| // Copyright (c) 2018 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. |
| |
| #ifndef QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_ |
| #define QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_ |
| |
| #include <cstdint> |
| |
| #include "net/third_party/quiche/src/quic/core/qpack/qpack_instruction_decoder.h" |
| #include "net/third_party/quiche/src/quic/core/qpack/qpack_stream_receiver.h" |
| #include "net/third_party/quiche/src/quic/core/quic_types.h" |
| #include "net/third_party/quiche/src/quic/platform/api/quic_export.h" |
| #include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h" |
| |
| namespace quic { |
| |
| // This class decodes data received on the decoder stream, |
| // and passes it along to its Delegate. |
| class QUIC_EXPORT_PRIVATE QpackDecoderStreamReceiver |
| : public QpackInstructionDecoder::Delegate, |
| public QpackStreamReceiver { |
| public: |
| // An interface for handling instructions decoded from the decoder stream, see |
| // https://quicwg.org/base-drafts/draft-ietf-quic-qpack.html#rfc.section.5.3 |
| class Delegate { |
| public: |
| virtual ~Delegate() = default; |
| |
| // 5.3.1 Insert Count Increment |
| virtual void OnInsertCountIncrement(uint64_t increment) = 0; |
| // 5.3.2 Header Acknowledgement |
| virtual void OnHeaderAcknowledgement(QuicStreamId stream_id) = 0; |
| // 5.3.3 Stream Cancellation |
| virtual void OnStreamCancellation(QuicStreamId stream_id) = 0; |
| // Decoding error |
| virtual void OnErrorDetected(QuicStringPiece error_message) = 0; |
| }; |
| |
| explicit QpackDecoderStreamReceiver(Delegate* delegate); |
| QpackDecoderStreamReceiver() = delete; |
| QpackDecoderStreamReceiver(const QpackDecoderStreamReceiver&) = delete; |
| QpackDecoderStreamReceiver& operator=(const QpackDecoderStreamReceiver&) = |
| delete; |
| |
| // Implements QpackStreamReceiver::Decode(). |
| // Decode data and call appropriate Delegate method after each decoded |
| // instruction. Once an error occurs, Delegate::OnErrorDetected() is called, |
| // and all further data is ignored. |
| void Decode(QuicStringPiece data) override; |
| |
| // QpackInstructionDecoder::Delegate implementation. |
| bool OnInstructionDecoded(const QpackInstruction* instruction) override; |
| void OnError(QuicStringPiece error_message) override; |
| |
| private: |
| QpackInstructionDecoder instruction_decoder_; |
| Delegate* const delegate_; |
| |
| // True if a decoding error has been detected. |
| bool error_detected_; |
| }; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_ |