7.0.0

Breaking Changes

• client::async_recv() CompletionHandler signature is updated to void(error_code, packet_variant). #281
  • packet_variant has one of std::monostate, [v3_1_1|v5]::publish_packet, [v3_1_1|v5]::disconnect_packet, or v5::auth_packet.
• Renamed the typename from pubres_t to pubres_type for consistency. #280
• Re-designed error_code handling to align with Boost.Asio's approach. #266, #270, #271, #272, #273, #299
  • All async functions have the Completion Handler signature as void(async_mqtt::error_code, ...), except void().
    • This ensures compatibility with other Boost.Asio based libraries, and Boost.Asio itself.

Other Updates

• Added footprint example. #304
• Added async_auth() to client. #303
• Added reconnect code to examples. #302
• Fixed dangling reference on underlying_handshake. #301
• Added bulk read functionality. #300
• Refined CI. #295
• Fixed async_acquire_unique_packet_id_wait_until() cancel support. #292
• Refined packet reading. Fixed Header and the first byte of Remaining Length are read all at once. #291
• Fixed set_pingreq_send_interval_ms() value 0 treatment. #290
• Fixed non-existent topic alias treatment. #289
• Fixed connack packet sending condition on error. #288
• Fixed async_recv after cancel behaving invalidly. #287
• Fixed cancel treatment. #286
• Added using recycling allocator option for the broker. #283
• Added separate compilation mode support. #282
  • To enable separate compilation mode, define ASYNC_MQTT_SEPARATE_COMPILATION.
• Added bind_cancellation_slot test. #268
• Supported PINGREQ overriding by ServerKeepAlive. #271
• Refined tests. #269, #274, #275, #287, #288, #289, #290, #296, #297
• Refined documents. #276, #292, #305, #306, #307
• Refined tools (bench). #278
• Added endpoint getter to client. #279