diff options
Diffstat (limited to 'chromium/net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.cc')
-rw-r--r-- | chromium/net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.cc | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/chromium/net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.cc b/chromium/net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.cc new file mode 100644 index 00000000000..aa9c8172f32 --- /dev/null +++ b/chromium/net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.cc @@ -0,0 +1,58 @@ +// 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. + +#include "net/third_party/quiche/src/http2/decoder/payload_decoders/continuation_payload_decoder.h" + +#include <stddef.h> + +#include "base/logging.h" +#include "net/third_party/quiche/src/http2/decoder/decode_buffer.h" +#include "net/third_party/quiche/src/http2/decoder/http2_frame_decoder_listener.h" +#include "net/third_party/quiche/src/http2/http2_constants.h" +#include "net/third_party/quiche/src/http2/http2_structures.h" + +namespace http2 { + +DecodeStatus ContinuationPayloadDecoder::StartDecodingPayload( + FrameDecoderState* state, + DecodeBuffer* db) { + const Http2FrameHeader& frame_header = state->frame_header(); + const uint32_t total_length = frame_header.payload_length; + + DVLOG(2) << "ContinuationPayloadDecoder::StartDecodingPayload: " + << frame_header; + DCHECK_EQ(Http2FrameType::CONTINUATION, frame_header.type); + DCHECK_LE(db->Remaining(), total_length); + DCHECK_EQ(0, frame_header.flags & ~(Http2FrameFlag::END_HEADERS)); + + state->InitializeRemainders(); + state->listener()->OnContinuationStart(frame_header); + return ResumeDecodingPayload(state, db); +} + +DecodeStatus ContinuationPayloadDecoder::ResumeDecodingPayload( + FrameDecoderState* state, + DecodeBuffer* db) { + DVLOG(2) << "ContinuationPayloadDecoder::ResumeDecodingPayload" + << " remaining_payload=" << state->remaining_payload() + << " db->Remaining=" << db->Remaining(); + DCHECK_EQ(Http2FrameType::CONTINUATION, state->frame_header().type); + DCHECK_LE(state->remaining_payload(), state->frame_header().payload_length); + DCHECK_LE(db->Remaining(), state->remaining_payload()); + + size_t avail = db->Remaining(); + DCHECK_LE(avail, state->remaining_payload()); + if (avail > 0) { + state->listener()->OnHpackFragment(db->cursor(), avail); + db->AdvanceCursor(avail); + state->ConsumePayload(avail); + } + if (state->remaining_payload() == 0) { + state->listener()->OnContinuationEnd(); + return DecodeStatus::kDecodeDone; + } + return DecodeStatus::kDecodeInProgress; +} + +} // namespace http2 |