So I am getting started with SCTP and have written the basics of the SCTP server application(which I intend to modify to make it a peer-to-peer app). The code is incomplete but I compiled and ran it to test the socket options and the first setsockopt returns error 10042(protocol not supported). I have determined that it's the first call of setsockopt() that returns an error. So here is the incomplete code:
#include "stdafx.h"
#include <iostream>
#include <iostream>
#include <string.h>
#include <stdlib.h>
#ifndef UNICODE
#define UNICODE
#endif
#define WIN32_LEAN_AND_MEAN
#include <WinSock2.h>
#include <WS2tcpip.h>
#include <WS2spi.h>
#include <ws2sctp.h>
#include <wsipv6ok.h>
#include <if.h>
#include "ws2isatap.h"
#include "if_tunnel.h"
#pragma comment(lib, "ws2_32.lib")
#pragma comment(lib, "sctpsp.lib")
using namespace std;
using namespace System;
static int LISTENQ = 5;
void isatap_enable(void);
int main(int argc, char* argv[]){
WSADATA wsaData;
int iResult;
int optv = 10;
u_long imode = 1;
bool connected = false;
char *optval = (char*)&optv;
int optlen = sizeof(optval);
sockaddr_in6 servAddr;
sctp_sndrcvinfo sr;
sctp_event_subscribe evnts;
sctp_initmsg init;
memset(&sr,0,sizeof(sr));
memset(&evnts,0,sizeof(evnts));
memset(&init,0,sizeof(init));
memset(&servAddr,0,sizeof(servAddr));
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != NO_ERROR) {
wprintf(L"WSAStartup function failed with error: %d\n", iResult);
return 1;
}
SOCKET servSock = socket(AF_INET6,SOCK_STREAM,IPPROTO_SCTP);
if(servSock==INVALID_SOCKET){
printf("Socket function failed with error: %d\n",GetLastError());
return 1;
}
if(setsockopt(servSock,IPPROTO_IPV6,IPV6_PROTECTION_LEVEL,optval,sizeof(optval))<0){
printf("setsockopt function failed with error: %d\n", GetLastError());
return 1;
}
u_int servPort = 5000;
servAddr.sin6_family = AF_INET6;
servAddr.sin6_addr = in6addr_any;
servAddr.sin6_port = htons(servPort);
if(setsockopt(servSock,IPPROTO_SCTP,SCTP_EVENTS,(const char*)&evnts,sizeof(evnts)) < 0){
printf("setsockopt function failed with error: %d\n", GetLastError());
return 1;
}
ioctlsocket(servSock,FIONBIO, &imode);
if(bind(servSock,(struct sockaddr*)&servAddr,sizeof(servAddr))<0){
printf("Bind function failed with error: %d\n", GetLastError());
return 1;
}
evnts.sctp_data_io_event = 1;
evnts.sctp_association_event = *(u_char*)optval;
for(;;){
if(listen(servSock,LISTENQ) < 0){
printf("Listen function failed with error: %d/n",GetLastError());
return 1;
}else{
printf("Listening on port %d\n",servPort);
}
}
}
