1 files changed, 43 insertions, 0 deletions
diff --git a/feasibility_analysis/client2.rkt b/feasibility_analysis/client2.rkt
new file mode 100644
index 0000000..47e3052
--- /dev/null
+++ b/feasibility_analysis/client2.rkt
@@ -0,0 +1,43 @@
+#lang racket
+
+;; Both `server' and `accept-and-handle' change
+;; to use a custodian.
+;; To start server
+;; (define stop (client 8080))
+;; use your web browser to connect localhost:8080 greeted with "hello world"
+;; (stop) to close the server
+
+(define (client port-no)
+  (define main-client-cust (make-custodian))
+  (parameterize ([current-custodian main-client-cust])
+    ;; connect to server at port 8080
+    (define-values (in out) (tcp-connect "localhost" port-no)) ;; define values
+      ;; binds to multiple values akin to unpacking tuples in python
+    (thread (lambda ()
+      (send-message in out)
+      (close-input-port in)
+      (close-output-port out))))
+    (sleep 20)
+    ; (define (loop)
+      ; (write (read-line (current-input-port)) out)
+      ; (flush-output out)
+      ; (write (read-line in) (current-output-port))
+    ; (define listener (tcp-listen port-no 5 #t))
+    ; (define (loop)
+      ; (accept-and-handle listener)
+      ; (loop))
+    ; (thread loop)))
+    (custodian-shutdown-all main-client-cust)
+  #| (lambda () |#
+    ; (displayln "Goodbye, shutting down client\n")
+    #| (custodian-shutdown-all main-client-cust)) |#)
+
+(define (send-message input-port output-port)
+ (writeln "Doug: Hello, how's it going?" output-port)
+ (flush-output output-port) ;; ports are buffered in racket must flush or you
+    ;; will read #eof
+ (sleep 10) ;; wait 10 seconds
+ (define serv-message (read-line input-port))
+ (displayln serv-message) ;; read the servers replay message which is original
+    ;; with echo appended to it
+ )