async Task<WebRequestStream> CreateBody (HttpRequestMessage request, CFHTTPMessage message,
CancellationToken cancellationToken)
{
if (request.Content == null)
return null;
/*
* There are two ways of sending the body:
*
* - CFHTTPMessageSetBody() sets the full body contents
* We use this by default.
*
* - CFReadStreamCreateForStreamedHTTPRequest() should be used
* if the body is too large to fit in memory. It also uses
* chunked transfer encoding.
*
* We use this if the user either gave us a StreamContent, or we
* don't have any Content-Length, so we'll have to use chunked
* transfer anyways.
*
*/
var length = request.Content.Headers.ContentLength;
if ((request.Content is StreamContent) || (length == null)) {
var stream = await request.Content.ReadAsStreamAsync ().ConfigureAwait (false);
return new WebRequestStream (stream, cancellationToken);
}
var text = await request.Content.ReadAsByteArrayAsync ().ConfigureAwait (false);
message.SetBody (text);
return null;
}
