blob: 7c5b6a2b1c1d99e467bc80ad9ba7260a1ce27a2a [file] [log] [blame]
// 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.
// Decodes the payload of a PUSH_PROMISE frame.
#include "http2/decoder/decode_buffer.h"
#include "http2/decoder/decode_status.h"
#include "http2/decoder/frame_decoder_state.h"
#include "http2/http2_structures.h"
#include "common/platform/api/quiche_export.h"
namespace http2 {
namespace test {
class PushPromisePayloadDecoderPeer;
} // namespace test
class QUICHE_EXPORT_PRIVATE PushPromisePayloadDecoder {
// States during decoding of a PUSH_PROMISE frame.
enum class PayloadState {
// The frame is padded and we need to read the PAD_LENGTH field (1 byte).
// Ready to start decoding the fixed size fields of the PUSH_PROMISE
// frame into push_promise_fields_.
// The decoder has already called OnPushPromiseStart, and is now reporting
// the HPACK block fragment to the listener's OnHpackFragment method.
// The decoder has finished with the HPACK block fragment, and is now
// ready to skip the trailing padding, if the frame has any.
// The fixed size fields weren't all available when the decoder first tried
// to decode them (state kStartDecodingPushPromiseFields); this state
// resumes the decoding when ResumeDecodingPayload is called later.
// Starts the decoding of a PUSH_PROMISE frame's payload, and completes it if
// the entire payload is in the provided decode buffer.
DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db);
// Resumes decoding a PUSH_PROMISE frame's payload that has been split across
// decode buffers.
DecodeStatus ResumeDecodingPayload(FrameDecoderState* state,
DecodeBuffer* db);
friend class test::PushPromisePayloadDecoderPeer;
void ReportPushPromise(FrameDecoderState* state);
PayloadState payload_state_;
Http2PushPromiseFields push_promise_fields_;
} // namespace http2