Release 1.78.0
- client: Reject target URLs containing unbracketed colons in the hostname in Go version 1.26+. (#8716)
- Special Thanks: @neild
- stats/otel: Add backend service label to wrr metrics as part of A89. (#8737)
- stats/otel: Add subchannel metrics (without the disconnection reason) to eventually replace the pickfirst metrics. (#8738)
- client: Wait for all pending goroutines to complete when closing a graceful switch balancer. (#8746)
- Special Thanks: @twz123
- transport/client : Return status code
Unknownon malformed grpc-status. (#8735) - client: Add
experimental.AcceptCompressorsso callers can restrict thegrpc-accept-encodingheader advertised for a call. (#8718)- Special Thanks: @iblancasa
- xds: Fix a bug in
StringMatcherwhere regexes would match incorrectly when ignore_case is set to true. (#8723) - xds/resolver:
- Drop previous route resources and report an error when no matching virtual host is found.
- Only log LDS/RDS configuration errors following a successful update and retain the last valid resource to prevent transient failures. (#8711)
- client:
- Change connectivity state to CONNECTING when creating the name resolver (as part of exiting IDLE).
- Change connectivity state to TRANSIENT_FAILURE if name resolver creation fails (as part of exiting IDLE).
- Change connectivity state to IDLE after idle timeout expires even when current state is TRANSIENT_FAILURE.
- Fix a bug that resulted in
OnFinishcall option not being invoked for RPCs where stream creation failed. (#8710)
- xdsclient: Fix a race in the xdsClient that could lead to resource-not-found errors. (#8627)
- mem: Round up to nearest 4KiB for pool allocations larger than 1MiB. (#8705)
- Special Thanks: @cjc25
Release 1.77.0
- mem: Replace the
Readerinterface with a struct for better performance and maintainability. (#8669)
- balancer/pickfirst: Remove support for the old
pick_firstLB policy via the environment variableGRPC_EXPERIMENTAL_ENABLE_NEW_PICK_FIRST=false. The newpick_firsthas been the default sincev1.71.0. (#8672)
- xdsclient: Fix a race condition in the ADS stream implementation that could result in
resource-not-founderrors, causing the gRPC client channel to move toTransientFailure. (#8605) - client: Ignore HTTP status header for gRPC streams. (#8548)
- client: Set a read deadline when closing a transport to prevent it from blocking indefinitely on a broken connection. (#8534)
- Special Thanks: @jgold2-stripe
- client: Fix a bug where default port 443 was not automatically added to addresses without a specified port when sent to a proxy.
- Setting environment variable
GRPC_EXPERIMENTAL_ENABLE_DEFAULT_PORT_FOR_PROXY_TARGET=falsedisables this change; please file a bug if any problems are encountered as we will remove this option soon. (#8613)
- Setting environment variable
- balancer/pickfirst: Fix a bug where duplicate addresses were not being ignored as intended. (#8611)
- server: Fix a bug that caused overcounting of channelz metrics for successful and failed streams. (#8573)
- Special Thanks: @hugehoo
- balancer/pickfirst: When configured, shuffle addresses in resolver updates that lack endpoints. Since gRPC automatically adds endpoints to resolver updates, this bug only affects custom LB policies that delegate to
pick_firstbut don't set endpoints. (#8610) - mem: Clear large buffers before re-using. (#8670)
- transport: Reduce heap allocations to reduce time spent in garbage collection. (#8624, #8630, #8639, #8668)
- transport: Avoid copies when reading and writing Data frames. (#8657, #8667)
- mem: Avoid clearing newly allocated buffers. (#8670)
- outlierdetection: Add metrics specified in gRFC A91. (#8644)
- Special Thanks: @davinci26, @PardhuKonakanchi
- stats/opentelemetry: Add support for optional label
grpc.lb.backend_servicein per-call metrics (#8637) - xds: Add support for JWT Call Credentials as specified in gRFC A97. Set environment variable
GRPC_EXPERIMENTAL_XDS_BOOTSTRAP_CALL_CREDS=trueto enable this feature. (#8536)- Special Thanks: @dimpavloff
- experimental/stats: Add support for up/down counters. (#8581)
Release 1.76.0
- Minimum supported Go version is now 1.24 (#8509)
- Special Thanks: @kevinGC
- client: Return status
INTERNALwhen a server sends zero response messages for a unary or client-streaming RPC. (#8523) - client: Fail RPCs with status
INTERNALinstead ofUNKNOWNupon receiving http headers with status 1xx andEND_STREAMflag set. (#8518)- Special Thanks: @vinothkumarr227
- pick_first: Fix race condition that could cause pick_first to get stuck in
IDLEstate on backend address change. (#8615)
- credentials: Add
credentials/jwtpackage providing file-based JWT PerRPCCredentials (A97). (#8431)- Special Thanks: @dimpavloff
- client: Improve HTTP/2 header size estimate to reduce re-allocations. (#8547)
- encoding/proto: Avoid redundant message size calculation when marshaling. (#8569)
- Special Thanks: @rs-unity
Release 1.72.3
- server: Fix a regression preventing streams from being cancelled or timed out when blocked on flow control. (https://github.com/grpc/grpc-go/pull/8528)
Release 1.73.1
- server: Fix a regression preventing streams from being cancelled or timed out when blocked on flow control. (https://github.com/grpc/grpc-go/pull/8528)
Release 1.75.1
- 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
- xds: Remove support for GRPC_EXPERIMENTAL_XDS_FALLBACK environment variable. Fallback support can no longer be disabled. (#8482)
- stats: Introduce
DelayedPickCompleteevent, a type alias ofPickerUpdated. (#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
PickerUpdatedsymbol.
- credentials: Properly apply
grpc.WithAuthorityas the highest-priority option for setting authority, above the setting in the credentials themselves. (#8488)- Now that this
WithAuthorityis available, the credentials should not be used to override the authority.
- Now that this
- 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.
- 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 tofalse). By default, TXT lookups are enabled, as they were previously. (#8377)
- 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
callandendpointin 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 1.74.2
- balancer: add
ExitIdlemethod toBalancerinterface. Earlier, implementing this method was optional. (#8367)
- xds: Remove the
GRPC_EXPERIMENTAL_ENABLE_LEAST_REQUESTenvironment variable that allows disabling the least request balancer with xDS. Least request was made available by default with xDS in v1.72.0. (#8248)- Special Thanks: @atollena
- server: allow 0s grpc-timeout header values, which older gRPC-Java versions could send. This restores the behavior of grpc-go before v1.73.0. (#8439)
- googledirectpath: avoid logging the error message
Attempt to set a bootstrap configuration...when creating multiple directpath channels. (#8419)
- transport: reduce heap allocations by pooling objects and avoiding method-to-closure conversions. (#8361)
- transport: reduce heap allocations by re-using
mem.Readerobjects. (#8360)
- examples: add examples to demonstrate enabling experimental metrics using the OpenTelemetry plugin. (#8388)
- Special Thanks: @vinothkumarr227