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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_ |
| 6 #define NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_ |
| 7 |
| 8 // Decodes the payload of a DATA frame. |
| 9 |
| 10 #include "net/base/net_export.h" |
| 11 #include "net/http2/decoder/decode_buffer.h" |
| 12 #include "net/http2/decoder/decode_status.h" |
| 13 #include "net/http2/decoder/frame_decoder_state.h" |
| 14 |
| 15 namespace net { |
| 16 namespace test { |
| 17 class DataPayloadDecoderPeer; |
| 18 } // namespace test |
| 19 |
| 20 class NET_EXPORT_PRIVATE DataPayloadDecoder { |
| 21 public: |
| 22 // States during decoding of a DATA frame. |
| 23 enum class PayloadState { |
| 24 // The frame is padded and we need to read the PAD_LENGTH field (1 byte), |
| 25 // and then call OnPadLength |
| 26 kReadPadLength, |
| 27 |
| 28 // Report the non-padding portion of the payload to the listener's |
| 29 // OnDataPayload method. |
| 30 kReadPayload, |
| 31 |
| 32 // The decoder has finished with the non-padding portion of the payload, |
| 33 // and is now ready to skip the trailing padding, if the frame has any. |
| 34 kSkipPadding, |
| 35 }; |
| 36 |
| 37 // Starts decoding a DATA frame's payload, and completes it if |
| 38 // the entire payload is in the provided decode buffer. |
| 39 DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db); |
| 40 |
| 41 // Resumes decoding a DATA frame's payload that has been split across |
| 42 // decode buffers. |
| 43 DecodeStatus ResumeDecodingPayload(FrameDecoderState* state, |
| 44 DecodeBuffer* db); |
| 45 |
| 46 private: |
| 47 friend class test::DataPayloadDecoderPeer; |
| 48 |
| 49 PayloadState payload_state_; |
| 50 }; |
| 51 |
| 52 } // namespace net |
| 53 |
| 54 #endif // NET_HTTP2_DECODER_PAYLOAD_DECODERS_DATA_PAYLOAD_DECODER_H_ |
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