anchor.diff:  		{timestamp, Timestamp}
   	]},
   	pre_client_connection:send(Client#client_info.connection, tcp,
  -		{response, Id}, ?CHANNEL, PingResponse),
  +		{response, Id}, <<"ping">>, PingResponse),
   	{ok, []};
   
   client_request(_RequestType, _Client, _Id, _Request, _Info) ->
  
positive.code: 
  -include("log.hrl").
  -include("pre_client.hrl").
  
  % Because this saves us _so_ much code.
  -define(CHANNEL, <<"ping">>).
  
  % api
  -export([register_hooks/0]).
  
negative.code: 
  %% @doc The hook which adds the channel to the client.
  client_login_hook(undefined, ClientRecord) ->
  	?debug("Client ~p logged in; registering ~p channel.", [ClientRecord, <<"ping">>]),
  	#client_info{channel_manager = ChannelManager} = ClientRecord,
  	pre_client_channels:set_channel(ChannelManager, <<"ping">>, ?MODULE, []),
  	{ok, undefined}.
  