(if (not (validate-session session)) (begin (display "Invalid session!\n" (current-error-port)) (exit 1)))
(if (not dc-server) (set! dc-server (getenv "DCSERVER")))
(if (not dc-server) (set! dc-server "localhost"))
(if (not (validate-session session)) (begin (display "Invalid session!\n" (current-error-port)) (exit 1)))
(if (not dc-server) (set! dc-server (getenv "DCSERVER")))
(if (not dc-server) (set! dc-server "localhost"))