PHP, SOAP, .NET - Object reference not set to an instance of an object

Question

I have been trying to set up a PHP based SOAP client to connect with another .NET SOAP server, but without any luck. :/ I've tried just about anything I could think of and what uncle Google could find - NuSOAP, Zend Framework SOAP and PHP's internal SOAP. All 3 gave me errors, but PHP's internal SOAP seemed most simple and promising. Well, so I invested another 2 days into PHP's internal SOAP client and at the end I landed with this error:

 SoapFault exception: [soap:Server] System.Web.Services.Protocols.SoapException: Server was unable to process request.  ---> System.NullReferenceException: Object reference not set to an instance of an object.  
 at p_client.p_data.read(PgSqlDataReader e) in c:\\inetpub\\wwwroot\\p_client\\p_client.asmx.cs:line 642  
 at p_client.p_client.p_login(Int32 pid, String username, String password) in c:\\inetpub\\wwwroot\\p_client\\p_client.asmx.cs:line 172  
 --- End of inner exception stack trace --- in /home/techouse/public_html/beta/test/new2_soap_client.php:76  
 Stack trace:  
 #0 /home/techouse/public_html/beta/test/new2_soap_client.php(76): SoapClient->__soapCall('p_login', Array)  
 #1 {main}  

My request XML looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.dhimahi.com/">
    <SOAP-ENV:Body>
        <ns1:p_login>
            <ns1:pid>1234</ns1:pid>
            <ns1:username>username1234</ns1:username>
            <ns1:password>password1234</ns1:password>
        </ns1:p_login>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Any ideas how to fix this?

Answer 1

The error is from the .NET side. The error is thrown when trying to use an object that is null.