v2.5.2

• Deprecated MQTTClient.Configuration.maxRetryAttempts as it is no longer used
• Activate pingeq hander on channel handler activation not addition

v2.5.1

• Fixed issue where automatic PINGREQ messages were never sent

v2.5.0

Minor version changes

• Add TSTLSVersion an enum for TLS version used by NIOTransportServices.
• new versions of TSTLSConfiguration.init use new enum TSTLSVersion. Deprecated old versions using tls_protocol_version_t.

Patch version changes

• Combined PingreqHandler, ByteToMQTTMessageDecoder and MQTTEncodeHandler into one channel handler MQTTMessageHandler.

Other changes

• Renamed sanity.sh to validate.sh
• Added CONTRIBUTING.md
• Added CODE_OF_CONDUCT.md
• Added SECURITY.md

v2.4.0

Minor Release Changes

• Added new TSTLSConfiguration.init that allows for p12 and DER loading.
• Close connection as soon as we receive a DISCONNECT packet from the server

Patch Release Changes

• Fix issue where inflight PUBLISH messages were being deleted on server disconnection

Other changes

• Enable writing CodeCoverage result to Codecov in CI
• Enable running tests in macOS CI
• Fixed certificate generation scripts
• Add additional tests

v2.3.1

• Merged individual task handlers into one task handler MQTTTaskHandler.

v2.3.0

Minor release changes

• Added AsyncSequence for listening for PUBLISH messages
• Added v5 publish listeners that filter on subscription identifier
• Added shutdownListener to catch when the client is shutdown (used by AsyncSequence publish listeners)
• Error on deinit of MQTTClient that hasn't been shutdown
• Added async shutdown function.

Other changes

Use XCTestExpression in tests instead of Thread.sleep
Require SwiftFormat to be run on PRs

v2.2.0

Add support for async/await. All functions that returned an EventLoopFuture now have a async equivalent.

v2.1.1

• Don't create NIOSSLClientTLSProvider if SSL disabled. Fixes connection issue with raw IP address

v2.1.0

• MQTT v5: send identifier not found for unhandled PUBREL and PUBREC packets
• Add MQTTClient.V5.auth to re-authenticate a client with the server
• Don't output reason and properties for PUBACK, PUBREC, PUBREL, PUBCOMP, AUTH, DISCONNECT packets when reason is success and there no properties.
• Log messages as trace instead of debug. Add server connection/disconnection log messages.

v2.0.0

• Add Support for MQTT v5.0.
  • Set version in Configuration. Can access v5.0 specific features via MQTTClient.v5 .
  • Add v5 features like properties and reasons.
  • Extract server parameters from CONNACK properties.
• Replaced FreeRTOS coreMQTT packet serialisation C library with Swift.
• Combined error types. Errors are either MQTTError for client issues or MQTTPacketError for packet validation issues.
• Fix packet resend policy. Now PUBLISH and PUBREL packets are stored while waiting for a response from the server. If the server connection is lost the packets still waiting for a response are resent.
• Add PUBLISH/SUBSCRIBE packet validation to ensure we aren't sending bad packets to server.
• Add MQTT v3.1.1 connection return codes.
• Add webSocketMaxFrameSize configuration parameter.