API Changes

• stats: Deprecate InPayload.Data and OutPayload.Data; they were experimental and will be deleted in the next release (#7121)

Behavior Changes

• codec: Remove handling of environment variable GRPC_GO_ADVERTISE_COMPRESSORS to suppress setting supported compressors in grpc-accept-encoding header. Compressors will always be advertised, as they have been by default for some time (#7203)

New Features

• resolver/dns: Add SetMinResolutionInterval to set the minimum interval at which DNS re-resolutions may occur (#6962)
  • Special Thanks: @HomayoonAlimohammadi
• peer/peer: Implement the fmt.Stringer interface for pretty printing Peer, and
• metadata/metadata: Implement the fmt.Stringer interface for pretty printing MD (#7137)
  • Special Thanks: @AnomalRoil

Performance Improvements

• client: Improve RPC performance by reducing work while holding a lock (#7132)

Bug Fixes

• transport/server: Display the proper timeout value when keepalive pings are not ack'd in time (#7038)
  • Special Thanks: @BatmanAoD
• channelz: Fix bug that was causing the subchannel's target to be unset (#7189)
• stats: Fix bug where peer was not set in context when calling stats handler for OutPayload, InPayload, and End (#7096)

Dependencies

• deps: Remove dependency on deprecated github.com/golang/protobuf module (#7122)

Documentation

• grpc: Deprecate WithBlock, WithReturnConnectionError, FailOnNonTempDialError which are ignored by NewClient (#7097)
  • Special Thanks: @pellared
• grpc: Deprecate Dial and DialContext. These will continue to be supported throughout 1.x, but are deprecated to direct users to NewClient (See #7090 for more information)
• examples: Add custom lb example (#6691)