def fetch.next
import bend-kit-http@0.38.2.0/http.bend as Httpimport Base
2580def fetch.next(+head: Bool, rv: Rv, +n: U32, m: Socket & Result<&1, &1, U32 & String, U32 & Array<U32>>) -> Socket & Fl:
2581 (s, r) = m
2582 match r:
2583 case Fail{(+code, why)}:
2584 (s, FlBad{Some{err.or_late(code, ErrRead{code, why})}, U32.is_zero(n)})
2585 case Done{p}:
2586 (s, fetch.piece(head, rv, n, p))