The protocol requires a client to trigger the server reply by sending any arbitrary datagram (can be of any lengths and can contain any value). REM: the well known port number is 37 (to write your own server and 1024 to the service number)
REM: លេខច្រកត្រូវបានគេស្គាល់ផងដែរគឺ 37 (ការសរសេរម៉ាស៊ីនបម្រើរបស់អ្នកនិង 1024 ទៅនឹងចំនួនសេវាដែលបាន)