/// <summary>
/// Initializes a new instance of the <see cref="MultipartAsyncContext"/> class.
/// </summary>
/// <param name="contentStream">The content stream.</param>
/// <param name="taskCompletionSource">The task completion source.</param>
/// <param name="mimeParser">The MIME parser.</param>
/// <param name="data">The buffer that we read data from.</param>
public MultipartAsyncContext(Stream contentStream, TaskCompletionSource<IEnumerable<HttpContent>> taskCompletionSource, MimeMultipartBodyPartParser mimeParser, byte[] data)
{
Contract.Assert(contentStream != null, "contentStream cannot be null");
Contract.Assert(taskCompletionSource != null, "task cannot be null");
Contract.Assert(mimeParser != null, "mimeParser cannot be null");
Contract.Assert(data != null, "data cannot be null");
ContentStream = contentStream;
Result = new List<HttpContent>();
TaskCompletionSource = taskCompletionSource;
MimeParser = mimeParser;
Data = data;
}
public static Task<IEnumerable<HttpContent>> ReadAsMultipartAsync(this HttpContent content, IMultipartStreamProvider streamProvider, int bufferSize)
{
if (content == null)
{
throw new ArgumentNullException("content");
}
if (streamProvider == null)
{
throw new ArgumentNullException("streamProvider");
}
if (bufferSize < MinBufferSize)
{
throw new ArgumentOutOfRangeException("bufferSize", bufferSize, RS.Format(Properties.Resources.ArgumentMustBeGreaterThanOrEqualTo, MinBufferSize));
}
return content.ReadAsStreamAsync().Then(stream =>
{
TaskCompletionSource<IEnumerable<HttpContent>> taskCompletionSource = new TaskCompletionSource<IEnumerable<HttpContent>>();
MimeMultipartBodyPartParser parser = new MimeMultipartBodyPartParser(content, streamProvider);
byte[] data = new byte[bufferSize];
MultipartAsyncContext context = new MultipartAsyncContext(stream, taskCompletionSource, parser, data);
// Start async read/write loop
MultipartReadAsync(context);
// Return task and complete later
return taskCompletionSource.Task;
});
}