use MAKE-ADDRESS to generate return addresses

scheme/httpd/surflets/web-server/root/surflets/admin-handler.scm

@@ -9,7 +9,7 @@
 	)
   (begin
 
-    (define (get-option-change number-field update-text)
+    (define (get-option-change number-field return-address update-text)
       (send-html/suspend
        (lambda (new-url)
 	 `(html 
@@ -25,7 +25,7 @@
 			       (td ,number-field) 
 			       (td ,(make-submit-button "Change")))))
 	    (hr)
-	    (URL ,(string-append new-url "?return=") "Return to main page")))
+	    (URL ,(return-address new-url) "Return to main page")))
 	 )))
 
     (define (handler-options req . maybe-update-text)
@@ -33,11 +33,11 @@
 				 ,(:optional maybe-update-text "")))
 	     (number-field 
 	      (make-number-input-field `(@ ((value ,(options-instance-lifetime))))))
-	     (req (get-option-change number-field update-text))
+	     (return-address (make-address))
+	     (req (get-option-change number-field return-address update-text))
 	     (bindings (get-bindings req)))
-	(format #t "bindings ~s~%" bindings)
 	(cond 
-	 ((assoc "return" bindings)
+	 ((returned-via? return-address bindings)
 	  (return-to-main-page req))
 	 (else
 

scheme/httpd/surflets/web-server/root/surflets/admin-profiling.scm

@@ -21,6 +21,11 @@
       (let* ((update-text (:optional maybe-update-text ""))
 	     (input-field (make-text-input-field gnuplot '(@ (size 20))))
 	     (change-button (make-submit-button "Change"))
+	     (new-profile-address (make-address))
+	     (result-address (make-address))
+	     (reset-address (make-address))
+	     (return-address (make-address))
+	     (reset-return-address (make-address))
 	     (req 
 	      (send-html/suspend
 	       (lambda (new-url)
@@ -31,34 +36,34 @@
 			 (font (@ (color "red")) ,update-text)
 			 (p "Currently, there are " ,counter " profiles saved.")
 			 (ul
-			  (li (URL ,(string-append new-url "?newprofile=")
+			  (li (URL ,(new-profile-address new-url)
 				   "Create new profile")
-			  (li (URL ,(string-append new-url "?result=")
+			  (li (URL ,(result-address new-url)
 				   "Show profile results")
 			      (br)
 			      (servlet-form
 			       ,new-url
 			       (p "This uses " (var "gnuplot") " that is searched at "
 				  ,input-field ,change-button)))
-			  (li (URL ,(string-append new-url "?delete_reset=")
+			  (li (URL ,(reset-address new-url)
 				   "Delete files and reset profile state."))))
 			 (hr)
-			 (URL ,(string-append new-url "?return=") 
+			 (URL ,(return-address new-url) 
 			      "Return to main page leaving profile state untouched.")
 			 (br)
-			 (URL ,(string-append new-url "?reset_return=")
+			 (URL ,(reset-return-address new-url)
 			      "Return to main page reseting profile-state"))))))
 	     (bindings (get-bindings req)))
 	(cond
-	 ((assoc "newprofile" bindings)
+	 ((returned-via? new-profile-address bindings)
 	  (new-profile req))
-	 ((assoc "result" bindings)
+	 ((returned-via? result-address bindings)
 	  (result req))
-	 ((assoc "delete_reset" bindings)
+	 ((returned-via? reset-address bindings)
 	  (reset req))
-	 ((assoc "return" bindings)
+	 ((returned-via? return-address bindings)
-	  (reset req))
+	  (return-to-main-page req))
-	 ((assoc "reset_return" bindings)
+	 ((returned-via? reset-return-address bindings)
 	  (reset-and-return-to-main-page req))
 	 (else
 	  (let ((new-gnuplot-location (with-fatal-error-handler
@@ -81,7 +86,6 @@
       (let ((results (profile-results file-name))
 	    (gnuplot-data-file-name (create-temp-file "servlet-profiling.data"))
 	    (picture-file (create-temp-file "servlet-profiling.picture")))
-	(format #t "results: ~a~%" results)
 	(write-gnuplot-data-file gnuplot-data-file-name 
 				 (lambda (space-info)
 				   (total-bytes (space-info-total space-info)))