Correlation between SOAP Request an response handlers?

[GIBERT Philippe RD-BIZZ-SOP <ph...@francetelecom.com>]

 hi everybody,
My environment: win XP + Axis 1.2
My problem :
 i need to do correlation (storing each req/response pairs and
calculating roundtrip time )
 between SOAP requests from WS client and SOAP Response/Fault from a
Wservice
I think handler could be a solution, but i don't know :
   - If only one handler (intercepting request Flow and just after
response Flow ) can do the job ?
   - If the handler could be deployed globally in the Axis runtime to
intercept all the running web services ?

Any idea or pointer ?

Thanks
philippe