How can I get the server name for where node.js is running?

Question

I want to add a line that will point to a different database depending on the server I am running node.js on (localhost vs test.com, etc). How do I get the server name in node.js? That is, what is the server side equivalent to location.host?

Answer 1

var os = require('os');
os.hostname();

link

Answer 2

req.headers.host #The request host.

You can refer to Node.js document here.