The meaning of SOAPAction is not to say that "this is a stockquote
service" but to say that "I am sending you a SOAP message of a type
that is part of a stock quote service".
okay, fine. but why bother exposing this in the request header at all?
Because it can be hard to deduce from the message - especially as
messages may be composed of many pieces from other places using SOAP's
modular extensibility mechanism (headers). In a sense this is similar to
that a media type can be hard to guess based on the entity alone.
Henrik