Can both SOAP 1.1 and 1.2 supported by a web service

Question

Looking at below snippet from wsdl -

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"    
xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" 
xmlns:wsx="http://schemas.xmlsoap.org/ws/2004/09/mex" 
xmlns:wsap="http://schemas.xmlsoap.org/ws/2004/08/addressing/policy" 
xmlns:msc="http://schemas.microsoft.com/ws/2005/12/wsdl/contract" 
xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" 
xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" 
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" 
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" 
xmlns:tns="http://tempuri.org/" 
xmlns:wsa10="http://www.w3.org/2005/08/addressing" 
xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" 
xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" 
name="XXXService" targetNamespace="http://tempuri.org/">

I have these questions -

• Because above definition includes both -
  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" and xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"

  Can I safely say that both SOAP 1.1 and 1.2 are supported? or
  do I need to look at service code or any other part of wsdl to confirm this?

• Another question is, when we talk about WSDL version - is it always same as SOAP version?
  So WSDL version 1.1 will be the one used by SOAP 1.1?

Thanks a lot for your time.

Answer 1

For the first question, you need to look inside the WSDL file and see where the soap12 namespace prefix is used. You should find something like <soap12:binding>, <soap12:operation>, <soap12:address>, etc.

Having a SOAP 1.2 namespace declared in the WSDL isn't enough, you need to have XML elements declared in that namespace for it to be useful at something. If you don't have a binding and an address for the soap12 namespace prefix, then your service probably doesn't support it.

For your second question, the WSDL version does not match the SOAP protocol version. You can have WSDL 1.1 with SOAP 1.1 and a binding extension for SOAP 1.2, and you can have WSDL 2.0 with SOAP 1.1 and SOAP 1.2.

You should feed your WSDL to SoapUI and see in how many ways it allows you to call the service (on SOAP 1.1 or on both SOAP 1.1 and SOAP 1.2).