Bump google.golang.org/grpc from 1.79.3 to 1.82.1

[dependabot]

Bumps google.golang.org/grpc from 1.79.3 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)

Release 1.81.0

Behavior Changes

• balancer/rls: Switch gauge metrics to asynchronous emission (once per collection cycle) to reduce telemetry noise and align with other gRPC language implementations. (#8808)

Dependencies

... (truncated)

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 is an isolated indirect gRPC dependency upgrade, but it includes authorization-related security fixes and behavioral changes affecting RPC communication.
Regression Risk: Moderate due to shared dependency behavior changes in RPC path validation, header sizing, and balancer registry handling.
** QA Recommendation:** Run automated integration and RPC/xDS authorization tests; limited manual QA is recommended, though skipping it carries moderate regression risk.

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📒 Files selected for processing (1)

• go.mod

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📝 Walkthrough

Walkthrough

Two indirect Go module requirements are updated in go.mod; all other module requirements remain unchanged.

Changes

Indirect dependency updates

Layer / File(s)	Summary
Update indirect module requirements go.mod	Newer versions replace the existing google.golang.org/genproto/googleapis/rpc and google.golang.org/grpc pins.

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

Suggested reviewers: avasconcelos114, nang2049

Poem

A bunny hops through module lines,
Two version carrots freshly shines.
Genproto and gRPC grow,
While all the other pins stay low.
“Neat!” says hare, and bounds away.

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