File: async_packet_socket.cc

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/*
 *  Copyright 2015 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.
 */

#include "rtc_base/async_packet_socket.h"

#include <cstddef>
#include <functional>
#include <utility>

#include "absl/functional/any_invocable.h"
#include "api/sequence_checker.h"
#include "rtc_base/checks.h"
#include "rtc_base/dscp.h"
#include "rtc_base/network/received_packet.h"
#include "rtc_base/network/sent_packet.h"

namespace webrtc {

AsyncSocketPacketOptions::AsyncSocketPacketOptions() = default;
AsyncSocketPacketOptions::AsyncSocketPacketOptions(DiffServCodePoint dscp)
    : dscp(dscp) {}
AsyncSocketPacketOptions::AsyncSocketPacketOptions(
    const AsyncSocketPacketOptions& other) = default;
AsyncSocketPacketOptions::~AsyncSocketPacketOptions() = default;

PacketTimeUpdateParams::PacketTimeUpdateParams() = default;

PacketTimeUpdateParams::PacketTimeUpdateParams(
    const PacketTimeUpdateParams& other) = default;

PacketTimeUpdateParams::~PacketTimeUpdateParams() = default;

AsyncPacketSocket::~AsyncPacketSocket() = default;

void AsyncPacketSocket::SubscribeCloseEvent(
    const void* removal_tag,
    std::function<void(AsyncPacketSocket*, int)> callback) {
  RTC_DCHECK_RUN_ON(&network_checker_);
  on_close_.AddReceiver(removal_tag, std::move(callback));
}

void AsyncPacketSocket::UnsubscribeCloseEvent(const void* removal_tag) {
  RTC_DCHECK_RUN_ON(&network_checker_);
  on_close_.RemoveReceivers(removal_tag);
}

void AsyncPacketSocket::RegisterReceivedPacketCallback(
    absl::AnyInvocable<void(AsyncPacketSocket*, const ReceivedIpPacket&)>
        received_packet_callback) {
  RTC_DCHECK_RUN_ON(&network_checker_);
  RTC_CHECK(!received_packet_callback_);
  received_packet_callback_ = std::move(received_packet_callback);
}

void AsyncPacketSocket::DeregisterReceivedPacketCallback() {
  RTC_DCHECK_RUN_ON(&network_checker_);
  received_packet_callback_ = nullptr;
}

void AsyncPacketSocket::NotifyPacketReceived(const ReceivedIpPacket& packet) {
  RTC_DCHECK_RUN_ON(&network_checker_);
  if (received_packet_callback_) {
    received_packet_callback_(this, packet);
    return;
  }
}

void CopySocketInformationToPacketInfo(size_t packet_size_bytes,
                                       const AsyncPacketSocket& socket_from,
                                       PacketInfo* info) {
  info->packet_size_bytes = packet_size_bytes;
  info->ip_overhead_bytes = socket_from.GetLocalAddress().ipaddr().overhead();
}

}  // namespace webrtc