I am new to foswiki. I want to create a topic on foswiki instance running on web server on local machine with data coming from external system. The new topic data will be sent via POST request from external system to this local machine's (server URL) port XXXX. When the data arrives at the port XXXX some how a new topic or update topic (if exist) event should be triggered on foswiki local instance. How can I achieve this?

I understand that I have to use Perl/CGI Sockets for communication between the two machines but when the payload arrives from client to server, how to trigger an event that will cause updation in foswiki local instance?

Are there any tutorials and CPAN APIs available?

The client and server machines are on LAN

I found a post on foswiki forum similar to my task but the code link there is not working https://foswiki.org/Support/Question1221