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/* This is based on /src/tools/test/stress2/misc/sctp.sh
* but it uses fork and the server exits rather than
* loops indefinitely */
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <libgen.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int my_port_num = 62324;
static void
die(const char *s)
{
perror(s);
exit(1);
}
static void
server(void)
{
struct sctp_sndrcvinfo sndrcvinfo;
struct sockaddr_in servaddr = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_ANY),
.sin_port = htons(my_port_num),
};
struct sctp_initmsg initmsg = {
.sinit_num_ostreams = 5,
.sinit_max_instreams = 5,
.sinit_max_attempts = 4,
};
int listen_fd, conn_fd, flags, ret, in;
listen_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (listen_fd < 0)
die("socket");
ret = bind(listen_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
if (ret < 0)
die("bind");
ret = setsockopt(listen_fd, IPPROTO_SCTP, SCTP_INITMSG, &initmsg,
sizeof(initmsg));
if (ret < 0)
die("setsockopt");
ret = listen(listen_fd, initmsg.sinit_max_instreams);
if (ret < 0)
die("listen");
char buffer[1024];
printf("Waiting for connection\n");
fflush(stdout);
conn_fd = accept(listen_fd, (struct sockaddr *) NULL, NULL);
if(conn_fd < 0)
die("accept()");
printf("New client connected\n");
fflush(stdout);
/* Note that flags is uninitialized here */
in = sctp_recvmsg(conn_fd, buffer, sizeof(buffer), NULL, 0,
&sndrcvinfo, &flags);
if (in > 0) {
printf("Received data: %s\n", buffer);
fflush(stdout);
}
close(conn_fd);
}
static void
client(void)
{
struct sockaddr_in servaddr = {
.sin_family = AF_INET,
.sin_port = htons(my_port_num),
.sin_addr.s_addr = inet_addr("127.0.0.1"),
};
int conn_fd, ret;
const char *msg = "Hello, Server!";
conn_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (conn_fd < 0)
die("socket()");
ret = connect(conn_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
if (ret < 0)
die("connect()");
ret = sctp_sendmsg(conn_fd, (void *) msg, strlen(msg) + 1, NULL, 0, 0, 0, 0, 0, 0 );
if (ret < 0)
die("sctp_sendmsg");
close(conn_fd);
}
int
main(int argc __unused, char *argv[])
{
switch (fork())
{
case 0:
sleep(1);
client();
exit(EXIT_SUCCESS);
default:
server();
exit(EXIT_SUCCESS);
case -1:
exit(EXIT_FAILURE);
}
}
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