| // 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. |
| |
| #ifndef QUICHE_QUIC_CORE_FRAMES_QUIC_BLOCKED_FRAME_H_ |
| #define QUICHE_QUIC_CORE_FRAMES_QUIC_BLOCKED_FRAME_H_ |
| |
| #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 |
| |
| #endif // QUICHE_QUIC_CORE_FRAMES_QUIC_BLOCKED_FRAME_H_ |