Socket::Option.int

static VALUE
sockopt_s_int(VALUE klass, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE vint)
{
    int family = rsock_family_arg(vfamily);
    int level = rsock_level_arg(family, vlevel);
    int optname = rsock_optname_arg(family, level, voptname);
    return rsock_sockopt_new(family, level, optname, sockopt_pack_int(vint));
}