Where/when is the get request sent in this Node.js basics program?

// Problem: We need a simple way to look at a user's badge count and JavaScript points
// Solution: Use Node.js to connect to Treehouse's API to get profile information to print out

var http = require("http");
var username = "jamiemcdonald";

// Print out error messages
function printError(error) {
  console.error(error.message);
};

function printMessage(username, badgeCount, points) {
  var message = username + " has " + badgeCount + " total badge(s) and " + points + " points in JavaScript";
  console.log(message);
}

// Connect to the API URL (https://teamtreehouse.com/username.json)
var request = http.get("http://teamtreehouse.com/" + username + ".json", function(response) {
  var body = "";
  // Read the data
  response.on('data', function (chunk) {
    body += chunk;
  });
  response.on("end", function() {
    if(response.statusCode === 200) {
      try {
        var profile = JSON.parse(body);
        printMessage(username, profile.badges.length, profile.points.JavaScript)
      } catch(error) {
        // Parse Error
        printError(error);
      }
    } else {
      //Status Code Error
      printError({message: "There was an error getting the profile for " + username + ". (" + http.STATUS_CODES[response.statusCode] + ")"});
    }
  });
  // Parse the data
  // Print the data  
})

// Connection Error
request.on("error", printError);