Your post was somewhat incoherent.
I gathered that you have two components, and they communicate with
UDP.  This works well when both components are on the same machine,
however it fails other the network, with a "SocketTimeoutException".
Although, you don't tell us which component (server or client).

Your question then is, how do we communicate between two components
without UDP.

Often, the best way to send data to a "web service" is, of course,
with a HTTP request.  Depending on the complexity of the request, you
can use the built-in java.net.URL class for the simpler ones, or you
may consider using apache's HttpClient class for more complicated
queries.

Hope this helps.