lib/interfaces/restify.js
function restifyRequestHandler(client, config, req, res, next) {
  var listener = {};

  if (isObject(res) && isFunction(res.on) && isFunction(res.removeListener)) {

    listener = function() {

      restifyRequestFinishHandler(client, config, req, res);
      res.removeListener('finish', listener);
    };

    res.on('finish', listener);
  }

  return next();
}
function restifyRequestHandler(client, config, req, res, next) {
  var listener = {};

  if (isObject(res) && isFunction(res.on) && isFunction(res.removeListener)) {

    listener = function() {

      restifyRequestFinishHandler(client, config, req, res);
      res.removeListener('finish', listener);
    };

    res.on('finish', listener);
  }

  return next();
}
function restifyRequestHandler ( client , config , req , res , next ) { var listener = { } ; if ( isObject ( res ) && isFunction ( res . on ) && isFunction ( res . removeListener ) ) { listener = function ( ) { restifyRequestFinishHandler ( client , config , req , res ) ; res . removeListener ( 'finish' , listener ) ; } ; res . on ( 'finish' , listener ) ; } return next ( ) ; }
The restifyRequestHandler attaches the restifyRequestFinishHandler to each
responses 'finish' event wherein the callback function will determine
whether or not the response is an error response or not. The finish event is
used since the restify response object will not have any error information
contained within it until the downstream request handlers have had the
opportunity to deal with the request and create a contextually significant
response.
@function restifyRequestHandler
@param {AuthClient} client - the API client
@param {NormalizedConfigurationVariables} config - the application
configuration
@param {Object} req - the current request
@param {Object} res - the current response
@param {Function} next - the callback function to pass the request onto the
downstream request handlers
@returns {Any} - the result of the next function
The restifyRequestHandler attaches the restifyRequestFinishHandler to each responses finish event wherein the callback function will determine whether or not the response is an error response or not . The finish event is used since the restify response object will not have any error information contained within it until the downstream request handlers have had the opportunity to deal with the request and create a contextually significant response .