MailKit.Net.Smtp.SmtpClient.Bdat C# (CSharp) Method

		void Bdat (FormatOptions options, MimeMessage message, CancellationToken cancellationToken, ITransferProgress progress)
		{
			long size;

			using (var measure = new MeasuringStream ()) {
				message.WriteTo (options, measure, cancellationToken);
				size = measure.Length;
			}

			var bytes = Encoding.UTF8.GetBytes (string.Format ("BDAT {0} LAST\r\n", size));

			Stream.Write (bytes, 0, bytes.Length, cancellationToken);

			if (progress != null) {
				var ctx = new SendContext (progress, size);

				using (var stream = new ProgressStream (Stream, ctx.Update)) {
					message.WriteTo (options, stream, cancellationToken);
					stream.Flush (cancellationToken);
				}
			} else {
				message.WriteTo (options, Stream, cancellationToken);
				Stream.Flush (cancellationToken);
			}

			var response = Stream.ReadResponse (cancellationToken);

			switch (response.StatusCode) {
			default:
				throw new SmtpCommandException (SmtpErrorCode.MessageNotAccepted, response.StatusCode, response.Response);
			case SmtpStatusCode.AuthenticationRequired:
				throw new ServiceNotAuthenticatedException (response.Response);
			case SmtpStatusCode.Ok:
				OnMessageSent (new MessageSentEventArgs (message, response.Response));
				break;
			}
		}