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CloudNative.CloudEvents

2.9.046M downloads/mocloudevents/sdk-csharp ↗New releases in your daily digest, changelog included.

CNCF CloudEvents SDK

Last release 3 months ago
04 Jul 2026
Release timing varies
gaps range from 3 weeks to 1.9 years
Some releases are documented
notes for 14 of 24 stable releases
Nothing withdrawn
no release was ever pulled
8 years old
24 releases · first in 2018

Release timeline

24 releases since 2018

20182020202220242026

Releases

2.9.04 Jul 2026
Add explicit .NET 10 target to all packages
Changes since 2.8.0:

Add explicit .NET 10 target to all packages

Remove .NET Standard 2.1 target from all packages

Release CloudNative.CloudEvents.Kafka as 3.9.0, bumping the major
version to reflect adopting a new major Confluence.Kafka version.

Changed CloudEvents.Amqp dependency from AMQPNetLite and
AMQPNetLite.Serialization to just AMQPNetLite.Core

Performance improvements in both JSON packages

Dependency updates:

AMQPNetLite.Core: Effectively 2.4.11 => 2.5.3

Apache.Avro: 1.11.3 => 1.12.1

Confluent.Kafka: 1.93 => 2.14.2

Google.Protobuf: 3.27.3 => 3.35.1

MQTTnet: 4.3.6.1152 => 4.3.7.1207

Newtonsoft.Json: 13.0.3 => 13.0.4

Dependencies only for .NET Standard 2.0:

Microsoft.AspNetCore.Http: 2.1.34 => 2.3.11

System.Memory: 4.5.5 => 4.6.3

System.Text.Encodings.Web: 8.0.0 => 10.0.9

System.Text.Json: 8.0.4 => 10.0.9

Note on the removal of .NET Standard 2.1: we don't expect this to break users,
although it may mean additional dependencies due to falling back to .NET Standard 2.0.
Please file an issue if this causes problems for you, and we'll consider reinstating
the target.
Open source →
2.8.07 Aug 2024
Release 2.8.0 Changes since 2.7.1:

From the same repository

cloudevents/sdk-csharp

Release 2.8.0
Changes since 2.7.1:

Add an explicit .NET 8 target to all packages.
Removed dependencies that are already included in the framework, for suitable targets.
Use a framework reference to Microsoft.AspNetCore.App instead of package frameworks,
for the .NET 8 target
Release CloudNative.CloudEvents.Mqtt as 3.8.0, bumping the major
version to reflect adopting MQTTnet version 4.3.6.1152.
Fixes #269.
Other dependency updates:
- AMQPNetLite and AMQPNetLite.Serialization: 2.4.2 => 2.4.11
- Apache.Avro: 1.11.1 => 1.11.3
- Newtonsoft.Json: 13.0.2 => 13.0.3
- Google.Protobuf: 3.22.0 => 3.27.3
- Confluent.Kafka: 1.6.3 => 1.9.3
  - See #297 for
    consideration of a bump to 2.x.
- Only for netstandard2.0 and netstandard2.1 targets:
  - System.Text.Encodings.Web: 6.0.0 => 8.0.0
  - System.Text.Json: 5.0.2 => 8.0.4

Additional notes

Add explicit .NET 8 target to all packages.
Removed dependencies that are already included in the framework, for suitable targets.
Use a framework reference to Microsoft.AspNetCore.App instead of package references, for the .NET 8 target
Release CloudNative.CloudEvents.Mqtt as 3.8.0, bumping the major version to reflect adopting MQTTnet version 4.3.6.1152. Fixes #269.
Other dependency updates:
- AMQPNetLite and AMQPNetLite.Serialization: 2.4.2 => 2.4.11
- Apache.Avro: 1.11.1 => 1.11.3
- Newtonsoft.Json: 13.0.2 => 13.0.3
- Google.Protobuf: 3.22.0 => 3.27.3
- Confluent.Kafka: 1.6.3 => 1.9.3
  - See #297 for consideration of a bump to 2.x.
- Only for netstandard2.0 and netstandard2.1 targets:
  - System.Text.Encodings.Web: 6.0.0 => 8.0.0
  - System.Text.Json: 5.0.2 => 8.0.4

Open source →

2.6.07 Mar 20232 sources agree

- Dependencies: system-level dependencies updated - The NuGet package now uses PackageLicenseExpression (but still includes the licence file as well).

Release 2.6.0

Changes since 2.5.1:

- Dependencies: system-level dependencies updated
- The NuGet package now uses PackageLicenseExpression (but still
includes the licence file as well).
Fixes ([#252](#252)).
- Regenerated protobuf schema using the original filename of
cloudevents.proto instead of ProtoSchema.proto. An additional
ProtoSchemaReflection class has been added purely for compatibility.
Fixes ([#256](#256)).

Signed-off-by: Jon Skeet <jonskeet@google.com>

Open source →

2.5.110 Nov 2022Security2 sources agree

…transitive dependency on a version containing vulnerabilities - Update Apache.Avro to 1.11.1

Release 2.5.1

Changes since 2.5.0:

- Dependencies: update dependencies in CloudNative.CloudEvents.Avro
- Add explicit dependency on Newtonsoft.Json 13.0.1 to avoid
transitive dependency on a version containing vulnerabilities
- Update Apache.Avro to 1.11.1

No APIs have changed. This is a patch release as the dependency
changes are very minor (but necessary to avoid vulnerabilities).

Signed-off-by: Jon Skeet <jonskeet@google.com>

Open source →

2.5.017 Oct 20222 sources agree

Dependencies: update dependencies in CloudNative.CloudEvents.AspNetCore:

Release 2.5.0

Changes since 2.4.0:

Dependencies: update dependencies in CloudNative.CloudEvents.AspNetCore:
- Remove dependency on Microsoft.AspNetCore.Mvc.Core (as we don't use it)
- Update dependency on Microsoft.AspNetCore.Http to 2.1.34
- Explicitly add dependency on System.Text.Encodings.Web 6.0.0 to avoid security issue in older version

No APIs have changed, but this is a minor release due to the significant dependency changes.

Open source →

2.4.08 Sept 2022

Feature: Implement underscore prefixes for AMQP (see history)

Release 2.4.0

Changes since 2.3.1:

Feature: Implement underscore prefixes for AMQP (see history) (#236)
Feature: Allow empty payloads in Kafka (#224)
Feature: Implement conversions to and from JObject/JsonElement in JsonEventFormatter (#234, part of #231)
Bug fix: Observe JSON serializer options in JsonEventFormat (#226, fixes #225)
Bug fix: Put AvroEventFormatter in the right namespace (#220, fixes #219)
Bug fix: Use content headers when parsing HTTP requests/responses (#222, fixes #221)
Bug fix: Perform release builds with ContinuousIntegrationBuild=true (#223, fixes #175)

Open source →

Additional notes

Feature: Implement underscore prefixes for AMQP (see below for more details) (#236)
Feature: Allow empty payloads in Kafka (#224)
Feature: Implement conversions to and from JObject/JsonElement in JsonEventFormatter (#234, part of #231)
Bug fix: Observe JSON serializer options in JsonEventFormat (#226, fixes #225)
Bug fix: Put AvroEventFormatter in the right namespace (#220, fixes #219)
Bug fix: Use content headers when parsing HTTP requests/responses (#222, fixes #221)
Bug fix: Perform release builds with ContinuousIntegrationBuild=true (#223, fixes #175)

The AMQP change is significant: the AMQP CloudEvent binding specification now recommends using cloudEvents_ instead of cloudEvents: as the prefix. The change in this release allows both prefixes to be parsed, and there are now three conversion extension methods:

ToAmqpMessageWithUnderscorePrefix - always uses cloudEvents_
ToAmqpMessageWithColonPrefix - always uses cloudEvents:
ToAmqpMessage - currently uses cloudEvents: but will use cloudEvents_ in a future release (planned for a March 2023 release)

The intention is to effectively give six months notice of a change in the default behavior.

Open source →

2.3.031 May 20222 sources agree

- Bug fix: BinaryDataUtilities.AsArray misbehavior with array segments ( #209 ) - Bug fix: Links within XML documentation corrected after spec repo ch

Release 2.3.0

Changes since 2.2.0:

- Bug fix: BinaryDataUtilities.AsArray misbehavior with array segments ([#209](#209))
- Bug fix: Links within XML documentation corrected after spec repo change
- Feature: Reject "data" as a context attribute name (spec has been clarified for this)
- Feature: Support Data content type inference in event formatters
- The JsonEventFormatter classes infer "application/json" for all data
- Feature: CloudNative.CloudEvents.Protobuf is now GA (same version as other packages)

Signed-off-by: Jon Skeet <jonskeet@google.com>

Open source →

2.1.121 Jul 2021

Bug fix (#177): dependency on the Nullable package was not declared with PrivateAssets=all, leading to that showing up as a dependency. This would bre

Bug fix (#177): dependency on the Nullable package was not declared with PrivateAssets=all, leading to that showing up as a dependency. This would break users who explicitly have a dependency on an older version of Nullable.

This fix shouldn't break anyone, as far as we're aware.

Open source →

2.1.014 Jul 2021

Nullable reference type annotations

New features:

Nullable reference type annotations (#170)
More batch support for HttpListener (#166)
CloudEvent.CopyToHttpResponse extension method (part of #148)

Other improvements:

More informative error message for non-CE HTTP requests (#165)

Bug fixes:

Various small XML docs typos (commit)
Don't set the content type to JSON in HttpListener when it's not set in the CloudEvent (commit)

Open source →