Envoyer un message à l'aide du SDK Admin Firebase

Si vous n'avez pas encore configuré Firebase Admin SDK, suivez le guide pour le faire sur votre serveur.Firebase Admin SDK

Activer l'API FCM HTTP v1

1. Dans la consoleFirebase, accédez à Paramètres > Général. Cliquez ensuite sur l'onglet Cloud Messaging.

2. Activez l'API Cloud Messaging.

Autoriser un compte de service d'un autre projet

Vous pouvez envoyer des messages pour un projet (le "projet cible") tout en utilisant un compte de service dans un autre projet (le "projet émetteur"). Cela vous permet de centraliser la gestion des comptes de service dans un seul projet tout en envoyant des messages au nom d'autres utilisateurs. Pour ce faire, procédez comme suit :

1. Dans le projet de l'expéditeur, assurez-vous que l'API Firebase Cloud Messaging est activée. Pour vérifier qu'il est activé dans la console Firebase, accédez à Paramètres > Général. Cliquez ensuite sur l'onglet Cloud Messaging.

2. Dans le projet de l'expéditeur, créez un compte de service.

3. Dans le projet cible, attribuez le rôle d'administrateur de l'API Firebase Cloud Messaging à l'adresse e-mail du compte de service. Pour ce faire, accédez à la page IAM et administration > IAM de la console Google Cloud. Ce rôle permet au compte de service du projet expéditeur d'envoyer des messages au projet cible.

4. Initialisez votre SDK avec le fichier de clé de compte de service du projet expéditeur et l'ID du projet cible.

   Node.js

   import { initializeApp, applicationDefault } from 'firebase-admin/app';
   
   initializeApp({
     // The credential is configured to be the sender project's service
     // account key via the environment variable GOOGLE_APPLICATION_CREDENTIALS
     credential: applicationDefault(),
     projectId: '<TARGET_PROJECT_ID>',
   });
   

   Java

   FirebaseOptions options = FirebaseOptions.builder()
       // The credential is configured to be the sender project's service
       // account key via the environment variable GOOGLE_APPLICATION_CREDENTIALS
       .setCredentials(GoogleCredentials.getApplicationDefault())
       .setProjectId("<TARGET_PROJECT_ID>")
       .build();
   
   FirebaseApp.initializeApp(options);
   

   Python

   import firebase_admin
   
   app_options = {'projectId': '<TARGET_PROJECT_ID>'}
   # Initialize with the default credential, i.e. the sender project's service
   # account key, stored in GOOGLE_APPLICATION_CREDENTIALS
   default_app = firebase_admin.initialize_app(options=app_options)
   

   Go

   config := &firebase.Config{ProjectID: "<TARGET_PROJECT_ID>"}
   // Initialize with the default credential, i.e. the sender project's service
   // account key, stored in GOOGLE_APPLICATION_CREDENTIALS
   app, err := firebase.NewApp(context.Background(), config)
   if err != nil {
           log.Fatalf("error initializing app: %v\n", err)
   }
   

   C#

   FirebaseApp.Create(new AppOptions()
   {
       // The credential is configured to be the sender project's service
       // account key via the environment variable GOOGLE_APPLICATION_CREDENTIALS
       Credential = GoogleCredential.GetApplicationDefault(),
       ProjectId = "<TARGET_PROJECT_ID>",
   });
   

Envoyer des messages à des appareils spécifiques

Pour envoyer une notification à un seul appareil spécifique, vous pouvez cibler son ID d'installation Firebase ou son jeton d'enregistrement.

Remarque : Pendant la période de migration, le champ token accepte également les FID. Toutefois, étant donné que le champ token est obsolète et sera supprimé, nous vous recommandons d'utiliser le champ fid une fois que vos clients seront enregistrés à l'aide des ID d'installation Firebase.

Node.js

Utiliser le FID (recommandé) :

// This installation ID comes from the client FCM SDKs.
const fid = 'YOUR_REGISTERED_FID';

const message = {
  data: {
    score: '850',
    time: '2:45'
  },
  fid: fid
};

// Send a message to the device corresponding to the provided FID.
getMessaging().send(message)
  .then((response) => {
    // Response is a message ID string.
    console.log('Successfully sent message:', response);
  })
  .catch((error) => {
    console.log('Error sending message:', error);
  });

Utiliser un jeton d'enregistrement (obsolète) :

// This registration token comes from the client FCM SDKs.
const registrationToken = 'YOUR_REGISTRATION_TOKEN';

const message = {
  data: {
    score: '850',
    time: '2:45'
  },
  token: registrationToken
};

// Send a message to the device corresponding to the provided
// registration token.
getMessaging().send(message)
  .then((response) => {
    // Response is a message ID string.
    console.log('Successfully sent message:', response);
  })
  .catch((error) => {
    console.log('Error sending message:', error);
  });

Java

Utiliser le FID (recommandé) :

// This installation ID comes from the client FCM SDKs.
String fid = "YOUR_REGISTERED_FID";

// See documentation on defining a message payload.
Message message = Message.builder()
    .putData("score", "850")
    .putData("time", "2:45")
    .setFid(fid)
    .build();

// Send a message to the device corresponding to the provided FID.
String response = FirebaseMessaging.getInstance().send(message);
// Response is a message ID string.
System.out.println("Successfully sent message: " + response);

Utiliser un jeton d'enregistrement (obsolète) :

// This registration token comes from the client FCM SDKs.
String registrationToken = "YOUR_REGISTRATION_TOKEN";

// See documentation on defining a message payload.
Message message = Message.builder()
    .putData("score", "850")
    .putData("time", "2:45")
    .setToken(registrationToken)
    .build();

// Send a message to the device corresponding to the provided
// registration token.
String response = FirebaseMessaging.getInstance().send(message);
// Response is a message ID string.
System.out.println("Successfully sent message: " + response);
FirebaseMessagingSnippets.java

Python

Utiliser le FID (recommandé) :

# This installation ID comes from the client FCM SDKs.
fid = 'YOUR_REGISTERED_FID'

# See documentation on defining a message payload.
message = messaging.Message(
    data={
        'score': '850',
        'time': '2:45',
    },
    fid=fid,
)

# Send a message to the device corresponding to the provided FID.
response = messaging.send(message)
# Response is a message ID string.
print('Successfully sent message:', response)

Utiliser un jeton d'enregistrement (obsolète) :

# This registration token comes from the client FCM SDKs.
registration_token = 'YOUR_REGISTRATION_TOKEN'

# See documentation on defining a message payload.
message = messaging.Message(
    data={
        'score': '850',
        'time': '2:45',
    },
    token=registration_token,
)

# Send a message to the device corresponding to the provided
# registration token.
response = messaging.send(message)
# Response is a message ID string.
print('Successfully sent message:', response)
cloud_messaging.py

Accéder

Utiliser le FID (recommandé) :

// Obtain a messaging.Client from the App.
ctx := context.Background()
client, err := app.Messaging(ctx)
if err != nil {
    log.Fatalf("error getting Messaging client: %v\n", err)
}

// This installation ID comes from the client FCM SDKs.
fid := "YOUR_REGISTERED_FID"

// See documentation on defining a message payload.
message := &messaging.Message{
    Data: map[string]string{
        "score": "850",
        "time":  "2:45",
    },
    Fid: fid,
}

// Send a message to the device corresponding to the provided FID.
response, err := client.Send(ctx, message)
if err != nil {
    log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Successfully sent message:", response)

Utiliser un jeton d'enregistrement (obsolète) :

// Obtain a messaging.Client from the App.
ctx := context.Background()
client, err := app.Messaging(ctx)
if err != nil {
	log.Fatalf("error getting Messaging client: %v\n", err)
}

// This registration token comes from the client FCM SDKs.
registrationToken := "YOUR_REGISTRATION_TOKEN"

// See documentation on defining a message payload.
message := &messaging.Message{
	Data: map[string]string{
		"score": "850",
		"time":  "2:45",
	},
	Token: registrationToken,
}

// Send a message to the device corresponding to the provided
// registration token.
response, err := client.Send(ctx, message)
if err != nil {
	log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Successfully sent message:", response)
messaging.go

C#

Utiliser le FID (recommandé) :

// This installation ID comes from the client FCM SDKs.
var fid = "YOUR_REGISTERED_FID";

var message = new Message()
{
    Data = new Dictionary<string, string>()
    {
        { "score", "850" },
        { "time", "2:45" },
    },
    Fid = fid,
};

// Send a message to the device corresponding to the provided FID.
string response = await FirebaseMessaging.DefaultInstance.SendAsync(message);
// Response is a message ID string.
Console.WriteLine("Successfully sent message: " + response);

Utiliser un jeton d'enregistrement (obsolète) :

            // This registration token comes from the client FCM SDKs.
            var registrationToken = "YOUR_REGISTRATION_TOKEN";

            // See documentation on defining a message payload.
            var message = new Message()
            {
                Data = new Dictionary<string, string>()
                {
                    { "score", "850" },
                    { "time", "2:45" },
                },
#pragma warning disable CS0618
                Token = registrationToken,
#pragma warning restore CS0618
            };

            // Send a message to the device corresponding to the provided
            // registration token.
            string response = await FirebaseMessaging.DefaultInstance.SendAsync(message);
            // Response is a message ID string.
            Console.WriteLine("Successfully sent message: " + response);

En cas de réussite, chaque méthode d'envoi renvoie un ID de message. Firebase Admin SDK renvoie la chaîne d'ID au format projects/{project_id}/messages/{message_id}.

Envoyer un message à plusieurs appareils

Les SDK Admin FCM vous permettent de multidiffuser un message à une liste d'ID d'installation Firebase ou de jetons d'enregistrement d'appareils. Vous pouvez utiliser cette fonctionnalité lorsque vous devez envoyer le même message à un grand nombre d'appareils. Vous pouvez spécifier jusqu'à 500 FID et/ou jetons par invocation.

Remarque : Pendant la période de migration, le champ tokens accepte également les FID. Toutefois, étant donné que le champ token est obsolète et sera supprimé, nous vous recommandons d'utiliser le champ fid une fois que vos clients seront enregistrés à l'aide des ID d'installation Firebase.

La valeur renvoyée inclut une liste de réponses qui correspond à l'ordre des cibles d'entrée, des FID et/ou des jetons. Cela est utile lorsque vous souhaitez vérifier quels cibles ont généré des erreurs. Si des jetons et des FID sont fournis, les jetons sont traités en premier, suivis des FID.

Node.js

Utiliser des FID (recommandé) :

// These Firebase Installation IDs (FIDs) come from the client FCM SDKs.
const fids = [
  'YOUR_REGISTERED_FID_1',
  // ...
  'YOUR_REGISTERED_FID_N'
];

const message = {
  data: {score: '850', time: '2:45'},
  fids: fids,
};

getMessaging().sendEachForMulticast(message)
  .then((response) => {
    console.log(response.successCount + ' messages were sent successfully');
    if (response.failureCount > 0) {
      const failedFids = [];
      response.responses.forEach((resp, idx) => {
        if (!resp.success) {
          failedFids.push(fids[idx]);
        }
      });
      console.log('List of FIDs that caused failures: ' + failedFids);
    }
  });

Utiliser des jetons d'enregistrement (obsolète) :

// These registration tokens come from the client FCM SDKs.
const registrationTokens = [
  'YOUR_REGISTRATION_TOKEN_1',
  // …
  'YOUR_REGISTRATION_TOKEN_N',
];

const message = {
  data: {score: '850', time: '2:45'},
  tokens: registrationTokens,
};

getMessaging().sendEachForMulticast(message)
  .then((response) => {
    if (response.failureCount > 0) {
      const failedTokens = [];
      response.responses.forEach((resp, idx) => {
        if (!resp.success) {
          failedTokens.push(registrationTokens[idx]);
        }
      });
      console.log('List of tokens that caused failures: ' + failedTokens);
    }
  });

Java

Utiliser des FID (recommandé) :

// These Firebase Installation IDs (FIDs) come from the client FCM SDKs.
List<String> fids = Arrays.asList(
    "YOUR_REGISTERED_FID_1",
    // ...
    "YOUR_REGISTERED_FID_N"
);

MulticastMessage message = MulticastMessage.builder()
    .putData("score", "850")
    .putData("time", "2:45")
    .addAllFids(fids)
    .build();

BatchResponse response = FirebaseMessaging.getInstance().sendEachForMulticast(message);
if (response.getFailureCount() > 0) {
  List<SendResponse> responses = response.getResponses();
  List<String> failedFids = new ArrayList<>();
  for (int i = 0; i < responses.size(); i++) {
    if (!responses.get(i).isSuccessful()) {
      // The order of responses corresponds to the order of the destination FIDs.
      failedFids.add(fids.get(i));
    }
  }
  System.out.println("List of FIDs that caused failures: " + failedFids);
}

Utiliser des jetons d'enregistrement (obsolète) :

// These registration tokens come from the client FCM SDKs.
List<String> registrationTokens = Arrays.asList(
    "YOUR_REGISTRATION_TOKEN_1",
    // ...
    "YOUR_REGISTRATION_TOKEN_n"
);

MulticastMessage message = MulticastMessage.builder()
    .putData("score", "850")
    .putData("time", "2:45")
    .addAllTokens(registrationTokens)
    .build();
BatchResponse response = FirebaseMessaging.getInstance().sendEachForMulticast(message);
if (response.getFailureCount() > 0) {
  List<SendResponse> responses = response.getResponses();
  List<String> failedTokens = new ArrayList<>();
  for (int i = 0; i < responses.size(); i++) {
    if (!responses.get(i).isSuccessful()) {
      // The order of responses corresponds to the order of the registration tokens.
      failedTokens.add(registrationTokens.get(i));
    }
  }

  System.out.println("List of tokens that caused failures: " + failedTokens);
}
FirebaseMessagingSnippets.java

Python

Utiliser des FID (recommandé) :

# These Firebase Installation IDs (FIDs) come from the client FCM SDKs.
fids = [
    'YOUR_REGISTERED_FID_1',
    # ...
    'YOUR_REGISTERED_FID_N',
]

message = messaging.MulticastMessage(
    data={'score': '850', 'time': '2:45'},
    fids=fids,
)
response = messaging.send_each_for_multicast(message)
if response.failure_count > 0:
    responses = response.responses
    failed_fids = []
    for idx, resp in enumerate(responses):
        if not resp.success:
            # The order of responses corresponds to the order of the destination FIDs.
            failed_fids.append(fids[idx])
    print('List of FIDs that caused failures: {0}'.format(failed_fids))

Utiliser des jetons d'enregistrement (obsolète) :

# These registration tokens come from the client FCM SDKs.
registration_tokens = [
    'YOUR_REGISTRATION_TOKEN_1',
    # ...
    'YOUR_REGISTRATION_TOKEN_N',
]

message = messaging.MulticastMessage(
    data={'score': '850', 'time': '2:45'},
    tokens=registration_tokens,
)
response = messaging.send_each_for_multicast(message)
if response.failure_count > 0:
    responses = response.responses
    failed_tokens = []
    for idx, resp in enumerate(responses):
        if not resp.success:
            # The order of responses corresponds to the order of the registration tokens.
            failed_tokens.append(registration_tokens[idx])
    print(f'List of tokens that caused failures: {failed_tokens}')
cloud_messaging.py

Accéder

Utiliser des FID (recommandé) :

// Create a list containing up to 500 Firebase Installation IDs (FIDs).
// These Firebase Installation IDs (FIDs) come from the client FCM SDKs.
fids := []string{
    "YOUR_REGISTERED_FID_1",
    // ...
    "YOUR_REGISTERED_FID_N",
}

message := &messaging.MulticastMessage{
    Data: map[string]string{
        "score": "850",
        "time":  "2:45",
    },
    Fids: fids,
}

br, err := client.SendEachForMulticast(ctx, message)
if err != nil {
    log.Fatalln(err)
}

if br.FailureCount > 0 {
    var failedFids []string
    for idx, resp := range br.Responses {
        if !resp.Success {
            // The order of responses corresponds to the order of the destination FIDs.
            failedFids = append(failedFids, fids[idx])
        }
    }
    fmt.Printf("List of FIDs that caused failures: %v\n", failedFids)
}

Utiliser des jetons d'enregistrement (obsolète) :

// Create a list containing up to 500 registration tokens.
// This registration tokens come from the client FCM SDKs.
registrationTokens := []string{
	"YOUR_REGISTRATION_TOKEN_1",
	// ...
	"YOUR_REGISTRATION_TOKEN_n",
}
message := &messaging.MulticastMessage{
	Data: map[string]string{
		"score": "850",
		"time":  "2:45",
	},
	Tokens: registrationTokens,
}

br, err := client.SendEachForMulticast(context.Background(), message)
if err != nil {
	log.Fatalln(err)
}

if br.FailureCount > 0 {
	var failedTokens []string
	for idx, resp := range br.Responses {
		if !resp.Success {
			// The order of responses corresponds to the order of the registration tokens.
			failedTokens = append(failedTokens, registrationTokens[idx])
		}
	}

	fmt.Printf("List of tokens that caused failures: %v\n", failedTokens)
}
messaging.go

C#

Utiliser des FID (recommandé) :

// These Firebase Installation IDs (FIDs) come from the client FCM SDKs.
var fids = new List<string>()
{
    "YOUR_REGISTERED_FID_1",
    // ...
    "YOUR_REGISTERED_FID_N",
};

var message = new MulticastMessage()
{
    Data = new Dictionary<string, string>()
    {
        { "score", "850" },
        { "time", "2:45" },
    },
    Fids = fids,
};

var response = await FirebaseMessaging.DefaultInstance.SendEachForMulticastAsync(message);

if (response.FailureCount > 0)
{
    var failedFids = new List<string>();
    for (var i = 0; i < response.Responses.Count; i++)
    {
        if (!response.Responses[i].IsSuccess)
        {
            // The order of responses corresponds to the order of the destination FIDs.
            failedFids.add(fids[i]);
        }
    }
    Console.WriteLine($"List of FIDs that caused failures: {string.Join(", ", failedFids)}");
}

Utiliser des jetons d'enregistrement (obsolète) :

            // These registration tokens come from the client FCM SDKs.
            var registrationTokens = new List<string>()
            {
                "YOUR_REGISTRATION_TOKEN_1",
                // ...
                "YOUR_REGISTRATION_TOKEN_n",
            };
            var message = new MulticastMessage()
            {
#pragma warning disable CS0618
                Tokens = registrationTokens,
#pragma warning restore CS0618
                Data = new Dictionary<string, string>()
                {
                    { "score", "850" },
                    { "time", "2:45" },
                },
            };

            var response = await FirebaseMessaging.DefaultInstance.SendEachForMulticastAsync(message);
            if (response.FailureCount > 0)
            {
                var failedTokens = new List<string>();
                for (var i = 0; i < response.Responses.Count; i++)
                {
                    if (!response.Responses[i].IsSuccess)
                    {
                        // The order of responses corresponds to the order of the registration tokens.
                        failedTokens.Add(registrationTokens[i]);
                    }
                }

                Console.WriteLine($"List of tokens that caused failures: {failedTokens}");
            }
FirebaseMessagingSnippets.cs

Envoyer une liste de messages

Les SDK Admin permettent d'envoyer une liste de 500 messages maximum. Cette fonctionnalité permet de créer un ensemble personnalisé de messages et de les envoyer à différents destinataires, y compris des thèmes, des ID d'installation Firebase (FIDs) ou des jetons d'enregistrement d'appareils. Par exemple, vous pouvez utiliser cette fonctionnalité lorsque vous devez envoyer des messages différents à différentes audiences.

Remarque : Pendant la période de migration, le champ token accepte également les FID. Toutefois, étant donné que le champ token est obsolète et sera supprimé, nous vous recommandons d'utiliser le champ fid une fois que vos clients seront enregistrés à l'aide des ID d'installation Firebase.

Node.js

Utiliser des cibles mixtes (recommandé) :

// Create a list containing up to 500 messages.
const messages = [
  {
    notification: { title: 'Price drop', body: '5% off all electronics' },
    fid: 'YOUR_REGISTERED_FID', // Using FID (Recommended)
  },
  {
    notification: { title: 'Price drop', body: '2% off all books' },
    token: 'YOUR_REGISTRATION_TOKEN', // Using token (Deprecated)
  },
  {
    notification: { title: 'Price drop', body: '10% off all shoes' },
    topic: 'readers-club',
  }
];

getMessaging().sendEach(messages)
  .then((response) => {
    console.log(response.successCount + ' messages were sent successfully');
  });

Utiliser des jetons d'enregistrement (obsolète) :

// Create a list containing up to 500 messages.
const messages = [];
messages.push({
  notification: { title: 'Price drop', body: '5% off all electronics' },
  token: registrationToken,
});
messages.push({
  notification: { title: 'Price drop', body: '2% off all books' },
  topic: 'readers-club',
});

getMessaging().sendEach(messages)
  .then((response) => {
    console.log(response.successCount + ' messages were sent successfully');
  });

Java

Utiliser des cibles mixtes (recommandé) :

// Create a list containing up to 500 messages.
List<Message> messages = new ArrayList<>();
messages.add(Message.builder()
    .setNotification(Notification.builder()
        .setTitle("Price drop")
        .setBody("5% off all electronics")
        .build())
    .setFid("YOUR_REGISTERED_FID") // Using FID (Recommended)
    .build());
messages.add(Message.builder()
    .setNotification(Notification.builder()
        .setTitle("Price drop")
        .setBody("2% off all books")
        .build())
    .setToken("YOUR_REGISTRATION_TOKEN") // Using token (Deprecated)
    .build());
messages.add(Message.builder()
    .setNotification(Notification.builder()
        .setTitle("Price drop")
        .setBody("10% off all shoes")
        .build())
    .setTopic("readers-club")
    .build());

BatchResponse response = FirebaseMessaging.getInstance().sendEach(messages);
// See the BatchResponse reference documentation
// for the contents of response.
System.out.println(response.getSuccessCount() + " messages were sent successfully");

Utiliser des jetons d'enregistrement (obsolète) :

// Create a list containing up to 500 messages.
List<Message> messages = Arrays.asList(
    Message.builder()
        .setNotification(Notification.builder()
            .setTitle("Price drop")
            .setBody("5% off all electronics")
            .build())
        .setToken(registrationToken)
        .build(),
    // ...
    Message.builder()
        .setNotification(Notification.builder()
            .setTitle("Price drop")
            .setBody("2% off all books")
            .build())
        .setTopic("readers-club")
        .build()
);

BatchResponse response = FirebaseMessaging.getInstance().sendEach(messages);
// See the BatchResponse reference documentation
// for the contents of response.
System.out.println(response.getSuccessCount() + " messages were sent successfully");
FirebaseMessagingSnippets.java

Python

Utiliser des cibles mixtes (recommandé) :

# Create a list containing up to 500 messages.
messages = [
    messaging.Message(
        notification=messaging.Notification('Price drop', '5% off all electronics'),
        fid='YOUR_REGISTERED_FID', # Using FID (Recommended)
    ),
    messaging.Message(
        notification=messaging.Notification('Price drop', '2% off all books'),
        token='YOUR_REGISTRATION_TOKEN', # Using token (Deprecated)
    ),
    messaging.Message(
        notification=messaging.Notification('Price drop', '10% off all shoes'),
        topic='readers-club',
    ),
]

response = messaging.send_each(messages)
# See the BatchResponse reference documentation
# for the contents of response.
print('{0} messages were sent successfully'.format(response.success_count))

Utiliser des jetons d'enregistrement (obsolète) :

# Create a list containing up to 500 messages.
messages = [
    messaging.Message(
        notification=messaging.Notification('Price drop', '5% off all electronics'),
        token=registration_token,
    ),
    # ...
    messaging.Message(
        notification=messaging.Notification('Price drop', '2% off all books'),
        topic='readers-club',
    ),
]

response = messaging.send_each(messages)
# See the BatchResponse reference documentation
# for the contents of response.
print(f'{response.success_count} messages were sent successfully')
cloud_messaging.py

Accéder

Utiliser des cibles mixtes (recommandé) :

// Create a list containing up to 500 messages.
messages := []*messaging.Message{
    {
        Notification: &messaging.Notification{
            Title: "Price drop",
            Body:  "5% off all electronics",
        },
        Fid: "YOUR_REGISTERED_FID", // Using FID (Recommended)
    },
    {
        Notification: &messaging.Notification{
            Title: "Price drop",
            Body:  "2% off all books",
        },
        Token: "YOUR_REGISTRATION_TOKEN", // Using token (Deprecated)
    },
    {
        Notification: &messaging.Notification{
            Title: "Price drop",
            Body:  "10% off all shoes",
        },
        Topic: "readers-club",
    },
}

br, err := client.SendEach(ctx, messages)
if err != nil {
    log.Fatalln(err)
}
// See the BatchResponse reference documentation
// for the contents of response.
fmt.Printf("%d messages were sent successfully\n", br.SuccessCount)

Utiliser des jetons d'enregistrement (obsolète) :

// Create a list containing up to 500 messages.
messages := []*messaging.Message{
	{
		Notification: &messaging.Notification{
			Title: "Price drop",
			Body:  "5% off all electronics",
		},
		Token: registrationToken,
	},
	{
		Notification: &messaging.Notification{
			Title: "Price drop",
			Body:  "2% off all books",
		},
		Topic: "readers-club",
	},
}

br, err := client.SendEach(context.Background(), messages)
if err != nil {
	log.Fatalln(err)
}

// See the BatchResponse reference documentation
// for the contents of response.
fmt.Printf("%d messages were sent successfully\n", br.SuccessCount)
messaging.go

C#

Utiliser des cibles mixtes (recommandé) :

// Create a list containing up to 500 messages.
var messages = new List<Message>()
{
    new Message()
    {
        Notification = new Notification()
        {
            Title = "Price drop",
            Body = "5% off all electronics",
        },
        Fid = "YOUR_REGISTERED_FID", // Using FID (Recommended)
    },
    new Message()
    {
        Notification = new Notification()
        {
            Title = "Price drop",
            Body = "2% off all books",
        },
        Token = "YOUR_REGISTRATION_TOKEN", // Using token (Deprecated)
    },
    new Message()
    {
        Notification = new Notification()
        {
            Title = "Price drop",
            Body = "10% off all shoes",
        },
        Topic = "readers-club",
    },
};

var response = await FirebaseMessaging.DefaultInstance.SendEachAsync(messages);
// See the BatchResponse reference documentation
// for the contents of response.
Console.WriteLine($"{response.SuccessCount} messages were sent successfully");

Utiliser des jetons d'enregistrement (obsolète) :

            // Create a list containing up to 500 messages.
            var messages = new List<Message>()
            {
                new Message()
                {
                    Notification = new Notification()
                    {
                        Title = "Price drop",
                        Body = "5% off all electronics",
                    },
#pragma warning disable CS0618
                    Token = registrationToken,
#pragma warning restore CS0618
                },
                new Message()
                {
                    Notification = new Notification()
                    {
                        Title = "Price drop",
                        Body = "2% off all books",
                    },
                    Topic = "readers-club",
                },
            };

            var response = await FirebaseMessaging.DefaultInstance.SendEachAsync(messages);
            // See the BatchResponse reference documentation
            // for the contents of response.
            Console.WriteLine($"{response.SuccessCount} messages were sent successfully");
FirebaseMessagingSnippets.cs