/// <summary>
/// Отправка сообщения.
/// </summary>
/// <param name="message"> Сообщение в формате <see cref="MimeMessage" />. </param>
/// <returns> Результат отправки. </returns>
private async Task <SendMailResult> SendMailAsync(MimeMessage message)
{
if (_disposed)
{
throw new ObjectDisposedException(nameof(MailTransport),
"Для экземпляра сервиса Email-сообщений был вызвван метод Dispose()");
}
try
{
await MailTransport.ConnectAsync(
Options.Host,
Options.Port,
GetSecureSocketOptions(Options.EnableSsl));
await MailTransport.AuthenticateAsync(
Options.Login,
Options.Password);
await MailTransport.SendAsync(message);
await MailTransport.DisconnectAsync(true);
return(SendMailResult.CreateSuccessResult());
}
catch (Exception ex)
{
return(SendMailResult.CreateErrorResult(ex));
}
}
private async Task SendMailsAsync(IReadOnlyList <Task <Mail> > produceMailTasks, WritableDataContext dbContext, CancellationToken cancellationToken)
{
try
{
for (int i = 0, n = produceMailTasks.Count; i < n; i++)
{
var mail = await produceMailTasks[i].ConfigureAwait(false);
if (mail.Message != null)
{
if (!_smtpClient.IsConnected)
{
try
{
await _smtpClient.ConnectAsync(_smtpHost, _smtpPort, _smtpSecurity, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex) when(!(ex is OperationCanceledException))
{
var smtpClient = _smtpClient;
_smtpClient = _smtpClientFactory();
smtpClient.Dispose();
throw;
}
if (_smtpCredentials != null)
{
await _smtpClient.AuthenticateAsync(_smtpCredentials, cancellationToken).ConfigureAwait(false);
}
}
await SendMailAsync(dbContext, mail, cancellationToken).ConfigureAwait(false);
}
else if (mail.Error != null)
{
await HandleMailErrorAsync(dbContext, mail, cancellationToken).ConfigureAwait(false);
}
else
{
// we should never get here
throw new InvalidOperationException();
}
}
}
finally
{
if (_smtpClient.IsConnected)
{
await _smtpClient.DisconnectAsync(quit : true, cancellationToken).ConfigureAwait(false);
}
}
}
