/// <summary>
/// Downloads the specified <paramref name="url"/> and calls <paramref name="completeHandler"/>
/// when the download is complete. Makes a GET Request.
/// </summary>
/// <param name="frame">valid frame</param>
/// <param name="url">url to download</param>
/// <param name="completeHandler">Action to be executed when the download is complete.</param>
public static void DownloadUrl(this IFrame frame, string url, Action <IUrlRequest, Stream> completeHandler)
{
if (!frame.IsValid)
{
throw new Exception("Frame is invalid, unable to continue.");
}
//Can be created on any valid CEF Thread, here we'll use the CEF UI Thread
Cef.UIThreadTaskFactory.StartNew(delegate
{
var request = frame.CreateRequest(false);
request.Method = "GET";
request.Url = url;
var memoryStream = new MemoryStream();
var urlRequestClient = Fluent.UrlRequestClient
.Create()
.OnDownloadData((req, stream) =>
{
stream.CopyTo(memoryStream);
})
.OnRequestComplete((req) =>
{
memoryStream.Position = 0;
completeHandler?.Invoke(req, memoryStream);
})
.Build();
var urlRequest = frame.CreateUrlRequest(request, urlRequestClient);
});
}
/// <summary>
/// Downloads the specified <paramref name="url"/> as a <see cref="byte[]"/>.
/// Makes a GET Request.
/// </summary>
/// <param name="frame">valid frame</param>
/// <param name="url">url to download</param>
/// <returns>A task that can be awaited to get the <see cref="byte[]"/> representing the Url</returns>
public static Task <byte[]> DownloadUrlAsync(this IFrame frame, string url)
{
if (!frame.IsValid)
{
throw new Exception("Frame is invalid, unable to continue.");
}
var taskCompletionSource = new TaskCompletionSource <byte[]>();
//Can be created on any valid CEF Thread, here we'll use the CEF UI Thread
Cef.UIThreadTaskFactory.StartNew(delegate
{
var request = frame.CreateRequest(false);
request.Method = "GET";
request.Url = url;
var memoryStream = new MemoryStream();
var urlRequestClient = Fluent.UrlRequestClient
.Create()
.OnDownloadData((req, stream) =>
{
stream.CopyTo(memoryStream);
})
.OnRequestComplete((req) =>
{
if (req.RequestStatus == UrlRequestStatus.Success)
{
taskCompletionSource.TrySetResultAsync(memoryStream.ToArray());
}
else
{
taskCompletionSource.TrySetExceptionAsync(new Exception("RequestStatus:" + req.RequestStatus + ";StatusCode:" + req.Response.StatusCode));
}
})
.Build();
var urlRequest = frame.CreateUrlRequest(request, urlRequestClient);
});
return(taskCompletionSource.Task);
}