@namespace("keybase.1")
protocol reachability {

  enum Reachable {
    UNKNOWN_0,
    YES_1,
    NO_2
  }

  record Reachability {
    Reachable reachable;
  }

  @notify("")
  void reachabilityChanged(Reachability reachability);

  /**
   Start reachability checks and return current status, which
   may be cached.
   */
  Reachability startReachability();

  /**
   Performs a reachability check. This is not a cached response.
   */
  Reachability checkReachability();
}