SOAP Fault ; unable to handle - php

Question

I've got error: Unable to handle request without a valid action parameter.
I want to just login by SOAP server.
My wsdl is here: https://demo.krd.pl/Siddin/2.1/Import.asmx?WSDL
and my code is like:
$client = new SoapClient('https://demo.krd.pl/Siddin/2.1/Import.asmx?WSDL', array(
'location' => 'https://demo.krd.pl/Siddin/2.1/Import.asmx?WSDL',
'trace' => 1,
'exceptions' => true,
'cache_wsdl' => WSDL_CACHE_NONE,
'features' => SOAP_SINGLE_ELEMENT_ARRAYS,
'soap_version' => SOAP_1_2
));
$auth = new stdClass();
$auth->UserName = 'aaa';
$auth->Password = 'bbb';
$auth = new SoapVar($auth, SOAP_ENC_OBJECT, 'complexType', null, 'LoginRequest', 'types');
$result = $client->login($auth);
die(var_dump($result));
As You can see, I want to invoke method 'login' on this SOAP server with parameter LoginRequest - it's described in wsdl file. How do that?

Answer 1

without a valid action parameter.
This means that your php soap client is not able to make up the needed SOAPAction http header. You WSDL defines for login method this:
soapAction="http://Siddin.ServiceContracts/2006/09/Login"
There are a number of reasons possible for it not to add the header, e.g. this one:
'soap_version' => SOAP_1_2,
Try changing it to
'soap_version' => SOAP_1_1,
In case that doesnt resolve it, i recommend you to start general soap debugging by tracing the message being sent (including http headers) and compare it to a working request that you can set up e.g. using SoapUI https://www.soapui.org/