Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/quic_version_manager.cc b/quic/core/quic_version_manager.cc
new file mode 100644
index 0000000..62b2e44
--- /dev/null
+++ b/quic/core/quic_version_manager.cc
@@ -0,0 +1,71 @@
+// 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_47_(GetQuicReloadableFlag(quic_enable_version_47)),
+ enable_version_46_(GetQuicReloadableFlag(quic_enable_version_46)),
+ enable_version_44_(GetQuicReloadableFlag(quic_enable_version_44)),
+ enable_version_43_(GetQuicReloadableFlag(quic_enable_version_43)),
+ disable_version_39_(GetQuicReloadableFlag(quic_disable_version_39)),
+ 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_47_ != GetQuicReloadableFlag(quic_enable_version_47) ||
+ enable_version_46_ != GetQuicReloadableFlag(quic_enable_version_46) ||
+ enable_version_44_ != GetQuicReloadableFlag(quic_enable_version_44) ||
+ enable_version_43_ != GetQuicReloadableFlag(quic_enable_version_43) ||
+ disable_version_39_ != GetQuicReloadableFlag(quic_disable_version_39)) {
+ enable_version_99_ = GetQuicReloadableFlag(quic_enable_version_99);
+ enable_version_47_ = GetQuicReloadableFlag(quic_enable_version_47);
+ enable_version_46_ = GetQuicReloadableFlag(quic_enable_version_46);
+ enable_version_44_ = GetQuicReloadableFlag(quic_enable_version_44);
+ enable_version_43_ = GetQuicReloadableFlag(quic_enable_version_43);
+ disable_version_39_ = GetQuicReloadableFlag(quic_disable_version_39);
+ 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
