AsyncAPI channel · PubNub
· PubNub Realtime Streaming API
message-action
Message action events delivered when a reaction or action (e.g. emoji
reaction, read receipt) is added to or removed from a previously published
message on a channel.
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
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