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Proxy host header follows upstream authority not downstream host · case 05

Proxy host header follows upstream authority not downstream host.

Member previewVariant 5 · 3 implementations · 4 checks per implementation

Case contract

Given url, downstream, preserve, proxy host header follows upstream authority not downstream host. Return the protocol decision or transformed value; fields are validated and fixtures state boundary outcomes.

Why this case matters

This deterministic proxy forwarding model isolates the proxy-host-header-follows-upstream-authority-not-downstream-host policy at a network component boundary.

One recorded failure

Sample boundary fixture

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

Boundary fixtureActualExpectedOutcome
fixture 3"down""up"Failed

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

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