SoapServer can't return a header unless one is sent

[Harlan Iverson <hjiverson@plauditdesign.com>]

Hello,

I finally got soap headers to work (yay!), but I can't figure out how to 
send a header that I didn't receive, since receiving a header seems to 
be what invokes the magic function.

For example, I had a sessionId header. The client makes its first call 
and doesn't not yet have a session initiated. I want the server to 
always send a sessionId header, whether it received one or not.

Here is a small reproduction. Comment/uncomment the soapenv:Header to 
see what I am talking about:


***** test.php *****

<?php

ini_set("soap.wsdl_cache_enabled", 0);


$request = <<<REQUEST
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope 
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"; 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>

<!--
<soapenv:Header><ns1:sessionId 
soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next"; 
soapenv:mustUnderstand="0" xsi:type="soapenc:string" 
xmlns:ns1="http://xml.apache.org/axis/session"; 
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>THIS IS CLIENT 
SESSION!</ns1:sessionId></soapenv:Header>
-->

<soapenv:Body><ns2:getProduct 
soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; 
xmlns:ns2="urn:com.plauditdesign.shoppingcart.client#"><productId 
href="#id0"/></ns2:getProduct><multiRef id="id0" soapenc:root="0" 
soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; 
xsi:type="xsd:int" 
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";>236</multiRef></soapenv:Body></soapenv:Envelope>
REQUEST;



class CatalogFacade {
	public function sessionId( $id ) {
		echo "<!-- sessionId! $id -->";
		return "FROM SERVER: $id";
	}

	public function getProduct( $id ) {
		return "PRODUCT $id";
	}
}


$server = new SoapServer( "CatalogFacade.wsdl" );
$server->setClass( "CatalogFacade");
$server->handle( $request );


?>



***** CatalogFacade.wsdl *****

<?xml version="1.0" encoding="utf-8"?>
<definitions name="shoppingcart"
	xmlns="http://schemas.xmlsoap.org/wsdl/";
	xmlns:tns="urn:com.plauditdesign.shoppingcart.client#" 
targetNamespace="urn:com.plauditdesign.shoppingcart.client#"
	xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";
	xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
	xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";
	xmlns:xs="http://www.w3.org/2001/XMLSchema";
	
	xmlns:axis-session="http://xml.apache.org/axis/session";
	
	xmlns:types="urn:com.plauditdesign.shoppingcart.client.types#">
	<!-- all datatypes will be imported to namespace types: -->
	<types>
		
		
        <schema xmlns="http://www.w3.org/2001/XMLSchema";
                targetNamespace="http://xml.apache.org/axis/session";>
                <element name="sessionId" type="xs:string"/>
        </schema>
	
		
	</types>

	<!-- Obviously, the value for @location is wrong!
	<import namespace="urn:com.plauditdesign.shoppingcart.client#"
	location='http://www.example.org/schema/sample.xsd'/>
	-->
	
	
        <message name="sessionIdRequest">
                <part name="sessionId" element="axis-session:sessionId"/>
        </message>
        <message name="sessionIdResponse">
                <part name="sessionId" element="axis-session:sessionId"/>
        </message>


	<message name="getProduct-request">
		<part name="productId" type="xs:int"/>
	</message>
	<message name="getProduct-response">
		<part name="result" type="xs:string"/>
	</message>

	<portType name="catalog-porttype">
	
		<operation name="getProduct" parameterOrder="productId">
			<input name="getProduct-request" message="tns:getProduct-request"/>
			<output name="getProduct-response" message="tns:getProduct-response"/>
		</operation>
	</portType>

	<!-- @type doesn't like tns: -->
	<binding name="catalog-binding" type="tns:catalog-porttype">
		<!--
		<soap:binding style="document"
			transport="http://schemas.xmlsoap.org/soap/http"/>
		-->
		<soap:binding style="rpc"
			transport="http://schemas.xmlsoap.org/soap/http"/>
		
		
		<operation name="getProduct">
			<soap:operation 
soapAction="urn:com.plauditdesign.shoppingcart.client.CatalogFacade#getProduct"/>
			<input>
				<soap:body use="encoded" 
namespace="urn:com.plauditdesign.shoppingcart.client#" 
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
				<soap:header message="tns:sessionIdRequest" part="sessionId" 
use="encoded" encodingStyle="http://www.w3.org/2003/05/soap-encoding"/>
				
			</input>
			<output>
				<soap:body use="encoded" 
namespace="urn:com.plauditdesign.shoppingcart.client#" 
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
				<soap:header message="tns:sessionIdResponse" part="sessionId" 
use="encoded" encodingStyle="http://www.w3.org/2003/05/soap-encoding"/>
				
			</output>
		</operation>
		
	</binding>

	<service name="catalog">
		<!-- @binding doesn't like to be tns: -->
		<port name="catalog-port" binding="tns:catalog-binding">
			<soap:address 
location="http://admin.plauditdesign.com/zencart/webservice/soap-index.php?server=Catalog"/>
		</port>
	</service>

</definitions>


Thanks!
Harlan

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