Mqtt

Objective Setting up the Node-RED editor within IBM Cloud Sending messages via MQTT to a Node-RED MQTT node You can request access to IBM Cloud at the following URL: IBM Cloud Afterwards you can create a new ‘Resource’ here. Within the catalog, various cloud resources (applications) are made available to us. We select Node-RED. This application provides us with the Node-RED editor within IBM Cloud. After entering the initial data, we have to wait a brief moment until the application is installed with the desired settings in the cloud and made available to us. ...

MQTT Summary [Source: Wikipedia] MQTT (Message Queuing Telemetry Transport) is an open messaging protocol for machine-to-machine communication (M2M) that enables the transmission of telemetry data in the form of messages between devices, e.g. sensors. The Internet Assigned Numbers Authority (IANA) reserves ports 1883 and 8883 for MQTT. MQTT messages can be encrypted using the TLS protocol. The MQTT specification distinguishes between TCP/IP-based and non-TCP/IP networks. MQTT is a client-server protocol. Clients send messages with a topic to the server (“broker”) after establishing a connection; the topic hierarchically classifies the message, for example Kitchen/Fridge/Temperature or Car/Wheel/3/AirPressure. Clients can subscribe to these topics, and the server forwards received messages to the respective subscribers. ...

MQTT (Message Queue Telemetry Transport) is an open messaging protocol for machine-to-machine communication (M2M) that enables the transmission of telemetry data in the form of messages between devices, despite high latency or constrained networks. Corresponding devices range from sensors and actuators, mobile phones, embedded systems in vehicles or laptops to fully developed computers. [Wikipedia] The information about the specification listed below comes, among other sources, from the current MQTT specification of IBM. ...