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// Copyright (c) 2016 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.
#include "net/third_party/quiche/src/quic/core/quic_version_manager.h"
#include "net/third_party/quiche/src/quic/core/quic_versions.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flag_utils.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_flags.h"
#include <algorithm>
namespace quic {
QuicVersionManager::QuicVersionManager(
ParsedQuicVersionVector supported_versions)
: enable_version_99_(GetQuicReloadableFlag(quic_enable_version_99)),
enable_version_48_(GetQuicReloadableFlag(quic_enable_version_48)),
enable_version_47_(GetQuicReloadableFlag(quic_enable_version_47)),
disable_version_44_(GetQuicReloadableFlag(quic_disable_version_44)),
disable_version_39_(GetQuicReloadableFlag(quic_disable_version_39)),
enable_tls_(GetQuicFlag(FLAGS_quic_supports_tls_handshake)),
allowed_supported_versions_(std::move(supported_versions)) {
RefilterSupportedVersions();
}
QuicVersionManager::~QuicVersionManager() {}
const QuicTransportVersionVector&
QuicVersionManager::GetSupportedTransportVersions() {
MaybeRefilterSupportedVersions();
return filtered_transport_versions_;
}
const ParsedQuicVersionVector& QuicVersionManager::GetSupportedVersions() {
MaybeRefilterSupportedVersions();
return filtered_supported_versions_;
}
void QuicVersionManager::MaybeRefilterSupportedVersions() {
if (enable_version_99_ != GetQuicReloadableFlag(quic_enable_version_99) ||
enable_version_48_ != GetQuicReloadableFlag(quic_enable_version_48) ||
enable_version_47_ != GetQuicReloadableFlag(quic_enable_version_47) ||
disable_version_44_ != GetQuicReloadableFlag(quic_disable_version_44) ||
disable_version_39_ != GetQuicReloadableFlag(quic_disable_version_39) ||
enable_tls_ != GetQuicFlag(FLAGS_quic_supports_tls_handshake)) {
enable_version_99_ = GetQuicReloadableFlag(quic_enable_version_99);
enable_version_48_ = GetQuicReloadableFlag(quic_enable_version_48);
enable_version_47_ = GetQuicReloadableFlag(quic_enable_version_47);
disable_version_44_ = GetQuicReloadableFlag(quic_disable_version_44);
disable_version_39_ = GetQuicReloadableFlag(quic_disable_version_39);
enable_tls_ = GetQuicFlag(FLAGS_quic_supports_tls_handshake);
RefilterSupportedVersions();
}
}
void QuicVersionManager::RefilterSupportedVersions() {
filtered_supported_versions_ =
FilterSupportedVersions(allowed_supported_versions_);
filtered_transport_versions_.clear();
for (ParsedQuicVersion version : filtered_supported_versions_) {
auto transport_version = version.transport_version;
if (std::find(filtered_transport_versions_.begin(),
filtered_transport_versions_.end(),
transport_version) == filtered_transport_versions_.end()) {
filtered_transport_versions_.push_back(transport_version);
}
}
}
} // namespace quic