Document/Literal problem with parseResponse()?

Hi all -

I've been having a little trouble getting the nusoap client class to 
work with a .NET web service (postcodeanywhere.co.uk) which uses 
document/literal instead of rpc/encoded.
I began by following the "Using Document Style Messaging" section of 
Dietrich's chapter in "Professional Open Source Web Services".
The first problem was the use of the call() method. I'm not sure if 
that chapter is out of sync with the latest nusoap releases (the 
version I'm using declares itself to be NuSOAP/0.6.8 (1.76)). I was 
passing my XML variable into the call() method in an array:
        $client->call( 'FastAddress', array( $xml ) );

Which was returning a server error. It was also failing to form a valid 
SOAP request: the payload was empty.
So, after looking in nusoap.php I tried it without the array:

        $client->call( 'FastAddress', $xml );

This time it worked! I got the correct response from the server, and my 
request was as I expected. So I'm getting the correct data back from 
the server, and now I have to parse the response to extract my data.
Looking in nusoap.php I see the client member function "parseResponse", 
which "processes SOAP message returned from server". So I try calling 
parseResponse() like so:
    $k = $client->parseResponse( $client->getHeaders(),
                                 $client->responseData );

But, I get an error: "Response not of type text/xml".

Printing $client->responseData shows that it is indeed XML, so I 
printed $client->getHeaders() - but getHeaders() returns nothing. As 
getHeaders() just returns the responseHeaders class variable, it's 
clear that responseHeaders isn't being set.
So I look in the soapclient::send() function to see where 
responseHeaders is set, but couldn't see anything. So I added a line at 
line 5495 like so:
Before:
        $this->request = $http->outgoing_payload;
        $this->response = $http->incoming_payload;

After:
        $this->request = $http->outgoing_payload;
        $this->response = $http->incoming_payload;
        $this->responseHeaders = $http->incoming_headers;

But calling parseResponse as before still gives an error, and 
getHeaders() still returns nothing. So I figure something else is 
overwriting responseHeader in the parseResponse() function. Searching 
in parseResponse() I find the following line (at line 5562):
        // get SOAP headers
        $this->responseHeaders = $parser->getHeaders();

If I comment out this line, suddenly everything works as I would 
expect: parseResponse() now returns an associative array of the results 
from the server.
So: is this a problem with nusoap's handling of document/literal 
requests/responses, or am I being a complete idiot by forcing a square 
peg into a round hole? ;-)
Thanks for your time,

Henry.
--
Henry Todd
Systems Engineer
SpinVox Ltd



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