C# Async HttpWebRequest Console POC

FunAPI.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
// Assume .NET 4.5

namespace FunAPI
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("This is fun");

            // You can't have an async main, but these async methods want to 
            // propogate out to main.  So main has to be smart.
            // See http://stackoverflow.com/questions/9208921/async-on-main-method-of-console-app
            Task.WaitAll(HaveFun());
        }

        public static async Task HaveFun()
        {
            // There are 2 ways to use await.  Here is the short way.
            string json = await RequestParticipantAsync(37);
            Console.WriteLine(json);
        }

        public static async Task<string> RequestParticipantAsync(int participantId)
        {
            var server = "1234.com";
            var route = string.Format("/participant/{0}/", participantId);
            var protocol = "https://";
            var uri = protocol + server + route;
            var accept = "application/json";
            var auth = "ApiKey humma-numma-na:letters-and-numbers";

            // See http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.aspx
            Console.WriteLine("Request {0}", uri);
            var req = (HttpWebRequest)WebRequest.Create(uri);
            req.Accept = accept;
            req.Headers.Add(HttpRequestHeader.Authorization, auth);

            // Build the Task
            // There are 2 ways to use await.  Here is the long way.
            Task<WebResponse> getResponseTask = req.GetResponseAsync();

            // await suspends (but not blocks) this code
            // See http://msdn.microsoft.com/en-us/library/hh191443.aspx
            WebResponse response = await getResponseTask;
            Console.WriteLine("Content length is {0}", response.ContentLength);
            Console.WriteLine("Content type is {0}", response.ContentType);

            // Use the GetResponseStream to get the content
            // See http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.getresponse.aspx
            Stream stream = response.GetResponseStream();

            StreamReader readStream = new StreamReader(stream, Encoding.UTF8);

            var content = readStream.ReadToEnd();
            response.Close();
            readStream.Close();
            return content;
        }
    }
}