SOAP 和 file_get_contents(） 无法从非标准端口检索 wsdl

我正在尝试从以下网络服务中获取一些价格：

http://icelit02.elit.cz:7606/InterCompany-1.10.0/BuyerService?wsdl

使用代码：

$wsdl = 'http://icelit02.elit.cz:7606/InterCompany-1.10.0/BuyerService?wsdl';
$opts = array('http' => array('protocol_version' => '1.0'));
$context = stream_context_create($opts);
$client = new SoapClient($wsdl, array('stream_context' => $context));

var_dump($client->__getFunctions()); 
var_dump($client->__getTypes()); 

它失败并显示：

Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL: Couldn't load from 'http://icelit02.elit.cz:7606/InterCompany-1.10.0/BuyerService?wsdl' : Start tag expected, '<' not found in /home/cererepi/public_html/elit/connect.php:6 Stack trace: #0 /home/cererepi/public_html/elit/connect.php(6): SoapClient->SoapClient('http://icelit02...', Array) #1 {main} thrown in /home/cererepi/public_html/elit/connect.php on line 6

我试图在该地址获取 xml

$xmlfile = file_get_contents ( 'http://icelit02.elit.cz:7606/InterCompany-1.10.0/BuyerService?wsdl' );

同样，失败，没有错误，但有一个空字符串。