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// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
int main(int argc, char *argv[])
{
struct sockaddr_in saddr = {}, daddr = {};
int sd, ret, len = sizeof(daddr);
struct timeval tv = {25, 0};
char buf[] = "hello";
if (argc != 6 || (strcmp(argv[1], "server") && strcmp(argv[1], "client"))) {
printf("%s <server|client> <LOCAL_IP> <LOCAL_PORT> <REMOTE_IP> <REMOTE_PORT>\n",
argv[0]);
return -1;
}
sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
if (sd < 0) {
printf("Failed to create sd\n");
return -1;
}
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = inet_addr(argv[2]);
saddr.sin_port = htons(atoi(argv[3]));
ret = bind(sd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0) {
printf("Failed to bind to address\n");
goto out;
}
ret = listen(sd, 5);
if (ret < 0) {
printf("Failed to listen on port\n");
goto out;
}
daddr.sin_family = AF_INET;
daddr.sin_addr.s_addr = inet_addr(argv[4]);
daddr.sin_port = htons(atoi(argv[5]));
/* make test shorter than 25s */
ret = setsockopt(sd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
if (ret < 0) {
printf("Failed to setsockopt SO_RCVTIMEO\n");
goto out;
}
if (!strcmp(argv[1], "server")) {
sleep(1); /* wait a bit for client's INIT */
ret = connect(sd, (struct sockaddr *)&daddr, len);
if (ret < 0) {
printf("Failed to connect to peer\n");
goto out;
}
ret = recvfrom(sd, buf, sizeof(buf), 0, (struct sockaddr *)&daddr, &len);
if (ret < 0) {
printf("Failed to recv msg %d\n", ret);
goto out;
}
ret = sendto(sd, buf, strlen(buf) + 1, 0, (struct sockaddr *)&daddr, len);
if (ret < 0) {
printf("Failed to send msg %d\n", ret);
goto out;
}
printf("Server: sent! %d\n", ret);
}
if (!strcmp(argv[1], "client")) {
usleep(300000); /* wait a bit for server's listening */
ret = connect(sd, (struct sockaddr *)&daddr, len);
if (ret < 0) {
printf("Failed to connect to peer\n");
goto out;
}
sleep(1); /* wait a bit for server's delayed INIT_ACK to reproduce the issue */
ret = sendto(sd, buf, strlen(buf) + 1, 0, (struct sockaddr *)&daddr, len);
if (ret < 0) {
printf("Failed to send msg %d\n", ret);
goto out;
}
ret = recvfrom(sd, buf, sizeof(buf), 0, (struct sockaddr *)&daddr, &len);
if (ret < 0) {
printf("Failed to recv msg %d\n", ret);
goto out;
}
printf("Client: rcvd! %d\n", ret);
}
ret = 0;
out:
close(sd);
return ret;
}
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