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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_SETTINGS_PAYLOAD_DECODER_H_ | |
6 #define NET_HTTP2_DECODER_PAYLOAD_DECODERS_SETTINGS_PAYLOAD_DECODER_H_ | |
7 | |
8 // Decodes the payload of a SETTINGS frame; for the RFC, see: | |
9 // http://httpwg.org/specs/rfc7540.html#SETTINGS | |
10 | |
11 #include "net/base/net_export.h" | |
12 #include "net/http2/decoder/decode_buffer.h" | |
13 #include "net/http2/decoder/decode_status.h" | |
14 #include "net/http2/decoder/frame_decoder_state.h" | |
15 #include "net/http2/http2_structures.h" | |
16 | |
17 namespace net { | |
18 namespace test { | |
19 class SettingsPayloadDecoderPeer; | |
20 } // namespace test | |
21 | |
22 class NET_EXPORT_PRIVATE SettingsPayloadDecoder { | |
23 public: | |
24 // Starts the decoding of a SETTINGS frame's payload, and completes it if | |
25 // the entire payload is in the provided decode buffer. | |
26 DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db); | |
27 | |
28 // Resumes decoding a SETTINGS frame that has been split across decode | |
29 // buffers. | |
30 DecodeStatus ResumeDecodingPayload(FrameDecoderState* state, | |
31 DecodeBuffer* db); | |
32 | |
33 private: | |
34 friend class test::SettingsPayloadDecoderPeer; | |
35 | |
36 // Decodes as many settings as are available in the decode buffer, starting at | |
37 // the first byte of one setting; if a single setting is split across buffers, | |
38 // ResumeDecodingPayload will handle starting from where the previous call | |
39 // left off, and then will call StartDecodingSettings. | |
40 DecodeStatus StartDecodingSettings(FrameDecoderState* state, | |
41 DecodeBuffer* db); | |
42 | |
43 // Decoding a single SETTING returned a status other than kDecodeDone; this | |
44 // method just brings together the DCHECKs to reduce duplication. | |
45 DecodeStatus HandleNotDone(FrameDecoderState* state, | |
46 DecodeBuffer* db, | |
47 DecodeStatus status); | |
48 | |
49 Http2SettingFields setting_fields_; | |
50 }; | |
51 | |
52 } // namespace net | |
53 | |
54 #endif // NET_HTTP2_DECODER_PAYLOAD_DECODERS_SETTINGS_PAYLOAD_DECODER_H_ | |
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