volume server: answer chunk-manifest reads from the sum of chunk sizes (#11628)

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* volume: answer chunk-manifest HEAD from the chunk-size sum

* volume: size chunk-manifest reads by the sum of chunk sizes

* volume: saturate the sum of chunk-manifest Range lengths

* volume: fetch remote chunk-manifest ranges with a bounded Range

* volume: fmt chunk-manifest handlers

* volume: cap whole-window chunk reads at the visible window

* volume: reject an over-cap chunk span and an illegal manifest MIME

* volume: take the manifest transform extension from the URL first

Go's tryHandleChunkedFile keeps the extension parsed from the URL —
including a fid suffix like /vid,fid.png — and only falls back to the
resolved filename's extension when the URL has none. The manifest path
now does the same, so a transform requested on a fid-suffixed URL runs
as it does in Go.

Also: compute the chunk-size sum once, drop an unused remote_read_for
parameter, share the crop/resize predicate with parse_read_request, and
settle a couple of clippy lints.

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Co-authored-by: Chris Lu <chris.lu@gmail.com>

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Eliah RusinandChris Lu authored and GitHub committed 2026-10-10 10:05:00 +08:00

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seaweed-volume/src/server/handlers.rs

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