How to use the Node.js Request module with defaults

request.js

var request = require('request').defaults({
	headers: {
		'X-header1': myvar,
		'Content-Type': 'application/json'
	}
});

// Now request will automatically send the headers specified above on every request.
request.get('http://www.example.com', function(err, resp, body){
  //...
});

// You can also do
var otherTypeOfDefaultRequest = require('request').defaults({
  headers: {
		'Content-Type': 'text/xml'
	}
});

// Will automatically send the headers specified above.
otherTypeOfDefaultRequest.get('http://www.example.com', function(err, resp, body){
    //...
});