Publish
After the client established the connection with the broker, the client can publish messages to the broker.
Publish a message to the broker
Every publish request should specify topic
and payload
.
Example: publish a message "Bar" with topic "Foo" to the broker.
// Initialization of the blockClient
// Connect to the broker server
String topic = "Foo";
String payload = "Bar";
blockClient.publish(topic, MqttQoS.AT_LEAST_ONCE, criticalOption, payload); // publish request