private int ComputeContentLength()
{
int contentLength = 0;
for (int i = 0; i < StartRangeBytes.Length; i++)
{
contentLength += Convert.ToInt32(EndRangeBytes[i] - StartRangeBytes[i]) + 1;
if (IsMultipartRequest)
{
contentLength += MultipartBoundary.Length
+ ResourceMimeType.Length
+ StartRangeBytes[i].ToString().Length
+ EndRangeBytes[i].ToString().Length
+ ResourceLength.ToString().Length
+ 49; // Length needed for multipart header
}
}
if (IsMultipartRequest)
{
contentLength += MultipartBoundary.Length
+ 8; // Length of dash and line break
}
return(contentLength);
}
/// <summary>
/// Send the requested resource to the HTTP response stream.
/// </summary>
private void ReturnChunkedResponse()
{
HttpResponse response = _context.Response;
byte[] buffer = new byte[BufferSize];
using (Stream fs = GetResourceStream())
{
for (int i = 0; i < StartRangeBytes.Length; i++)
{
// Position the stream at the starting byte
fs.Seek(StartRangeBytes[i], SeekOrigin.Begin);
long bytesToReadRemaining = EndRangeBytes[i] - StartRangeBytes[i] + 1;
// Output multipart boundary, if needed
if (IsMultipartRequest)
{
response.Output.Write("--" + MultipartBoundary);
response.Output.Write(String.Format("{0}: {1}", HttpHeaderContentType, ResourceMimeType));
response.Output.Write(String.Format("{0}: bytes {1}-{2}/{3}",
HttpHeaderContentRange,
StartRangeBytes[i].ToString(),
EndRangeBytes[i].ToString(),
ResourceLength.ToString()
)
);
response.Output.WriteLine();
}
// Stream out the requested chunks for the current range request
while (bytesToReadRemaining > 0)
{
if (response.IsClientConnected)
{
int chunkSize = fs.Read(buffer, 0, BufferSize < bytesToReadRemaining ? BufferSize : Convert.ToInt32(bytesToReadRemaining));
response.OutputStream.Write(buffer, 0, chunkSize);
bytesToReadRemaining -= chunkSize;
response.Flush();
#if DEBUG
//Thread.Sleep(DebuggingSleepTime);
#endif
}
else
{
// Client disconnected - quit
return;
}
}
}
}
}