process.env.http_proxy

var http = require("http");

var options = {
  host: "proxy",
  port: 8080,
  path: "http://www.google.com",
  headers: {
    Host: "www.google.com"
  }
};
http.get(options, function(res) {
  console.log(res);
  res.pipe(process.stdout);
});


process.env.https_proxy

var http = require('http');

http.get ({
    host: '127.0.0.1',
    port: 8888,
    path: 'https://www.google.com/accounts/OAuthGetRequestToken'
}, function (response) {
    console.log (response);
});