| /** @file |
| * |
| * A brief file description |
| * |
| * @section license License |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "QUICVersionNegotiator.h" |
| #include "QUICTransportParameters.h" |
| |
| QUICVersionNegotiationStatus |
| QUICVersionNegotiator::status() const |
| { |
| return this->_status; |
| } |
| |
| QUICVersionNegotiationStatus |
| QUICVersionNegotiator::negotiate(const QUICPacket &packet) |
| { |
| switch (packet.type()) { |
| case QUICPacketType::INITIAL: { |
| const QUICInitialPacketR &initial_packet = static_cast<const QUICInitialPacketR &>(packet); |
| if (QUICTypeUtil::is_supported_version(initial_packet.version())) { |
| this->_status = QUICVersionNegotiationStatus::NEGOTIATED; |
| this->_negotiated_version = initial_packet.version(); |
| } |
| |
| break; |
| } |
| case QUICPacketType::VERSION_NEGOTIATION: { |
| const QUICVersionNegotiationPacketR &vn_packet = static_cast<const QUICVersionNegotiationPacketR &>(packet); |
| uint16_t n_supported_version = vn_packet.nversions(); |
| uint16_t len = 0; |
| |
| for (int i = 0; i < n_supported_version; ++i) { |
| QUICVersion version = vn_packet.supported_version(i); |
| len += sizeof(QUICVersion); |
| |
| if (QUICTypeUtil::is_supported_version(version)) { |
| this->_status = QUICVersionNegotiationStatus::NEGOTIATED; |
| this->_negotiated_version = version; |
| break; |
| } |
| } |
| |
| break; |
| } |
| default: |
| ink_assert(false); |
| break; |
| } |
| |
| return this->_status; |
| } |
| |
| QUICVersionNegotiationStatus |
| QUICVersionNegotiator::validate() const |
| { |
| return this->_status; |
| } |
| |
| QUICVersion |
| QUICVersionNegotiator::negotiated_version() const |
| { |
| return this->_negotiated_version; |
| } |