| // Copyright (c) 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file contains data structures and utility functions used for serializing |
| // and parsing alternative service header values, common to HTTP/1.1 header |
| // fields and HTTP/2 and QUIC ALTSVC frames. See specification at |
| // https://httpwg.github.io/http-extensions/alt-svc.html. |
| |
| #ifndef NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ |
| #define NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ |
| |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/strings/string_piece.h" |
| #include "net/base/net_export.h" |
| |
| namespace net { |
| |
| namespace test { |
| class SpdyAltSvcWireFormatPeer; |
| } // namespace test |
| |
| class NET_EXPORT_PRIVATE SpdyAltSvcWireFormat { |
| public: |
| using VersionVector = std::vector<uint16_t>; |
| |
| struct NET_EXPORT_PRIVATE AlternativeService { |
| std::string protocol_id; |
| std::string host; |
| |
| // Default is 0: invalid port. |
| uint16_t port = 0; |
| // Default is one day. |
| uint32_t max_age = 86400; |
| // Default is empty: unspecified version. |
| VersionVector version; |
| |
| AlternativeService(); |
| AlternativeService(const std::string& protocol_id, |
| const std::string& host, |
| uint16_t port, |
| uint32_t max_age, |
| VersionVector version); |
| AlternativeService(const AlternativeService& other); |
| ~AlternativeService(); |
| |
| bool operator==(const AlternativeService& other) const { |
| return protocol_id == other.protocol_id && host == other.host && |
| port == other.port && version == other.version && |
| max_age == other.max_age; |
| } |
| }; |
| // An empty vector means alternative services should be cleared for given |
| // origin. Note that the wire format for this is the string "clear", not an |
| // empty value (which is invalid). |
| typedef std::vector<AlternativeService> AlternativeServiceVector; |
| |
| friend class test::SpdyAltSvcWireFormatPeer; |
| static bool ParseHeaderFieldValue(base::StringPiece value, |
| AlternativeServiceVector* altsvc_vector); |
| static std::string SerializeHeaderFieldValue( |
| const AlternativeServiceVector& altsvc_vector); |
| |
| private: |
| static void SkipWhiteSpace(base::StringPiece::const_iterator* c, |
| base::StringPiece::const_iterator end); |
| static bool PercentDecode(base::StringPiece::const_iterator c, |
| base::StringPiece::const_iterator end, |
| std::string* output); |
| static bool ParseAltAuthority(base::StringPiece::const_iterator c, |
| base::StringPiece::const_iterator end, |
| std::string* host, |
| uint16_t* port); |
| static bool ParsePositiveInteger16(base::StringPiece::const_iterator c, |
| base::StringPiece::const_iterator end, |
| uint16_t* value); |
| static bool ParsePositiveInteger32(base::StringPiece::const_iterator c, |
| base::StringPiece::const_iterator end, |
| uint32_t* value); |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_ |