/* agent must NOT be locked, but call must be locked in R */
static void __do_ice_check(struct ice_candidate_pair *pair) {
struct sockaddr_in6 dst;
struct packet_stream *ps = pair->packet_stream;
struct ice_agent *ag = pair->agent;
u_int32_t prio, transact[3];
if (PAIR_ISSET(pair, SUCCEEDED) && !PAIR_ISSET(pair, TO_USE))
return;
if (!ag->pwd[0].s)
return;
ZERO(dst);
dst.sin6_port = htons(pair->remote_candidate->endpoint.port);
dst.sin6_addr = pair->remote_candidate->endpoint.ip46;
dst.sin6_family = AF_INET6;
prio = ice_priority(ICT_PRFLX, pair->local_address->preference,
pair->remote_candidate->component_id);
mutex_lock(&ag->lock);
pair->retransmit = g_now;
if (!PAIR_SET(pair, IN_PROGRESS)) {
PAIR_CLEAR2(pair, FROZEN, FAILED);
pair->retransmit_ms = STUN_RETRANSMIT_INTERVAL;
pair->retransmits = 0;
}
else if (pair->retransmits > STUN_MAX_RETRANSMITS) {
__fail_pair(pair);
mutex_unlock(&ag->lock);
return;
}
else {
pair->retransmit_ms *= 2;
pair->retransmits++;
}
timeval_add_usec(&pair->retransmit, pair->retransmit_ms * 1000);
__agent_schedule_abs(pair->agent, &pair->retransmit);
memcpy(transact, pair->stun_transaction, sizeof(transact));
pair->was_controlling = AGENT_ISSET(ag, CONTROLLING);
pair->was_nominated = PAIR_ISSET(pair, TO_USE);
mutex_unlock(&ag->lock);
ilog(LOG_DEBUG, "Sending %sICE/STUN request for candidate pair "PAIR_FORMAT" from %s to %s",
PAIR_ISSET(pair, TO_USE) ? "nominating " : "",
PAIR_FMT(pair), smart_ntop_buf(&pair->local_address->addr),
smart_ntop_ep_buf(&pair->remote_candidate->endpoint));
stun_binding_request(&dst, transact, &ag->pwd[0], ag->ufrag,
AGENT_ISSET(ag, CONTROLLING), tie_breaker,
prio, &pair->local_address->addr, ps->sfd->fd.fd,
PAIR_ISSET(pair, TO_USE));
}
/* agent must NOT be locked, but call must be locked in R */
static void __do_ice_check(struct ice_candidate_pair *pair) {
struct stream_fd *sfd = pair->sfd;
struct ice_agent *ag = pair->agent;
u_int32_t prio, transact[3];
if (PAIR_ISSET(pair, SUCCEEDED) && !PAIR_ISSET(pair, TO_USE))
return;
if (!ag->pwd[0].s)
return;
prio = ice_priority(ICT_PRFLX, pair->local_intf->unique_id,
pair->remote_candidate->component_id);
mutex_lock(&ag->lock);
pair->retransmit = g_now;
if (!PAIR_SET(pair, IN_PROGRESS)) {
PAIR_CLEAR2(pair, FROZEN, FAILED);
pair->retransmit_ms = STUN_RETRANSMIT_INTERVAL;
pair->retransmits = 0;
}
else if (pair->retransmits > STUN_MAX_RETRANSMITS) {
__fail_pair(pair);
mutex_unlock(&ag->lock);
return;
}
else {
pair->retransmit_ms *= 2;
pair->retransmits++;
}
timeval_add_usec(&pair->retransmit, pair->retransmit_ms * 1000);
__agent_schedule_abs(pair->agent, &pair->retransmit);
memcpy(transact, pair->stun_transaction, sizeof(transact));
pair->was_controlling = AGENT_ISSET(ag, CONTROLLING);
pair->was_nominated = PAIR_ISSET(pair, TO_USE);
mutex_unlock(&ag->lock);
ilog(LOG_DEBUG, "Sending %sICE/STUN request for candidate pair "PAIR_FORMAT" from %s to %s",
PAIR_ISSET(pair, TO_USE) ? "nominating " : "",
PAIR_FMT(pair), sockaddr_print_buf(&pair->local_intf->spec->local_address.addr),
endpoint_print_buf(&pair->remote_candidate->endpoint));
stun_binding_request(&pair->remote_candidate->endpoint, transact, &ag->pwd[0], ag->ufrag,
AGENT_ISSET(ag, CONTROLLING), tie_breaker,
prio, &sfd->socket,
PAIR_ISSET(pair, TO_USE));
}
static u_int64_t __ice_pair_priority(struct interface_address *ifa, struct ice_candidate *cand,
int controlling)
{
u_int64_t g, d;
g = ice_priority(ICT_HOST, ifa->preference, cand->component_id);
d = cand->priority;
if (!controlling) {
u_int64_t t = g;
g = d;
d = t;
}
return (MIN(g,d) << 32) + (MAX(g,d) << 1) + (g > d ? 1 : 0);
}
static u_int64_t __ice_pair_priority(const struct local_intf *ifa, struct ice_candidate *cand,
int controlling)
{
u_int64_t g, d;
g = ice_priority(ICT_HOST, ifa->unique_id, cand->component_id);
d = cand->priority;
if (!controlling) {
u_int64_t t = g;
g = d;
d = t;
}
return (MIN(g,d) << 32) + (MAX(g,d) << 1) + (g > d ? 1 : 0);
}