akka.net v1.5.71

1.5.71 August 26th, 2026

Akka.NET v1.5.71 is a maintenance release that fixes a Cluster Sharding private-replicator recovery bug, hardens MultiNodeTestRunner conductor reliability, flushes graceful Disassociate PDUs before transport force-close on shutdown, and resolves a handful of TestKit, ClusterClientDiscovery, and DotNetty fixes.

Akka.Cluster.Sharding

• Fix Cluster Sharding private replicator recovery: Fixes a bug where a Cluster Sharding private replicator could fail to recover its state, leaving shard state inconsistent after a coordinated shutdown / recovery cycle. Adds a ClusterShardingReplicatorResiliencySpec covering the recovery path.

Akka.Remote

• Backport #8421 to v1.5: flush graceful Disassociate PDUs before transport force-close on shutdown: Ensures in-flight graceful Disassociate control messages are flushed to the wire before the transport force-closes the connection on shutdown, preventing an abrupt teardown from silently dropping them.
• Akka.Remote: stop, don't restart, failed throttler children - Fixes #8433 and #8434: A failing outbound-throttler child is now stopped rather than restarted, avoiding an unbounded restart loop that could stall remote message throughput.
• Clarify DotNetty hostname validation direction: Clarifies the direction of the DotNetty hostname validation check so it validates the expected peer identity instead of the local endpoint.

Akka.Remote.TestKit (MultiNodeTestRunner)

• Backport MNTR conductor reliability to v1.5 - Backports #8431 and #8485: Hardens the MNTR BarrierCoordinator, Conductor, Controller, Player, and RemoteConnection against conductor-side races and disconnect handling, reducing multi-node spec flakiness.

Akka.TestKit

• Add AutoDilate metadata to TestKit timeouts: Adds AutoDilate dilation metadata to TestKit timeout expectations so dilated deadlines are correctly tracked and reported.
• Fix torn read in PromiseActorRef.GetPath that made Path return null: Fixes a torn read in PromiseActorRef.GetPath that could return null under concurrent access.
• Fix double-dilated timeout in ExpectMsgAsync<T>(Func<T, IActorRef, bool>, ...): Fixes a bug where the overload of ExpectMsgAsync that takes a predicate could apply its timeout dilation twice, causing spurious timeout failures.

Akka.Cluster.Tools

• Fix ClusterClientDiscovery: preserve contact-point subscriptions across rediscovery: Ensures ClusterClientDiscovery keeps its contact-point subscriptions alive across rediscovery cycles instead of dropping them.

Tests

• Make ClusterShardingQueriesSpec stats/region-state queries converge-then-assert (async): Hardens ClusterShardingQueriesSpec by making its stats and region-state query assertions wait for convergence before asserting, reducing CI flakiness.

1 contributor since release 1.5.70

COMMITS	LOC+	LOC-	AUTHOR
11	1376	468	Aaron Stannard

To see the full set of changes in Akka.NET v1.5.71, click here.

Changes:

• a5b9182 Release Akka.NET v1.5.71 (#8493)
• 885f466 Fix Cluster Sharding private replicator recovery (#8480)
• 04f10cb Backport #8421 to v1.5: flush graceful Disassociate PDUs before transport force-close on shutdown (#8487)
• 00c4f1a Backport MNTR conductor reliability to v1.5 (#8431 + #8485) (#8488)
• ea6d0f6 fix: add AutoDilate API approval updates for #8441 backport
• f46cbd5 Add AutoDilate metadata to TestKit timeouts (#8441)
• 70f2d1b Akka.Remote: stop, don't restart, failed throttler children (#8433, #8434) (#8437)
• 42bfb28 Fix torn read in PromiseActorRef.GetPath that made Path return null (#8436) [ #1, #2 ]
• 6713bb9 Fix double-dilated timeout in ExpectMsgAsync(Func<T, IActorRef, bool>, ...) (#8430)
• 5c6540c Fix ClusterClientDiscovery: preserve contact-point subscriptions across rediscovery (#8426)

See More

• 37798c8 Clarify DotNetty hostname validation direction (#8464)
• 850c173 fix: make ClusterShardingQueriesSpec stats/region-state queries converge-then-assert (async) (#8311)

This list of changes was auto generated.