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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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