connect timeout setting

when I request a non-existent ip address，it will throw connect xxx timeout. so I want to set connect timeout I find we can use { response: xxx, deadline: xxx }, but it will not work well for the connect xxx timeout. eg. { response: 1000, deadline: 60000 } app.get('/httpgetok', function (req, res, next) { setTimeout(() => { res.send('ok'); }, 30000) }); will throw timeout 1000 error，but I just want to use response 1000 to set connect timeout. not response timeout