The first request asks for bytes=0-1048575. RFC 9110 lets a server answer
200 when the range covers the whole representation, so a file under
1 MiB on a server that does support ranges could be refused as 'does not
support range requests'. A 200 whose Content-Length (or, without one, its
body, read at most that far) is within the range asked for is now kept as
the whole file and read from memory; a longer one is still refused unless
allow_full_download is set.
Test: a 9968-byte file served with 200 opens in one request with the
transcript of File::open (it was refused before); with a 4096-byte first
request it is still refused.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
