19 lines
495 B
Racket
19 lines
495 B
Racket
#lang syndicate
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(struct echo-req (body) #:prefab)
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(struct echo-resp (body) #:prefab)
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(spawn (field [count 0])
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(on (message (echo-req $body))
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(send! (echo-resp body))
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(count (+ (count) 1))))
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(spawn (on (message (echo-resp $body))
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(printf "Received: ~v\n" body)))
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(spawn* (until (asserted (observe (echo-req _))))
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(until (asserted (observe (echo-resp _))))
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(send! (echo-req 0))
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(send! (echo-req 1))
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(send! (echo-req 2)))
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