nc 0.9.8

Access system calls directly
Documentation 
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/// Send a message on a socket.
pub unsafe fn sctp_generic_sendmsg(
    sockfd: i32,
    msg: &[u8],
    to: &[&sockaddr_t],
    sinfo: &mut sctp_sndrcvinfo_t,
    flags: i32,
) -> Result<ssize_t, Errno> {
    let sockfd = sockfd as usize;
    let msg_ptr = msg.as_ptr() as usize;
    let msg_len = msg.len();
    let to_ptr = to.as_ptr() as usize;
    let to_len = to.len();
    let sinfo_ptr = core::ptr::from_mut(sinfo) as usize;
    let _flags = flags as usize;
    // FIXME(Shaohua): Parameter error
    unsafe {
        syscall6(
            SYS_SCTP_GENERIC_SENDMSG,
            sockfd,
            msg_ptr,
            msg_len,
            to_ptr,
            to_len,
            sinfo_ptr,
            //flags,
        )
        .map(|ret| ret as ssize_t)
    }
}