The logs for your application make it pretty obvious what's going on - you haven't enabled billing for the app.
The Socket API will be enabled for this application once billing has been enabled in the admin console.
For the record, both of these work fine for me.
libxml_disable_entity_loader(false);
$client = new SoapClient(
'http://www.soapclient.com/xml/SoapResponder.wsdl',
['connection_timeout' => 30]);
print_r($client->Method1('foo', 'bar'));
and
libxml_disable_entity_loader(false);
$client = new SoapClient(
'http://www.soapclient.com/xml/SoapResponder.wsdl',
['connection_timeout' => 30]);
$r = $client->__soapCall('Method1',['foo','bar']);
if (is_soap_fault($r)) {
trigger_error("SOAP Fault: (faultcode: {$r->faultcode}, faultstring: {$r->faultstring})", E_USER_ERROR);
} else {
print_r($r);
}
Both print
Your input parameters are foo and bar