From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- .../net/dcsctp/socket/heartbeat_handler.h | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler.h (limited to 'third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler.h') diff --git a/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler.h b/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler.h new file mode 100644 index 0000000000..14c3109534 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/socket/heartbeat_handler.h @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#ifndef NET_DCSCTP_SOCKET_HEARTBEAT_HANDLER_H_ +#define NET_DCSCTP_SOCKET_HEARTBEAT_HANDLER_H_ + +#include + +#include +#include + +#include "absl/strings/string_view.h" +#include "net/dcsctp/packet/chunk/heartbeat_ack_chunk.h" +#include "net/dcsctp/packet/chunk/heartbeat_request_chunk.h" +#include "net/dcsctp/packet/sctp_packet.h" +#include "net/dcsctp/public/dcsctp_options.h" +#include "net/dcsctp/socket/context.h" +#include "net/dcsctp/timer/timer.h" + +namespace dcsctp { + +// HeartbeatHandler handles all logic around sending heartbeats and receiving +// the responses, as well as receiving incoming heartbeat requests. +// +// Heartbeats are sent on idle connections to ensure that the connection is +// still healthy and to measure the RTT. If a number of heartbeats time out, +// the connection will eventually be closed. +class HeartbeatHandler { + public: + HeartbeatHandler(absl::string_view log_prefix, + const DcSctpOptions& options, + Context* context, + TimerManager* timer_manager); + + // Called when the heartbeat interval timer should be restarted. This is + // generally done every time data is sent, which makes the timer expire when + // the connection is idle. + void RestartTimer(); + + // Called on received HeartbeatRequestChunk chunks. + void HandleHeartbeatRequest(HeartbeatRequestChunk chunk); + + // Called on received HeartbeatRequestChunk chunks. + void HandleHeartbeatAck(HeartbeatAckChunk chunk); + + private: + absl::optional OnIntervalTimerExpiry(); + absl::optional OnTimeoutTimerExpiry(); + + const std::string log_prefix_; + Context* ctx_; + TimerManager* timer_manager_; + // The time for a connection to be idle before a heartbeat is sent. + const DurationMs interval_duration_; + // Adding RTT to the duration will add some jitter, which is good in + // production, but less good in unit tests, which is why it can be disabled. + const bool interval_duration_should_include_rtt_; + const std::unique_ptr interval_timer_; + const std::unique_ptr timeout_timer_; +}; +} // namespace dcsctp + +#endif // NET_DCSCTP_SOCKET_HEARTBEAT_HANDLER_H_ -- cgit v1.2.3