xStation：尝试通过PHP Socket客户端连接SSL服务器

I am having problem in establishing a SSL connection to remote server using PHP socket client.

Connecting to simple socket server is easy but SSL connection is keeping a live and doesn't respond anything, please look at the code below and guide me what mistake I am doing in the following code.

Page is keep loading but doesn't respond anything.

// command array
$command = array(
    'command' => 'login',
    'arguments' => array(
        'userId' => 'xxxxxx',
        'password' => 'xxxxxx',
        'appId' => 'test',
        'appName' => 'test',
    ),
);

$fp = stream_socket_client("ssl://xapia.x-station.eu:5124", $errno, $errstr, 30);

if (!$fp) {
    die("Unable to connect: $errstr ($errno)");
}

/* Turn on encryption for login phase */
fwrite($fp, json_encode($command));

while ($motd = fgets($fp)) {
    echo $motd;
    echo '<hr />';
}

fclose($fp);