[GH-ISSUE #155] PubSubClient doesn't stay .connected() #121

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opened 2026-02-28 01:23:33 +03:00 by kerem · 2 comments

kerem commented

2026-02-28 01:23:33 +03:00

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Originally created by @Jimbwlah on GitHub (Apr 19, 2016).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/155

Hi,

Thank you for your excellent WifiManager. I am having an issue with the pubsubclient where by it doesnt maintain it's connected state -

I have my code as so

#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <DNSServer.h> 
#include <ESP8266WebServer.h>    
#include <WiFiManager.h>          

WiFiClient wclient;
PubSubClient client(wclient, "my.mqtt.server", 1883);

void callback(const MQTT::Publish& pub) {
  if (!pub.has_stream()) {
    // Do stuff on publish
  }
}

void setupWiFi() {
  WiFiManager wifiManager;
  wifiManager.setTimeout(300);
  wifiManager.autoConnect("AHUB");
  delay(3000);
}

void setup() {
  Serial.begin(9600);
  setupWiFi();
}

void loop() {

  if (WiFi.status() == WL_CONNECTED) {

    if (!client.connected()) {
      Serial.println("not connected to MQTT broker, trying connection"); 
      if (client.connect(MQTT::Connect("myhub")
                         .set_clean_session()
                         .set_will("status", "disconnected")
                         )) {
        Serial.println("hub connected");
        client.set_callback(callback);
        client.subscribe("commands");
      }
    }

    if (client.connected()) {
      Serial.println("connected, looping"); // debug only
      client.loop();
    }
  }
}

... unfotunately, once I have connected to my MQTT server, client.connected() is reset when client.loop() is called and so it keeps reconnected.

Any ideas?

I am using this PubSubClient as the callback methods are more advanced - https://github.com/Imroy/pubsubclient

Thanks

Originally created by @Jimbwlah on GitHub (Apr 19, 2016). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/155 Hi, Thank you for your excellent WifiManager. I am having an issue with the pubsubclient where by it doesnt maintain it's connected state - I have my code as so ``` #include <Arduino.h> #include <ESP8266WiFi.h> #include <PubSubClient.h> #include <DNSServer.h> #include <ESP8266WebServer.h> #include <WiFiManager.h> WiFiClient wclient; PubSubClient client(wclient, "my.mqtt.server", 1883); void callback(const MQTT::Publish& pub) { if (!pub.has_stream()) { // Do stuff on publish } } void setupWiFi() { WiFiManager wifiManager; wifiManager.setTimeout(300); wifiManager.autoConnect("AHUB"); delay(3000); } void setup() { Serial.begin(9600); setupWiFi(); } void loop() { if (WiFi.status() == WL_CONNECTED) { if (!client.connected()) { Serial.println("not connected to MQTT broker, trying connection"); if (client.connect(MQTT::Connect("myhub") .set_clean_session() .set_will("status", "disconnected") )) { Serial.println("hub connected"); client.set_callback(callback); client.subscribe("commands"); } } if (client.connected()) { Serial.println("connected, looping"); // debug only client.loop(); } } } ``` ... unfotunately, once I have connected to my MQTT server, client.connected() is reset when client.loop() is called and so it keeps reconnected. Any ideas? I am using this PubSubClient as the callback methods are more advanced - https://github.com/Imroy/pubsubclient Thanks

kerem closed this issue

2026-02-28 01:23:33 +03:00

kerem commented

2026-02-28 01:23:33 +03:00

Author

Owner

@kentaylor commented on GitHub (Apr 24, 2016):

Your problems are with calls to the PubSubClient object.

They appear to be unrelated to WiFiManager.

@kentaylor commented on GitHub (Apr 24, 2016): Your problems are with calls to the PubSubClient object. They appear to be unrelated to WiFiManager.

kerem commented

2026-02-28 01:23:33 +03:00

Author

Owner

@tzapu commented on GitHub (May 8, 2016):

hi @Jimbwlah , as @kentaylor mentioned (Thank you very much) this is more about the pubsubclient lib.

try to simplify everything like in the basic example they have
https://github.com/knolleary/pubsubclient/blob/master/examples/mqtt_basic/mqtt_basic.ino

maybe it will help

thanks guys

@tzapu commented on GitHub (May 8, 2016): hi @Jimbwlah , as @kentaylor mentioned (Thank you very much) this is more about the pubsubclient lib. try to simplify everything like in the basic example they have https://github.com/knolleary/pubsubclient/blob/master/examples/mqtt_basic/mqtt_basic.ino maybe it will help thanks guys