The Evolution of SOAP::LITE
Subject:   asynchronous SOAP in Perl
Date:   2007-02-18 20:02:21
From:   ygao0000
Response to: want to implement soap client with asynchronous functionality is there any way to do it in perl

The basic senario is described here:

You can either poll for the response or handle it as a callback.
In the callback case, you need to implement both Sender and Receiver in the Client and Server sides, and may be limited by firewall.