Хорошо, после многих игр я понял это:
private void UploadFile(string url, CustomPostDataInfo pdi)
{
// Use the client http stack!
//HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
HttpWebRequest webRequest = (HttpWebRequest)WebRequestCreator.ClientHttp.Create(new Uri(url));
webRequest.AllowWriteStreamBuffering = false; // <-- this enables upload progress reporting!
webRequest.Method = "POST";
webRequest.ContentType = "multipart/form-data; boundary=" + pdi.Boundary; // Boundary only needed for multipart form ada
// Calculate our response length
webRequest.ContentLength = pdi.FormDataHeader.Length + pdi.File2Upload.Length + pdi.FormDataFooter.Length; // Calculate the length of your entire message here, required
pdi.request = webRequest;
webRequest.BeginGetRequestStream(new AsyncCallback(WriteToStreamCallback), pdi);
}
private void WriteToStreamCallback(IAsyncResult asynchronousResult)
{
CustomPostDataInfo pdi = (AmazonS3PostDataInfo)asynchronousResult.AsyncState;
HttpWebRequest webRequest = pdi.request;
Stream requestStream = webRequest.EndGetRequestStream(asynchronousResult);
UTF8Encoding encoding = new UTF8Encoding();
UpdateShowProgress(false, "Uploading file..."); // Your custom update event - make sure to use a Dispatcher to update on the UI thread as this is running on a separate thread.
// Write any pre file data if needed
// ...
// Write our file data
{
// Read chunks of this file
byte[] buffer = new Byte[1024 * 32];
Stream fileStream = pdi.File2Upload.OpenRead();
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, bytesRead);
requestStream.Flush(); // Will block until data is sent
bytesUploaded += bytesRead;
//Show the progress change
UpdateShowProgress(false, "Uploading file...");
}
}
// Write any post file data
// ...
UpdateShowProgress(false, "Uploaded, waiting for response...");
requestStream.Close();
// Get the response from the HttpHandler
webRequest.BeginGetResponse(new AsyncCallback(ReadHttpResponseCallback), webRequest);
}
private void ReadHttpResponseCallback(IAsyncResult asynchronousResult)
{
HttpWebRequest webRequest = (HttpWebRequest)asynchronousResult.AsyncState;
HttpWebResponse webResponse = (HttpWebResponse)webRequest.EndGetResponse(asynchronousResult);
StreamReader reader = new StreamReader(webResponse.GetResponseStream());
string response = reader.ReadToEnd(); // Get the result
reader.Close();
UpdateShowProgress(true, response);
}