Function sgx_urts::socket::u_sendto_ocall

#[no_mangle]
pub extern "C" fn u_sendto_ocall(
    error: *mut c_int, 
    sockfd: c_int, 
    buf: *const c_void, 
    len: size_t, 
    flags: c_int, 
    dest_addr: *const sockaddr, 
    addrlen: socklen_t
) -> ssize_t