internal Task FetchASync(
FetchState fetchState,
INetworkFetcherCallback callback,
CancellationToken token)
{
return(_executorService.Execute(
async() =>
{
try
{
using (var response = await DownloadFrom(fetchState.Uri, MAX_REDIRECTS, token).ConfigureAwait(false))
{
if (response != null)
{
using (var inputStream = await response.Content.ReadAsInputStreamAsync().AsTask().ConfigureAwait(false))
using (var stream = inputStream.AsStreamForRead())
{
callback.OnResponse(stream, -1);
}
}
}
}
catch (Exception e)
{
callback.OnFailure(e);
}
})
.Result);
}
/// <summary>
/// Initiates the network fetch and informs the producer when a
/// response is received via the provided callback.
/// </summary>
/// <param name="fetchState">
/// The fetch-specific state.
/// </param>
/// <param name="callback">
/// The callback used to inform the network fetch producer.
/// </param>
public override void Fetch(
FetchState fetchState,
INetworkFetcherCallback callback)
{
_tasks.Add(fetchState.Id, token => FetchASync(fetchState, callback, token));
fetchState.Context.AddCallbacks(
new BaseProducerContextCallbacks(
() =>
{
bool isCanceled = _tasks.Cancel(fetchState.Id);
if (isCanceled)
{
callback.OnCancellation();
}
},
() => { },
() => { },
() => { }));
}
public override void Fetch(Java.Lang.Object p0, INetworkFetcherCallback p1)
{
RawFetch((global::Com.Facebook.Imagepipeline.Producers.FetchState)p0, p1);
}
/// <summary> /// Initiates the network fetch and informs the producer when /// a response is received via the provided callback. /// </summary> /// <param name="fetchState">The fetch-specific state.</param> /// <param name="callback"> /// The callback used to inform the network fetch producer. /// </param> public abstract void Fetch(FETCH_STATE fetchState, INetworkFetcherCallback callback);
