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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 #include "net/http2/decoder/payload_decoders/window_update_payload_decoder.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "net/http2/decoder/decode_buffer.h" | |
| 9 #include "net/http2/decoder/decode_http2_structures.h" | |
| 10 #include "net/http2/decoder/http2_frame_decoder_listener.h" | |
| 11 #include "net/http2/http2_constants.h" | |
| 12 #include "net/http2/http2_structures.h" | |
| 13 | |
| 14 namespace net { | |
| 15 | |
| 16 DecodeStatus WindowUpdatePayloadDecoder::StartDecodingPayload( | |
| 17 FrameDecoderState* state, | |
| 18 DecodeBuffer* db) { | |
| 19 const Http2FrameHeader& frame_header = state->frame_header(); | |
| 20 const uint32_t total_length = frame_header.payload_length; | |
| 21 | |
| 22 DVLOG(2) << "WindowUpdatePayloadDecoder::StartDecodingPayload: " | |
| 23 << frame_header; | |
| 24 | |
| 25 DCHECK_EQ(Http2FrameType::WINDOW_UPDATE, frame_header.type); | |
| 26 DCHECK_LE(db->Remaining(), total_length); | |
| 27 | |
| 28 // WINDOW_UPDATE frames have no flags. | |
| 29 DCHECK_EQ(0, frame_header.flags); | |
| 30 | |
| 31 // Special case for when the payload is the correct size and entirely in | |
| 32 // the buffer. | |
| 33 if (db->Remaining() == Http2WindowUpdateFields::EncodedSize() && | |
| 34 total_length == Http2WindowUpdateFields::EncodedSize()) { | |
| 35 DoDecode(&window_update_fields_, db); | |
| 36 state->listener()->OnWindowUpdate( | |
| 37 frame_header, window_update_fields_.window_size_increment); | |
| 38 return DecodeStatus::kDecodeDone; | |
| 39 } | |
| 40 state->InitializeRemainders(); | |
| 41 return HandleStatus(state, state->StartDecodingStructureInPayload( | |
| 42 &window_update_fields_, db)); | |
| 43 } | |
| 44 | |
| 45 DecodeStatus WindowUpdatePayloadDecoder::ResumeDecodingPayload( | |
| 46 FrameDecoderState* state, | |
| 47 DecodeBuffer* db) { | |
| 48 DVLOG(2) << "ResumeDecodingPayload: remaining_payload=" | |
| 49 << state->remaining_payload() | |
| 50 << "; db->Remaining=" << db->Remaining(); | |
| 51 DCHECK_EQ(Http2FrameType::WINDOW_UPDATE, state->frame_header().type); | |
| 52 DCHECK_LE(db->Remaining(), state->frame_header().payload_length); | |
| 53 return HandleStatus(state, state->ResumeDecodingStructureInPayload( | |
| 54 &window_update_fields_, db)); | |
| 55 } | |
| 56 | |
| 57 DecodeStatus WindowUpdatePayloadDecoder::HandleStatus(FrameDecoderState* state, | |
| 58 DecodeStatus status) { | |
| 59 DVLOG(2) << "HandleStatus: status=" << status | |
| 60 << "; remaining_payload=" << state->remaining_payload(); | |
| 61 if (status == DecodeStatus::kDecodeDone) { | |
| 62 if (state->remaining_payload() == 0) { | |
| 63 state->listener()->OnWindowUpdate( | |
| 64 state->frame_header(), window_update_fields_.window_size_increment); | |
| 65 return DecodeStatus::kDecodeDone; | |
| 66 } | |
| 67 // Payload is too long. | |
| 68 return state->ReportFrameSizeError(); | |
| 69 } | |
| 70 // Not done decoding the structure. Either we've got more payload to decode, | |
| 71 // or we've run out because the payload is too short, in which case | |
| 72 // OnFrameSizeError will have already been called. | |
| 73 DCHECK( | |
| 74 (status == DecodeStatus::kDecodeInProgress && | |
| 75 state->remaining_payload() > 0) || | |
| 76 (status == DecodeStatus::kDecodeError && state->remaining_payload() == 0)) | |
| 77 << "\n status=" << status | |
| 78 << "; remaining_payload=" << state->remaining_payload(); | |
| 79 return status; | |
| 80 } | |
| 81 | |
| 82 } // namespace net | |
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Chromium Code Reviews
Issue 2554683003:
Revert of Add new HTTP/2 and HPACK decoder in net/http2/. (Closed)
