[wip] Test proxy before using it

setup/so-whiptail

@@ -588,8 +588,21 @@ whiptail_invalid_input() { # TODO: This should accept a list of arguments to spe
 
 }
 
+whiptail_invalid_proxy() {
+	[ -n "$TESTING" ] && return
+
+	local message
+	read -r -d '' message <<- EOM
+	Could not reach test url using proxy ${so_proxy}. 
+	
+	Check log for details.
+	EOM
+
+	whiptail --title "Security Onion Setup" --msgbox "$message" 10 60
+}
+
 whiptail_invalid_string() {
-		[ -n "$TESTING" ] && return
+	[ -n "$TESTING" ] && return
 	
 	whiptail --title "Security Onion Setup" --msgbox "Invalid input, please try again.\n\nThe $1 cannot contain spaces." 9 45