struct io_plan *(*next)(struct io_conn *, void *),
void *next_arg)
{
struct io_plan_arg *arg = io_plan_arg(conn, IO_OUT);
arg->u1.s = fd;
struct io_plan *(*next)(struct io_conn *, void *),
void *next_arg)
{
struct io_plan_arg *arg = io_plan_arg(conn, IO_OUT);
arg->u1.s = fd;