unable to use mqtt

[gururaj revankar]

hello, im trying to connect to rabbitmq over mqtt protocol using esp8266 

i followed the following instruction using pubsubclient, https://funprojects.blog/2018/12/07/rabbitmq-for-iot/

i want to know what should be my mqtt server adress as to connect to rabbitmq mqtt ,how to use it to connect to rabbitmq server from esp8266 , i have folowed the same instruction as per the above listed website,  but unable to connect to rabbitmq using esp8266,

im running my rabbitmq server over a virtual machine with  a public ip,  what should  be my mqtt host adress  in esp8266

commands used toi start rabbit mq

apt-get update

 apt-get install rabbitmq-server 

 service rabbitmq-server start

 command for plugin enable

rabbitmq-plugins enable rabbitmq_mqtt 

rabbitmq-plugins enable rabbitmq_management

create new user and set administrator access

rabbitmqctl add_user admin1 admin1 

rabbitmqctl set_permissions -p / admin1 ".*" ".*" ".*" 

rabbitmqctl set_user_tags admin1 management administrator

code for esp8266

/* Basic ESP8266 MQTT publish client example */

#include <ESP8266WiFi.h> 

#include <PubSubClient.h> // Update these with values suitable for your network. 

const char* ssid = "your_ssid"; 

const char* password = "your_password";

const char* mqtt_server = "192.168.0.121";

  const char* mqtt_user = "admin1"; 

const char* mqtt_pass= "admin1"; 

//the MQ2 analog input pin

WiFiClient espClient; 

PubSubClient client(espClient); 

  void setup_wifi() {  /

/ Connecting to a WiFi network 

  WiFi.begin(ssid, password);  

while (WiFi.status() != WL_CONNECTED) {    

delay(500);  

  Serial.print(".");  }  

Serial.println("WiFi connected");  

Serial.println("IP address: "); 

  Serial.println(WiFi.localIP()); } 

  void reconnect() {  

// Loop until we're reconnected 

  Serial.println("In reconnect..."); 

  while (!client.connected()) {    

Serial.print("Attempting MQTT connection..."); 

    // Attempt to connect   

 if (client.connect("Arduino_Gas", mqtt_user, mqtt_pass)) 

{      Serial.println("connected");    } 

else {      Serial.print("failed, rc=");     

 Serial.print(client.state());     

 Serial.println(" try again in 5 seconds");      delay(5000);    }  } } 

  void setup() {  

Serial.begin(9600);

 setup_wifi(); 

  client.setServer(mqtt_server, 1883); }

void loop() { 

  char msg[8];  

if (!client.connected()) {    

reconnect(); 

  }  

sprintf(msg,"hai from esp8266"); 

  client.publish("mq2_mqtt", msg);

 Serial.print("message send::");

 Serial.println(msg);  delay(5000); }

what should be "  const char* mqtt_server = ???   "

[cedric....@railnova.eu]

Hello,

mqtt_server would be the public ip of your vm on which rabbitmq is running.

Best,