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// Copyright (c) 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 <ostream>
#include "quic/core/quic_constants.h"
#include "quic/core/quic_types.h"
namespace quic {
// The BLOCKED frame is used to indicate to the remote endpoint that this
// endpoint believes itself to be flow-control blocked but otherwise ready to
// send data. The BLOCKED frame is purely advisory and optional.
// Based on SPDY's BLOCKED frame (undocumented as of 2014-01-28).
struct QUIC_EXPORT_PRIVATE QuicBlockedFrame {
QuicBlockedFrame() = default;
QuicBlockedFrame(QuicControlFrameId control_frame_id, QuicStreamId stream_id);
QuicBlockedFrame(QuicControlFrameId control_frame_id,
QuicStreamId stream_id,
QuicStreamOffset offset);
friend QUIC_EXPORT_PRIVATE std::ostream& operator<<(
std::ostream& os,
const QuicBlockedFrame& b);
// A unique identifier of this control frame. 0 when this frame is received,
// and non-zero when sent.
QuicControlFrameId control_frame_id = kInvalidControlFrameId;
// 0 is a special case meaning the connection is blocked, rather than a
// stream. So stream_id 0 corresponds to a BLOCKED frame and non-0
// corresponds to a STREAM_BLOCKED.
// TODO(fkastenholz): This should be converted to use
// QuicUtils::GetInvalidStreamId to get the correct invalid stream id value
// and not rely on 0.
QuicStreamId stream_id = 0;
// For Google QUIC, the offset is ignored.
QuicStreamOffset offset = 0;
} // namespace quic