Enhancements

• References librdkafka.redist 1.8.0. Refer to the librdkafka release notes for a complete list of changes, enhancements, fixes and upgrade considerations.
• Added the UseLatestVersion configuration property to the Protobuf, JSON Schema and Avro serdes (rayokota).

Fixes

• Breaking Change: Updated the message framing format used by the Protobuf serdes (ProtobufSerializer and ProtobufDeserializer) to be compatible with the Java Protobuf serdes (message indices now use zigzag encoding). Note: This framing encodes schema metadata, enabling integration with Confluent Schema Registry. To disable, set the UseDeprecatedFormat configuration property to true. (rayokota).

Security

• Upgraded the bundled zlib version from 1.2.8 to 1.2.11 in the librdkafka.redist NuGet package. The updated zlib version fixes CVEs: CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843 See https://github.com/edenhill/librdkafka/issues/2934 for more information.