FA-26409 / HTTP ranges / Member archive

Explicit identity exclusion prevents uncompressed range fallback · case 04

Explicit identity exclusion prevents uncompressed range fallback.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Local negotiation returns compressed206 if seekable; otherwise identity206 only for positive identity quality, else 406. payload propagates for accepted responses.

Why this case matters

Range responses combine representation identity, conditional requests, framing, and partial-object state.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
identity-quality-zero fixture 0	`["identity206", "pppp"]`	`["406", ""]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.