updated doc

diff --git a/doc/cha-gtls-app.texi b/doc/cha-gtls-app.texi
index d592de33b7172988d677e145bef84bfe50782074..91b142f16399a61daf16ec9033ad3c63e2ca776e 100644 (file)
--- a/doc/cha-gtls-app.texi
+++ b/doc/cha-gtls-app.texi
@@ -711,7 +711,10 @@ to decide which direction to check prior to restoring a function call.
 
 Moreover, to prevent blocking from DTLS' retransmission timers to block a
 handshake, the @funcref{gnutls_init} function should be called with the
-@code{GNUTLS_NONBLOCK} flag set (see @ref{Session initialization}).
+@code{GNUTLS_NONBLOCK} flag set (see @ref{Session initialization}). In that
+case, in order to be able to use the DTLS handshake timers, the function
+@funcref{gnutls_dtls_get_timeout} should be used to estimate when to call
+@funcref{gnutls_handshake} if no packets have been received.
 
 
 @node DTLS sessions