System.Net.Mail.SmtpConnection.BeginGetConnection C# (CSharp) Method

        internal IAsyncResult BeginGetConnection(ContextAwareResult outerResult, AsyncCallback callback, object state, string host, int port)
        {
            ConnectAndHandshakeAsyncResult result = new ConnectAndHandshakeAsyncResult(this, host, port, outerResult, callback, state);
            result.GetConnection();
            return result;
        }

        internal IAsyncResult BeginGetConnection(ContextAwareResult outerResult, AsyncCallback callback, object state, string host, int port)
        {
            if (GlobalLog.IsEnabled)
            {
                GlobalLog.Enter("SmtpTransport#" + LoggingHash.HashString(this) + "::BeginConnect");
            }
            IAsyncResult result = null;

            try
            {
                _connection         = new SmtpConnection(this, _client, _credentials, _authenticationModules);
                _connection.Timeout = _timeout;
                if (MailEventSource.Log.IsEnabled())
                {
                    MailEventSource.Log.Associate(this, _connection);
                }
                if (EnableSsl)
                {
                    _connection.EnableSsl          = true;
                    _connection.ClientCertificates = ClientCertificates;
                }

                result = _connection.BeginGetConnection(outerResult, callback, state, host, port);
            }
            catch (Exception innerException)
            {
                throw new SmtpException(SR.MailHostNotFound, innerException);
            }

            if (GlobalLog.IsEnabled)
            {
                GlobalLog.Leave("SmtpTransport#" + LoggingHash.HashString(this) + "::BeginConnect Sync Completion");
            }
            return(result);
        }