The Wolfram Language supports efficient publish-subscribe communication, brokered either in the Wolfram Cloud (through channelbroker-mqtt.wolframcloud.com) or elsewhere. Channels can be used for asynchronous communication, either between Wolfram Language sessions on the cloud or desktop, or with external systems (with data provided in a JSON format).

ChannelObject — symbolic representation of a communication channel

$ChannelBase — base URL of default broker to use for channel communications

FindChannels — find available channels

CreateChannel — create a new communication channel on the server

DeleteChannel — delete a communication channel on the server

ChannelListen — set up a listener to specify what to do whenever a message arrives

ChannelListener  ▪  RemoveChannelListener

ChannelListeners — list of currently active channel listeners

ChannelSend — send an expression as a message to a specified channel

ChannelSubscribers — list of users currently subscribed to a channel

RemoveChannelSubscribers — removes currently active channel subscribers

ChannelReceiverFunction — function to execute in the cloud for each received message

Channel Options

ChannelBrokerAction — action to execute server-side in addition to routing a message

Permissions — permissions for reading, writing, and changing the channel