//SCTPServer.C
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define MAX_BUFFER 1024
#define MY_PORT_NUM 4500

void die(char *s)
{
perror(s);
exit(1);
}

int main()
{
int listenSock, connSock, ret, in , flags, i;
struct sockaddr_in servaddr;
struct sctp_initmsg initmsg;
struct sctp_event_subscribe events;
struct sctp_sndrcvinfo sndrcvinfo;
//char buffer[MAX_BUFFER+1];

listenSock = socket( AF_INET, SOCK_STREAM, IPPROTO_SCTP );

bzero( (void *)&servaddr, sizeof(servaddr) );
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl( INADDR_ANY );
servaddr.sin_port = htons(MY_PORT_NUM);

ret = bind( listenSock, (struct sockaddr *)&servaddr, sizeof(servaddr) );

/* Specify that a maximum of 5 streams will be available per socket */
memset( &initmsg, 0, sizeof(initmsg) );
initmsg.sinit_num_ostreams = 5;
initmsg.sinit_max_instreams = 5;
initmsg.sinit_max_attempts = 4;
ret = setsockopt( listenSock, IPPROTO_SCTP, SCTP_INITMSG,
&initmsg, sizeof(initmsg) );

listen( listenSock, 5 );

while( 1 ) {

char buffer[MAX_BUFFER + 1];
int len ;
printf(“Awaiting a new connection\n”);

connSock = accept( listenSock, (struct sockaddr *)NULL, (int *)NULL );
if(connSock == -1)
die(“accept()”);
else
printf(“New client connected….\n”);
in = sctp_recvmsg( connSock, (void *)buffer, sizeof(buffer),
(struct sockaddr *)NULL, 0, &sndrcvinfo, &flags );
printf(” Data : %s\n”, buffer);
close( connSock );
}

return 0;
}

SCTP Client code: https://anshumanbiswal.com/2014/09/09/c-code-of-sctp-client/