Add support for application defined signature algorithms for use with
[openssl.git] / ssl / d1_lib.c
index a94290a..f61f718 100644 (file)
@@ -292,6 +292,15 @@ const SSL_CIPHER *dtls1_get_cipher(unsigned int u)
 
 void dtls1_start_timer(SSL *s)
        {
+#ifndef OPENSSL_NO_SCTP
+       /* Disable timer for SCTP */
+       if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
+               {
+               memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
+               return;
+               }
+#endif
+
        /* If timer is not set, initialize duration with 1 second */
        if (s->d1->next_timeout.tv_sec == 0 && s->d1->next_timeout.tv_usec == 0)
                {
@@ -382,6 +391,7 @@ void dtls1_double_timeout(SSL *s)
 void dtls1_stop_timer(SSL *s)
        {
        /* Reset everything */
+       memset(&(s->d1->timeout), 0, sizeof(struct dtls1_timeout_st));
        memset(&(s->d1->next_timeout), 0, sizeof(struct timeval));
        s->d1->timeout_duration = 1;
        BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0, &(s->d1->next_timeout));
@@ -389,10 +399,28 @@ void dtls1_stop_timer(SSL *s)
        dtls1_clear_record_buffer(s);
        }
 
-int dtls1_handle_timeout(SSL *s)
+int dtls1_check_timeout_num(SSL *s)
        {
-       DTLS1_STATE *state;
+       s->d1->timeout.num_alerts++;
+
+       /* Reduce MTU after 2 unsuccessful retransmissions */
+       if (s->d1->timeout.num_alerts > 2)
+               {
+               s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL);               
+               }
 
+       if (s->d1->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT)
+               {
+               /* fail the connection, enough alerts have been sent */
+               SSLerr(SSL_F_DTLS1_CHECK_TIMEOUT_NUM,SSL_R_READ_TIMEOUT_EXPIRED);
+               return -1;
+               }
+
+       return 0;
+       }
+
+int dtls1_handle_timeout(SSL *s)
+       {
        /* if no timer is expired, don't do anything */
        if (!dtls1_is_timer_expired(s))
                {
@@ -400,20 +428,23 @@ int dtls1_handle_timeout(SSL *s)
                }
 
        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);
+
+       if (dtls1_check_timeout_num(s) < 0)
                return -1;
+
+       s->d1->timeout.read_timeouts++;
+       if (s->d1->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
+               {
+               s->d1->timeout.read_timeouts = 1;
                }
 
-       state->timeout.read_timeouts++;
-       if ( state->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
+#ifndef OPENSSL_NO_HEARTBEATS
+       if (s->tlsext_hb_pending)
                {
-               state->timeout.read_timeouts = 1;
+               s->tlsext_hb_pending = 0;
+               return dtls1_heartbeat(s);
                }
+#endif
 
        dtls1_start_timer(s);
        return dtls1_retransmit_buffered_messages(s);