anchor.diff:      ok.
   
   %%------------------------------------------------------------------------------
  -%% Register an reported source address of known peer P. Ignored if P is unknown
  +%% Register a reported source address of known peer P. Ignored if P is unknown
   %%
   %% This is mainly intended to handle cases where a pinging peer and the
   %% pinged peer use different uris (peer uri vs "source" elem in ping obj).
  
positive.code:     %% needed for the ping itself, but given that a ping can quickly
      %% lead to a greater discovery, we should be prepared to handle pings
      %% ourselves at this point.
      await_aehttp(),
      Res = aeu_requests:ping(Peer),
      lager:debug("ping result (~p): ~p", [Peer, Res]),
      case Res of
          {ok, Map} ->
              log_good_ping(Peer#peer.uri),
              Peers = maps:get(<<"peers">>, Map, []),
              add_and_ping_peers(Peers),
              %% [add(P, true) || P <- Peers],
              ok;
          _ ->
              log_ping_error(Peer#peer.uri),
              ok
      end.
  
  %% The gproc name below is registered in the start function of
  
negative.code:         false ->
              lager:debug("will ping peer ~p", [Uri]),
              aec_sync:schedule_ping(Peer, fun ping_peer/1);
          _Other ->
              lager:debug("will not ping ~p (~p)", [Uri, _Other]),
              ignore
  