static int stream_sock_alloc(struct stream *s, int af)
{
struct sa laddr;
int tos, err;
if (!s)
return EINVAL;
/* we listen on all interfaces */
sa_init(&laddr, sa_af(net_laddr_af(af)));
err = rtp_listen(&s->rtp, IPPROTO_UDP, &laddr,
config.avt.rtp_ports.min, config.avt.rtp_ports.max,
s->rtcp, rtp_recv, rtcp_handler, s);
if (err)
return err;
tos = config.avt.rtp_tos;
(void)udp_setsockopt(rtp_sock(s->rtp), IPPROTO_IP, IP_TOS,
&tos, sizeof(tos));
(void)udp_setsockopt(rtcp_sock(s->rtp), IPPROTO_IP, IP_TOS,
&tos, sizeof(tos));
udp_rxsz_set(rtp_sock(s->rtp), RTP_RECV_SIZE);
return 0;
}
static int stream_sock_alloc(struct stream *s, int af)
{
struct sa laddr;
int tos, err;
if (!s)
return EINVAL;
/* we listen on all interfaces */
sa_init(&laddr, af);
err = rtp_listen(&s->rtp, IPPROTO_UDP, &laddr,
s->cfg.rtp_ports.min, s->cfg.rtp_ports.max,
s->rtcp, rtp_recv, rtcp_handler, s);
if (err) {
warning("stream: rtp_listen failed: af=%s ports=%u-%u"
" (%m)\n", net_af2name(af),
s->cfg.rtp_ports.min, s->cfg.rtp_ports.max, err);
return err;
}
tos = s->cfg.rtp_tos;
(void)udp_setsockopt(rtp_sock(s->rtp), IPPROTO_IP, IP_TOS,
&tos, sizeof(tos));
(void)udp_setsockopt(rtcp_sock(s->rtp), IPPROTO_IP, IP_TOS,
&tos, sizeof(tos));
udp_rxsz_set(rtp_sock(s->rtp), RTP_RECV_SIZE);
return 0;
}
int main(int argc, char *argv[])
{
struct sa nsv[16];
struct dnsc *dnsc = NULL;
struct sa laddr;
uint32_t nsc;
int err; /* errno return values */
/* enable coredumps to aid debugging */
(void)sys_coredump_set(true);
/* initialize libre state */
err = libre_init();
if (err) {
re_fprintf(stderr, "re init failed: %s\n", strerror(err));
goto out;
}
nsc = ARRAY_SIZE(nsv);
/* fetch list of DNS server IP addresses */
err = dns_srv_get(NULL, 0, nsv, &nsc);
if (err) {
re_fprintf(stderr, "unable to get dns servers: %s\n",
strerror(err));
goto out;
}
/* create DNS client */
err = dnsc_alloc(&dnsc, NULL, nsv, nsc);
if (err) {
re_fprintf(stderr, "unable to create dns client: %s\n",
strerror(err));
goto out;
}
/* create SIP stack instance */
err = sip_alloc(&sip, dnsc, 32, 32, 32,
"ua demo v" VERSION " (" ARCH "/" OS ")",
exit_handler, NULL);
if (err) {
re_fprintf(stderr, "sip error: %s\n", strerror(err));
goto out;
}
/* fetch local IP address */
err = net_default_source_addr_get(AF_INET, &laddr);
if (err) {
re_fprintf(stderr, "local address error: %s\n", strerror(err));
goto out;
}
/* listen on random port */
sa_set_port(&laddr, 0);
/* add supported SIP transports */
err |= sip_transp_add(sip, SIP_TRANSP_UDP, &laddr);
err |= sip_transp_add(sip, SIP_TRANSP_TCP, &laddr);
if (err) {
re_fprintf(stderr, "transport error: %s\n", strerror(err));
goto out;
}
/* create SIP session socket */
err = sipsess_listen(&sess_sock, sip, 32, connect_handler, NULL);
if (err) {
re_fprintf(stderr, "session listen error: %s\n",
strerror(err));
goto out;
}
/* create the RTP/RTCP socket */
err = rtp_listen(&rtp, IPPROTO_UDP, &laddr, 10000, 30000, true,
rtp_handler, rtcp_handler, NULL);
if (err) {
re_fprintf(stderr, "rtp listen error: %m\n", err);
goto out;
}
re_printf("local RTP port is %u\n", sa_port(rtp_local(rtp)));
/* create SDP session */
err = sdp_session_alloc(&sdp, &laddr);
if (err) {
re_fprintf(stderr, "sdp session error: %s\n", strerror(err));
goto out;
}
/* add audio sdp media, using port from RTP socket */
err = sdp_media_add(&sdp_media, sdp, "audio",
sa_port(rtp_local(rtp)), "RTP/AVP");
if (err) {
re_fprintf(stderr, "sdp media error: %s\n", strerror(err));
goto out;
}
/* add G.711 sdp media format */
err = sdp_format_add(NULL, sdp_media, false, "0", "PCMU", 8000, 1,
NULL, NULL, NULL, false, NULL);
if (err) {
re_fprintf(stderr, "sdp format error: %s\n", strerror(err));
goto out;
}
/* invite provided URI */
if (argc > 1) {
struct mbuf *mb;
/* create SDP offer */
err = sdp_encode(&mb, sdp, true);
if (err) {
re_fprintf(stderr, "sdp encode error: %s\n",
strerror(err));
goto out;
}
err = sipsess_connect(&sess, sess_sock, argv[1], name,
uri, name,
NULL, 0, "application/sdp", mb,
auth_handler, NULL, false,
offer_handler, answer_handler,
progress_handler, establish_handler,
NULL, NULL, close_handler, NULL, NULL);
mem_deref(mb); /* free SDP buffer */
if (err) {
re_fprintf(stderr, "session connect error: %s\n",
strerror(err));
goto out;
}
re_printf("inviting <%s>...\n", argv[1]);
}
else {
err = sipreg_register(®, sip, registrar, uri, uri, 60, name,
NULL, 0, 0, auth_handler, NULL, false,
register_handler, NULL, NULL, NULL);
if (err) {
re_fprintf(stderr, "register error: %s\n",
strerror(err));
goto out;
}
re_printf("registering <%s>...\n", uri);
}
/* main loop */
err = re_main(signal_handler);
out:
/* clean up/free all state */
mem_deref(sdp); /* will also free sdp_media */
mem_deref(rtp);
mem_deref(sess_sock);
mem_deref(sip);
mem_deref(dnsc);
/* free librar state */
libre_close();
/* check for memory leaks */
tmr_debug();
mem_debug();
return err;
}
