# Offline Istio / grpc-java absolute FQDN routing environment

Immutable Linux amd64 image: `silinchen0617/crossrepo-bench@sha256:9a77e07d5010f24cd5f27f40baff63ff56a77b220e1474e7bc41c1b68d805702`. Start a fresh container with --network=none and no mounts. Inside run `python3 /opt/crossswe-public-tests/run.py --output /tmp/public-report`. It rebuilds current sources and executes19 original upstream Istio domain/service-selection leaves and all6 unchanged RoutingUtilsTest methods. All25 pass at the exact original bases. Java compilation selects the unchanged RoutingUtilsTest source; other obsolete tests referencing removed APIs are outside this public subset. Original assertions remain intact. The Go domain tests assert baseline exact domain lists: implementations adding the requested absolute-FQDN entries can report differences in these old exact-list assertions. The same entry rebuilds edited source and reports actual results. Go1.27.0/JDK21.0.12/Gradle8.14.3 and normal dependencies for these commands and frozen evaluator are resident. Full-module go mod download for unrelated packages is not a required frozen command or an environment-wide dependency coverage claim.

Portable evaluator: `python3 environments/backend-grpc-java-12644/v1/run-contract.py --task-dir instances/backend-grpc-java-12644 --image silinchen0617/crossrepo-bench@sha256:9a77e07d5010f24cd5f27f40baff63ff56a77b220e1474e7bc41c1b68d805702 --world all_fixed --output /tmp/istio-grpc-fqdn-fixed`. It supports all_buggy, candidate and --candidate-patches JSON repository-key mapping. Only trusted evaluator containers receive original helpers and submitted/Gold patches. Original native setup/commands/assertions and source bases are retained. Each final-digest endpoint ran once: buggy6pass12fail; fixed18pass; P2P6/F2P12. Actual Go production HTTP route generation emits RouteConfiguration/domain JSON, which the current rebuilt Java production virtual-host selector consumes without inventing missing absolute domains. Four cross-repository chains and separate relative/absolute/wildcard cases execute; no remote network handshake claim.

Every new source/cache-layer payload/blob/diffID is independently streamed and hashed. Exact base-only Git and normal caches exclude primary compiled targets, Gold/private helpers and cached xds implementation jars. Normal Go compiler cache entries carry module origin hashes. Hub/current-daemon identity verified.