What you want's looks much more complex that you are showing, because this maybe you should look at POE framework for creating event-driven multitasking programs in Perl and your POE Cookbook, where you can see a examples about how to create one Web server.

Using POE has 2 good things, first is easy and second is multi-plataform. To build your server running as server on Win32 you can use POE::Component::Daemon::Win32.

If you are looking just for SOAP, take a look of SOAP::Lite.

Using one of these frameworks, your system will be easier to write and support. Think about this.