app.all('*', function (req, res, next) {
res.header('Access-Control-Allow-Origin', '*')
res.header('Access-Control-Allow-Headers', 'Content-Type')
res.header('Access-Control-Allow-Methods', '*')
res.header('Content-Type', 'application/json;charset=utf-8')
next()
})app.set(‘trust proxy’, true)
