| /** @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. |
| */ |
| |
| #pragma once |
| |
| #include "QUICStream.h" |
| |
| class QUICBidirectionalStream : public QUICStreamVConnection, public QUICTransferProgressProvider |
| { |
| public: |
| QUICBidirectionalStream(QUICRTTProvider *rtt_provider, QUICConnectionInfoProvider *cinfo, QUICStreamId sid, |
| uint64_t recv_max_stream_data, uint64_t send_max_stream_data); |
| QUICBidirectionalStream() |
| : QUICStreamVConnection(), |
| _remote_flow_controller(0, 0), |
| _local_flow_controller(nullptr, 0, 0), |
| _state(nullptr, nullptr, nullptr, nullptr) |
| { |
| } |
| |
| ~QUICBidirectionalStream() {} |
| |
| int state_stream_open(int event, void *data); |
| int state_stream_closed(int event, void *data); |
| |
| // QUICFrameGenerator |
| bool will_generate_frame(QUICEncryptionLevel level, size_t current_packet_size, bool ack_eliciting, uint32_t seq_num) override; |
| QUICFrame *generate_frame(uint8_t *buf, QUICEncryptionLevel level, uint64_t connection_credit, uint16_t maximum_frame_size, |
| size_t current_packet_size, uint32_t seq_num) override; |
| |
| virtual QUICConnectionErrorUPtr recv(const QUICStreamFrame &frame) override; |
| virtual QUICConnectionErrorUPtr recv(const QUICMaxStreamDataFrame &frame) override; |
| virtual QUICConnectionErrorUPtr recv(const QUICStreamDataBlockedFrame &frame) override; |
| virtual QUICConnectionErrorUPtr recv(const QUICStopSendingFrame &frame) override; |
| virtual QUICConnectionErrorUPtr recv(const QUICRstStreamFrame &frame) override; |
| |
| // Implement VConnection Interface. |
| VIO *do_io_read(Continuation *c, int64_t nbytes = INT64_MAX, MIOBuffer *buf = 0) override; |
| VIO *do_io_write(Continuation *c = nullptr, int64_t nbytes = INT64_MAX, IOBufferReader *buf = 0, bool owner = false) override; |
| void do_io_close(int lerrno = -1) override; |
| void do_io_shutdown(ShutdownHowTo_t howto) override; |
| void reenable(VIO *vio) override; |
| |
| void stop_sending(QUICStreamErrorUPtr error) override; |
| void reset(QUICStreamErrorUPtr error) override; |
| |
| // QUICTransferProgressProvider |
| bool is_transfer_goal_set() const override; |
| uint64_t transfer_progress() const override; |
| uint64_t transfer_goal() const override; |
| bool is_cancelled() const override; |
| |
| /* |
| * QUICApplication need to call one of these functions when it process VC_EVENT_* |
| */ |
| virtual void on_read() override; |
| virtual void on_eos() override; |
| |
| QUICOffset largest_offset_received() const override; |
| QUICOffset largest_offset_sent() const override; |
| |
| private: |
| QUICStreamErrorUPtr _reset_reason = nullptr; |
| bool _is_reset_sent = false; |
| QUICStreamErrorUPtr _stop_sending_reason = nullptr; |
| bool _is_stop_sending_sent = false; |
| |
| bool _is_transfer_complete = false; |
| bool _is_reset_complete = false; |
| |
| QUICTransferProgressProviderVIO _progress_vio = {this->_write_vio}; |
| |
| QUICRemoteStreamFlowController _remote_flow_controller; |
| QUICLocalStreamFlowController _local_flow_controller; |
| uint64_t _flow_control_buffer_size = 1024; |
| |
| // Fragments of received STREAM frame (offset is unmatched) |
| // TODO: Consider to replace with ts/RbTree.h or other data structure |
| QUICIncomingStreamFrameBuffer _received_stream_frame_buffer; |
| |
| // FIXME Unidirectional streams should use either ReceiveStreamState or SendStreamState |
| QUICBidirectionalStreamStateMachine _state; |
| |
| // QUICFrameGenerator |
| void _on_frame_acked(QUICFrameInformationUPtr &info) override; |
| void _on_frame_lost(QUICFrameInformationUPtr &info) override; |
| }; |