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

Release 1.75.1

Bug Fixes

• transport: Fix a data race while copying headers for stats handlers in the std lib http2 server transport. (#8519)
• xdsclient:
  • Fix a data race caused while reporting load to LRS. (#8483)
  • Fix regression preventing empty node IDs when creating an LRS client. (#8483)
• server: Fix a regression preventing streams from being cancelled or timed out when blocked on flow control. (#8528)

Release 1.75.0

Behavior Changes

• xds: Remove support for GRPC_EXPERIMENTAL_XDS_FALLBACK environment variable. Fallback support can no longer be disabled. (#8482)
• stats: Introduce DelayedPickComplete event, a type alias of PickerUpdated. (#8465)
  • This (combined) event will now be emitted only once per call, when a transport is successfully selected for the attempt.
  • OpenTelemetry metrics will no longer have multiple "Delayed LB pick complete" events in Go, matching other gRPC languages.
  • A future release will delete the PickerUpdated symbol.
• credentials: Properly apply grpc.WithAuthority as the highest-priority option for setting authority, above the setting in the credentials themselves. (#8488)
  • Now that this WithAuthority is available, the credentials should not be used to override the authority.
• round_robin: Randomize the order in which addresses are connected to in order to spread out initial RPC load between clients. (#8438)
• server: Return status code INTERNAL when a client sends more than one request in unary and server streaming RPC. (#8385)
  • This is a behavior change but also a bug fix to bring gRPC-Go in line with the gRPC spec.

New Features

• dns: Add an environment variable (GRPC_ENABLE_TXT_SERVICE_CONFIG) to provide a way to disable TXT lookups in the DNS resolver (by setting it to false). By default, TXT lookups are enabled, as they were previously. (#8377)

Bug Fixes

• xds: Fix regression preventing empty node IDs in xDS bootstrap configuration. (#8476)
  • Special Thanks: @​davinci26
• xds: Fix possible panic when certain invalid resources are encountered. (#8412)
  • Special Thanks: @​wooffie
• xdsclient: Fix a rare panic caused by processing a response from a closed server. (#8389)
• stats: Fix metric unit formatting by enclosing non-standard units like call and endpoint in curly braces to comply with UCUM and gRPC OpenTelemetry guidelines. (#8481)
• xds: Fix possible panic when clusters are removed from the xds configuration. (#8428)
• xdsclient: Fix a race causing "resource doesn not exist" when rapidly subscribing and unsubscribing to the same resource. (#8369)
• client: When determining the authority, properly percent-encode (if needed, which is unlikely) when the target string omits the hostname and only specifies a port (grpc.NewClient(":<port-number-or-name>")). (#8488)

Release 1.74.3

Bug Fixes

• xds: Fix a regression preventing empty node IDs in the bootstrap configuration. (#8476 , #8483)
• xdsclient: Fix a data race caused while reporting load to LRS. (#8483)
• server: Fix a regression preventing streams from being cancelled or timed out when blocked on flow control. (#8528)

• b4dc263 Change version to 1.75.1 (#8559)
• 1fffee7 Cherry-pick #8528 to v1.75.x (#8555)
• a52e42b Cherry pick #8483 into v1.75.x (#8541)
• 369c9aa Cherry-pick #8519 to v1.75.x (#8530)
• 7269d5f Change version to 1.75.1-dev (#8494)
• b9788ef Change version to 1.75.0 (#8493)
• 2bd74b2 credentials: fix behavior of grpc.WithAuthority and credential handshake prec...
• 9fa3267 xds: remove xds client fallback environment variable (#8482)
• 62ec29f grpc: Fix cardinality violations in non-client streaming RPCs. (#8385)
• 85240a5 stats: change non-standard units to annotations (#8481)
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