private void LoginPop3(bool enableUtf8 = true)
{
var secureSocketOptions = SecureSocketOptions.Auto;
var sslProtocols = SslProtocols.Default;
switch (Account.Encryption)
{
case EncryptionType.StartTLS:
secureSocketOptions = SecureSocketOptions.StartTlsWhenAvailable;
sslProtocols = SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12;
break;
case EncryptionType.SSL:
secureSocketOptions = SecureSocketOptions.SslOnConnect;
sslProtocols = SslProtocols.Tls | SslProtocols.Tls11 | SslProtocols.Tls12;
break;
case EncryptionType.None:
secureSocketOptions = SecureSocketOptions.None;
sslProtocols = SslProtocols.None;
break;
}
Log.Debug("Pop.Connect({0}:{1}, {2})", Account.Server, Account.Port,
Enum.GetName(typeof(SecureSocketOptions), secureSocketOptions));
try
{
Pop.SslProtocols = sslProtocols;
var t = Pop.ConnectAsync(Account.Server, Account.Port, secureSocketOptions, CancelToken);
if (!t.Wait(CONNECT_TIMEOUT, CancelToken))
{
throw new TimeoutException("Pop.ConnectAsync timeout");
}
if (enableUtf8 && (Pop.Capabilities & Pop3Capabilities.UTF8) != Pop3Capabilities.None)
{
Log.Debug("Pop.EnableUTF8");
t = Pop.EnableUTF8Async(CancelToken);
if (!t.Wait(ENABLE_UTF8_TIMEOUT, CancelToken))
{
throw new TimeoutException("Pop.EnableUTF8Async timeout");
}
}
Pop.Authenticated += PopOnAuthenticated;
if (string.IsNullOrEmpty(Account.OAuthToken))
{
Log.Debug("Pop.Authentication({0})", Account.Account);
Pop.AuthenticationMechanisms.Remove("XOAUTH2");
t = Pop.AuthenticateAsync(Account.Account, Account.Password, CancelToken);
}
else
{
Log.Debug("Pop.AuthenticationByOAuth({0})", Account.Account);
t = Pop.AuthenticateAsync(Account.Account, Account.AccessToken, CancelToken);
}
if (!t.Wait(LOGIN_TIMEOUT, CancelToken))
{
Pop.Authenticated -= PopOnAuthenticated;
throw new TimeoutException("Pop.AuthenticateAsync timeout");
}
Pop.Authenticated -= PopOnAuthenticated;
}
catch (AggregateException aggEx)
{
if (aggEx.InnerException != null)
{
throw aggEx.InnerException;
}
throw new Exception("LoginPop3 failed", aggEx);
}
}