/// <summary>
/// Will stream a file to the client.
/// </summary>
private void SendFile(Guid requestId, HttpListenerContext context, string file)
{
HttpListenerResponse response = context.Response;
response.SendChunked = true;
response.StatusCode = (int)HttpStatusCode.OK;
response.ContentType = RegistryHelpers.GetContentType(file);
using (Stream local = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read))
{
//
response.ContentLength64 = local.Length;
Stream client = response.OutputStream;
byte[] data = new byte[_chunkSize];
int bytesRead = 0;
DateTime chunkStart;
DateTime start = DateTime.Now;
while (local.Position < local.Length)
{
chunkStart = DateTime.Now;
bytesRead = local.Read(data, 0, _chunkSize);
try
{
client.Write(data, 0, bytesRead);
client.Flush();
// balance of time to wait
ThrottleByteRate(chunkStart);
}
catch (HttpListenerException hle)
{
TraceMessage(requestId,
"Error sending chunk {0}-{1}/{2}. {3}",
local.Position - bytesRead,
local.Position,
local.Length,
hle.Message);
return; // will ab end
}
}
response.Close();
double elapsed = DateTime.Now.Subtract(start).TotalMilliseconds;
TraceMessage(
requestId,
"Request of {1} bytes completed in {0}ms at {2} Kbps.",
elapsed,
local.Length,
(float)local.Length * 8 / 1024 // bytes * (bits per byte) / Kilo
/ (elapsed / 1000)); // divided by milliseconds / (milliseconds per second)
}
}