|  | # Socket MQTT Library for Zephyr | 
|  |  | 
|  | # Copyright (c) 2018 Nordic Semiconductor ASA | 
|  | # SPDX-License-Identifier: Apache-2.0 | 
|  |  | 
|  | config MQTT_LIB | 
|  | bool "Socket MQTT Library Support" | 
|  | select NET_SOCKETS | 
|  | help | 
|  | Enable the Zephyr MQTT Library | 
|  |  | 
|  | if MQTT_LIB | 
|  |  | 
|  | module=MQTT | 
|  | module-dep=NET_LOG | 
|  | module-str=Log level for MQTT | 
|  | module-help=Enables mqtt debug messages. | 
|  | source "subsys/net/Kconfig.template.log_config.net" | 
|  |  | 
|  | config MQTT_KEEPALIVE | 
|  | int "Maximum number of clients Keep alive time for MQTT (in seconds)" | 
|  | default 60 | 
|  | help | 
|  | Keep alive time for MQTT (in seconds). Sending of Ping Requests to | 
|  | keep the connection alive are governed by this value. | 
|  |  | 
|  | config MQTT_LIB_TLS | 
|  | bool "TLS support for socket MQTT Library" | 
|  | help | 
|  | Enable TLS support for socket MQTT Library | 
|  |  | 
|  | config MQTT_LIB_WEBSOCKET | 
|  | bool "Websocket support for socket MQTT Library" | 
|  | help | 
|  | Enable Websocket support for socket MQTT Library. | 
|  |  | 
|  | config MQTT_LIB_CUSTOM_TRANSPORT | 
|  | bool "Custom transport support for socket MQTT Library" | 
|  | help | 
|  | Enable custom transport support for socket MQTT Library. | 
|  | User must provide implementation for transport procedure. | 
|  |  | 
|  | config MQTT_CLEAN_SESSION | 
|  | bool "MQTT Clean Session Flag." | 
|  | help | 
|  | When a client connects to a MQTT broker using a persistent session, | 
|  | the message broker saves all subscriptions. When the client | 
|  | disconnects, the message broker stores unacknowledged QoS 1 messages | 
|  | and new QoS 1 messages published to topics to which the client is | 
|  | subscribed. When the client reconnects to the persistent session, | 
|  | all subscriptions are reinstated and all stored messages are sent to | 
|  | the client. Setting this flag to 0 allows the client to create a | 
|  | persistent session. | 
|  |  | 
|  | endif # MQTT_LIB |