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;; server bit
(import udp
utf8)
(define host "localhost")
(define port 42069)
(define (main)
(define s (udp-open-socket))
(udp-bind! s #f port)
(let loop ((s s))
(receive (len str host port) (udp-recvfrom s 512)
(when (= len 0)
(loop s))
(print host ":" port "(" len ")\t" str)
(udp-sendto s host port (string-append "received: " str))
(loop s))))
(main)
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