PR: 1997

[openssl.git] / ssl / d1_lib.c

diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c
index 6450c1de850b2d3e63b7b1dac2e902c43b9f7153..8039740555f2b388168a3250a277da20e237a62d 100644 (file)
--- a/ssl/d1_lib.c
+++ b/ssl/d1_lib.c
@@ -188,6 +188,29 @@ void dtls1_clear(SSL *s)
                s->version=DTLS1_VERSION;
        }
 
+long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg)
+       {
+       int ret=0;
+
+       switch (cmd)
+               {
+       case DTLS_CTRL_GET_TIMEOUT:
+               if (dtls1_get_timeout(s, (struct timeval*) parg) != NULL)
+                       {
+                       ret = 1;
+                       }
+               break;
+       case DTLS_CTRL_HANDLE_TIMEOUT:
+               ret = dtls1_handle_timeout(s);
+               break;
+
+       default:
+               ret = ssl3_ctrl(s, cmd, larg, parg);
+               break;
+               }
+       return(ret);
+       }
+
 /*
  * As it's impossible to use stream ciphers in "datagram" mode, this
  * simple filter is designed to disengage them in DTLS. Unfortunately
@@ -295,6 +318,36 @@ void dtls1_stop_timer(SSL *s)
        BIO_ctrl(SSL_get_rbio(s), BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT, 0, &(s->d1->next_timeout));
        }
 
+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_READ_FAILED,SSL_R_READ_TIMEOUT_EXPIRED);
+               return 0;
+               }
+
+       state->timeout.read_timeouts++;
+       if ( state->timeout.read_timeouts > DTLS1_TMO_READ_COUNT)
+               {
+               state->timeout.read_timeouts = 1;
+               }
+
+       dtls1_start_timer(s);
+       return dtls1_retransmit_buffered_messages(s);
+       }
+
 static void get_current_time(struct timeval *t)
 {
 #ifdef OPENSSL_SYS_WIN32