SOAP request/response size in JAX-WS messageContext

Hi [ at ] all,

I'm writing a webservice and I wasn't able to find a jax-ws standard
way to compute the message size, unless I re-serialize it.

I thought that the interceptor which manages the (un)marshalling
should know in some way the request/response size - at least on HTTP:
- does that interceptor(s) store the request/response size somewere?
- are there any drawbacks in exporting that information in the
jax-ws messageContext?

Peace,
R.