uint32_t local_capabilities;
int32_t setup_retries; /* How many times to send setup packets */
int32_t setup_retry_interval; /* Initial timeout for setup packets */
- int32_t wait_timeout; /* How long to wait if setup unsuccessful */
+ int32_t wait_timeout_mean; /* How long to wait if setup unsuccessful */
int32_t mobile_peer_expiry; /* How long to remember 2ary addresses */
int32_t key_lifetime; /* How long a key lasts once set up */
int32_t key_renegotiate_time; /* If we see traffic (or a keepalive)
char *sig;
};
+static int32_t wait_timeout(struct site *st) {
+ int32_t t = st->wait_timeout_mean;
+ int8_t factor;
+ if (t < INT_MAX/2) {
+ st->random->generate(st->random->st,sizeof(factor),&factor);
+ t += (t / 256) * factor;
+ }
+ return t;
+}
+
static _Bool set_new_transform(struct site *st, char *pk)
{
_Bool ok;
} else if (st->local_mobile) {
/* Not very good. We should queue (another) renegotiation
* so that we can update the peer address. */
- st->key_renegotiate_time=st->now+st->wait_timeout;
+ st->key_renegotiate_time=st->now+wait_timeout(st);
} else {
slog(st,LOG_SETUP_INIT,"resolution failed: "
" continuing to use source address of peer's packets");
static void enter_state_run(struct site *st)
{
- slog(st,LOG_STATE,"entering state RUN");
+ slog(st,LOG_STATE,"entering state RUN%s",
+ current_valid(st) ? " (keyed)" : " (unkeyed)");
st->state=SITE_RUN;
st->timeout=0;
static void enter_state_wait(struct site *st)
{
slog(st,LOG_STATE,"entering state WAIT");
- st->timeout=st->now+st->wait_timeout;
+ st->timeout=st->now+wait_timeout(st);
st->state=SITE_WAIT;
set_link_quality(st);
BUF_FREE(&st->buffer); /* will have had an outgoing packet in it */
st->key_lifetime= CFG_NUMBER("key-lifetime", KEY_LIFETIME);
st->setup_retries= CFG_NUMBER("setup-retries", SETUP_RETRIES);
st->setup_retry_interval= CFG_NUMBER("setup-timeout", SETUP_RETRY_INTERVAL);
- st->wait_timeout= CFG_NUMBER("wait-time", WAIT_TIME);
+ st->wait_timeout_mean= CFG_NUMBER("wait-time", WAIT_TIME);
st->mtu_target= dict_read_number(dict,"mtu-target",False,"site",loc,0);
st->mobile_peer_expiry= dict_read_number(