chore: add grpc-protoscope sample app for Keploy gRPC field-ordering bug

[anjupathak03]

What

Adds grpc-protoscope/ — a minimal Go gRPC client-server sample app that reproduces the Keploy gRPC field-ordering bug (protoscope indentation causing false SCHEMA_BROKEN failures).

Why

A user reported that Keploy was failing gRPC tests even though recorded and replayed responses had identical structure and values. The only difference was the order of repeated fields inside nested protobuf sub-messages — which is perfectly valid in protobuf. This sample app reproduces that exact scenario using rand.Shuffle + raw wire encoding.

What's included

• proto/search.proto — Protobuf schema matching the bug report structure
• server/main.go — gRPC server with randomized wire field ordering via protowire + rawCodec
• client/main.go — gRPC client that calls the Search RPC
• keploy.yml — Keploy configuration
• README.md — Full bug analysis, root cause, and reproduction steps

[Copilot]

Pull request overview

Adds new minimal reproduction sample apps to the samples-go repo to help debug Keploy replay issues (gRPC protoscope canonicalization + SSE preflight port resolution), and updates CI to build multi-command Go modules.

Changes:

• Added grpc-protoscope/ Go gRPC client/server repro that emits raw protobuf wire bytes with randomized repeated-field ordering.
• Added sse-preflight/ tiny dual-port HTTP/SSE repro for CORS preflight being replayed on the wrong port.
• Updated CI build workflow to run go build ./... per module (supports multiple ./cmd/* entrypoints).

Reviewed changes

Copilot reviewed 14 out of 15 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
sse-preflight/README.md	Documents SSE preflight repro steps.
sse-preflight/go.mod	Declares the module for the SSE sample.
sse-preflight/cmd/server/main.go	Dual HTTP + SSE server for the preflight/404 repro.
sse-preflight/cmd/client/main.go	Sends an OPTIONS preflight request to the SSE endpoint.
README.md	Adds sse-preflight to the top-level sample list.
grpc-protoscope/server/main.go	gRPC server that returns manually-built wire bytes with shuffled repeated entries.
grpc-protoscope/client/main.go	gRPC client that calls Search and prints response fields.
grpc-protoscope/proto/search.proto	Proto schema mirroring the bug report structure.
grpc-protoscope/searchpb/search.pb.go	Generated protobuf types for the sample.
grpc-protoscope/searchpb/search_grpc.pb.go	Generated gRPC stubs for the sample.
grpc-protoscope/README.md	Detailed root-cause analysis + repro instructions for the gRPC issue.
grpc-protoscope/keploy.yml	Keploy config for recording/replaying the gRPC sample.
grpc-protoscope/keploy/.gitignore	Ignores Keploy reports output.
grpc-protoscope/keploy/test-set-0/tests/test-1.yaml	Recorded Keploy test artifact (ordering variant).
grpc-protoscope/keploy/test-set-1/tests/test-1.yaml	Recorded Keploy test artifact (ordering variant).
grpc-protoscope/keploy/test-set-2/tests/test-1.yaml	Recorded Keploy test artifact (ordering variant).
grpc-protoscope/go.mod	Module/dependencies for grpc-protoscope (currently includes local replace).
grpc-protoscope/go.sum	Dependency lockfile for grpc-protoscope.
.github/workflows/build.yml	Builds each sample module via go build ./....

Comments suppressed due to low confidence (1)

grpc-protoscope/go.mod:66

• replace go.keploy.io/server/v3 => /home/anju/keploy hard-codes a local absolute path, so this module won’t build for anyone else (including CI). Remove the replace and either (a) depend on a real published go.keploy.io/server/v3 version, or (b) avoid the dependency entirely if it isn’t needed for the sample build/run steps.

)

replace go.keploy.io/server/v3 => /home/anju/keploy

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated 9 comments.

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