v1.61.1: Release 1.61.1

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Bug Fixes

• server: wait to close connection until incoming socket is drained (with timeout) to prevent data loss on client-side (#​6977)
  • Special Thanks: @​s-matyukevich for discovering the root cause

v1.61.0: Release 1.61.0

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New Features

• resolver: provide method, AuthorityOverrider, to allow resolver.Builders to override the default authority for a ClientConn. (EXPERIMENTAL) (#​6752)
  • Special Thanks: @​Aditya-Sood
• xds: add support for mTLS Credentials in xDS bootstrap (gRFC A65) (#​6757)
  • Special Thanks: @​atollena
• server: add grpc.WaitForHandlers ServerOption to cause Server.Stop to block until method handlers return. (EXPERIMENTAL) (#​6922)

Performance Improvements

• grpc: skip compression of empty messages as an optimization (#​6842)
  • Special Thanks: @​jroper
• orca: use atomic pointer to improve performance in server metrics recorder (#​6799)
  • Special Thanks: @​danielzhaotongliu

Bug Fixes

• client: correctly enable TCP keepalives with OS defaults on windows (#​6863)
  • Special Thanks: @​mmatczuk
• server: change some stream operations to return UNAVAILABLE instead of UNKNOWN when underlying connection is broken (#​6891)
  • Special Thanks: @​mustafasen81
• server: fix GracefulStop to block until all method handlers return (v1.60 regression). (#​6922)
• server: fix two bugs that could lead to panics at shutdown when using NumStreamWorkers (EXPERIMENTAL). (#​6856)
• reflection: do not send invalid descriptors to clients for files that cannot be fully resolved (#​6771)
  • Special Thanks: @​jhump
• xds: don't fail channel/server startup when xds creds is specified, but bootstrap is missing certificate providers (#​6848)
• xds: Atomically read and write xDS security configuration client side (#​6796)
• xds/server: fix RDS handling for non-inline route configs (#​6915)

v1.60.1

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Bug Fixes

• server: fix two bugs that could lead to panics at shutdown when using NumStreamWorkers (experimental feature).

v1.60.0: Release 1.60.0

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Security

• credentials/tls: if not set, set TLS MinVersion to 1.2 and CipherSuites according to supported suites not forbidden by RFC7540.
  • This is a behavior change to bring us into better alignment with RFC 7540.

API Changes

• resolver: remove deprecated and experimental ClientConn.NewServiceConfig (#​6784)
• client: remove deprecated grpc.WithServiceConfig DialOption (#​6800)

Bug Fixes

• client: fix race that could cause a deadlock while entering idle mode and receiving a name resolver update (#​6804)
• client: always enable TCP keepalives with OS defaults (#​6834)
• credentials/alts: fix a bug preventing ALTS from connecting to the metadata server if the default scheme is overridden (#​6686)
  • Special Thanks: @​mjamaloney

Behavior Changes

• server: Do not return from Stop() or GracefulStop() until all resources are released (#​6489)
  • Special Thanks: @​fho

Documentation

• codes: clarify that only codes defined by this package are valid and that users should not cast other values to codes.Code (#​6701)

v1.59.0: Release 1.59.0

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Behavior Changes

• balancer: grpc will switch to case-sensitive balancer names soon; log a warning if a capital letter is encountered in an LB policy name (#​6647)
• server: allow applications to send arbitrary data in the grpc-status-details-bin trailer (#​6662)
• client: validate grpc-status-details-bin trailer and pass through the trailer to the application directly (#​6662)

New Features

• tap (experimental): Add Header metadata to tap handler (#​6652)
  • Special Thanks: @​pstibrany
• grpc: channel idleness enabled by default with an idle_timeout of 30m (#​6585)

Documentation

• examples: add an example of flow control behavior (#​6648)

Bug Fixes

• xds: fix hash policy header to skip "-bin" headers and read content-type header as expected (#​6609)