32 lines
1.2 KiB
Racket
32 lines
1.2 KiB
Racket
#lang imperative-syndicate
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(require/activate imperative-syndicate/drivers/tcp)
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(require/activate imperative-syndicate/drivers/external-event)
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(require/activate imperative-syndicate/reassert)
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(require (only-in racket/port read-bytes-line-evt))
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(spawn (define id 'chat)
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(define root-facet (current-facet))
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(reassert-on (tcp-connection id (tcp-address "localhost" 5999))
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(retracted (tcp-accepted id))
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(asserted (tcp-rejected id _)))
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(on (asserted (tcp-rejected id $reason))
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(printf "*** ~a\n" (exn-message reason)))
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(during (tcp-accepted id)
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(on-start (printf "*** Connected.\n"))
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(on (retracted (tcp-accepted id)) (printf "*** Remote EOF.\n"))
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;; ^ Not on-stop, because the facet is stopped by local EOF too!
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(on (message (tcp-in id $bs))
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(write-bytes bs)
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(flush-output))
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(define stdin-evt (read-bytes-line-evt (current-input-port) 'any))
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(on (message (inbound (external-event stdin-evt (list $line))))
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(if (eof-object? line)
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(stop-facet root-facet (printf "*** Local EOF. Terminating.\n"))
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(send! (tcp-out id (bytes-append line #"\n")))))))
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