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Racket-y

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This commit is contained in:
Matthias Felleisen 2014-09-30 09:27:49 -04:00
parent 0c633d91e1
commit 98e9bc7f9c
1 changed files with 3 additions and 7 deletions
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10
pkgs/htdp-pkgs/htdp-lib/2htdp/private/world.rkt
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@ -76,12 +76,8 @@
(define/private (register-with-host)
(define FMT "\nworking off-line\n")
(define FMTtry
(string-append "unable to register with ~a after ~s tries"
FMT))
(define FMTcom
(string-append "unable to register with ~a due to protocol problems"
FMT))
(define FMTtry (string-append "unable to register with ~a after ~s tries" FMT))
(define FMTcom (string-append "unable to register with ~a due to protocol problems" FMT))
;; Input-Port -> [-> Void]
;; create closure (for thread) to receive messages and signal events
(define (RECEIVE in)
@ -101,7 +97,7 @@
(define msg (tcp-receive in))
(cond
[(sexp? msg) (prec msg) RECEIVE] ;; break loop if EOF
[#t (error 'RECEIVE "sexp expected, received: ~e" msg)])))))))
[else (error 'RECEIVE "sexp expected, received: ~e" msg)])))))))
RECEIVE)
;; --- now register, obtain connection, and spawn a thread for receiving
(parameterize ([current-custodian *rec*])