Check if soap:address is defined in the service port (#527)

Author: mvantellingen

CHANGES

@@ -1,5 +1,7 @@
 2.4.0 (unreleased)
 ------------------
+ - Check if soap:address is defined in the service port instead of raising an
+   exception (#527)
 
 
 2.3.0 (2017-08-06)

src/zeep/wsdl/bindings/soap.py

@@ -194,6 +194,9 @@ def process_error(self, doc, operation):
 
     def process_service_port(self, xmlelement, force_https=False):
         address_node = xmlelement.find('soap:address', namespaces=self.nsmap)
+        if address_node is None:
+            logger.debug("No valid soap:address found for service")
+            return
 
         # Force the usage of HTTPS when the force_https boolean is true
         location = address_node.get('location')