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QUICHE teama6ef0a62019-03-07 20:34:33 -05001// Copyright (c) 2016 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 QUICHE_QUIC_CORE_QUIC_VERSION_MANAGER_H_
6#define QUICHE_QUIC_CORE_QUIC_VERSION_MANAGER_H_
7
8#include "net/third_party/quiche/src/quic/core/quic_versions.h"
9#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
10
11namespace quic {
12
13// Used to generate filtered supported versions based on flags.
14class QUIC_EXPORT_PRIVATE QuicVersionManager {
15 public:
16 // |supported_versions| should be sorted in the order of preference (typically
17 // highest supported version to the lowest supported version).
18 explicit QuicVersionManager(ParsedQuicVersionVector supported_versions);
19 virtual ~QuicVersionManager();
20
21 // Returns currently supported QUIC versions.
22 // TODO(nharper): Remove this method once it is unused.
23 const QuicTransportVersionVector& GetSupportedTransportVersions();
24
25 // Returns currently supported QUIC versions. This vector has the same order
26 // as the versions passed to the constructor.
27 const ParsedQuicVersionVector& GetSupportedVersions();
28
29 protected:
30 // Maybe refilter filtered_supported_versions_ based on flags.
31 void MaybeRefilterSupportedVersions();
32
33 // Refilters filtered_supported_versions_.
34 virtual void RefilterSupportedVersions();
35
rchd17a7402019-08-22 15:08:04 -070036 const QuicTransportVersionVector& filtered_transport_versions() const {
QUICHE teama6ef0a62019-03-07 20:34:33 -050037 return filtered_transport_versions_;
38 }
39
40 private:
41 // quic_enable_version_99 flag
42 bool enable_version_99_;
nharperd0f4a162019-08-21 11:03:21 -070043 // quic_enable_version_48_2 flag
nharper107ba5f2019-07-02 21:33:39 -070044 bool enable_version_48_;
QUICHE teama6ef0a62019-03-07 20:34:33 -050045 // quic_enable_version_47 flag
46 bool enable_version_47_;
QUICHE teama6ef0a62019-03-07 20:34:33 -050047 // quic_disable_version_39 flag
48 bool disable_version_39_;
nharperf5e68452019-05-29 17:24:18 -070049 // quic_supports_tls_handshake flag
50 bool enable_tls_;
QUICHE teama6ef0a62019-03-07 20:34:33 -050051 // The list of versions that may be supported.
52 ParsedQuicVersionVector allowed_supported_versions_;
53 // This vector contains QUIC versions which are currently supported based on
54 // flags.
55 ParsedQuicVersionVector filtered_supported_versions_;
56 // This vector contains the transport versions from
57 // |filtered_supported_versions_|. No guarantees are made that the same
58 // transport version isn't repeated.
59 QuicTransportVersionVector filtered_transport_versions_;
60};
61
62} // namespace quic
63
64#endif // QUICHE_QUIC_CORE_QUIC_VERSION_MANAGER_H_