43 lines
1.3 KiB
Racket
43 lines
1.3 KiB
Racket
#lang minimart
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(require (only-in racket/string string-trim))
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(require "../drivers/tcp.rkt")
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(require "../demand-matcher.rkt")
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(define (spawn-session them us)
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(actor #:name user-session
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(define (send-to-remote fmt . vs)
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(send #:meta-level 1 (tcp-channel us them (string->bytes/utf-8 (apply format fmt vs)))))
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(define (say who fmt . vs)
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(unless (equal? who user) (send-to-remote "~a ~a\n" who (apply format fmt vs))))
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(define user (gensym 'user))
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(send-to-remote "Welcome, ~a.\n" user)
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(advertise (tcp-channel us them ?) #:meta-level 1)
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(subscribe `(,($ who) says ,($ what))
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(say who "says: ~a" what))
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(advertise `(,user says ,?))
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(subscribe (tcp-channel them us ($ bs)) #:meta-level 1
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(send `(,user says ,(string-trim (bytes->string/utf-8 bs)))))
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(observe-advertisers `(,($ who) says ,?)
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#:name present-user-names
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#:set who
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#:added arrived
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#:removed departed
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(for/list [(who arrived)] (say who "arrived."))
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(for/list [(who departed)] (say who "departed.")))
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(observe-advertisers (tcp-channel them us ?) #:meta-level 1
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#:presence remote-present?
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(when (not remote-present?) (quit)))))
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(spawn-tcp-driver)
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(spawn-world
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(spawn-demand-matcher (tcp-channel (?! (tcp-address ? ?)) (?! (tcp-listener 5999)) ?)
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#:meta-level 1
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spawn-session))
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