| /** @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 "QUICPinger.h" |
| |
| void |
| QUICPinger::request(QUICEncryptionLevel level) |
| { |
| if (!this->_is_level_matched(level)) { |
| return; |
| } |
| ++this->_need_to_fire[static_cast<int>(level)]; |
| } |
| |
| void |
| QUICPinger::cancel(QUICEncryptionLevel level) |
| { |
| if (!this->_is_level_matched(level)) { |
| return; |
| } |
| |
| if (this->_need_to_fire[static_cast<int>(level)] > 0) { |
| --this->_need_to_fire[static_cast<int>(level)]; |
| } |
| } |
| |
| bool |
| QUICPinger::will_generate_frame(QUICEncryptionLevel level, ink_hrtime timestamp) |
| { |
| if (!this->_is_level_matched(level)) { |
| return false; |
| } |
| |
| return this->_need_to_fire[static_cast<int>(QUICTypeUtil::pn_space(level))] > 0; |
| } |
| |
| /** |
| * @param connection_credit This is not used. Because PING frame is not flow-controlled |
| */ |
| QUICFrame * |
| QUICPinger::generate_frame(uint8_t *buf, QUICEncryptionLevel level, uint64_t /* connection_credit */, uint16_t maximum_frame_size, |
| ink_hrtime timestamp) |
| { |
| QUICFrame *frame = nullptr; |
| |
| if (!this->_is_level_matched(level)) { |
| return frame; |
| } |
| |
| if (this->_need_to_fire[static_cast<int>(level)] > 0 && maximum_frame_size > 0) { |
| // don't care ping frame lost or acked |
| frame = QUICFrameFactory::create_ping_frame(buf, 0, nullptr); |
| this->_need_to_fire[static_cast<int>(level)] = 0; |
| } |
| |
| return frame; |
| } |