broadcast now checks whether port is open before trying to send

Hermes/TODO

@@ -1,15 +1,11 @@
 FEATURES
-5. command(whisper, count, users), message parsable? parse in the client side should do something similar for settings (color, quit)
+5. parser in the client side should do something similar (/color, /quit)
 16. plain tcp -> ssl based 
 17. fix breaks for improper disconnects from clients
 18. Add topics after project completion
 ** regexes to parse strings for different formats -related to 5
-** put into a list if necessary for manipulation
-** sync/timeout to plain sync
 ** align code better for readability
 
-** adjust sleep time on all to be 0.1 for more responsiveness
-** better function names 
 
 GOOD TO HAVE BUT NOT NECESSARY
 7. maybe fiddle around with irc library (we leave this for future opl classes) no time got other classes
@@ -18,7 +14,4 @@ GOOD TO HAVE BUT NOT NECESSARY
 additionally save user details and prompt user to use defaults or create
 new ones
 10. authentication for databases - to avoid dependencies this is left out
-11. user can ask for no of logged in users. - server already reports
-even the list of users connected.
-12. on connection server should also display list of users currently logged in
-** whispers aren't currently logged
+** whispers aren't currently logged - its on purpose

Hermes/client.rkt

@@ -10,8 +10,8 @@
 ;; notes: output may need to be aligned and formatted nicely
 
 
-; i could prompt for these instead
-(define host "10.0.0.160") ; internal home
+; we will  prompt for these in the gui
+(define host "10.0.0.160")
 (define host2 "67.186.191.81")
 (define host3 "localhost")
 (define port-num 4321)
@@ -107,4 +107,4 @@
           (displayln-safe (string-append "Nothing received from server for 2 minutes.") convs-out-s convs-out)]))
 
 (displayln-safe "Starting client." error-out-s error-out)
-(define stop (client 4321))
+(define stop-client (client 4321))

Hermes/server.rkt

@@ -260,8 +260,11 @@
     (cond [(not (null? ((c-messages 'mes-list))))
         (begin (map
                 (lambda (ports)
-                  (displayln (first ((c-messages 'mes-list))) (get-output-port ports))
-                  (flush-output (get-output-port ports)))
+                  (if (not (port-closed? (get-output-port ports)))
+                    (begin 
+                        (displayln (first ((c-messages 'mes-list))) (get-output-port ports))
+                        (flush-output (get-output-port ports)))
+                    (displayln-safe "Failed to broadcast. Port not open." error-out-s error-out)))
                 ((c-connections 'cons-list)))
                (displayln-safe (first ((c-messages 'mes-list))) convs-out-s convs-out)
                ;; remove top message
@@ -269,5 +272,5 @@
                (displayln "Message broadcasted"))])
     (semaphore-post messages-s)))
 
-(define stop (serve 4321)) ;; start server then close with stop
+(define stop-server (serve 4321)) ;; start server then close with stop
 (displayln-safe "Server process started\n" error-out-s error-out)