+ /* Clear retransmission buffer */
+ dtls1_clear_record_buffer(s);
+ }
+
+int dtls1_handle_timeout(SSL *s)
+ {
+ DTLS1_STATE *state;
+
+ /* if no timer is expired, don't do anything */
+ if (!dtls1_is_timer_expired(s))
+ {
+ return 0;
+ }
+
+ dtls1_double_timeout(s);
+ state = s->d1;
+ state->timeout.num_alerts++;
+ if ( state->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
+ {
+ /* fail the connection, enough alerts have been sent */
+ SSLerr(SSL_F_DTLS1_HANDLE_TIMEOUT,SSL_R_READ_TIMEOUT_EXPIRED);
+ return -1;
+ }
+
+ state->timeout.read_timeouts++;
+ if ( state->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
+ {
+ state->timeout.read_timeouts = 1;
+ }
+
+#ifndef OPENSSL_NO_HEARTBEATS
+ if (s->tlsext_hb_pending)
+ {
+ s->tlsext_hb_pending = 0;
+ return dtls1_heartbeat(s);
+ }
+#endif
+
+ dtls1_start_timer(s);
+ return dtls1_retransmit_buffered_messages(s);