public async Task<UploadedFileInfo> TransmitFileAsync(RestHost host, string url, UploadedFile file, Action<FileUploadProgress> progressAction,
Action<HttpWebRequest> adjustRequest)
{
ExceptionDispatchInfo capturedException = null;
int totalChunks = (int)Math.Ceiling((double)file.FileData.Length / MAX_CHUNK_SIZE_BYTES);
int currentChunk = 1;
UploadedFileInfo fileResponse = new UploadedFileInfo(file.UploadContext);
using (var rdr = new BinaryReader(file.FileData))
for (var i = currentChunk; i <= totalChunks; i++)
{
FileUploadProgress progress = new FileUploadProgress() { UploadContext = file.UploadContext };
string boundary = Guid.NewGuid().ToString("N");
var chunk = rdr.ReadBytes(MAX_CHUNK_SIZE_BYTES);
var bytesToSend = PrepareDataChunk(chunk, currentChunk, boundary, totalChunks, file);
var request = CreateRequest(host, url, adjustRequest, host.PostTimeout);
request.Method = "POST";
try
{
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.ContentLength = bytesToSend.Length;
using (var requestStream =await request.GetRequestStreamAsync())
{
await requestStream.WriteAsync(bytesToSend, 0, bytesToSend.Length);
requestStream.Close();
}
using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
{
var str = response.GetResponseStream();
}
if (progressAction != null)
progressAction(progress);
currentChunk++;
}
catch (Exception ex)
{
capturedException = ExceptionDispatchInfo.Capture(ex);
}
if (capturedException != null )
{
fileResponse.IsError = true;
fileResponse.Message = capturedException.SourceException.Message;
var webException = capturedException.SourceException as WebException;
if (webException != null )
{
var errorResponse = webException.Response as HttpWebResponse;
if (errorResponse != null && errorResponse.StatusCode == HttpStatusCode.InternalServerError)
{
var resp = await ReadUploadErrorAsync(errorResponse.GetResponseStream());
if (resp != null && resp.error != null)
{
fileResponse.Message = resp.error.message;
}
}
}
}
}
return fileResponse;
}
public UploadedFileInfo TransmitFile(RestHost host, string url, UploadedFile file,Action<FileUploadProgress> progressAction,
Action<HttpWebRequest> adjustRequest)
{
int totalChunks = (int)Math.Ceiling((double)file.FileData.Length / MAX_CHUNK_SIZE_BYTES);
int currentChunk = 1;
UploadedFileInfo fileResponse = new UploadedFileInfo(file.UploadContext);
using (var rdr = new BinaryReader(file.FileData))
for(var i =currentChunk;i<= totalChunks;i++)
{
FileUploadProgress progress = new FileUploadProgress() {UploadContext = file.UploadContext };
string boundary = Guid.NewGuid().ToString("N");
var chunk = rdr.ReadBytes(MAX_CHUNK_SIZE_BYTES);
var bytesToSend = PrepareDataChunk(chunk, currentChunk, boundary, totalChunks, file);
var request = CreateRequest(host, url, adjustRequest, host.PostTimeout);
request.Method = "POST";
try
{
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.ContentLength = bytesToSend.Length;
using (var requestStream = request.GetRequestStream())
{
requestStream.Write(bytesToSend, 0, bytesToSend.Length);
requestStream.Close();
}
using (var response = (HttpWebResponse)request.GetResponse())
{
var stream = response.GetResponseStream();
if (stream != null)
{
using (var reader = new StreamReader(stream))
{
var responseData = reader.ReadToEnd();
if (!string.IsNullOrEmpty(responseData))
{
var uploadResponse = JsonConvert.Deserialize(responseData);
fileResponse.DownloadUrl = uploadResponse.result.downloadUrl;
}
}
}
}
if (progressAction != null)
progressAction(progress);
currentChunk ++;
}
catch (Exception ex)
{
fileResponse.IsError = true;
fileResponse.Message =ex.Message;
var webException = ex as WebException;
if (webException != null)
{
var errorResponse = webException.Response as HttpWebResponse;
if (errorResponse != null && errorResponse.StatusCode == HttpStatusCode.InternalServerError)
{
var resp = ReadUploadError(errorResponse.GetResponseStream());
if (resp != null && resp.error != null)
{
fileResponse.Message = resp.error.message;
}
}
}
}
}
return fileResponse;
}
