void
destroy_sctp_transport(struct sctp_transport *sctp)
{
if (sctp == NULL)
return;
usrsctp_close(sctp->sock);
usrsctp_deregister_address(sctp);
BIO_free_all(sctp->incoming_bio);
BIO_free_all(sctp->outgoing_bio);
#ifdef DEBUG_SCTP
close(sctp->incoming_stub);
close(sctp->outgoing_stub);
#endif
g_async_queue_unref(sctp->deferred_messages);
free(sctp);
sctp = NULL;
g_sctp_ref--;
if (g_sctp_ref == 0) {
for (int i = 0; i < 300; ++i) {
if (usrsctp_finish() == 0)
return;
g_usleep(10000);
}
}
}
static int
receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
{
if (data) {
if (flags & MSG_NOTIFICATION) {
handle_notification((union sctp_notification *)data, datalen);
} else {
printf("Msg of length %d received via %p:%u on stream %d with SSN %u and TSN %u, PPID %d, context %u.\n",
(int)datalen,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rcv.rcv_sid,
rcv.rcv_ssn,
rcv.rcv_tsn,
ntohl(rcv.rcv_ppid),
rcv.rcv_context);
}
free(data);
} else {
usrsctp_deregister_address(ulp_info);
usrsctp_close(sock);
}
return 1;
}
static int
conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
{
char *dump_buf;
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
#ifdef _WIN32
fdp = (SOCKET *)addr;
#else
fdp = (int *)addr;
#endif
if ((dump_buf = usrsctp_dumppacket(buf, length, SCTP_DUMP_OUTBOUND)) != NULL) {
//fprintf(stderr, "%s", dump_buf);
usrsctp_freedumpbuffer(dump_buf);
}
#ifdef _WIN32
if (send(*fdp, buf, (int)length, 0) == SOCKET_ERROR) {
return (WSAGetLastError());
#else
if (send(*fdp, buf, length, 0) < 0) {
return (errno);
#endif
} else {
return (0);
}
}
static int
receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
{
printf("Message %p received on sock = %p.\n", data, (void *)sock);
if (data) {
if ((flags & MSG_NOTIFICATION) == 0) {
printf("Messsage of length %d received via %p:%u on stream %u with SSN %u and TSN %u, PPID %u, context %u, flags %x.\n",
(int)datalen,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rcv.rcv_sid,
rcv.rcv_ssn,
rcv.rcv_tsn,
ntohl(rcv.rcv_ppid),
rcv.rcv_context,
flags);
}
free(data);
} else {
usrsctp_deregister_address(ulp_info);
usrsctp_close(sock);
}
return (1);
}
void janus_sctp_association_destroy(janus_sctp_association *sctp) {
if(sctp == NULL)
return;
JANUS_LOG(LOG_INFO, "[%"SCNu64"] Destroying SCTP association\n", sctp->handle_id);
usrsctp_deregister_address(sctp);
usrsctp_shutdown(sctp->sock, SHUT_RDWR);
usrsctp_close(sctp->sock);
janus_mutex_lock(&sctp->mutex);
sctp->dtls = NULL; /* This will get rid of the thread */
janus_mutex_unlock(&sctp->mutex);
}
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
struct sockaddr_conn sconn;
#ifdef _WIN32
SOCKET fd;
#else
int fd;
#endif
struct socket *s;
#ifdef _WIN32
HANDLE tid;
#else
pthread_t tid;
#endif
#ifdef _WIN32
WSADATA wsaData;
#endif
if (argc < 4) {
printf("error: this program requires 4 arguments!\n");
exit(EXIT_FAILURE);
}
#ifdef _WIN32
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
printf("WSAStartup failed\n");
exit (EXIT_FAILURE);
}
#endif
usrsctp_init(0, conn_output, debug_printf);
/* set up a connected UDP socket */
#ifdef _WIN32
if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
printf("socket() failed with error: %d\n", WSAGetLastError());
}
#else
if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("socket");
}
#endif
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin.sin_len = sizeof(struct sockaddr_in);
#endif
sin.sin_port = htons(atoi(argv[2]));
if (!inet_pton(AF_INET, argv[1], &sin.sin_addr.s_addr)){
printf("error: invalid address\n");
exit(1);
}
#ifdef _WIN32
if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
printf("bind() failed with error: %d\n", WSAGetLastError());
}
#else
if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
perror("bind");
}
#endif
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin.sin_len = sizeof(struct sockaddr_in);
#endif
sin.sin_port = htons(atoi(argv[4]));
if (!inet_pton(AF_INET, argv[3], &sin.sin_addr.s_addr)){
printf("error: invalid address\n");
exit(1);
}
#ifdef _WIN32
if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
printf("connect() failed with error: %d\n", WSAGetLastError());
}
#else
if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
perror("connect");
}
#endif
#ifdef SCTP_DEBUG
usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
#endif
usrsctp_sysctl_set_sctp_ecn_enable(0);
usrsctp_register_address((void *)&fd);
#ifdef _WIN32
tid = CreateThread(NULL, 0, &handle_packets, (void *)&fd, 0, NULL);
#else
pthread_create(&tid, NULL, &handle_packets, (void *)&fd);
#endif
if ((s = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, receive_cb, NULL, 0, NULL)) == NULL) {
perror("usrsctp_socket");
}
memset(&sconn, 0, sizeof(struct sockaddr_conn));
sconn.sconn_family = AF_CONN;
#ifdef HAVE_SCONN_LEN
sconn.sconn_len = sizeof(struct sockaddr_conn);
#endif
sconn.sconn_port = htons(5001);
sconn.sconn_addr = (void *)&fd;
if (usrsctp_bind(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_bind");
}
if (usrsctp_listen(s, 1) < 0) {
perror("usrsctp_listen");
}
while (1) {
if (usrsctp_accept(s, NULL, NULL) == NULL) {
perror("usrsctp_accept");
}
}
usrsctp_close(s);
usrsctp_deregister_address((void *)&fd);
while (usrsctp_finish() != 0) {
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
#ifdef _WIN32
TerminateThread(tid, 0);
WaitForSingleObject(tid, INFINITE);
if (closesocket(fd) == SOCKET_ERROR) {
printf("closesocket() failed with error: %d\n", WSAGetLastError());
}
WSACleanup();
#else
pthread_cancel(tid);
pthread_join(tid, NULL);
if (close(fd) < 0) {
perror("close");
}
#endif
return (0);
}
static int
conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
{
char *dump_buf;
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
#ifdef _WIN32
fdp = (SOCKET *)addr;
#else
fdp = (int *)addr;
#endif
if ((dump_buf = usrsctp_dumppacket(buf, length, SCTP_DUMP_OUTBOUND)) != NULL) {
fprintf(stderr, "%s", dump_buf);
usrsctp_freedumpbuffer(dump_buf);
}
#ifdef _WIN32
if (send(*fdp, buf, length, 0) == SOCKET_ERROR) {
return (WSAGetLastError());
#else
if (send(*fdp, buf, length, 0) < 0) {
return (errno);
#endif
} else {
return (0);
}
}
static int
receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
{
if (data) {
if (flags & MSG_NOTIFICATION) {
printf("Notification of length %d received.\n", (int)datalen);
} else {
printf("Msg of length %d received via %p:%u on stream %d with SSN %u and TSN %u, PPID %d, context %u.\n",
(int)datalen,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rcv.rcv_sid,
rcv.rcv_ssn,
rcv.rcv_tsn,
ntohl(rcv.rcv_ppid),
rcv.rcv_context);
}
free(data);
} else {
usrsctp_deregister_address(ulp_info);
usrsctp_close(sock);
}
return (1);
}
void
debug_printf(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vprintf(format, ap);
va_end(ap);
}
