Variations on chat server
This commit is contained in:
parent
4faf189029
commit
31fe2cd92b
|
@ -0,0 +1,38 @@
|
||||||
|
#lang prospect
|
||||||
|
|
||||||
|
(require prospect/actor)
|
||||||
|
(require prospect/drivers/tcp)
|
||||||
|
(require (only-in racket/string string-trim))
|
||||||
|
|
||||||
|
(struct says (who what) #:prefab)
|
||||||
|
(struct present (who) #:prefab)
|
||||||
|
|
||||||
|
(define (spawn-session them us)
|
||||||
|
(actor (define (send-to-remote fmt . vs)
|
||||||
|
(send! (tcp-channel us them (string->bytes/utf-8 (apply format fmt vs)))))
|
||||||
|
|
||||||
|
(define (say who fmt . vs)
|
||||||
|
(unless (equal? who user)
|
||||||
|
(send-to-remote "~a ~a\n" who (apply format fmt vs))))
|
||||||
|
|
||||||
|
(define user (gensym 'user))
|
||||||
|
(send-to-remote "Welcome, ~a.\n" user)
|
||||||
|
|
||||||
|
(until (retracted (advertise (tcp-channel them us _)))
|
||||||
|
(assert (present user))
|
||||||
|
(on (asserted (present $who)) (say who "arrived."))
|
||||||
|
(on (retracted (present $who)) (say who "departed."))
|
||||||
|
|
||||||
|
(on (message (says $who $what)) (say who "says: ~a" what))
|
||||||
|
|
||||||
|
(assert (advertise (tcp-channel us them _)))
|
||||||
|
(on (message (tcp-channel them us $bs))
|
||||||
|
(send! (says user (string-trim (bytes->string/utf-8 bs))))))))
|
||||||
|
|
||||||
|
(actor-body->spawn-action
|
||||||
|
(lambda ()
|
||||||
|
(perform-core-action! (spawn-tcp-driver))
|
||||||
|
(define us (tcp-listener 5999))
|
||||||
|
(forever (assert (advertise (observe (tcp-channel _ us _))))
|
||||||
|
(on (asserted (advertise (tcp-channel $them us _)))
|
||||||
|
(spawn-session them us)))))
|
|
@ -0,0 +1,39 @@
|
||||||
|
#lang prospect
|
||||||
|
|
||||||
|
(require prospect/actor)
|
||||||
|
(require prospect/drivers/tcp)
|
||||||
|
(require (only-in racket/string string-trim))
|
||||||
|
|
||||||
|
(struct says (who what) #:prefab)
|
||||||
|
(struct present (who) #:prefab)
|
||||||
|
|
||||||
|
(define (spawn-session them us)
|
||||||
|
(actor (define (send-to-remote fmt . vs)
|
||||||
|
(send! (tcp-channel us them (string->bytes/utf-8 (apply format fmt vs)))
|
||||||
|
#:meta-level 1))
|
||||||
|
|
||||||
|
(define (say who fmt . vs)
|
||||||
|
(unless (equal? who user)
|
||||||
|
(send-to-remote "~a ~a\n" who (apply format fmt vs))))
|
||||||
|
|
||||||
|
(define user (gensym 'user))
|
||||||
|
(send-to-remote "Welcome, ~a.\n" user)
|
||||||
|
|
||||||
|
(until (retracted (advertise (tcp-channel them us _)) #:meta-level 1)
|
||||||
|
(assert (present user))
|
||||||
|
(on (asserted (present $who)) (say who "arrived."))
|
||||||
|
(on (retracted (present $who)) (say who "departed."))
|
||||||
|
|
||||||
|
(on (message (says $who $what)) (say who "says: ~a" what))
|
||||||
|
|
||||||
|
(assert (advertise (tcp-channel us them _)) #:meta-level 1)
|
||||||
|
(on (message (tcp-channel them us $bs) #:meta-level 1)
|
||||||
|
(send! (says user (string-trim (bytes->string/utf-8 bs))))))))
|
||||||
|
|
||||||
|
(actor-body->spawn-action
|
||||||
|
(lambda ()
|
||||||
|
(perform-core-action! (spawn-tcp-driver))
|
||||||
|
(network (define us (tcp-listener 5999))
|
||||||
|
(forever (assert (advertise (observe (tcp-channel _ us _))) #:meta-level 1)
|
||||||
|
(on (asserted (advertise (tcp-channel $them us _)) #:meta-level 1)
|
||||||
|
(spawn-session them us))))))
|
|
@ -0,0 +1,42 @@
|
||||||
|
#lang prospect
|
||||||
|
|
||||||
|
(require (only-in racket/string string-trim))
|
||||||
|
(require "../drivers/tcp.rkt")
|
||||||
|
(require "../demand-matcher.rkt")
|
||||||
|
|
||||||
|
(define (spawn-session them us)
|
||||||
|
(define user (gensym 'user))
|
||||||
|
(define remote-detector (compile-projection (advertise (?! (tcp-channel ? ? ?)))))
|
||||||
|
(define peer-detector (compile-projection (advertise `(,(?!) says ,?))))
|
||||||
|
(define (send-to-remote fmt . vs)
|
||||||
|
(message (tcp-channel us them (string->bytes/utf-8 (apply format fmt vs)))))
|
||||||
|
(define (say who fmt . vs)
|
||||||
|
(unless (equal? who user) (send-to-remote "~a ~a\n" who (apply format fmt vs))))
|
||||||
|
(list (send-to-remote "Welcome, ~a.\n" user)
|
||||||
|
(spawn/stateless
|
||||||
|
(lambda (e)
|
||||||
|
(match e
|
||||||
|
[(message (tcp-channel _ _ bs))
|
||||||
|
(message `(,user says ,(string-trim (bytes->string/utf-8 bs))))]
|
||||||
|
[(message `(,who says ,what))
|
||||||
|
(say who "says: ~a" what)]
|
||||||
|
[(? patch? p)
|
||||||
|
(if (patch/removed? (patch-project p remote-detector))
|
||||||
|
(quit (send-to-remote "Goodbye!\n"))
|
||||||
|
(let-values (((arrived departed) (patch-project/set/single p peer-detector)))
|
||||||
|
(list (for/list [(who arrived)] (say who "arrived."))
|
||||||
|
(for/list [(who departed)] (say who "departed.")))))]
|
||||||
|
[#f #f]))
|
||||||
|
(patch-seq
|
||||||
|
(sub `(,? says ,?)) ;; read actual chat messages
|
||||||
|
(sub (advertise `(,? says ,?))) ;; observe peer presence
|
||||||
|
(pub `(,user says ,?)) ;; advertise our presence
|
||||||
|
(sub (tcp-channel them us ?)) ;; read from remote client
|
||||||
|
(sub (advertise (tcp-channel them us ?))) ;; monitor remote client
|
||||||
|
(pub (tcp-channel us them ?)) ;; we will write to remote client
|
||||||
|
))))
|
||||||
|
|
||||||
|
(spawn-tcp-driver)
|
||||||
|
(spawn-demand-matcher (advertise (tcp-channel (?!) (?! (tcp-listener 5999)) ?))
|
||||||
|
(observe (tcp-channel (?!) (?! (tcp-listener 5999)) ?))
|
||||||
|
spawn-session)
|
|
@ -0,0 +1,44 @@
|
||||||
|
#lang prospect
|
||||||
|
|
||||||
|
(require (only-in racket/string string-trim))
|
||||||
|
(require "../drivers/tcp.rkt")
|
||||||
|
(require "../demand-matcher.rkt")
|
||||||
|
|
||||||
|
(define (spawn-session them us)
|
||||||
|
(define user (gensym 'user))
|
||||||
|
(define remote-detector (compile-projection (at-meta (?!))))
|
||||||
|
(define peer-detector (compile-projection (advertise `(,(?!) says ,?))))
|
||||||
|
(define (send-to-remote fmt . vs)
|
||||||
|
(message (at-meta (tcp-channel us them (string->bytes/utf-8 (apply format fmt vs))))))
|
||||||
|
(define (say who fmt . vs)
|
||||||
|
(unless (equal? who user) (send-to-remote "~a ~a\n" who (apply format fmt vs))))
|
||||||
|
(list (send-to-remote "Welcome, ~a.\n" user)
|
||||||
|
(spawn/stateless
|
||||||
|
(lambda (e)
|
||||||
|
(match e
|
||||||
|
[(message (at-meta (tcp-channel _ _ bs)))
|
||||||
|
(message `(,user says ,(string-trim (bytes->string/utf-8 bs))))]
|
||||||
|
[(message `(,who says ,what))
|
||||||
|
(say who "says: ~a" what)]
|
||||||
|
[(? patch? p)
|
||||||
|
(if (patch/removed? (patch-project p remote-detector))
|
||||||
|
(quit (send-to-remote "Goodbye!\n"))
|
||||||
|
(let-values (((arrived departed) (patch-project/set/single p peer-detector)))
|
||||||
|
(list (for/list [(who arrived)] (say who "arrived."))
|
||||||
|
(for/list [(who departed)] (say who "departed.")))))]
|
||||||
|
[#f #f]))
|
||||||
|
(patch-seq
|
||||||
|
(sub `(,? says ,?)) ;; read actual chat messages
|
||||||
|
(sub (advertise `(,? says ,?))) ;; observe peer presence
|
||||||
|
(pub `(,user says ,?)) ;; advertise our presence
|
||||||
|
(sub (tcp-channel them us ?) #:meta-level 1) ;; read from remote client
|
||||||
|
(sub (advertise (tcp-channel them us ?)) #:meta-level 1) ;; monitor remote client
|
||||||
|
(pub (tcp-channel us them ?) #:meta-level 1) ;; we will write to remote client
|
||||||
|
))))
|
||||||
|
|
||||||
|
(spawn-tcp-driver)
|
||||||
|
(spawn-world
|
||||||
|
(spawn-demand-matcher (advertise (tcp-channel (?!) (?! (tcp-listener 5999)) ?))
|
||||||
|
(observe (tcp-channel (?!) (?! (tcp-listener 5999)) ?))
|
||||||
|
#:meta-level 1
|
||||||
|
spawn-session))
|
Loading…
Reference in New Issue