naiveproxy/net/http2/decoder/payload_decoders/data_payload_decoder.h
2018-01-29 00:30:36 +08:00

55 lines
1.7 KiB
C++

// Copyright 2016 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 NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_
#define NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_
// Decodes the payload of a DATA frame.
#include "net/http2/decoder/decode_buffer.h"
#include "net/http2/decoder/decode_status.h"
#include "net/http2/decoder/frame_decoder_state.h"
#include "net/http2/platform/api/http2_export.h"
namespace net {
namespace test {
class DataPayloadDecoderPeer;
} // namespace test
class HTTP2_EXPORT_PRIVATE DataPayloadDecoder {
public:
// States during decoding of a DATA frame.
enum class PayloadState {
// The frame is padded and we need to read the PAD_LENGTH field (1 byte),
// and then call OnPadLength
kReadPadLength,
// Report the non-padding portion of the payload to the listener's
// OnDataPayload method.
kReadPayload,
// The decoder has finished with the non-padding portion of the payload,
// and is now ready to skip the trailing padding, if the frame has any.
kSkipPadding,
};
// Starts decoding a DATA frame's payload, and completes it if
// the entire payload is in the provided decode buffer.
DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db);
// Resumes decoding a DATA frame's payload that has been split across
// decode buffers.
DecodeStatus ResumeDecodingPayload(FrameDecoderState* state,
DecodeBuffer* db);
private:
friend class test::DataPayloadDecoderPeer;
PayloadState payload_state_;
};
} // namespace net
#endif // NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_