rtc_base/networkroute.h

/*
 *  Copyright 2016 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 RTC_BASE_NETWORKROUTE_H_
#define RTC_BASE_NETWORKROUTE_H_

// TODO(honghaiz): Make a directory that describes the interfaces and structs
// the media code can rely on and the network code can implement, and both can
// depend on that, but not depend on each other. Then, move this file to that
// directory.
namespace rtc {

struct NetworkRoute {
  bool connected;
  uint16_t local_network_id;
  uint16_t remote_network_id;
  int last_sent_packet_id;  // Last packet id sent on the PREVIOUS route.
  int packet_overhead;      // The overhead in bytes from IP layer and above.

  NetworkRoute()
      : connected(false),
        local_network_id(0),
        remote_network_id(0),
        last_sent_packet_id(-1),
        packet_overhead(0) {}

  // The route is connected if the local and remote network ids are provided.
  // TODO(zhihuang): Remove this and let the caller set the fields explicitly.
  NetworkRoute(bool connected,
               uint16_t local_net_id,
               uint16_t remote_net_id,
               int last_packet_id)
      : connected(connected),
        local_network_id(local_net_id),
        remote_network_id(remote_net_id),
        last_sent_packet_id(last_packet_id),
        packet_overhead(0) {}

  // |last_sent_packet_id| and |packet_overhead| do not affect the NetworkRoute
  // comparison.
  bool operator==(const NetworkRoute& nr) const {
    return connected == nr.connected &&
           local_network_id == nr.local_network_id &&
           remote_network_id == nr.remote_network_id;
  }

  bool operator!=(const NetworkRoute& nr) const { return !(*this == nr); }
};
}  // namespace rtc

#endif  // RTC_BASE_NETWORKROUTE_H_