> Are there well known issues about this kind of architecture,
> that is a
> WS framework to integrate locally legacy code?
> Would it be simpler, faster (?) to use a local transport instead
> of
> HTTP?
AFAIK, Sun JWSDP supports only HTTP as transport protocol.
Other vendors' implementations offers other protocols, like JMS.
Anyway, I'm not sure about what kind of architecture best fit your needs.