private static void HttpGetAll()
{
    var client = new HttpClient();
    HttpResponseMessage response = client.Get(CONTACTS_URI);

    Console.WriteLine("GET: {0} RESPONSE: {1} \n{2}\n",
                        CONTACTS_URI,
                        response.StatusCode,
                        response.Content.ReadAsString());

    //var contacts = response.Content.ReadAs<Contact[]>();
    //Console.WriteLine("STATICALLY TYPE CONTACTS COUNT: {0}\n", contacts.Length);
}

private static void HttpPost()
{
    var client = new HttpClient();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(MediaTypes.JSON));
    HttpContent jsonContactNew = new StringContent("{\"Id\":0,\"Name\":\"Edward\"}", Encoding.UTF8, MediaTypes.JSON);
    HttpResponseMessage response = client.Post(CONTACTS_URI, jsonContactNew);

    Console.WriteLine("POST (INSERT CONTACT): {0} RESPONSE: {1} \n{2}\n",
                        response.Headers.Location,
                        response.StatusCode,
                        response.Content.ReadAsString());
}

private static void HttpPut()
{
    var client = new HttpClient();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(MediaTypes.JSON));
    HttpContent jsonContactUpdated = new StringContent("{\"Id\":2,\"Name\":\"Ziggy\"}", Encoding.UTF8, MediaTypes.JSON);
    HttpResponseMessage response = client.Put(CONTACTS_URI, jsonContactUpdated);

    Console.WriteLine("POST (UPDATE CONTACT ID 2): {0} RESPONSE: {1}\n",
                        CONTACTS_URI,
                        response.StatusCode);
}

private static void HttpDelete()
{
    var client = new HttpClient();
    const string uri = CONTACTS_URI + "/3";
    HttpResponseMessage response = client.Delete(uri);

    Console.WriteLine("DELETE (CONTACT ID 3): {0} RESPONSE: {1} \n",
                        uri,
                        response.StatusCode);
}

private static void HttpGet()
{
    var client = new HttpClient();
    const string uri = CONTACTS_URI + "/1";
    HttpResponseMessage response = client.Get(uri);

    Console.WriteLine("GET: {0} RESPONSE: {1} \n{2}\n",
                        uri,
                        response.StatusCode,
                        response.Content.ReadAsString());

    //var contact = response.Content.ReadAs<Contact>();
    //Console.WriteLine("STATICALLY TYPE CONTACT: {0}\n", contact);
}