int main()
{
int lfd, cfd;
struct sctp_event_subscribe events;
struct sctp_initmsg init;
struct sockaddr_in sin[1];
if((lfd = ext_socket(checkIPv6() ? AF_INET6 : AF_INET,
SOCK_STREAM, IPPROTO_SCTP)) == -1) {
perror("socket");
exit(1);
}
init.sinit_num_ostreams = MAX_OUTGOING;
init.sinit_max_instreams = MAX_INCOMING;
init.sinit_max_attempts = 3;
init.sinit_max_init_timeo = 30;
if(ext_setsockopt(lfd, IPPROTO_SCTP, SCTP_INITMSG, (void*)&init, sizeof(init)) < 0) {
perror("setsockopt");
exit(1);
}
sin->sin_family = AF_INET;
sin->sin_port = htons(7);
sin->sin_addr.s_addr = INADDR_ANY;
if(ext_bind(lfd, (struct sockaddr *)sin, sizeof (*sin)) == -1) {
perror("bind");
exit(1);
}
/* Enable ancillary data and notifications */
memset((char*)&events,1,sizeof(events));
if (ext_setsockopt(lfd, IPPROTO_SCTP, SCTP_EVENTS, &events, sizeof(events)) < 0) {
perror("setsockopt SCTP_EVENTS");
exit(1);
}
if(ext_listen(lfd, 1) == -1) {
perror("listen");
exit(1);
}
/* Wait for new associations */
for (;;) {
if((cfd = ext_accept(lfd, NULL, 0)) == -1) {
perror("accept");
exit(1);
}
/* Enable ancillary data and notifications */
memset((char*)&events,1,sizeof(events));
if(ext_setsockopt(cfd, IPPROTO_SCTP, SCTP_EVENTS, &events, sizeof(events)) < 0) {
perror("setsockopt SCTP_EVENTS");
exit(1);
}
/* Echo back any and all data */
echo(cfd,0);
}
}
static pthread_t
init_server(struct sockaddr_in local_addr, int port, void *(connection_handler ()))
{
pthread_t tid;
int fd;
struct server_data *server_data_p;
if ((fd = ext_socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP)) < 0)
perror("socket call failed");
local_addr.sin_port= htons(port);
if(ext_bind(fd, (struct sockaddr *)&local_addr, sizeof(local_addr)) < 0)
perror("bind call failed");
if(ext_listen(fd, 1) < 0)
perror("listen call failed");
server_data_p = malloc(sizeof(struct server_data));
server_data_p->fd = fd;
server_data_p->connection_handler = connection_handler;
if (verbose) {
printf("Starting server on port %u.\n", port);
fflush(stdout);
}
pthread_create(&tid, NULL, &start_server, (void *)server_data_p);
return(tid);
}
int main(int argc, char **argv)
{
int fd, n, addr_len, len, msg_flags, close_time;
size_t buffer_size;
fd_set rset;
char buffer[1000];
struct sctp_event_subscribe evnts;
struct sctp_sndrcvinfo sri;
struct sockaddr_in local_addr, remote_addr;
if (argc < 4) {
printf("Usage: client local_port remote_addr remote_port [autoclose]\n");
exit(-1);
}
if ((fd = ext_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP)) < 0)
perror("socket");
bzero(&evnts, sizeof(evnts));
evnts.sctp_data_io_event = 1;
evnts.sctp_association_event = 1;
evnts.sctp_address_event = 1;
evnts.sctp_send_failure_event = 1;
evnts.sctp_peer_error_event = 1;
evnts.sctp_shutdown_event = 1;
evnts.sctp_partial_delivery_event = 1;
evnts.sctp_adaption_layer_event = 1;
if (ext_setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &evnts, sizeof(evnts)) < 0)
perror("setsockopt");
if (argc > 4) {
close_time = atoi(argv[4]);
if (ext_setsockopt(fd, IPPROTO_SCTP, SCTP_AUTOCLOSE, &close_time, sizeof(close_time)) < 0)
perror("setsockopt");
}
bzero(&local_addr, sizeof(struct sockaddr_in));
local_addr.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
local_addr.sin_len = sizeof(struct sockaddr_in);
#endif
local_addr.sin_addr.s_addr = htonl(INADDR_ANY);
local_addr.sin_port = htons(atoi(argv[1]));
if (ext_bind(fd, (struct sockaddr *) &local_addr, sizeof(local_addr)) != 0)
perror("bind");
if (ext_listen(fd, 1) != 0)
perror("listen");
remote_addr.sin_family = AF_INET;
remote_addr.sin_port = htons(atoi(argv[3]));
#ifdef HAVE_SIN_LEN
remote_addr.sin_len = sizeof(struct sockaddr_in);
#endif
remote_addr.sin_addr.s_addr = inet_addr(argv[2]);
FD_ZERO(&rset);
while (1) {
FD_SET(fd, &rset);
FD_SET(0, &rset);
n = ext_select(fd + 1, &rset, NULL, NULL, NULL);
if (n == 0) {
printf("Timer was runnig off.\n");
}
if (FD_ISSET(0, &rset)) {
printf("Reading from stdin.\n");
len = ext_read(0, (void *) buffer, sizeof(buffer));
if (len == 0)
break;
if (ext_sendto(fd, (const void *)buffer, len, 0, (const struct sockaddr *)&remote_addr, sizeof(remote_addr)) != len)
perror("sendto");
}
if (FD_ISSET(fd, &rset)) {
printf("Reading from network.\n");
addr_len = sizeof(struct sockaddr_in);
buffer_size = sizeof(buffer);
if ((len = sctp_recvmsg(fd, (void *) buffer, buffer_size , (struct sockaddr *)&remote_addr, &addr_len, &sri,&msg_flags)) < 0)
perror("recvfrom");
else {
if(msg_flags & MSG_NOTIFICATION) {
sctp_print_notification(buffer);
continue;
} else {
printf("Message of length %d received from %s:%u: %.*s", len, inet_ntoa(remote_addr.sin_addr), ntohs(remote_addr.sin_port), len, buffer);
}
}
}
}
if (ext_close(fd) < 0)
perror("close");
sleep(2);
return 0;
}
int main(int argc, char **argv)
{
int fd, n, addr_len, len;
fd_set rset;
char buffer[1000];
struct sctp_event_subscribe evnts;
struct sockaddr_in local_addr, remote_addr;
if (argc != 4) {
printf("Usage: client local_port remote_addr remote_port\n");
exit(-1);
}
if ((fd = ext_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP)) < 0)
perror("socket");
bzero(&evnts, sizeof(evnts));
if (ext_setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &evnts, sizeof(evnts)) < 0)
perror("setsockopt");
bzero(&local_addr, sizeof(struct sockaddr_in));
local_addr.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
local_addr.sin_len = sizeof(struct sockaddr_in);
#endif
local_addr.sin_addr.s_addr = htonl(INADDR_ANY);
local_addr.sin_port = htons(atoi(argv[1]));
if (ext_bind(fd, (struct sockaddr *) &local_addr, sizeof(local_addr)) != 0)
perror("bind");
if (ext_listen(fd, 1) != 0)
perror("listen");
remote_addr.sin_family = AF_INET;
remote_addr.sin_port = htons(atoi(argv[3]));
#ifdef HAVE_SIN_LEN
remote_addr.sin_len = sizeof(struct sockaddr_in);
#endif
remote_addr.sin_addr.s_addr = inet_addr(argv[2]);
FD_ZERO(&rset);
while (1) {
FD_SET(fd, &rset);
FD_SET(0, &rset);
puts("\n\n\n\nSELECT...\n");
n = ext_select(fd + 1, &rset, NULL, NULL, NULL);
if (n == 0) {
printf("Timer was runnig off.\n");
}
if (FD_ISSET(0, &rset)) {
printf("Reading from stdin.\n");
len = ext_read(0, (void *) buffer, sizeof(buffer));
if (len == 0)
break;
if (ext_sendto(fd, (const void *)buffer, len, 0, (const struct sockaddr *)&remote_addr, sizeof(remote_addr)) != len)
perror("sendto");
}
if (FD_ISSET(fd, &rset)) {
printf("Reading from network.\n");
addr_len = sizeof(struct sockaddr_in);
if ((len = ext_recvfrom(fd, (void *) buffer, sizeof(buffer),0,(struct sockaddr *) &remote_addr, &addr_len)) < 0)
{perror("recvfrom");
/* puts("STOP!------------------");
exit(1);
*/
}
else
printf("Message of length %d received from %s:%u: %.*s", len, inet_ntoa(remote_addr.sin_addr), ntohs(remote_addr.sin_port), len, buffer);
}
}
if (ext_close(fd) < 0)
perror("close");
sleep(2);
return 0;
}