Struct DifferentialSet 

pub struct DifferentialSet {
    pub baseline: Vec<ProbeExchange>,
    pub probe: Vec<ProbeExchange>,
    pub canonical: Option<ProbeExchange>,
    pub technique: Technique,
}

Baseline and probe exchange pairs with technique context for differential analysis.

Fields

baseline: Vec<ProbeExchange>

Known-valid / control exchanges — establishes the expected response surface.

probe: Vec<ProbeExchange>

Suspect exchanges — compared against baseline to detect oracle signals.

canonical: Option<ProbeExchange>

Optional canonical (unmutated) exchange for control-integrity verification.

Populated by route-mutating strategies (case_normalize, trailing_slash) via the runner’s third dispatch. Consumed by control_integrity to detect when a path mutation destroyed routing — canonical 2xx + mutated baseline non-2xx means the mutation broke the route, and any resulting Contradictory is invalid.

technique: Technique

Technique that generated these probes — provides attribution and calibration context.

Implementations

impl DifferentialSet

pub fn new( baseline: Vec<ProbeExchange>, probe: Vec<ProbeExchange>, technique: Technique, ) -> Self

Constructs a DifferentialSet with canonical = None (the common case).

Only case_normalize and trailing_slash set canonical after construction.

pub fn first_harvest_exchange(&self) -> Option<(StatusCode, HeaderMap)>

Returns (status, headers) from the first baseline exchange suitable for harvesting.

Priority: 2xx first, then 3xx+Location, then 4xx with JSON content type (StructuredError — needed by C5 problem-details producer).

pub fn first_harvest_exchange_with_body( &self, ) -> Option<(StatusCode, HeaderMap, Bytes)>

Returns (status, headers, body) from the first baseline exchange suitable for harvesting.

Priority order:

1. First 2xx — carries ETag, Last-Modified, Content-Type, and body for chain producers.
2. First 3xx with a Location header — for redirect-diff chaining.
3. First baseline exchange classified as AuthChallenge, RateLimited, or StructuredError — admits 401/407 (C8 WWW-Authenticate) and 4xx+JSON (C5 body).

Trait Implementations

impl Clone for DifferentialSet

fn clone(&self) -> DifferentialSet

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DifferentialSet

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.