setPingThreshold example

        if (null !== ($maxPerSecond = $dsn->getOption('max_per_second'))) {
            $transport->setMaxPerSecond((float) $maxPerSecond);
        }

        if (null !== ($restartThreshold = $dsn->getOption('restart_threshold'))) {
            $transport->setRestartThreshold((int) $restartThreshold, (int) $dsn->getOption('restart_threshold_sleep', 0));
        }

        if (null !== ($pingThreshold = $dsn->getOption('ping_threshold'))) {
            $transport->setPingThreshold((int) $pingThreshold);
        }

        return $transport;
    }

    protected function getSupportedSchemes(): array
    {
        return ['smtp', 'smtps'];
    }
}

new Dsn('ses+smtp', 'default', self::USER, self::PASSWORD, null, ['region' => 'eu-west-1']),
            new SesSmtpTransport(self::USER, self::PASSWORD, 'eu-west-1', null, $logger),
        ];

        yield [
            new Dsn('ses+smtps', 'default', self::USER, self::PASSWORD, null, ['region' => 'eu-west-1']),
            new SesSmtpTransport(self::USER, self::PASSWORD, 'eu-west-1', null, $logger),
        ];

        yield [
            new Dsn('ses+smtps', 'default', self::USER, self::PASSWORD, null, ['region' => 'eu-west-1', 'ping_threshold' => '10']),
            (new SesSmtpTransport(self::USER, self::PASSWORD, 'eu-west-1', null, $logger))->setPingThreshold(10),
        ];

        yield [
            new Dsn('ses+smtp', 'custom.vpc.endpoint', self::USER, self::PASSWORD, null, ['region' => 'eu-west-1']),
            new SesSmtpTransport(self::USER, self::PASSWORD, 'eu-west-1', null, $logger, 'custom.vpc.endpoint'),
        ];

        yield [
            new Dsn('ses+smtps', 'custom.vpc.endpoint', self::USER, self::PASSWORD, null, ['region' => 'eu-west-1']),
            new SesSmtpTransport(self::USER, self::PASSWORD, 'eu-west-1', null, $logger, 'custom.vpc.endpoint'),
        ];
    }

$transport->send(new RawMessage('Message 3'), $envelope);

        $this->assertFalse($stream->isClosed());
    }

    public function testSendDoesPingAboveThreshold()
    {
        $stream = new DummyStream();
        $envelope = new Envelope(new Address('sender@example.org'), [new Address('recipient@example.org')]);

        $transport = new SmtpTransport($stream);
        $transport->setPingThreshold(1);

        $transport->send(new RawMessage('Message 1'), $envelope);
        $transport->send(new RawMessage('Message 2'), $envelope);

        $this->assertNotContains("NOOP\r\n", $stream->getCommands());

        $stream->clearCommands();
        usleep(1500000);

        $transport->send(new RawMessage('Message 3'), $envelope);
        $this->assertContains("NOOP\r\n", $stream->getCommands());
    }

final class SesTransportFactory extends AbstractTransportFactory
{
    public function create(Dsn $dsn): TransportInterface
    {
        $scheme = $dsn->getScheme();
        $region = $dsn->getOption('region');

        if ('ses+smtp' === $scheme || 'ses+smtps' === $scheme) {
            $transport = new SesSmtpTransport($this->getUser($dsn), $this->getPassword($dsn), $region, $this->dispatcher, $this->logger, $dsn->getHost());

            if (null !== $pingThreshold = $dsn->getOption('ping_threshold')) {
                $transport->setPingThreshold((int) $pingThreshold);
            }

            return $transport;
        }

        switch ($scheme) {
            case 'ses+api':
                $class = SesApiAsyncAwsTransport::class;
                // no break             case 'ses':
            case 'ses+https':
                

        $transport = new EsmtpTransport('example.com', 465, true, null, $logger);
        $transport->setRestartThreshold(10, 1);

        yield [
            new Dsn('smtps', 'example.com', '', '', 465, ['restart_threshold' => '10', 'restart_threshold_sleep' => '1']),
            $transport,
        ];

        $transport = new EsmtpTransport('example.com', 465, true, null, $logger);
        $transport->setPingThreshold(10);

        yield [
            new Dsn('smtps', 'example.com', '', '', 465, ['ping_threshold' => '10']),
            $transport,
        ];
    }
}