Originally Posted by
fishtoprecords
I'm not sure that you can. ...
I have a copy of "Java Network Programming", in which the author says that java runs on top of tcp/ip - and that it can be a great tool for developing protocols but largely insulates the tcp/ip stack from java programs. I also have a book on IPv6 from Pete Loshin - I do not see the ip stack being exposed in Java anytime soon, though it is possible to get the ip address of the request.
It may be possible for poster to ip but doubt seriously doubt individual packets could be observed before they are re-assembled.