gzipRequest01.js

var zlib = require('zlib');
var http = require('http');

var headers = {
    "accept-charset": "ISO-8859-1,utf-8;q=0.7,*;q=0.3",
    "accept-language": "en-US,en;q=0.8",
    "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
    "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.13+ (KHTML, like Gecko) Version/5.1.7 Safari/534.57.2",
    "accept-encoding": "gzip,deflate",
};

var options = {
    hostname: "www.google.com",
    // port: 80,
    headers: headers
};

var req = http.request(options, function(res) {
    var body = "";

    res.on('error', function(err) {
        console.log(err);
    });

    var output;
    if (res.headers['content-encoding'] == 'gzip') {
        var gzip = zlib.createGunzip();
        res.pipe(gzip);
        output = gzip;
    } else {
        output = res;
    }

    output.on('data', function(data) {
        data = data.toString('utf-8');
        body += data;
    });

    output.on('end', function() {
        console.log(body);
    });
});

req.on('error', function(err) {
    console.log(err);
})

req.end();