FirebaseCloudMessaging example

[kiralikbeyin]

CLIENT_REGISTRATION_ID "key_from_client_after_registration"

How to register? I think this example need an update.

[kiralikbeyin]

Working example without <FirebaseCloudMessaging.h>
CLIENT_REG_ID and TOPIC works fine.

How to register? You can only reg with a mobile device like android emulator

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

#include <FirebaseCloudMessaging.h> 
 
#define WIFI_SSID     "WWW"
#define WIFI_PASSWORD "MMM"

//FOR FirebaseCloudMessaging.h which is not working
#define SERVER_KEY "PUT YOUR GCM KEY"
#define CLIENT_REGISTRATION_ID "YOU HAVE TO MAKE A LOT WORK TO FIND YOUR ANDROID REG ID"
//THIS WILL GIVE AN IDEA https://github.com/arnesson/cordova-plugin-firebase
#define TOPIK     "TOPIK"
//FOR FirebaseCloudMessaging.h which is not working

WiFiClient client;
String serve = "PUT YOUR GCM KEY";
String reg = "YOU HAVE TO MAKE A LOT WORK TO FIND YOUR ANDROID REG ID";
//THIS WILL GIVE AN IDEA https://github.com/arnesson/cordova-plugin-firebase
String top = "TOPIK";


void setup() {
  Serial.begin(9600);
  Serial.setDebugOutput(true);
  // connect to wifi.
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("connecting");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("connected: ");
  Serial.println(WiFi.localIP());
 
  //NO NEED
  FirebaseCloudMessaging fcm(SERVER_KEY);
  //NO CHANCE
  FirebaseCloudMessage message =
    FirebaseCloudMessage::SimpleNotification("Hello World!", "What's happening?");
  FirebaseError error = fcm.SendMessageToUser(CLIENT_REGISTRATION_ID, message);
  if (error) {
    Serial.print("Error:");
    Serial.print(error.code());
    Serial.print(" :: ");
    Serial.println(error.message().c_str());
  } else {
    Serial.println("Sent OK!");
  }
  //NO CHANCE
  FirebaseCloudMessage messageTOPIK =
    FirebaseCloudMessage::SimpleNotification("Hello World!TOPIK", "What's happening?TOPIK");
  FirebaseError errorTOPIK = fcm.SendMessageToTopic(TOPIK, message);
  if (errorTOPIK) {
    Serial.print("ErrorError:");
    Serial.print(errorTOPIK.code());
    Serial.print(" :: ");
    Serial.println(errorTOPIK.message().c_str());
  } else {
    Serial.println("Sent OKOK!");
  }
  //NO CHANCE


}


HTTPClient http;
void doit(String paytitle, String pay) {
  //more info @ https://firebase.google.com/docs/cloud-messaging/http-server-ref

  String data = "{";
  data = data + "\"to\": \"" + reg + "\",";
  data = data + "\"notification\": {";
  data = data + "\"body\": \"" + pay + "\",";
  data = data + "\"title\" : \"" + paytitle + "\" ";
  data = data + "} }";

  http.begin("http://fcm.googleapis.com/fcm/send");
  http.addHeader("Authorization", "key=" + serve);
  http.addHeader("Content-Type", "application/json");
  http.addHeader("Host", "fcm.googleapis.com");
  http.addHeader("Content-Length", String(pay.length()));
  http.POST(data);
  http.writeToStream(&Serial);
  http.end();
  Serial.println();

}

HTTPClient httpTOPIK;
void doitTOPIC(String paytitle, String pay, String top) {
  //more info @ https://firebase.google.com/docs/cloud-messaging/http-server-ref


  String data = "{";
  data = data + "\"to\": \"/topics/" + top + "\",";
  data = data + "\"notification\": {";
  data = data + "\"body\": \"" + pay + "\",";
  data = data + "\"title\" : \"" + paytitle + "\" ";
  data = data + "} }";

  httpTOPIK.begin("http://fcm.googleapis.com/fcm/send");
  httpTOPIK.addHeader("Authorization", "key=" + serve);
  httpTOPIK.addHeader("Content-Type", "application/json");
  httpTOPIK.addHeader("Host", "fcm.googleapis.com");
  httpTOPIK.addHeader("Content-Length", String(pay.length()));
  httpTOPIK.POST(data);
  httpTOPIK.writeToStream(&Serial);
  httpTOPIK.end();
  Serial.println();

}

//DIRTY WAY
void sendDataToFirebase() {
  String data = "{";
  data = data + "\"to\": \"" + reg + "\",";
  data = data + "\"notification\": {";
  data = data + "\"body\": \"orAway\",";
  data = data + "\"title\" : \"Non\" ";
  data = data + "} }";
  Serial.println("Send data...");
  if (client.connect("fcm.googleapis.com", 80)) {
    Serial.println("Connected to the server..");
    client.println("POST /fcm/send HTTP/1.1");
    client.println("Authorization: key=" + serve + "");
    client.println("Content-Type: application/json");
    client.println("Host: fcm.googleapis.com");
    client.print("Content-Length: ");
    client.println(data.length());
    client.print("\n");
    client.print(data);
  }
  Serial.println("Data sent...Reading response..");
  while (client.available()) {
    char c = client.read();
    Serial.print(c);
  }
  Serial.println("Finished!");
  client.flush();
  client.stop();
}
void loop() {
  // doit("quick", "silver"); //clear way with reg_id
  doitTOPIC("Mr&Mrs", "Brown", top); //clear way with topic
  // doitTOPIC("title", "body", "yourverycustomtopic");

  delay(13000);

  //sendDataToFirebase(); dirty way

}


//TOPIC HELP YOU CAN MAKE IT WITH POSTMAN  @http://stackoverflow.com/questions/37367292/how-to-create-topic-in-fcm-notifications/37422938#37422938
//You can create a topic with http api:
//
//https://iid.googleapis.com/iid/v1/IID_TOKEN/rel/topics/TOPIC_NAME
//
//1. IID_TOKEN = Device registration token, you can find it with following command on your android device :
//
//String IID_TOKEN = FirebaseInstanceId.getInstance().getToken();
//2.TOPIC_NAME = new a topic name
//
//3.Authorization: key=YOUR_API_KEY. Set this parameter in the header. Look to screenshot: Creating new topic via Advanced rest client
//
//YOUR_API_KEY: console.firebase.google.com
//
//and send request and you will be receive http status "OK".
//
//Then you can get infos about all your topics in your current project with following api :
//
//https://iid.googleapis.com/iid/info/IID_TOKEN?details=true
//here need add Authorization key to header of request and you will be receive your topics list: response info topics
//
//I recommend read this article about Instance ID/Server by Google




////TO DO - SUBSCRIBE TO TOPIC FROM ESP WITH doit() method
//@https://firebase.google.com/docs/cloud-messaging/js/send-multiple
//
//Subscribe the client app to a topic
//
//Given a registration token and a topic name, you can create a mapping using the Google Instance ID server API. Call the Instance ID service at this endpoint, providing the app instance's registration token and the topic name:
//
// https://iid.googleapis.com/iid/v1/REGISTRATION_TOKEN/rel/topics/TOPIC_NAME
//To subscribe an app instance to a topic named "movies," for example, send the following POST request to the endpoint, adding your server API key in the authorizaton header as shown:
//
//https://iid.googleapis.com/iid/v1/nKctODamlM4:CKrh_PC8kIb7O...clJONHoA/rel/topics/movies
//Content-Type:application/json
//Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA
//

//{ "notification": {
//    "title": "Background Message Title",
//    "body": "Background message body",
//    "click_action" : "https://dummypage.com"
//  },
//
//  "to" : "/topics/matchday"
//
//}

//FOR ONLY A DEVICE //  "to" : "CLIENT_REG_ID"

[xxporkoxx]

@kiralikbeyin I think you just saved my life!! Thank you very much! I was stucked with this for a long time (2 months probability).... And also saved my graduation =D =D

Your solution works and its probably better then the example that they made to the library...

[xxporkoxx]

@kiralikbeyin I think you just saved my life!! Thank you very much! I was stucked with this for a long time (2 months probability).... And also saved my graduation =D =D

Your solution works and its probably better then the example that they made to the library...

[kiralikbeyin]

@xxporkoxx well there is always another solution for coding. I am happy if it solved a real world problem like graduation :) You can donate with PayPal kiralikbeyin@gmail.com :)

[brubraz]

@kiralikbeyin Thank you for your contribution, very useful! ;)

[Jozx]

@kiralikbeyin save my final college job; thank so much... 👍

[fcleal]

Thank!

However, does anyone know why FirebaseCloudMessaging is not working on ESP8266?

[Leandro-G-Ribeiro]

sou novo aqui (brazil).
se não estiver executando o som das notificações podem usar este json:
String data = "{";
data = data + ""to": "token_aplication",";
data = data + ""notification": {";
data = data + ""body": "temperatura alta!!!",";
data = data + ""title" : "Alarm" ";
data = data + ""sound": "default","; // executa o som do sistema padrão de notificações..
data = data + ""priority" : "high" ";
data = data + "} }";

Também se tiverem problemas com Exception (29) podem executar o código da seguinte forma:
a parte de envio do do request http fica dentro de uma função:

void send_dados() {
WiFiClientSecure client;
String data = "{";
data = data + ""to": "token_aplication",";
data = data + ""notification": {";
data = data + ""body": "temperatura alta!!!",";
data = data + ""title" : "Alarm" ";
data = data + ""sound": "default",";
data = data + ""priority" : "high" ";
data = data + "} }";

Serial.println("Send data...");

if (client.connect(fcmServer, 443)) {
Serial.println("Connected to the server..");
client.println("POST /fcm/send HTTP/1.1");
client.println("Host: fcm.googleapis.com");
client.println("Authorization: key=");
client.println("Content-Type: application/json");
client.print("Content-Length: ");
client.println(data.length());
client.println();
client.println(data);
}

Serial.println("Data sent...Reading response..");
while (client.available()) {
char c = client.read();
Serial.print(c);
}
Serial.println("Finished!");
client.flush();
client.stop();
}

Colocar este código dentro de uma função que instância WiFiClientSecure client e depois detroir esta instância, possibilitou exito no meu projeto. pois o código original do post causava Exception (29) depois de uma requisição de envio de mensagem, ou seja, a primeira mensagem era enviada mas da segunda em diante não.

[jameschen00]

Why the module FirebaseCloudMessaging of ESP8266 failed?
Reason: the internal Fingerprint of Firebase is out-of-date!
Action: forget the fingerprint!
==> Open the file FirebaseHttpClient_ESP8266.cpp, then modify Line 47 to be "http_.begin(url.c_str());"
Of course, there is more than one line should be modified for the same reason.

Enjoy.

James

[proppy]

Sorry for the late reply filed #347 to track we need to update the fingerprint.

[riskiadi]

2020, you cant use http to firebase cloud messaging, you must use https.

Forbidden
Error 403

[ngchautg]

thanks