v13.2.1

• Fixed async socket close blocking problem. (#977)

v13.2.0

• Added locks for timers. (#973)
• Added logs. (#971)
• Added pre-opened socket support for client. (#970)
• Added example for TLS-SNI. (#961)
• Removed old TS code. (#952)
• Fixed invalid timing async_shutdown handler call. (#950)
• Improved cmake settings. (#948)

v13.1.0

• Added clear username and password functionality. (#944)
• Refined utility tools. (#941, #942)
• Refined log disabling. (#940)
• Fixed async_shutdown callback twice called problem. (#938)
• Refined error handlling. (#937)

v13.0.0

• <<<< breaking change >>>> Minimum boost requirement is 1.74.0. (#934)
• Modulized store. (#933)
• Improved compile times and memory consumption. (#931)
• Improved MQTT_STD_XXX behavior. (#929)
• Improved build system. (#927)

v12.1.0

• Improved CI (#930)
• Improved MQTT_STD_XXX support (#929)
• Removed boost.log include when MQTT_USE_LOG is off (#927)
• Removed async_force_disconnect() call from session_state (#925)
• Added authentication/authorization support (#896, #921, #923)
• Added running_in_this_thread() wrapper (#918)
• Fixed client_id setting bug (#917)
• Fixed resend_pubrel_ registration logic (#914)
• Fixed example code topic comparison (#913)
• Added a CLI(Command Line Interface) mqtt client tool (#911, #920)
• Added setup_socket() on client constructor (#909)
• Added defer wrapper (#908)
• Added dispatch wrapper (#907)
• Added comparison operators for properties (#906)
• Added missing dependencies in Package Configuration File (#903)
• Separated connect_handler functions (#895)
• Refine response_topic life management (#894)
• Made uuid gen to thread_local (#893)
• Supported request_response_information and response_topic (#892)
• Implemented client_id assignment when client send empty one (#891)
• Refined binary buffer operation (#890)
• Fixed correlation_data property (#889)
• Moved start_session() call after all handlers se. (#881)
• Added set options print for broker (#880)
• Added mutex for retains_ (#879)
• Added a performance meajure tool bench (#878, #882, #883, #884, #885, #886, #887, #898, #899, #900, #905)
• Fixed broker side qos2 exactly once logic (#874)
• Added publish handled QoS2 packet id getter and restore (#873)

v12.0.0

• Improved exampless (#870)
• Fixed example broker's invalid sync connack call (#869)
• Added no CONNACK sending mode to the example broker (#869)
• Added posting code to acceptors (#867)
• Added io_context and threads setting options for example broker (#866, #871, #872)
• Fixed moved from object access (#865)
• <<<< breaking change >>>> Removed ioc_con() and ioc_accept() (#866)
• <<<< breaking change >>>> Unified automatic async/sync choosing flag. (#857, #862)
  endppoint constructor 4th parameter async_operation is used.
  set_async_operation() can overwrite the async_operation.
  It should be called before sending any packets.
• Implemented clean shutdown (WS TLS TCP) (#849, 860, #863, #864)
• Improved build system (#859)
• Added DISCONNECT with session taken over reason code (#847)
• Improved tests (#845, #846, #852)
• Fixed invalid maximum_qos (2) sending (#844)
• Added multi thread support for example broker (#842, #855, #866)
• Replaced example broker's API call from sync to async (#842)
• Replaced use_certificate_file() with use_certificate_chain_file() to support both server cert and server - intermediate CA cert (#841)
• <<<< breaking change >>>> Added async_force_disconnect(). force_disconnect() is removed from async_client (#840, #868)
• Added will delay interval support (#839)
• Fixed async_handler_t calling timing (#836)
• Added BOOST_ASIO_NO_TS_EXECUTORS support (#830)
• Fixed async_unsuback() argument mismatch (#828)
• Added receive maximum support(#825, #835)
• Fixed QoS2 packet handling problem (#824)
• Refined async test mechanism. MQTT_ORDERED() macro is introcuded (#822, #823)
• Added maximum packet size support (#821, #826, #834))

v11.1.0

• Added Topic Alias Maximum setting functionality. (#816, #817, #818)

v11.0.0

• Added examples. (#812)
• Added automatic topic alias management. See https://github.com/redboltz/mqtt_cpp/wiki/automatic-topic-alias-management (#812)
• <<<< breaking change >>>> Replaced boost type erasure with virtual functions with inline. (#810)

v10.0.0

• Fixed namespace qualifing. (#808)
• Added host port setter. (#802)
• Improved logger performance. (#798, #799)
• Improved CI. (#796, #801)
• Applied boost asio stackless coroutine for parsing process. (#794)
• Fxied constexpr. (#793)
• Improved tests. (#789)
• Added lifetime query for the buffer. (#787)
• Refined examples. (#785)
• Fixed topic alias. (#783)
• Added certificate update support for the broker. (#781)
• Improved packet_id allocation. (#778)
• Removed copy. (#774)
• Added command line options for the broker. (#772)
• Fixed the broker error handling. (#769)
• Improved session expiry process. (#767)
• Refined error checking. (#766, #770)
• Fixed invalid assertion checking. (#761)
• Added packet id exhausted queuing support for the broker. (#757)
• Fixed the broker crush. (#754)
• <<<< breaking change >>>> Added shared subscription support. (#752, #759, #764, #765)
• Fixed invalid iterator operation on the broker. (#750)
• Removed unused files. (#748)
• Re-organized the test tree. (#747)

v9.0.0

• Added Websocket sub-ptorocol. (#735)
• Added BOOST_ASIO_NO_DEPRECATED to CI. (#734, #745)
• Added test timeout. (#733)
• Added Message Expiry Interval support to test_broker. (#731, #732, #736)
  • NOTE: client side is not supported yet.
• Added inflight message resending functionality for test_broker. (#730)
  • NOTE: client side already have the functionality.
• Added payload_as_buffer() for publish message. (#727)
• <<<< breaking change >>>> Supported scattered payload publish. (#723, #724)
  • NOTE: The return type of payload() has been changed. Ues payload_as_buffer().
• Impropve examples. (#722)
• Fixed Boost.Test include file. (#721)
• Improved CI. (#718)
• Fixed session expiry. (#700)
• Added Subscription Identifier support. (#683)
• Added NL(No Local) support. (#682)
• Added tests. (#680)
• Added subscription update. (#678, #679)
• Supported alternative TLS library. (#673)
• Added wildcard support to test_broker. (#671, #674, #681, #685, #687, #688, #689, #691, #693, #694, #695, #696, #698, #699, #707, #713, #715, #717, #742)
• Fixed compile error on Boost 1.74.0. (#670)
• Fixed namespace qualification. (#667, #668, #725, #726)
• Fixed warnings. (#665, #677)
• Improved client connect function. (#664)
• Added Topic Alias support. (#660, #666)
• Added strand_wrap for timeout code. (#659)
• <<<< breaking change >>>> Fixed error code. (#658)
• Added Session Expiry Interval functionality. (#657)
• Added MQTT_USE_LOG to enable logging. (#656)
• Improved output stream operator. (#655)
• Fixed user name and password empty case handling. (#654)