How to provide SOAP API policy/extension requirements in SOAP client

Question

I need to connect to a soap api...I've used the soap api a few times now, but since 99% of the apis are resting now I haven't used them in several years

;

When I call the api using soap client, I get

SOAP-ERROR: Parsing WSDL: Unknown required WSDL extension 'http://schemas.xmlsoap.org/ws/2004/09/policy'</ pre>
<p>So when I open the wsdl address in browser (login/password protected) I can see these lines in the xml output</p>
<pre class="brush:php;toolbar:false;"><wsdl:definitions xmlns:p1="urn:haixin:all2crm" xmlns:wsp="http://schemas.xmlsoap.org/ ws/2004/09/policy" "http://schemas.xmlsoap.org/wsdl/" name="SI_USBPC_REQUEST" targetNamespace="urn:haixin:all2crm">
<wsdl:documentation/>
<wsp:UsingPolicy wsdl:required="true"/>
<wsp:Policy wsu:Id="OP_SI_USBPC_REQUEST"/>

Where I have it

<wsp:Policy>
<wsp:PolicyReference URI="#OP_SI_USBPC_REQUEST"/>
</wsp:Policy>

When I search for this error, I can only find 1 resource in the entire internet where the answer is to turn off the policy requirement, which is: but I don't own the api, so when I search for the policy name OP_SI_USBPC_REQUEST there is no problem, I don't get any results, so I guess this is set by the api owner Some custom names

So my question is should I make the policy and attach it to the soap client request? What is the connection between policy and extensions as I am getting extension missing error but if I turn off the policy requirement it goes away

Is there somewhere I can download the extension? What is the format...should I append them to the soap client request?

Or is it something that should be installed on the server? If I add the extension somehow, will the error go away because I've appended the username/password to the api call, or is this just the first step and I should handle the policy requirement after that?

By the way, I use php to call the api, this is my code

$options = [
        'login' => 'mlogin',
        'password' => 'mypassword',
    ];

    $client = new \SoapClient("http://domain:port/dir/wsdl/?p=sa/92130e1ffa97338ba2d1fc026567031d" , $options );

If I download the xml and turn off the requirement for a local file and use that file address in the soap client, can I use that file to talk to the api? (My understanding is that the xml doesn't contain any actual data, it's just the interface/definition for the soap client and I can't use a local file to talk to the online api, or maybe I'm wrong?)

Answer 1

The message "Unknown required WSDL extension" means SoapClient found an element externally The wsdl:required property of the WSDL namespace is set to true (As you can see here).

So, to avoid this error, one way is to set the wsdl:required property to false.

It is entirely possible to download the WSDL file, modify it and use a local copy. Just make sure to use Absolute path, as shown in here.

By the way, "policy" in this context refers to the WS-Policy specification.