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// Copyright (c) 2017 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_QUIC_STREAM_FRAME_DATA_PRODUCER_H_
#define QUICHE_QUIC_CORE_QUIC_STREAM_FRAME_DATA_PRODUCER_H_
#include "net/third_party/quiche/src/quic/core/quic_types.h"
namespace quic {
class QuicDataWriter;
// Pure virtual class to retrieve stream data.
class QUIC_EXPORT_PRIVATE QuicStreamFrameDataProducer {
public:
virtual ~QuicStreamFrameDataProducer() {}
// Let |writer| write |data_length| data with |offset| of stream |id|. The
// write fails when either stream is closed or corresponding data is failed to
// be retrieved. This method allows writing a single stream frame from data
// that spans multiple buffers.
virtual WriteStreamDataResult WriteStreamData(QuicStreamId id,
QuicStreamOffset offset,
QuicByteCount data_length,
QuicDataWriter* writer) = 0;
// Writes the data for a CRYPTO frame to |writer| for a frame at encryption
// level |level| starting at offset |offset| for |data_length| bytes. Returns
// whether writing the data was successful.
virtual bool WriteCryptoData(EncryptionLevel level,
QuicStreamOffset offset,
QuicByteCount data_length,
QuicDataWriter* writer) = 0;
};
} // namespace quic
#endif // QUICHE_QUIC_CORE_QUIC_STREAM_FRAME_DATA_PRODUCER_H_
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