Connection timeout forceren

class Swift_Transport_StreamBuffer_SocketTimeoutTest
    extends Swift_Tests_SwiftUnitTestCase
{
    protected $_buffer;

    protected $_server;

    public function setUp()
    {
        $this->_buffer = new Swift_Transport_StreamBuffer(
            $this->_stub('Swift_ReplacementFilterFactory')
            );
    }

    public function skip()
    {
        $serverStarted=false;
        for ($i=0; $i<5; ++$i) {
            $this->_randomHighPort=rand(50000,65000);
            $this->_server = stream_socket_server('tcp://127.0.0.1:' . $this->_randomHighPort);
            if ($this->_server) {
                $serverStarted=true;
            }
        }
        $this->skipUnless(SWIFT_SMTP_HOST,
            'Cannot run test without an SMTP host to connect to (define ' .
            'SWIFT_SMTP_HOST in tests/acceptance.conf.php if you wish to run this test)'
            );
    }

    protected function _initializeBuffer()
    {
        $host = '127.0.0.1';
        $port = $this->_randomHighPort;

        $this->_buffer->initialize(array(
            'type' => Swift_Transport_IoBuffer::TYPE_SOCKET,
            'host' => $host,
            'port' => $port,
            'protocol' => 'tcp',
            'blocking' => 1,
            'timeout' => 1
            ));
    }

    public function testTimeoutException()
    {
        $this->_initializeBuffer();
        $e=null;
        try {
            $line = $this->_buffer->readLine(0);
        } catch (Exception $e) {
        }
        $this->assertIsA($e, 'Swift_IoException', 'IO Exception Not Thrown On Connection Timeout');
        $this->assertPattern('/Connection to .* Timed Out/', $e->getMessage());
    }

    public function tearDown()
    {
        if ($this->_server) {
            stream_socket_shutdown($this->_server, STREAM_SHUT_RDWR);
        }
    }
}