protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if ((this.Credentials != null) && (this.Credentials.GetCredential(request.RequestUri, "Digest") != null))
{
client.SetAuthenticator(new DigestAuthenticator(this.Credentials));
}
var java_uri = request.RequestUri.GetComponents(UriComponents.AbsoluteUri, UriFormat.UriEscaped);
var url = new Java.Net.URL(java_uri);
var body = default(RequestBody);
if (request.Content != null)
{
var bytes = await request.Content.ReadAsByteArrayAsync().ConfigureAwait(false);
var contentType = "text/plain";
if (request.Content.Headers.ContentType != null)
{
contentType = String.Join(" ", request.Content.Headers.GetValues("Content-Type"));
}
body = RequestBody.Create(MediaType.Parse(contentType), bytes);
}
var builder = new Request.Builder()
.Method(request.Method.Method.ToUpperInvariant(), body)
.Url(url);
if (DisableCaching)
{
builder.CacheControl(noCacheCacheControl);
}
var keyValuePairs = request.Headers
.Union(request.Content != null ?
(IEnumerable <KeyValuePair <string, IEnumerable <string> > >)request.Content.Headers :
Enumerable.Empty <KeyValuePair <string, IEnumerable <string> > >());
foreach (var kvp in keyValuePairs)
{
builder.AddHeader(kvp.Key, String.Join(getHeaderSeparator(kvp.Key), kvp.Value));
}
cancellationToken.ThrowIfCancellationRequested();
var rq = builder.Build();
var call = client.NewCall(rq);
// NB: Even closing a socket must be done off the UI thread. Cray!
cancellationToken.Register(() => Task.Run(() => call.Cancel()));
var resp = default(Response);
try {
resp = await call.EnqueueAsync().ConfigureAwait(false);
var newReq = resp.Request();
var newUri = newReq == null ? null : newReq.Uri();
request.RequestUri = new Uri(newUri.ToString());
if (throwOnCaptiveNetwork && newUri != null)
{
if (url.Host != newUri.Host)
{
throw new CaptiveNetworkException(new Uri(java_uri), new Uri(newUri.ToString()));
}
}
} catch (IOException ex) {
if (ex.Message.ToLowerInvariant().Contains("canceled"))
{
throw new OperationCanceledException();
}
throw;
}
var respBody = resp.Body();
cancellationToken.ThrowIfCancellationRequested();
var ret = new HttpResponseMessage((HttpStatusCode)resp.Code());
ret.RequestMessage = request;
ret.ReasonPhrase = resp.Message();
if (respBody != null)
{
var content = new ProgressStreamContent(respBody.ByteStream(), CancellationToken.None);
content.Progress = getAndRemoveCallbackFromRegister(request);
ret.Content = content;
}
else
{
ret.Content = new ByteArrayContent(new byte[0]);
}
var respHeaders = resp.Headers();
foreach (var k in respHeaders.Names())
{
ret.Headers.TryAddWithoutValidation(k, respHeaders.Get(k));
ret.Content.Headers.TryAddWithoutValidation(k, respHeaders.Get(k));
}
return(ret);
}