Bump google.golang.org/grpc from 1.81.0 to 1.82.1

[dependabot]

Bumps google.golang.org/grpc from 1.81.0 to 1.82.1.

Release notes

Sourced from google.golang.org/grpc's releases.

Release 1.82.1

Security

• server: Stop reading from the connection when flooded by HTTP/2 frames. The default value for this limit is 100 frames, excluding DATA and HEADERS, and may be changed by setting environment variable GRPC_GO_EXPERIMENTAL_CONTROL_BUFFER_THROTTLE_LIMIT.
• xds/rbac: Support Metadata and RequestedServerName permissions matcher fields. If present in a DENY rule, previously these would be ignored and fail-open.
• xds/rbac: Fix panic when parsing unsupported fields in NotRule/NotId permissions.
• xds/rbac: Support the deprecated source_ip principal identifier by treating it as equivalent to direct_remote_ip.

Release 1.82.0

Behavior Changes

• server: Remove support for GRPC_GO_EXPERIMENTAL_DISABLE_STRICT_PATH_CHECKING environment varibale. Strict incoming RPC path validation (which has been the default since v1.79.3) can no longer be disabled. (#9112)
• transport: Add environment variable to change the default max header list size from 16MB to 8KB. This may be enabled by setting GRPC_GO_EXPERIMENTAL_ENABLE_8KB_DEFAULT_HEADER_LIST_SIZE=true. This will be enabled by default in a subsequent release. (#9019)
• balancer: Load Balancing policy registry is now case-sensitive. Set GRPC_GO_EXPERIMENTAL_CASE_SENSITIVE_BALANCER_REGISTRIES=false (and file an issue) to revert to case-insensitive behavior. (#9017)

New Features

• experimental/stats: Expose a new API, NewContextWithLabelCallback, to register a callback that is invoked when telemetry labels are added. (#8877)
  • Special Thanks: @​seth-epps
• client: Return a portion of the response body in the error message, when the client receives an unexpected non-gRPC HTTP response, to make debugging easier. (#8929)
  • Special Thanks: @​chengxilo
• server: Add environment variable GRPC_GO_SERVER_GOROUTINE_LABELS that controls setting runtime/pprof.Labels on goroutines spawned by the server. Set GRPC_GO_SERVER_GOROUTINE_LABELS=grpc.method=true to add the grpc.method label on goroutines spawned to handle incoming requests. (#9082)
  • Special Thanks: @​dfinkel

Bug Fixes

• xds/server: Fix a memory leak of HTTP filter instances occurring when route configurations are updated in-place during a Route Discovery Service (RDS) update. (#9138)
• grpc: In the deprecated gzip Compressor (used via the deprecated WithCompressor dial option), enforce the MaxRecvMsgSize limit on the decompressed message buffer, preventing excessive memory allocation from highly compressed payloads. (#9114)
  • Special Thanks: @​evilgensec
• stats/opentelemetry: Record retry attempts, grpc.previous-rpc-attempts, at the call level and not the attempt level. (#8923)
• encoding: Ensure Close() is always called on readers returned from Compressor.Decompress if possible. (#9135)
• channelz: Fix the LastMessageSentTimestamp and LastMessageReceivedTimestamp fields in SocketMetrics to ensure they contain correct timestamp values. (#9109)

Release 1.81.1

Security

• xds/rbac: Fix a potential authorization bypass caused by incorrectly falling through URI/DNS SANs to Subject Distinguished Name (DN) when matching the authenticated principal name. With this fix, only the first non-empty identity source will be used, as per gRFC A41. (#9111)
  • Special Thanks: @​al4an444

Bug Fixes

• otel: Segregate client and server RPC information used for metrics and traces, to avoid one overwriting the other. (#9081)

Commits

• ebd8f06 Change version to 1.82.1 (#9238)
• 4ea465d Cherry-pick commits (#9236)
• 9494a2c Change version to 1.82.1-dev (#9171)
• bd23985 Change version to 1.82.0 (#9170)
• 0f3086d Fix minor issues not covered by PR #9137 (#9147)
• fef07fb internal: Split v3procservicepb import into pb and grpc for extproc (#9163)
• 91dd64f transport: surface subsequent data when receiving non-gRPC header (#8929)
• adc97de test/kokoro: add config for regional-td test (#9158)
• 57c9ff1 xds: ensure full-string matching for RBAC Filter rules (#9148)
• b58f32d server: Set a pprof label on new stream goroutines (#9082)
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Change Impact: 🟡 Medium

Reasoning: This updates a shared indirect gRPC dependency, which may affect inter-service communication across consumers. The change is isolated and straightforward to roll back, but includes upstream behavioral changes and fixes.

Regression Risk: Moderate; compatibility issues could affect untested RPC paths or service interactions.

** QA Recommendation:** Run automated tests and targeted integration checks for gRPC-dependent services. Manual QA is limited but recommended for critical service-to-service flows; skipping it carries moderate risk.
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📥 Commits

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• go.mod

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📝 Walkthrough

Walkthrough

The indirect google.golang.org/grpc dependency in go.mod is upgraded from v1.81.0 to v1.82.1.

Changes

gRPC dependency update

Layer / File(s)	Summary
Update indirect gRPC requirement go.mod	The indirect google.golang.org/grpc requirement is bumped from v1.81.0 to v1.82.1.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: avasconcelos114

Poem

A rabbit hops through module rows,
And finds a newer gRPC flow.
One version up, the change is neat,
No other lines beneath its feet.
“Hop approved!” the bunny sings.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the dependency upgrade from grpc 1.81.0 to 1.82.1.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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