Locally published topics do not appear to retain

[pklitscher]

I am sure I am missing something very obvious here but for the life of me I cannot get locally published messages to retain.

I have setup the broker on a ESP8266 NodeMcu. I have connected to the broker using MQTT explorer . Everything is working great.

However, when I try to publish a retained message locally (from the ESP8266) it is not retained. It will appear in the explorer but if I disconnect and connect again it is gone. Using virtual bool publish(String topic, String data, uint8_t qos=0, uint8_t retain=0); If I publish a retained message from MQTT explorer (i.e. button2/state: OFF) it will retain and persist disconnection and connection.

Am I missing something obvious here?

Below is a cut down of the code.

#include <ESP8266WiFi.h>
#include "uMQTTBroker.h"

uMQTTBroker myBroker;

void startWiFiClient(){
  // WiFi init stuff
}

void setup(){
  startWiFiClient();

  myBroker.init();
}

int buttonState;

void loop(){
  int read = digitalRead(0);
  if (buttonState != read) {
    myBroker.publish("button/state", read ? "ON" : "OFF" , 2, 1);
    buttonState = read;
  }
}