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| # MQTT client library | |
| ## What's included? | |
| See the [README.md](./README.md) for a complete description of the MQTT client library. | |
| ## Known issues | |
| | Problem | Workaround | | |
| | ------- | ---------- | | |
| | IAR 9.40.2 toolchain throws build errors on Debug mode if the application explicitly includes the *iar_dlmalloc.h* file | Add `--advanced_heap` to LDFLAGS in the application Makefile. | | |
| | MQTT connection fails over TLS 1.3 with brokers that enabled session tickets. For example, MQTT Eclipse broker ("mqtt.eclipseprojects.io") | Currently there is no workaround as there is a bug in Mbed TLS library in session ticket parsing logic. | | |
| ## Changelog | |
| ### v4.6.1 | |
| - Minor bug fixes | |
| ### v4.6.0 | |
| - Added support for CY8CEVAL-062S2-CYW955513SDM2WLIPA kit | |
| ### v4.5.0 | |
| - Added support for CYW955913EVK-01 kit | |
| ### v4.4.0 | |
| - Added new APIs to start and stop MQTT keep-alive, and to get the socket handle associated with MQTT connection. | |
| ### v4.3.0 | |
| - Supports Mbed TLS version 3.4.0 | |
| - Supports MQTT connection with TLS version 1.3 | |
| - Added support for CY8CEVAL-062S2-CYW43022CUB kit | |
| ### v4.2.0 | |
| - Minor bug fixes. | |
| - Added support for KIT_XMC72_EVK_MUR_43439M2 kit | |
| ### v4.1.0 | |
| - Added support for KIT_XMC72_EVK kit | |
| ### v4.0.0 | |
| - Updated FreeRTOS-specific code to make it generic | |
| - Added new APIs and updated signature of some of the old APIs to support multicore virtualization | |
| - Enabled multi-core, virtual API support for the following MQTT APIs: | |
| - `cy_mqtt_get_handle` | |
| - `cy_mqtt_register_event_callback` | |
| - `cy_mqtt_deregister_event_callback` | |
| - `cy_mqtt_publish` | |
| - `cy_mqtt_subscribe` | |
| - `cy_mqtt_unsubscribe` | |
| - Updated documentation | |
| This version of the library is not backward-compatible with pervious library versions. | |
| ### v3.4.2 | |
| - Removed unwanted dependencies from the deps folder | |
| - Added support for CM0P core | |
| - Minor documentation updates | |
| ### v3.4.1 | |
| - Documentation updates | |
| ### v3.4.0 | |
| - Added support for CY8CEVAL-062S2-MUR-43439M2 kit | |
| ### v3.3.0 | |
| - Added support for CYW943907AEVAL1F and CYW954907AEVAL1F kits | |
| ### v3.2.0 | |
| - Added support for secured kits (for example: CY8CKIT-064S0S2-4343W) | |
| - Integrated with secure sockets PKCS support | |
| - Added support for Low power assistant (LPA) applications | |
| - Upgraded the library to integrate with the wifi-mw-core 3.1.1 library version | |
| - General bug fixes | |
| ### v3.1.1 | |
| - Documentation updates | |
| - Upgraded the library to integrate the with wifi-mw-core 3.x library version for any cloud | |
| - Introduced ARMC6 compiler support for any cloud build | |
| ### v3.1.0 | |
| - Performance improvements | |
| - Documentation updates | |
| ### v3.0.0 | |
| - Supports QoS-2 | |
| - Fully compliant with MQTT spec v3.1.1 | |
| - Provides simplified C APIs | |
| - Integrated with the latest AWS IoT Device C SDK library version #202011.00 | |
| - This version of the library is not backward-compatible with pervious library versions | |
| ### v2.1.0 | |
| - Introduced asynchronous receive logic | |
| - Added support for SAS token-based authentication for Azure broker connection | |
| ### v2.0.0 | |
| - Changes to adapt to ModusToolbox™ 2.2.0 flow and any cloud's support for multiple Wi-Fi interfaces - STA, softAP, and concurrent STA+softAP mode | |
| ### v1.0.1 | |
| - Code snippets added to the documentation | |
| ### v1.0.0 | |
| - Initial release of the MQTT client library | |
| ### Supported software and tools | |
| This version of the library was validated for compatibility with the following software and tools: | |
| | Software and tools | Version | | |
| | :--- | :----: | | |
| | ModusToolbox™ software environment | 3.2 | | |
| | ModusToolbox™ device configurator | 4.20 | | |
| | GCC compiler | 11.3.1 | | |
| | IAR compiler | 9.40.2 | | |
| | Arm® compiler 6 | 6.16 | |