gistfile1.js

//Request user data from gravatar
app.get("/gravatar/:email", function (req, res) {
    if (!req.params.email || typeof req.params.email !== "string") {
        res.send(400);
        return;
    }

    var path = "/" + md5(req.params.email.toLowerCase().trim()) + ".json";

    var options = {
      host: 'en.gravatar.com',
      port: 80,
      path: path.toString(),
      method: 'GET'
    };

    console.log(options.host+path);

    var callback = function(response) {
        var str = '';

          //another chunk of data has been recieved, so append it to `str`
          response.on('data', function (chunk) {
            str += chunk;
          });

          //the whole response has been recieved, so we just print it out here
          response.on('end', function () {
            console.log(str);
          });
    };

    http.get(options, callback).end();
});