | |
27 public: | |
28 using VersionVector = std::vector<uint16_t>; | |
29 | |
30 struct NET_EXPORT_PRIVATE AlternativeService { | |
31 SpdyString protocol_id; | |
32 SpdyString host; | |
33 | |
34 // Default is 0: invalid port. | |
35 uint16_t port = 0; | |
36 // Default is one day. | |
37 uint32_t max_age = 86400; | |
38 // Default is empty: unspecified version. | |
39 VersionVector version; | |
40 | |
41 AlternativeService(); | |
42 AlternativeService(const SpdyString& protocol_id, | |
43 const SpdyString& host, | |
44 uint16_t port, | |
45 uint32_t max_age, | |
46 VersionVector version); | |
47 AlternativeService(const AlternativeService& other); | |
48 ~AlternativeService(); | |
49 | |
50 bool operator==(const AlternativeService& other) const { | |
51 return protocol_id == other.protocol_id && host == other.host && | |
52 port == other.port && version == other.version && | |
53 max_age == other.max_age; | |
54 } | |
55 }; | |
56 // An empty vector means alternative services should be cleared for given | |
57 // origin. Note that the wire format for this is the string "clear", not an | |
58 // empty value (which is invalid). | |
59 typedef std::vector<AlternativeService> AlternativeServiceVector; | |
60 | |
61 friend class test::SpdyAltSvcWireFormatPeer; | |
62 static bool ParseHeaderFieldValue(SpdyStringPiece value, | |
63 AlternativeServiceVector* altsvc_vector); | |
64 static SpdyString SerializeHeaderFieldValue( | |
65 const AlternativeServiceVector& altsvc_vector); | |
66 | |
67 private: | |
68 static void SkipWhiteSpace(SpdyStringPiece::const_iterator* c, | |
69 SpdyStringPiece::const_iterator end); | |
70 static bool PercentDecode(SpdyStringPiece::const_iterator c, | |
71 SpdyStringPiece::const_iterator end, | |
72 SpdyString* output); | |
73 static bool ParseAltAuthority(SpdyStringPiece::const_iterator c, | |
74 SpdyStringPiece::const_iterator end, | |
75 SpdyString* host, | |
76 uint16_t* port); | |
77 static bool ParsePositiveInteger16(SpdyStringPiece::const_iterator c, | |
78 SpdyStringPiece::const_iterator end, | |
79 uint16_t* value); | |
80 static bool ParsePositiveInteger32(SpdyStringPiece::const_iterator c, | |
81 SpdyStringPiece::const_iterator end, | |
82 uint32_t* value); | |
83 }; | |
84 | |
85 } // namespace net | |
86 | |
87 #endif // NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ | |
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