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What to do when SOAPAction and Default Action Pattern conflict?

From: Katy Warr <katy_warr@uk.ibm.com>
Date: Tue, 4 Oct 2005 21:38:20 +0100
To: public-ws-addressing@w3.org
Message-ID: <OF6F7462C5.C2E3A435-ON80257090.006FAE6C-80257090.00715FDC@uk.ibm.com>
What is the correct behaviour for gen'ing wsa:Action in the client when 
the HTTP 1.1 SOAPAction is set ( i.e. not "") and there is no wsaw:Action 
explicitly specified in the WSDL? 

The problem is that, the default action pattern for wsa:Action cannot be 
gauranteed to generate a wsa:action to match SOAPAction.

Here is an example to illustrate:

<binding name="StockQuoteSoapBinding" type="tns:StockQuotePortType">
  <soap:binding style="document" transport="
http://schemas.xmlsoap.org/soap/http" />
  <wsaw:UsingAddressing wsdl:required="true" />
  <operation name="GetLastTradePrice">
    <soap:operation soapAction="http://example.com/GetLastTradePrice" />
    <input> 
      <soap:body use="literal" />
    </input> 
    <output>
      <soap:body use="literal" />
    </output>
  </operation>
</binding>

If we use the default action pattern to generate the wsa:Action, this is 
the result for the input operation
http://example.com/StockQuotePortType/GetLastTradePriceInput
As this is not  the same as the SOAPAction, this will cause 
non-compliance.  The WSDL in this case is implicitly inconsistent with the 
wsa spec - a problem which will occur in every existing WSDL 1.1 in which 
the values of SOAPAction have not been constructed according to the 
default action pattern.

A possible solution is to set the wsa:Action header to SOAPAction (if 
SOAPAction =! "") in preference to using the default action pattern (if 
the wsa:Action is not specified explicitly).

This would means a change something like this in the wsdl spec:

4.3 Default Action  Pattern for WSDL 1.1
In the absence of the wsa:Action attribute....
==>When using the SOAP 1.1 HTTP binding, if the SOAPAction is set, the 
action for inputs and outputs MUST be the same as this and the default 
action pattern is not used. <==

thanks
Katy
Received on Tuesday, 4 October 2005 20:38:38 GMT

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