Help! Server logs successfully to the console but no response on localhost.

var Profile = require("./profile.js");
var renderer = require("./renderer.js");
var querystring = require("querystring");

//file header
var commonHeader = {'content-type': 'text/html'};

//Handle HTTP route GET / and POST / i.e. Home
function home(request, response) {
  //if url == "/" && GET
  if(request.url === "/") {

      if(request.method.toLowerCase === "get") {
        //show search
        response.writeHead(200, commonHeader);  
        renderer.view("header", {}, response);
        renderer.view("search", {}, response);
        renderer.view("footer", {}, response);
        response.end();
    } else {

        //if url == "/" && POST

        //get the post data from the body
        request.on("data", function(postBody) {
              //extract the username
        var query = querystring.parse(postBody.toString());
            response.write(query.username);
            response.end();
            //redirect to /:username
        });  

    }
  }
}


//Handle HTTP route GET /:username i.e. /chalkers
function user(request, response) {
  //if url == "/...."
  var username = request.url.replace("/", "");
  if(username.length > 0) {
    response.writeHead(200, commonHeader);  
    renderer.view("header", {}, response);    

    //get json from Treehouse
    var studentProfile = new Profile(username);
    //on "end"
    studentProfile.on("end", function(profileJSON){
      //show profile

      //Store the values which we need
      var values = {
        avatarURL: profileJSON.gravatar_url, 
        username: profileJSON.profile_name,
        badges: profileJSON.badges.length,
        javascriptPoints: profileJSON.points.JavaScript
      }
      //Simple response
      renderer.view("profile", values, response);
      renderer.view("footer", {}, response);
      response.end();
    });

    //on "error"
    studentProfile.on("error", function(error){
      //show error
      renderer.view("error", {errorMessage: error.message}, response);
      renderer.view("search", {}, response);
      renderer.view("footer", {}, response);
      response.end();
    });

  }
}

//export routes to app.js]
module.exports.home = home;
module.exports.user = user;