/*! * Connect - responseTime * Copyright(c) 2011 TJ Holowaychuk * MIT Licensed */ /** * Adds the `X-Response-Time` header displaying the response * duration in milliseconds. * * @return {Function} * @api public */ module.exports = function responseTime(){ return function(req, res, next){ var writeHead = res.writeHead , start = new Date; if (res._responseTime) return next(); res._responseTime = true; // proxy writeHead to calculate duration res.writeHead = function(status, headers){ var duration = new Date - start; res.setHeader('X-Response-Time', duration + 'ms'); res.writeHead = writeHead; res.writeHead(status, headers); }; next(); };};
/*!
* Connect - responseTime
* Copyright(c) 2011 TJ Holowaychuk
* MIT Licensed
*/
/**
* Adds the `X-Response-Time` header displaying the response
* duration in milliseconds.
*
* @return {Function}
* @api public
*/
module.exports = function responseTime(){
return function(req, res, next){
var writeHead = res.writeHead
, start = new Date;
if (res._responseTime) return next();
res._responseTime = true;
// proxy writeHead to calculate duration
res.writeHead = function(status, headers){
var duration = new Date - start;
res.setHeader('X-Response-Time', duration + 'ms');
res.writeHead = writeHead;
res.writeHead(status, headers);
};
next();
};
};