anchor.diff:      get_port_server_config(ns_config:get(), PortName).
   
   get_port_server_config(Config, PortName) ->
  -    case ns_config:search_prop_tuple(Config, {node, node(), port_servers},
  +    get_port_server_config(Config, PortName, node()).
  +
  +get_port_server_config(Config, PortName, Node) ->
  +    case ns_config:search_prop_tuple(Config, {node, Node, port_servers},
                                        PortName, false) of
           false -> ns_config:search_prop_tuple(Config, port_servers,
                                                PortName);
  
positive.code: -export([start_link/4, params/1,
           get_port_server_config/1,
           get_port_server_config/2,
           get_port_server_param/3,
           find_param/2]).
  
  %% gen_server callbacks
  
negative.code:     end.
  
  get_port_server_param(Config, PortServerName, ParameterName) ->
      get_port_server_param(Config, PortServerName, ParameterName, node()).
  
  get_port_server_param(Config, PortServerName, ParameterName, Node) ->
      StartArgs =
          case ns_port_server:get_port_server_config(Config,
                                                     PortServerName,
                                                     Node) of
              undefined -> [];
              {PortServerName, _Path, S}       -> S;
              {PortServerName, _Path, S, _Env} -> S
  