var options = {
            host: 'google.com',
            port: 80,
            path: '/images/logos/ps_logo2.png'
        };

        var request = http.get(options);

        request.on('response', function (res) {
            res.on('data', function (chunk) {
                fs.writeFile(dir+'image.png', chunk, function (err) {
                    if (err) throw err;
                    console.log('It's saved!');
                });
            });
        });

var http = require('http')
  , fs = require('fs')
  , options

options = {
    host: 'www.google.com'
  , port: 80
  , path: '/images/logos/ps_logo2.png'
}

var request = http.get(options, function(res){
    var imagedata = ''
    res.setEncoding('binary')

    res.on('data', function(chunk){
        imagedata += chunk
    })

    res.on('end', function(){
        fs.writeFile('logo.png', imagedata, 'binary', function(err){
            if (err) throw err
            console.log('File saved.')
        })
    })

})

var fs      = require('fs');
var request = require('request');
// Or with cookies
// var request = require('request').defaults({jar: true});

request.get({url: 'https://someurl/somefile.torrent', encoding: 'binary'}, function (err, response, body) {
  fs.writeFile("/tmp/test.torrent", body, 'binary', function(err) {
    if(err)
      console.log(err);
    else
      console.log("The file was saved!");
  });
});

var http = require('http-request');
var options = {url: 'http://localhost/foo.pdf'};
http.get(options, '/path/to/foo.pdf', function (error, result) {
    if (error) {
        console.error(error);
    } else {
        console.log('File downloaded at: ' + result.file);
    }
});

var http = require('http'),
fs = require('fs'),
options;

options = {
    host: 'www.google.com' ,
    port: 80,
    path: '/images/logos/ps_logo2.png'
}

var request = http.get(options, function(res){

//var imagedata = ''
//res.setEncoding('binary')

var chunks = [];

res.on('data', function(chunk){

    //imagedata += chunk
    chunks.push(chunk)

})

res.on('end', function(){

    //fs.writeFile('logo.png', imagedata, 'binary', function(err){

    var buffer = Buffer.concat(chunks)
    fs.writeFile('logo.png', buffer, function(err){
        if (err) throw err
        console.log('File saved.')
    })

})

const subscriptionKey = 'your_azure_subscrition_key';
const uriBase = // **MUST change your location (mine is 'eastus')**
    'https://eastus.api.cognitive.microsoft.com/vision/v2.0/analyze';

// Request parameters.
const params = {
    'visualFeatures': 'Categories,Description,Adult,Faces',
    'maxCandidates': '2',
    'details': 'Celebrities,Landmarks',
    'language': 'en'
};

const options = {
    uri: uriBase,
    qs: params,
    body: fs.readFileSync(./my_local_image_path.jpg),
    headers: {
        'Content-Type': 'application/octet-stream',
        'Ocp-Apim-Subscription-Key' : subscriptionKey
    }
};

request.post(options, (error, response, body) => {
if (error) {
    console.log('Error: ', error);
    return;
}
let jsonString = JSON.stringify(JSON.parse(body), null, '  ');
body = JSON.parse(body);
if (body.code) // err
{
    console.log("AZURE: " + body.message)
}

console.log('Responsen' + jsonString);