tidied up client.rkt. More stuff to TODO.txt

Hermes/TODO.txt

@@ -6,3 +6,5 @@
 6. keep count of connected clients using object orientation
 7. maybe fiddle around with irc library 
 8. separate main running code from definitions
+9. closure connections, messages, threads. Avoid using set! without an object
+   like make-account

Hermes/client.rkt

@@ -4,15 +4,12 @@
 ;; author: Ibrahim Mkusa
 ;; about: print and read concurrently
 ;; notes: output may need to be aligned and formatted nicely
-;; look into
-;; https://docs.racket-lang.org/gui/text-field_.html#%28meth._%28%28%28lib._mred%2Fmain..rkt%29._text-field~25%29._get-editor%29%29
 
 
 ; custodian for client connections
 (define main-client-cust (make-custodian))
 ; make connection to server
 (define (client port-no)
-  
   (parameterize ([current-custodian main-client-cust])
     ;; connect to server at port 8080
     (define-values (in out) (tcp-connect "localhost" port-no)) ;; define values
@@ -22,8 +19,6 @@
     (displayln "What's your name?")
     (define username (read-line))
 
-  ; (thread (lambda ()
-    ;; make threads 2 lines
     (define a (thread
                 (lambda ()
                   (displayln "Starting receiver thread.")
@@ -46,37 +41,17 @@
     (custodian-shutdown-all main-client-cust))
 
 
-;; the send-messages
+;; sends a message to the server
 (define (send-messages username out)
   ;; intelligent read, quits when user types in "quit"
-  ;(semaphore-wait fair)
-  ; (display usernamei)
   (define input (read-line))
-  ;; do something over here with input maybe send it out
-  
-  ;; Tests input if its a quit then kills all threads
-  ;; An if would be better here tbh
-  ;; (cond ((string=? input "quit") (begin (kill-thread a)
-                                        ;(kill-thread t))))
   (cond ((string=? input "quit") (exit)))
-  ;; modify to send messages to out port 
   (displayln (string-append username ": " input) out)
-  (flush-output out)
+  (flush-output out))
 
-  ;(semaphore-post fair)
-  ; (read-loop-i out)
-)
-
-
-
-;; print hello world continously
-;; "(hello-world)" can be executed as part of background thread
-;; that prints in the event there is something in the input port
+; receives input from server and displays it to stdout
 (define (receive-messages in)
-  ; (sleep (random-integer 0 15)) ;; sleep between 0 and 15 seconds to simulate coms
-                                ;; with server
-  ;(semaphore-wait fair)
-  ;; we will retrieve the line printed below from the server
+  ; retrieve a message from server
   (define evt (sync/timeout 60 (read-line-evt in)))
   (cond [(eof-object? evt)
          (displayln "Server connection closed.")
@@ -86,11 +61,7 @@
         [(string? evt)
          (displayln evt)] ; could time stamp here or to send message
         [else
-          (displayln (string-append "Nothing received from server for 2 minutes."))]
-        )
-  ;(semaphore-post fair)
-) 
+          (displayln (string-append "Nothing received from server for 2 minutes."))]))
 
 (define stop (client 4321))
 (displayln "Client started.")
-