jonathanpeppers

var httpClient = new HttpClient();
string text = await httpClient.GetStringAsync("http://chucknorris.com/");

//NOTE: you can't do this, or you will not get an automatic NSUrlSessionHandler
var httpClient = new HttpClient(new HttpClientHandler
{
    //Some settings
});

jonathanpeppers

//Use this class as a singleton in an IoC container
class MyAppClient
{
  readonly HttpClient _httpClient = new HttpClient();
  
  public async Task<string> GetChuck()
  {
    return await _httpClient.Get("http://chucknorris.com");
  }
}

jonathanpeppers

var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.AcceptEncoding.Add(new StringWithQualityHeaderValue("gzip"));

//Nope, you don't have to even mess with GZipStream
string text = await httpClient.GetAsString("http://chucknorris.com");

//NOTE: but if you need this to work on Windows or non-Xamarin platforms, you will need this ctor for HttpClient
var httpClient = new HttpClient(new HttpClientHandler
{
  AutomaticDecompression = DecompressionMethods.GZip,

jonathanpeppers

//reuse this
private JsonSerializer _serializer = new JsonSerializer();

var response = await _httpClient.GetAsync("http://chucknorris.com/api/dropkick");
response.EnsureSuccessStatusCode();

using (var stream = await response.Content.ReadAsStreamAsync())
using (var reader = new StreamReader(stream))
using (var json = new JsonTextReader(reader))
{

jonathanpeppers

public class JsonContent : HttpContent
{
  private readonly JsonSerializer _serializer = new JsonSerializer();
  private readonly object _value;

  public JsonContent(object value)
  {
    _value = value;
    Headers.ContentType = new MediaTypeHeaderValue("application/gzip");
  }

jonathanpeppers

public class GzipHandler : DelegatingHandler
{
  protected async override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
  {
    if (request.Content != null &&
      request.Content.Headers.ContentType != null &&
      (request.Content.Headers.ContentType.MediaType == "application/gzip" ||
      request.Content.Headers.ContentType.MediaType == "application/deflate"))
    {
      string encodingType = request.Content.Headers.ContentType.MediaType.Split('/').Last();

jonathanpeppers

var connection = new HubConnection("http://yourserver.com/signalr");
await connection.Start(new ServerSentEventsTransport(new NativeHttpClient()));

//And NativeHttpClient
public class NativeHttpClient : DefaultHttpClient
{
  protected override HttpMessageHandler CreateHandler()
  {
    return new NSUrlSessionHandler();
  }

jonathanpeppers

public class NativeHttpClient : IHttpClient
{
  private HttpClient _client;
  private IConnection _connection;

  public void Initialize(IConnection connection)
  {
    _connection = connection;
    _client = new HttpClient();
    _client.Timeout = TimeSpan.FromMilliseconds(-1); //NOTE: infinite timeout because upper SignalR layer handles timeouts

jonathanpeppers

//NOTE: to be used as a singleton in your app
public abstract class PurchaseService
{
    /// <summary>
    /// Retrieves the prices from iTunes or Google Play
    /// </summary>
    public abstract Task<Purchase[]> GetPrices(params string[] ids);

    /// <summary>
    /// Buys an in-app purchase

jonathanpeppers

public class ApplePurchaseService : PurchaseService
{
    public async override Task<Purchase[]> GetPrices(params string[] ids)
    {
        using (var del = new RequestDelegate())
        using (var request = new SKProductsRequest(new NSSet(ids))
        {
            Delegate = del,
        })
        {