/**@internal Set refresh in range min..max seconds in the future. */
void nua_dialog_usage_set_refresh_range(nua_dialog_usage_t *du,
unsigned min, unsigned max)
{
su_duration_t max_defer = nua_dialog_usage_get_max_defer(du);
unsigned delta;
int make_deferrable = 0;
if (max <= min) {
max = min;
delta = min * 1000;
}
else if (max_defer > 0 && (int)(max - min) >= max_defer / 1000) {
delta = su_randint(min * 1000, max * 1000 - (max_defer + 999));
make_deferrable = 1;
}
else
delta = su_randint(min * 1000, max * 1000);
SU_DEBUG_7(("nua(): refresh %s in %.3f seconds (in [%u..%u]%s)\n",
nua_dialog_usage_name(du), 1e-3 * delta, min, max,
make_deferrable? ", deferrable" : ""));
delta += delta == 0;
nua_dialog_usage_set_refresh_timer(du, delta, make_deferrable);
}
/**@internal Set refresh in range min..max seconds in the future. */
void nua_dialog_usage_set_refresh_range(nua_dialog_usage_t *du,
unsigned min, unsigned max)
{
sip_time_t now = sip_now(), target;
unsigned delta;
if (max < min)
max = min;
if (min != max)
delta = su_randint(min, max);
else
delta = min;
if (now + delta >= now)
target = now + delta;
else
target = SIP_TIME_MAX;
SU_DEBUG_7(("nua(): refresh %s after %lu seconds (in [%u..%u])\n",
nua_dialog_usage_name(du), target - now, min, max));
du->du_refquested = now;
du->du_refresh = target;
}
/** Receive datagram.
*
* @retval -1 error
* @retval 0 end-of-stream
* @retval 1 normal receive (should never happen)
* @retval 2 incomplete recv, call me again (should never happen)
* @retval 3 STUN keepalive, ignore
*/
int tport_recv_dgram(tport_t *self)
{
msg_t *msg;
ssize_t n, veclen, N;
su_addrinfo_t *ai;
su_sockaddr_t *from;
socklen_t fromlen;
msg_iovec_t iovec[msg_n_fragments] = {{ 0 }};
uint8_t sample[1];
/* Simulate packet loss */
if (self->tp_params->tpp_drop &&
(unsigned)su_randint(0, 1000) < self->tp_params->tpp_drop) {
su_recv(self->tp_socket, sample, 1, 0);
SU_DEBUG_3(("tport(%p): simulated packet loss!\n", (void *)self));
return 0;
}
assert(self->tp_msg == NULL);
#if nomore
/* We used to resize the buffer, but it fragments the memory */
N = 65535;
#else
N = (ssize_t)su_getmsgsize(self->tp_socket);
if (N == -1) {
int err = su_errno();
SU_DEBUG_1(("%s(%p): su_getmsgsize(): %s (%d)\n", __func__, (void *)self,
su_strerror(err), err));
return -1;
}
if (N == 0) {
su_recv(self->tp_socket, sample, 1, 0);
SU_DEBUG_3(("tport(%p): zero length packet", (void *)self));
return 0;
}
#endif
veclen = tport_recv_iovec(self, &self->tp_msg, iovec, N, 1);
if (veclen == -1)
return -1;
msg = self->tp_msg;
ai = msg_addrinfo(msg);
from = (su_sockaddr_t *)ai->ai_addr, fromlen = (socklen_t)(ai->ai_addrlen);
n = su_vrecv(self->tp_socket, iovec, veclen, 0, from, &fromlen);
ai->ai_addrlen = fromlen;
if (n == SOCKET_ERROR) {
int error = su_errno();
msg_destroy(msg); self->tp_msg = NULL;
su_seterrno(error);
if (su_is_blocking(error))
return 0;
else
return -1;
}
else if (n <= 1) {
SU_DEBUG_1(("%s(%p): runt of "MOD_ZD" bytes\n",
"tport_recv_dgram", (void *)self, n));
msg_destroy(msg), self->tp_msg = NULL;
return 0;
}
tport_recv_bytes(self, n, n);
SU_CANONIZE_SOCKADDR(from);
if (self->tp_master->mr_dump_file)
tport_dump_iovec(self, msg, n, iovec, veclen, "recv", "from");
*sample = *((uint8_t *)iovec[0].mv_base);
/* Commit received data into buffer. This may relocate iovec contents */
msg_recv_commit(msg, n, 1);
if ((sample[0] & 0xf8) == 0xf8)
/* SigComp */
return tport_recv_comp_dgram(self, self->tp_comp, &self->tp_msg,
from, fromlen);
#if HAVE_SOFIA_STUN
else if (sample[0] == 0 || sample[0] == 1)
/* STUN request or response */
return tport_recv_stun_dgram(self, &self->tp_msg, from, fromlen);
#endif
else
return 0;
}
