int test_udp(void)
{
struct udp_sock *uss2;
struct udp_test *ut;
int err;
ut = mem_zalloc(sizeof(*ut), destructor);
if (!ut)
return ENOMEM;
err = sa_set_str(&ut->cli, "127.0.0.1", 0);
err |= sa_set_str(&ut->srv, "127.0.0.1", 0);
if (err)
goto out;
err = udp_listen(&ut->usc, &ut->cli, udp_recv_client, ut);
err |= udp_listen(&ut->uss, &ut->srv, udp_recv_server, ut);
if (err)
goto out;
udp_rxbuf_presz_set(ut->uss, 16);
err = udp_local_get(ut->usc, &ut->cli);
err |= udp_local_get(ut->uss, &ut->srv);
if (err)
goto out;
err = udp_register_helper(&ut->uh, ut->usc, 0,
udp_helper_send, udp_helper_recv, ut);
if (err)
goto out;
/* expect failure */
if (!udp_listen(&uss2, &ut->srv, udp_recv_client, ut)) {
err = EBUSY;
goto out;
}
/* Send from connected client UDP socket */
err = udp_connect(ut->usc, &ut->srv);
if (err)
goto out;
/* Start test */
err = send_data(ut->usc, &ut->srv, data0);
if (err)
goto out;
err = re_main_timeout(100);
if (err)
goto out;
if (ut->err)
err = ut->err;
out:
mem_deref(ut);
return err;
}
int dns_server_alloc(struct dns_server **srvp, bool rotate)
{
struct dns_server *srv;
int err;
if (!srvp)
return EINVAL;
srv = mem_zalloc(sizeof(*srv), destructor);
if (!srv)
return ENOMEM;
err = sa_set_str(&srv->addr, "127.0.0.1", LOCAL_PORT);
if (err)
goto out;
err = udp_listen(&srv->us, &srv->addr, udp_recv, srv);
if (err)
goto out;
err = udp_local_get(srv->us, &srv->addr);
if (err)
goto out;
srv->rotate = rotate;
out:
if (err)
mem_deref(srv);
else
*srvp = srv;
return err;
}
static int media_alloc(struct mnat_media **mp, struct mnat_sess *sess,
int proto, void *sock1, void *sock2,
struct sdp_media *sdpm)
{
struct mnat_media *m;
struct sa laddr;
struct pcp_map map;
unsigned i;
int err = 0;
if (!mp || !sess || !sdpm || proto != IPPROTO_UDP)
return EINVAL;
m = mem_zalloc(sizeof(*m), media_destructor);
if (!m)
return ENOMEM;
m->compc = sock2 ? 2 : 1;
list_append(&sess->medial, &m->le, m);
m->sess = sess;
m->sdpm = mem_ref(sdpm);
for (i=0; i<m->compc; i++) {
struct comp *comp = &m->compv[i];
comp->id = i+1;
comp->media = m;
err = udp_local_get(i==0 ? sock1 : sock2, &laddr);
if (err)
goto out;
rand_bytes(map.nonce, sizeof(map.nonce));
map.proto = proto;
map.int_port = sa_port(&laddr);
/* note: using same address-family as the PCP server */
sa_init(&map.ext_addr, sa_af(&pcp_srv));
info("pcp: %s: internal port for %s is %u\n",
sdp_media_name(sdpm),
i==0 ? "RTP" : "RTCP",
map.int_port);
err = pcp_request(&comp->pcp, NULL, &pcp_srv, PCP_MAP,
LIFETIME, &map, pcp_resp_handler, comp, 0);
if (err)
goto out;
}
out:
if (err)
mem_deref(m);
else if (mp) {
*mp = m;
}
return err;
}
int allocation_create(struct allocator *allocator, unsigned ix, int proto,
const struct sa *srv,
const char *username, const char *password,
struct tls *tls, bool turn_ind,
allocation_h *alloch, void *arg)
{
struct allocation *alloc;
struct sa laddr;
int err;
if (!allocator || !proto || !srv)
return EINVAL;
sa_init(&laddr, sa_af(srv));
alloc = mem_zalloc(sizeof(*alloc), destructor);
if (!alloc)
return ENOMEM;
list_append(&allocator->allocl, &alloc->le, alloc);
(void)gettimeofday(&alloc->sent, NULL);
alloc->atime = -1;
alloc->ix = ix;
alloc->allocator = allocator;
alloc->proto = proto;
alloc->secure = tls != NULL;
alloc->srv = *srv;
alloc->user = username;
alloc->pass = password;
alloc->turn_ind = turn_ind;
alloc->alloch = alloch;
alloc->arg = arg;
alloc->tls = mem_ref(tls);
receiver_init(&alloc->recv, allocator->session_cookie, alloc->ix);
err = udp_listen(&alloc->us_tx, &laddr, NULL, NULL);
if (err) {
re_fprintf(stderr, "allocation: failed to create UDP tx socket"
" (%m)\n", err);
goto out;
}
udp_local_get(alloc->us_tx, &alloc->laddr_tx);
err = start(alloc);
if (err)
goto out;
out:
if (err)
mem_deref(alloc);
return err;
}
// receive callback
void p2p_receive_handler(const char* data, uint32_t len, struct p2pconnection* p2pcon)
{
//struct p2pconnection* p2pcon = (struct p2pconnection*)arg;
int fd = udp_sock_fd(p2pcon->ulsock, AF_INET);
struct sa* lsa =NULL;
lsa = (struct sa*)mem_zalloc(sizeof(struct sa),NULL);
udp_local_get(p2pcon->ulsock, lsa);
CUDT::postRecv(p2pcon->udtsock, &(lsa->u.sa), data, len);
re_printf("p2p receive data:%s\n", data);
}
int sip_server_create(struct sip_server **srvp)
{
struct sip_server *srv;
struct sa laddr_tp;
int err;
srv = mem_zalloc(sizeof *srv, destructor);
if (!srv)
return ENOMEM;
err = sa_set_str(&laddr_tp, "127.0.0.1", 0);
err |= sa_set_str(&srv->laddr, "127.0.0.1", 0);
if (err)
goto out;
err = sip_alloc(&srv->sip, NULL, 16, 16, 16,
"dummy SIP registrar", NULL, NULL);
if (err)
goto out;
err = sip_transp_add(srv->sip, SIP_TRANSP_UDP, &laddr_tp);
if (err) {
warning("failed to add sip transport (%m)\n", err);
goto out;
}
err = udp_listen(&srv->us, &srv->laddr, udp_recv, srv);
if (err) {
warning("sip: udp_listen on '%J' failed (%d/%m)\n",
&srv->laddr, err, err);
goto out;
}
err = udp_local_get(srv->us, &srv->laddr);
if (err) {
warning("sip: udp_local_get\n");
goto out;
}
#if 0
re_printf("sip: listen on %J\n", &srv->laddr);
#endif
out:
if (err)
mem_deref(srv);
else
*srvp = srv;
return err;
}
void TurnServer::init()
{
int err;
err = sa_set_str(&addr, "127.0.0.1", 0);
if (err)
goto out;
err = udp_listen(&us, &addr, turnserver_udp_recv, this);
if (err)
goto out;
err = udp_local_get(us, &addr);
if (err)
goto out;
turnd = (struct turnd *)mem_zalloc(sizeof(*turnd), destructor);
/* turn_external_addr */
err = sa_set_str(&turnd->rel_addr, "127.0.0.1", 0);
if (err) {
goto out;
}
/* turn_max_lifetime, turn_max_allocations, udp_sockbuf_size */
turnd->lifetime_max = TURN_DEFAULT_LIFETIME;
err = hash_alloc(&turnd->ht_alloc, 32);
if (err) {
error("turnd hash alloc error: %m\n", err);
goto out;
}
err = restund_tcp_init(turnd, fake_certificate_rsa);
ASSERT_EQ(0, err);
addr_tcp = *restund_tcp_laddr(turnd, false);
addr_tls = *restund_tcp_laddr(turnd, true);
turnd->recvh = tcp_handler;
turnd->arg = this;
info("turn: listen=%J, lifetime=%u ext=%j\n", &addr,
turnd->lifetime_max, &turnd->rel_addr);
out:
ASSERT_EQ(0, err);
}
// connect callback
void p2p_request_handler(struct p2phandle *p2p, const char* peername, struct p2pconnection **p2pcon)
{
re_fprintf(stderr, "p2p accept from:%s\n", peername);
int err = p2p_accept(p2p, p2pcon, peername, p2p_receive_handler, *p2pcon);
int fdaccept = udp_sock_fd((*p2pcon)->ulsock, AF_INET);
struct sa* lsa = NULL;
lsa = (struct sa*)mem_zalloc(sizeof(struct sa),NULL);
udp_local_get((*p2pcon)->ulsock, lsa);
sa_cpy(lsa, p2p->sactl);
int fdlisten = tcp_conn_fd(p2p->ltcp);
UDPSOCKET udpsock = (UDPSOCKET)fdlisten;
(*p2pcon)->udtsock = CUDT::socket(AF_INET, SOCK_STREAM, 0);
CUDT::bind((*p2pcon)->udtsock, &udpsock, &(p2p->sactl->u.sa), p2p->sactl->len);
CUDT::listen((*p2pcon)->udtsock, &(lsa->u.sa), 10);
if (err)
{
re_fprintf(stderr, "p2p accept error:%s\n", strerror(err));
return ;
}
}
int turnserver_alloc(struct turnserver **turnp)
{
struct turnserver *turn;
struct sa laddr;
int err = 0;
if (!turnp)
return EINVAL;
turn = mem_zalloc(sizeof(*turn), destructor);
if (!turn)
return ENOMEM;
err = sa_set_str(&laddr, "127.0.0.1", 0);
if (err)
goto out;
err = udp_listen(&turn->us, &laddr, srv_udp_recv, turn);
if (err)
goto out;
err = udp_local_get(turn->us, &turn->laddr);
if (err)
goto out;
err = tcp_listen(&turn->ts, &laddr, tcp_conn_handler, turn);
if (err)
goto out;
err = tcp_sock_local_get(turn->ts, &turn->laddr_tcp);
if (err)
goto out;
out:
if (err)
mem_deref(turn);
else
*turnp = turn;
return err;
}
static int comp_alloc(struct comp *comp, void *sock)
{
struct sa laddr;
int err;
err = udp_local_get(sock, &laddr);
if (err)
goto out;
comp->int_port = sa_port(&laddr);
info("natpmp: `%s' stream comp %u local UDP port is %u\n",
sdp_media_name(comp->media->sdpm), comp->id, comp->int_port);
err = natpmp_mapping_request(&comp->natpmp, &natpmp_srv,
comp->int_port, 0, comp->lifetime,
natpmp_resp_handler, comp);
if (err)
goto out;
out:
return err;
}
int icem_comp_alloc(struct icem_comp **cp, struct icem *icem, int id,
void *sock)
{
struct icem_comp *comp;
struct sa local;
int err;
if (!cp || !icem || id<1 || id>255 || !sock)
return EINVAL;
comp = mem_zalloc(sizeof(*comp), destructor);
if (!comp)
return ENOMEM;
comp->id = id;
comp->sock = mem_ref(sock);
comp->icem = icem;
err = udp_register_helper(&comp->uh, sock, icem->layer,
NULL, helper_recv_handler, comp);
if (err)
goto out;
err = udp_local_get(comp->sock, &local);
if (err)
goto out;
comp->lport = sa_port(&local);
out:
if (err)
mem_deref(comp);
else
*cp = comp;
return err;
}
static void process_msg(struct turnserver *turn, int proto, void *sock,
const struct sa *src, struct mbuf *mb)
{
struct stun_msg *msg = NULL;
struct sa laddr;
int err = 0;
if (stun_msg_decode(&msg, mb, NULL)) {
uint16_t numb, len;
struct channel *chan;
if (!turn->us_relay)
return;
++turn->n_raw;
numb = ntohs(mbuf_read_u16(mb));
len = ntohs(mbuf_read_u16(mb));
if (mbuf_get_left(mb) < len) {
DEBUG_WARNING("short length: %zu < %u\n",
mbuf_get_left(mb), len);
}
chan = find_channel_numb(turn, numb);
if (!chan) {
DEBUG_WARNING("channel not found: numb=%u\n", numb);
return;
}
/* relay data from channel to peer */
(void)udp_send(turn->us_relay, &chan->peer, mb);
return;
}
#if 0
re_printf("process: %s:%p:%J %s\n",
net_proto2name(proto), sock, src,
stun_method_name(stun_msg_method(msg)));
#endif
switch (stun_msg_method(msg)) {
case STUN_METHOD_ALLOCATE:
/* Max 1 allocation for now */
++turn->n_allocate;
if (turn->us_relay) {
err = EALREADY;
goto out;
}
turn->cli = *src;
err = sa_set_str(&laddr, "127.0.0.1", 0);
if (err)
goto out;
err = udp_listen(&turn->us_relay, &laddr,
relay_udp_recv, turn);
if (err)
goto out;
err = udp_local_get(turn->us_relay, &turn->relay);
if (err)
goto out;
udp_rxbuf_presz_set(turn->us_relay, 4);
err = stun_reply(proto, sock, src, 0,
msg, NULL, 0, false,
2,
STUN_ATTR_XOR_MAPPED_ADDR, src,
STUN_ATTR_XOR_RELAY_ADDR, &turn->relay);
break;
case STUN_METHOD_CREATEPERM: {
struct stun_attr *peer;
++turn->n_createperm;
peer = stun_msg_attr(msg, STUN_ATTR_XOR_PEER_ADDR);
TEST_ASSERT(peer != NULL);
add_permission(turn, &peer->v.xor_peer_addr);
/* todo: install permissions and check them */
err = stun_reply(proto, sock, src, 0,
msg, NULL, 0, false,
0);
}
break;
case STUN_METHOD_CHANBIND: {
struct stun_attr *chnr, *peer;
++turn->n_chanbind;
TEST_ASSERT(turn->us_relay != NULL);
chnr = stun_msg_attr(msg, STUN_ATTR_CHANNEL_NUMBER);
peer = stun_msg_attr(msg, STUN_ATTR_XOR_PEER_ADDR);
if (!chnr || !peer) {
DEBUG_WARNING("CHANBIND: missing chnr/peer attrib\n");
}
TEST_ASSERT(turn->chanc < ARRAY_SIZE(turn->chanv));
turn->chanv[turn->chanc].nr = chnr->v.channel_number;
turn->chanv[turn->chanc].peer = peer->v.xor_peer_addr;
++turn->chanc;
err = stun_reply(proto, sock, src, 0,
msg, NULL, 0, false,
0);
}
break;
case STUN_METHOD_SEND: {
struct stun_attr *peer, *data;
++turn->n_send;
TEST_ASSERT(turn->us_relay != NULL);
peer = stun_msg_attr(msg, STUN_ATTR_XOR_PEER_ADDR);
data = stun_msg_attr(msg, STUN_ATTR_DATA);
if (!peer || !data) {
DEBUG_WARNING("SEND: missing peer/data attrib\n");
goto out;
}
/* check for valid Permission */
if (!find_permission(turn, &peer->v.xor_peer_addr)) {
DEBUG_NOTICE("no permission to peer %j\n",
&peer->v.xor_peer_addr);
goto out;
}
err = udp_send(turn->us_relay, &peer->v.xor_peer_addr,
&data->v.data);
}
break;
default:
DEBUG_WARNING("unknown STUN method: %s\n",
stun_method_name(stun_msg_method(msg)));
err = EPROTO;
break;
}
if (err)
goto out;
out:
if (err && stun_msg_class(msg) == STUN_CLASS_REQUEST) {
(void)stun_ereply(proto, sock, src, 0, msg,
500, "Server Error",
NULL, 0, false, 0);
}
mem_deref(msg);
}
/**
* Add a SIP transport
*
* @param sip SIP stack instance
* @param tp SIP Transport
* @param laddr Local network address
* @param ... Optional transport parameters such as TLS context
*
* @return 0 if success, otherwise errorcode
*/
int sip_transp_add(struct sip *sip, enum sip_transp tp,
const struct sa *laddr, ...)
{
struct sip_transport *transp;
struct tls *tls;
va_list ap;
int err;
if (!sip || !laddr || !sa_isset(laddr, SA_ADDR))
return EINVAL;
transp = mem_zalloc(sizeof(*transp), transp_destructor);
if (!transp)
return ENOMEM;
list_append(&sip->transpl, &transp->le, transp);
transp->sip = sip;
transp->tp = tp;
va_start(ap, laddr);
switch (tp) {
case SIP_TRANSP_UDP:
err = udp_listen((struct udp_sock **)&transp->sock, laddr,
udp_recv_handler, transp);
if (err)
break;
err = udp_local_get(transp->sock, &transp->laddr);
break;
case SIP_TRANSP_TLS:
tls = va_arg(ap, struct tls *);
if (!tls) {
err = EINVAL;
break;
}
transp->tls = mem_ref(tls);
/*@fallthrough@*/
case SIP_TRANSP_TCP:
err = tcp_listen((struct tcp_sock **)&transp->sock, laddr,
tcp_connect_handler, transp);
if (err)
break;
err = tcp_sock_local_get(transp->sock, &transp->laddr);
break;
default:
err = EPROTONOSUPPORT;
break;
}
va_end(ap);
if (err)
mem_deref(transp);
return err;
}
static int test_stun_request(int proto, bool natted)
{
struct stunserver *srv = NULL;
struct stun_ctrans *ct = NULL;
struct nat *nat = NULL;
struct test test;
struct sa laddr, public_addr;
int err;
memset(&test, 0, sizeof(test));
err = stunserver_alloc(&srv);
if (err)
goto out;
err = stun_alloc(&test.stun, NULL, NULL, NULL);
if (err)
goto out;
if (proto == IPPROTO_UDP) {
err = sa_set_str(&laddr, "127.0.0.1", 0);
TEST_ERR(err);
err = udp_listen(&test.us, &laddr, udp_recv_handler, &test);
if (err)
goto out;
err = udp_local_get(test.us, &laddr);
TEST_ERR(err);
}
if (natted) {
err = sa_set_str(&public_addr, "4.5.6.7", 0);
TEST_ERR(err);
err = nat_alloc(&nat, srv->us, &public_addr);
if (err)
goto out;
sa_set_port(&public_addr, sa_port(&laddr));
}
else {
public_addr = laddr;
}
err = stun_request(&ct, test.stun, proto, test.us,
stunserver_addr(srv, proto), 0,
STUN_METHOD_BINDING, NULL, 0, true,
stun_resp_handler, &test, 0);
if (err)
goto out;
TEST_ASSERT(ct != NULL);
err = re_main_timeout(100);
if (err)
goto out;
if (srv->err) {
err = srv->err;
goto out;
}
if (test.err) {
err = test.err;
goto out;
}
/* verify results */
TEST_ASSERT(srv->nrecv >= 1);
TEST_EQUALS(1, test.n_resp);
if (proto == IPPROTO_UDP) {
TEST_SACMP(&public_addr, &test.mapped_addr, SA_ALL);
}
out:
mem_deref(test.stun);
mem_deref(test.us);
mem_deref(nat);
mem_deref(srv);
return err;
}
static void udp_read(struct udp_sock *us, int fd)
{
struct mbuf *mb = mbuf_alloc(us->rxsz);
struct sa src;
struct le *le;
int err = 0;
ssize_t n;
if (!mb)
return;
src.len = sizeof(src.u);
n = recvfrom(fd, BUF_CAST mb->buf + us->rx_presz,
mb->size - us->rx_presz, 0,
&src.u.sa, &src.len);
if (n < 0) {
err = errno;
if (EAGAIN == err)
goto out;
#ifdef EWOULDBLOCK
if (EWOULDBLOCK == err)
goto out;
#endif
#if TARGET_OS_IPHONE
if (ENOTCONN == err) {
struct udp_sock *us_new;
struct sa laddr;
err = udp_local_get(us, &laddr);
if (err)
goto out;
if (-1 != us->fd) {
fd_close(us->fd);
(void)close(us->fd);
us->fd = -1;
}
if (-1 != us->fd6) {
fd_close(us->fd6);
(void)close(us->fd6);
us->fd6 = -1;
}
err = udp_listen(&us_new, &laddr, NULL, NULL);
if (err)
goto out;
us->fd = us_new->fd;
us->fd6 = us_new->fd6;
us_new->fd = -1;
us_new->fd6 = -1;
mem_deref(us_new);
udp_thread_attach(us);
goto out;
}
#endif
/* cache error code */
us->err = err;
goto out;
}
mb->pos = us->rx_presz;
mb->end = n + us->rx_presz;
(void)mbuf_resize(mb, mb->end);
/* call helpers */
le = us->helpers.head;
while (le) {
struct udp_helper *uh = le->data;
bool hdld;
le = le->next;
hdld = uh->recvh(&src, mb, uh->arg);
if (hdld)
goto out;
}
us->rh(&src, mb, us->arg);
out:
mem_deref(mb);
}
/**
* Allocate a new NAT Mapping Behaviour Discovery session
*
* @param nmp Pointer to allocated NAT Mapping object
* @param laddr Local IP address
* @param srv STUN Server IP address and port
* @param proto Transport protocol
* @param conf STUN configuration (Optional)
* @param mh Mapping handler
* @param arg Handler argument
*
* @return 0 if success, errorcode if failure
*/
int nat_mapping_alloc(struct nat_mapping **nmp, const struct sa *laddr,
const struct sa *srv, int proto,
const struct stun_conf *conf,
nat_mapping_h *mh, void *arg)
{
struct nat_mapping *nm;
int i, err;
if (!nmp || !laddr || !srv || !mh)
return EINVAL;
nm = mem_zalloc(sizeof(*nm), mapping_destructor);
if (!nm)
return ENOMEM;
err = stun_alloc(&nm->stun, conf, NULL, NULL);
if (err)
goto out;
nm->proto = proto;
sa_cpy(&nm->laddr, laddr);
switch (proto) {
case IPPROTO_UDP:
err = udp_listen(&nm->us, &nm->laddr, udp_recv_handler, nm);
if (err)
goto out;
err = udp_local_get(nm->us, &nm->laddr);
if (err)
goto out;
break;
case IPPROTO_TCP:
/* Allocate and bind 3 TCP Sockets */
for (i=0; i<3; i++) {
err = tcp_conn_alloc(&nm->tcv[i], srv,
tcp_estab_handler,
tcp_recv_handler,
tcp_close_handler, nm);
if (err)
goto out;
err = tcp_conn_bind(nm->tcv[i], &nm->laddr);
if (err)
goto out;
err = tcp_conn_local_get(nm->tcv[i], &nm->laddr);
if (err)
goto out;
}
break;
default:
err = EPROTONOSUPPORT;
goto out;
}
sa_cpy(&nm->srv, srv);
nm->mh = mh;
nm->arg = arg;
*nmp = nm;
out:
if (err)
mem_deref(nm);
return err;
}
/*
* you can call this at any time
*
* @param addr HOST: SA_ADDR portion is used
* non-HOST: SA_ADDR + SA_PORT portion is used
*
* @param base_addr Optional
* @param rel_addr Optional
*
* @param layer mandatory for HOST and RELAY candidates
*/
int trice_lcand_add(struct ice_lcand **lcandp, struct trice *icem,
unsigned compid, int proto,
uint32_t prio, const struct sa *addr,
const struct sa *base_addr,
enum ice_cand_type type, const struct sa *rel_addr,
enum ice_tcptype tcptype,
void *sock, int layer)
{
struct ice_lcand *lcand;
int err = 0;
if (!icem || !compid || !proto || !addr)
return EINVAL;
if (!sa_isset(addr, SA_ADDR)) {
DEBUG_WARNING("lcand_add: SA_ADDR is not set\n");
return EINVAL;
}
if (type != ICE_CAND_TYPE_HOST) {
if (!sa_isset(addr, SA_PORT)) {
DEBUG_WARNING("lcand_add: %s: SA_PORT"
" must be set (%J)\n",
ice_cand_type2name(type), addr);
return EINVAL;
}
}
/* lookup candidate, replace if PRIO is higher */
/* TODO: dont look up TCP-ACTIVE types for now (port is zero) */
if (proto == IPPROTO_UDP) {
lcand = trice_lcand_find(icem, -1, compid, proto, addr);
if (lcand) {
trice_printf(icem,
"add_local[%s.%J] --"
" candidate already exists"
" (%H)\n",
ice_cand_type2name(type), addr,
trice_cand_print, lcand);
if (prio > lcand->attr.prio)
lcand = mem_deref(lcand);
else {
goto out;
}
}
}
err = trice_add_lcandidate(&lcand, icem, &icem->lcandl, compid, NULL,
proto, prio, addr, base_addr,
type, rel_addr, tcptype);
if (err)
return err;
if (type == ICE_CAND_TYPE_HOST) {
switch (proto) {
case IPPROTO_UDP:
if (sock) {
struct sa laddr;
lcand->us = mem_ref(sock);
err = udp_local_get(lcand->us,
&laddr);
if (err)
goto out;
lcand->attr.addr = *addr;
sa_set_port(&lcand->attr.addr,
sa_port(&laddr));
}
else {
err = udp_listen(&lcand->us, addr,
dummy_udp_recv, lcand);
if (err)
goto out;
err = udp_local_get(lcand->us,
&lcand->attr.addr);
if (err)
goto out;
}
err = udp_register_helper(&lcand->uh, lcand->us,
layer,
udp_helper_send_handler,
udp_helper_recv_handler,
lcand);
if (err)
goto out;
break;
case IPPROTO_TCP:
/* TCP-transport has 3 variants:
active, passive, so */
if (lcand->attr.tcptype == ICE_TCP_ACTIVE) {
/* the port MUST be set to 9 (i.e., Discard) */
/*sa_set_port(&lcand->attr.addr, 9); */
}
else if (lcand->attr.tcptype == ICE_TCP_PASSIVE ||
lcand->attr.tcptype == ICE_TCP_SO) {
err = tcp_listen(&lcand->ts, addr,
tcp_conn_handler, lcand);
if (err)
goto out;
err = tcp_local_get(lcand->ts,
&lcand->attr.addr);
if (err)
goto out;
}
else {
err = EPROTONOSUPPORT;
goto out;
}
break;
default:
err = EPROTONOSUPPORT;
goto out;
}
}
else if (type == ICE_CAND_TYPE_RELAY) {
switch (proto) {
case IPPROTO_UDP:
if (sock) {
lcand->us = mem_ref(sock);
}
else {
err = udp_listen(&lcand->us, NULL,
dummy_udp_recv, lcand);
if (err)
goto out;
}
err = udp_register_helper(&lcand->uh, lcand->us,
layer,
udp_helper_send_handler,
udp_helper_recv_handler,
lcand);
if (err)
goto out;
break;
default:
err = EPROTONOSUPPORT;
goto out;
}
}
else if (type == ICE_CAND_TYPE_SRFLX ||
type == ICE_CAND_TYPE_PRFLX) {
/* Special case for SRFLX UDP candidates, if he has
* its own UDP-socket that can be used.
*/
if (proto == IPPROTO_UDP && sock) {
lcand->us = mem_ref(sock);
err = udp_register_helper(&lcand->uh, lcand->us,
layer,
udp_helper_send_handler,
udp_helper_recv_handler,
lcand);
if (err)
goto out;
}
}
lcand->layer = layer;
/* pair this local-candidate with all existing remote-candidates */
err = trice_candpair_with_local(icem, lcand);
if (err)
goto out;
/* new pair -- refresh the checklist timer */
trice_checklist_refresh(icem);
out:
if (err)
mem_deref(lcand);
else if (lcandp)
*lcandp = lcand;
return err;
}