/* also regenerates all_pairs_list */
static void __recalc_pair_prios(struct ice_agent *ag) {
struct ice_candidate_pair *pair;
GList *l;
GQueue nominated, valid, succ, all;
ilog(LOG_DEBUG, "Recalculating all ICE pair priorities");
g_tree_remove_all(&nominated, ag->nominated_pairs);
g_tree_remove_all(&succ, ag->succeeded_pairs);
g_tree_remove_all(&valid, ag->valid_pairs);
g_tree_remove_all(&all, ag->all_pairs);
for (l = ag->candidate_pairs.head; l; l = l->next) {
pair = l->data;
__do_ice_pair_priority(pair);
/* this changes the packets, so we must keep these from being seen as retransmits */
__new_stun_transaction(pair);
}
g_tree_add_all(ag->nominated_pairs, &nominated);
g_tree_add_all(ag->succeeded_pairs, &succ);
g_tree_add_all(ag->valid_pairs, &valid);
g_tree_add_all(ag->all_pairs, &all);
__all_pairs_list(ag);
}
/* agent must be locked */
static struct ice_candidate_pair *__pair_candidate(struct interface_address *addr, struct ice_agent *ag,
struct ice_candidate *cand, struct packet_stream *ps)
{
struct ice_candidate_pair *pair;
if (addr->family != family_from_address(&cand->endpoint.ip46))
return NULL;
pair = g_slice_alloc0(sizeof(*pair));
pair->agent = ag;
pair->remote_candidate = cand;
pair->local_address = addr;
pair->packet_stream = ps;
if (cand->component_id != 1)
PAIR_SET(pair, FROZEN);
__do_ice_pair_priority(pair);
__new_stun_transaction(pair);
g_queue_push_tail(&ag->candidate_pairs, pair);
g_hash_table_insert(ag->pair_hash, pair, pair);
g_tree_insert(ag->all_pairs, pair, pair);
ilog(LOG_DEBUG, "Created candidate pair "PAIR_FORMAT" between %s and %s, type %s", PAIR_FMT(pair),
smart_ntop_buf(&addr->addr), smart_ntop_ep_buf(&cand->endpoint),
ice_candidate_type_str(cand->type));
return pair;
}
/* agent must be locked */
static struct ice_candidate_pair *__pair_candidate(struct stream_fd *sfd, struct ice_agent *ag,
struct ice_candidate *cand)
{
struct ice_candidate_pair *pair;
if (sfd->socket.family != cand->endpoint.address.family)
return NULL;
pair = g_slice_alloc0(sizeof(*pair));
pair->agent = ag;
pair->remote_candidate = cand;
pair->local_intf = sfd->local_intf;
pair->sfd = sfd;
if (cand->component_id != 1)
PAIR_SET(pair, FROZEN);
__do_ice_pair_priority(pair);
__new_stun_transaction(pair);
g_queue_push_tail(&ag->candidate_pairs, pair);
g_hash_table_insert(ag->pair_hash, pair, pair);
g_tree_insert(ag->all_pairs, pair, pair);
ilog(LOG_DEBUG, "Created candidate pair "PAIR_FORMAT" between %s and %s, type %s", PAIR_FMT(pair),
sockaddr_print_buf(&sfd->socket.local.address),
endpoint_print_buf(&cand->endpoint),
ice_candidate_type_str(cand->type));
return pair;
}
static void __nominate_pairs(struct ice_agent *ag) {
GQueue complete;
GList *l;
struct ice_candidate_pair *pair;
ilog(LOG_DEBUG, "Start nominating ICE pairs");
AGENT_SET(ag, NOMINATING);
ZERO(ag->start_nominating);
__get_complete_succeeded_pairs(&complete, ag);
for (l = complete.head; l; l = l->next) {
pair = l->data;
ilog(LOG_DEBUG, "Nominating ICE pair "PAIR_FORMAT, PAIR_FMT(pair));
PAIR_CLEAR(pair, IN_PROGRESS);
PAIR_SET2(pair, NOMINATED, TO_USE);
pair->retransmits = 0;
__new_stun_transaction(pair);
g_queue_push_tail(&ag->triggered, pair);
}
g_queue_clear(&complete);
}