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doc (constraints for http range requests) #35227

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2 changes: 2 additions & 0 deletions framework-docs/modules/ROOT/pages/web/webmvc/mvc-range.adoc
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Expand Up @@ -15,6 +15,8 @@ xref:web/webmvc-functional.adoc#webmvc-fn-resources[serves a `Resource`]. `Range
support is also transparently handled when serving
xref:web/webmvc/mvc-config/static-resources.adoc[static resources].

NOTE: To be handled transparently, the `Resource` object must not be a `InputStreamResource` and, in case of an annotated controller returning `ResponseEntity<Resource>`, the status of the response must be 200.

The underlying support is in the `HttpRange` class, which exposes methods to parse
`Range` headers and split a `Resource` into a `List<ResourceRegion>` that in turn can be
then written to the response via `ResourceRegionHttpMessageConverter`.