Build app server send requests

Node.js

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

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

// Send a message to the device corresponding to the provided
// registration token.
admin.messaging().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

// 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

# 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

Go

// 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#

// 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" },
    },
    Token = registrationToken,
};

// 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);

REST

POST https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send HTTP/1.1

Content-Type: application/json
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

{
   "message":{
      "token":"bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
      "notification":{
        "body":"This is an FCM notification message!",
        "title":"FCM Message"
      }
   }
}

cURL command:

curl -X POST -H "Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA" -H "Content-Type: application/json" -d '{
"message":{
   "notification":{
     "title":"FCM Message",
     "body":"This is an FCM Message"
   },
   "token":"bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1..."
}}' https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send

Node.js

// Create a list containing up to 500 registration tokens.
// 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,
}

admin.messaging().sendMulticast(message)
  .then((response) => {
    console.log(response.successCount + ' messages were sent successfully');

Java

// Create a list containing up to 100 registration tokens.
// 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().sendMulticast(message);
// See the BatchResponse reference documentation
// for the contents of response.
System.out.println(response.getSuccessCount() + " messages were sent successfully");
FirebaseMessagingSnippets.java

Go

// Create a list containing up to 100 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.SendMulticast(context.Background(), message)
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#

// Create a list containing up to 100 registration tokens.
// 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()
{
    Tokens = registrationTokens,
    Data = new Dictionary<string, string>()
    {
        { "score", "850" },
        { "time", "2:45" },
    },
};

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

REST

Construct an HTTP batch request:

--subrequest_boundary
Content-Type: application/http
Content-Transfer-Encoding: binary
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

POST /v1/projects/myproject-b5ae1/messages:send
Content-Type: application/json
accept: application/json

{
  "message":{
     "token":"bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
     "notification":{
       "title":"FCM Message",
       "body":"This is an FCM notification message!"
     }
  }
}

...

--subrequest_boundary
Content-Type: application/http
Content-Transfer-Encoding: binary
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

POST /v1/projects/myproject-b5ae1/messages:send
Content-Type: application/json
accept: application/json

{
  "message":{
     "token":"cR1rjyj4_Kc:APA91bGusqbypSuMdsh7jSNrW4nzsM...",
     "notification":{
       "title":"FCM Message",
       "body":"This is an FCM notification message!"
     }
  }
}
--subrequest_boundary--

Save the request into a file (in this example batch_request.txt). Then use the cURL command:

curl --data-binary @batch_request.txt -H 'Content-Type: multipart/mixed; boundary="subrequest_boundary"' https://fcm.googleapis.com/batch

Node.js

// 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,
}

admin.messaging().sendMulticast(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

// 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().sendMulticast(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

Go

// Create a list containing up to 100 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.SendMulticast(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#

// 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()
{
    Tokens = registrationTokens,
    Data = new Dictionary<string, string>()
    {
        { "score", "850" },
        { "time", "2:45" },
    },
};

var response = await FirebaseMessaging.DefaultInstance.SendMulticastAsync(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

REST

Each send sub-send returns a response. Responses are separated by a response boundary string starting with --batch_.

--batch_nDhMX4IzFTDLsCJ3kHH7v_44ua-aJT6q
Content-Type: application/http
Content-ID: response-

HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8
Vary: Origin
Vary: X-Origin
Vary: Referer

{
  "name": "projects/35006771263/messages/0:1570471792141125%43c11b7043c11b70"
}

...

--batch_nDhMX4IzFTDLsCJ3kHH7v_44ua-aJT6q
Content-Type: application/http
Content-ID: response-

HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8
Vary: Origin
Vary: X-Origin
Vary: Referer

{
  "name": "projects/35006771263/messages/0:1570471792141696%43c11b7043c11b70"
}

--batch_nDhMX4IzFTDLsCJ3kHH7v_44ua-aJT6q--

Node.js

// The topic name can be optionally prefixed with "/topics/".
var topic = 'highScores';

var message = {
  data: {
    score: '850',
    time: '2:45'
  },
  topic: topic
};

// Send a message to devices subscribed to the provided topic.
admin.messaging().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

// The topic name can be optionally prefixed with "/topics/".
String topic = "highScores";

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

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

Python

# The topic name can be optionally prefixed with "/topics/".
topic = 'highScores'

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

# Send a message to the devices subscribed to the provided topic.
response = messaging.send(message)
# Response is a message ID string.
print('Successfully sent message:', response)
cloud_messaging.py

Go

// The topic name can be optionally prefixed with "/topics/".
topic := "highScores"

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

// Send a message to the devices subscribed to the provided topic.
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#

// The topic name can be optionally prefixed with "/topics/".
var topic = "highScores";

// See documentation on defining a message payload.
var message = new Message()
{
    Data = new Dictionary<string, string>()
    {
        { "score", "850" },
        { "time", "2:45" },
    },
    Topic = topic,
};

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

REST

POST https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send HTTP/1.1

Content-Type: application/json
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA
{
  "message":{
    "topic" : "foo-bar",
    "notification" : {
      "body" : "This is a Firebase Cloud Messaging Topic Message!",
      "title" : "FCM Message"
      }
   }
}

cURL command:

curl -X POST -H "Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA" -H "Content-Type: application/json" -d '{
  "message": {
    "topic" : "foo-bar",
    "notification": {
      "body": "This is a Firebase Cloud Messaging Topic Message!",
      "title": "FCM Message"
    }
  }
}' https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send HTTP/1.1

Node.js

// Define a condition which will send to devices which are subscribed
// to either the Google stock or the tech industry topics.
var condition = "'stock-GOOG' in topics || 'industry-tech' in topics";

// See documentation on defining a message payload.
var message = {
  notification: {
    title: '$GOOG up 1.43% on the day',
    body: '$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.'
  },
  condition: condition
};

// Send a message to devices subscribed to the combination of topics
// specified by the provided condition.
admin.messaging().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

// Define a condition which will send to devices which are subscribed
// to either the Google stock or the tech industry topics.
String condition = "'stock-GOOG' in topics || 'industry-tech' in topics";

// See documentation on defining a message payload.
Message message = Message.builder()
    .setNotification(new Notification(
        "$GOOG up 1.43% on the day",
        "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day."))
    .setCondition(condition)
    .build();

// Send a message to devices subscribed to the combination of topics
// specified by the provided condition.
String response = FirebaseMessaging.getInstance().send(message);
// Response is a message ID string.
System.out.println("Successfully sent message: " + response);
FirebaseMessagingSnippets.java

Python

# Define a condition which will send to devices which are subscribed
# to either the Google stock or the tech industry topics.
condition = "'stock-GOOG' in topics || 'industry-tech' in topics"

# See documentation on defining a message payload.
message = messaging.Message(
    notification=messaging.Notification(
        title='$GOOG up 1.43% on the day',
        body='$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.',
    ),
    condition=condition,
)

# Send a message to devices subscribed to the combination of topics
# specified by the provided condition.
response = messaging.send(message)
# Response is a message ID string.
print('Successfully sent message:', response)
cloud_messaging.py

Go

// Define a condition which will send to devices which are subscribed
// to either the Google stock or the tech industry topics.
condition := "'stock-GOOG' in topics || 'industry-tech' in topics"

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

// Send a message to devices subscribed to the combination of topics
// specified by the provided condition.
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#

// Define a condition which will send to devices which are subscribed
// to either the Google stock or the tech industry topics.
var condition = "'stock-GOOG' in topics || 'industry-tech' in topics";

// See documentation on defining a message payload.
var message = new Message()
{
    Notification = new Notification()
    {
        Title = "$GOOG up 1.43% on the day",
        Body = "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
    },
    Condition = condition,
};

// Send a message to devices subscribed to the combination of topics
// specified by the provided condition.
string response = await FirebaseMessaging.DefaultInstance.SendAsync(message);
// Response is a message ID string.
Console.WriteLine("Successfully sent message: " + response);

REST

POST https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send HTTP/1.1

Content-Type: application/json
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA
{
   "message":{
    "condition": "'dogs' in topics || 'cats' in topics",
    "notification" : {
      "body" : "This is a Firebase Cloud Messaging Topic Message!",
      "title" : "FCM Message",
    }
  }
}

cURL command:

curl -X POST -H "Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA" -H "Content-Type: application/json" -d '{
  "notification": {
    "title": "FCM Message",
    "body": "This is a Firebase Cloud Messaging Topic Message!",
  },
  "condition": "'dogs' in topics || 'cats' in topics"
}' https://fcm.googleapis.com/v1/projects/myproject-b5ae1/messages:send HTTP/1.1

Node.js

// 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',
});

admin.messaging().sendAll(messages)
  .then((response) => {
    console.log(response.successCount + ' messages were sent successfully');
  });

Java

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

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

Go

// Create a list containing up to 100 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.SendAll(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#

// Create a list containing up to 100 messages.
var messages = new List<Message>()
{
    new Message()
    {
        Notification = new Notification()
        {
            Title = "Price drop",
            Body = "5% off all electronics",
        },
        Token = registrationToken,
    },
    new Message()
    {
        Notification = new Notification()
        {
            Title = "Price drop",
            Body = "2% off all books",
        },
        Topic = "readers-club",
    },
};

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

REST

Construct an HTTP batch request by combining a list of sub requests:

--subrequest_boundary
Content-Type: application/http
Content-Transfer-Encoding: binary
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

POST /v1/projects/myproject-b5ae1/messages:send
Content-Type: application/json
accept: application/json

{
  "message":{
     "token":"bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...",
     "notification":{
       "title":"FCM Message",
       "body":"This is an FCM notification message to device 0!"
     }
  }
}

--subrequest_boundary
Content-Type: application/http
Content-Transfer-Encoding: binary
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

POST /v1/projects/myproject-b5ae1/messages:send
Content-Type: application/json
accept: application/json

{
  "message":{
     "topic":"readers-club",
     "notification":{
       "title":"Price drop",
       "body":"2% off all books"
     }
  }
}

...

--subrequest_boundary
Content-Type: application/http
Content-Transfer-Encoding: binary
Authorization: Bearer ya29.ElqKBGN2Ri_Uz...HnS_uNreA

POST /v1/projects/myproject-b5ae1/messages:send
Content-Type: application/json
accept: application/json

{
  "message":{
     "token":"cR1rjyj4_Kc:APA91bGusqbypSuMdsh7jSNrW4nzsM...",
     "notification":{
       "title":"FCM Message",
       "body":"This is an FCM notification message to device N!"
     }
  }
}
--subrequest_boundary--

Node.js

var message = {
  notification: {
    title: '$GOOG up 1.43% on the day',
    body: '$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.',
  },
  android: {
    ttl: 3600 * 1000,
    notification: {
      icon: 'stock_ticker_update',
      color: '#f45342',
    },
  },
  apns: {
    payload: {
      aps: {
        badge: 42,
      },
    },
  },
  topic: 'industry-tech'
};

Java

Message message = Message.builder()
    .setNotification(new Notification(
        "$GOOG up 1.43% on the day",
        "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day."))
    .setAndroidConfig(AndroidConfig.builder()
        .setTtl(3600 * 1000)
        .setNotification(AndroidNotification.builder()
            .setIcon("stock_ticker_update")
            .setColor("#f45342")
            .build())
        .build())
    .setApnsConfig(ApnsConfig.builder()
        .setAps(Aps.builder()
            .setBadge(42)
            .build())
        .build())
    .setTopic("industry-tech")
    .build();
FirebaseMessagingSnippets.java

Python

message = messaging.Message(
    notification=messaging.Notification(
        title='$GOOG up 1.43% on the day',
        body='$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.',
    ),
    android=messaging.AndroidConfig(
        ttl=datetime.timedelta(seconds=3600),
        priority='normal',
        notification=messaging.AndroidNotification(
            icon='stock_ticker_update',
            color='#f45342'
        ),
    ),
    apns=messaging.APNSConfig(
        payload=messaging.APNSPayload(
            aps=messaging.Aps(badge=42),
        ),
    ),
    topic='industry-tech',
)
cloud_messaging.py

Go

oneHour := time.Duration(1) * time.Hour
badge := 42
message := &messaging.Message{
	Notification: &messaging.Notification{
		Title: "$GOOG up 1.43% on the day",
		Body:  "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
	},
	Android: &messaging.AndroidConfig{
		TTL: &oneHour,
		Notification: &messaging.AndroidNotification{
			Icon:  "stock_ticker_update",
			Color: "#f45342",
		},
	},
	APNS: &messaging.APNSConfig{
		Payload: &messaging.APNSPayload{
			Aps: &messaging.Aps{
				Badge: &badge,
			},
		},
	},
	Topic: "industry-tech",
}
messaging.go

C#

var message = new Message
{
    Notification = new Notification()
    {
        Title = "$GOOG up 1.43% on the day",
        Body = "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
    },
    Android = new AndroidConfig()
    {
        TimeToLive = TimeSpan.FromHours(1),
        Notification = new AndroidNotification()
        {
            Icon = "stock_ticker_update",
            Color = "#f45342",
        },
    },
    Apns = new ApnsConfig()
    {
        Aps = new Aps()
        {
            Badge = 42,
        },
    },
    Topic = "industry-tech",
};
FirebaseMessagingSnippets.cs

REST

{
  "message":{
     "topic":"industry-tech",
     "notification":{
       "title":"`$GOOG` up 1.43% on the day",
       "body":"GOOG gained 11.80 points to close at 835.67, up 1.43% on the day."
     },
     "android":{
       "ttl":"3600s",
       "notification":{
         "icon":"stock_ticker_update",
         "color":"#f45342"
       }
     },
     "apns":{
       "payload":{
         "aps":{
           "badge":"42"
         }
       }
     },
     "webpush":{
       "headers":{
         "TTL":"86400"
       }
     }
   }
 }

Node.js

// This registration token comes from the client FCM SDKs.
var registrationToken = 'bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...';

// See the "Defining the message payload" section below for details
// on how to define a message payload.
var payload = {
  data: {
    score: '850',
    time: '2:45'
  }
};

// Send a message to the device corresponding to the provided
// registration token.
admin.messaging().sendToDevice(registrationToken, payload)
  .then(function(response) {
    // See the MessagingDevicesResponse reference documentation for
    // the contents of response.
    console.log('Successfully sent message:', response);
  })
  .catch(function(error) {
    console.log('Error sending message:', error);
  });

Node.js

// These registration tokens come from the client FCM SDKs.
var registrationTokens = [
  'bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...',
  // ...
  'ecupwIfBy1w:APA91bFtuMY7MktgxA3Au_Qx7cKqnf...'
];

// See the "Defining the message payload" section below for details
// on how to define a message payload.
var payload = {
  data: {
    score: '850',
    time: '2:45'
  }
};

// Send a message to the devices corresponding to the provided
// registration tokens.
admin.messaging().sendToDevice(registrationTokens, payload)
  .then(function(response) {
    // See the MessagingDevicesResponse reference documentation for
    // the contents of response.
    console.log('Successfully sent message:', response);
  })
  .catch(function(error) {
    console.log('Error sending message:', error);
  });

Node.js

// See the "Managing device groups" link above on how to generate a
// notification key.
var notificationKey = 'some-notification-key';

// See the "Defining the message payload" section below for details
// on how to define a message payload.
var payload = {
  data: {
    score: '850',
    time: '2:45'
  }
};

// Send a message to the device group corresponding to the provided
// notification key.
admin.messaging().sendToDeviceGroup(notificationKey, payload)
  .then(function(response) {
    // See the MessagingDeviceGroupResponse reference documentation for
    // the contents of response.
    console.log('Successfully sent message:', response);
  })
  .catch(function(error) {
    console.log('Error sending message:', error);
  });

Notification message

var payload = {
  notification: {
    title: '$GOOG up 1.43% on the day',
    body: '$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.'
  }
};

Data message

var payload = {
  data: {
    score: '850',
    time: '2:45'
  }
};

Combined message

var payload = {
  notification: {
    title: '$GOOG up 1.43% on the day',
    body: '$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.'
  },
  data: {
    stock: 'GOOG',
    open: '829.62',
    close: '635.67'
  }
};

Node.js

// This registration token comes from the client FCM SDKs.
var registrationToken = 'bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1...';

// See the "Defining the message payload" section above for details
// on how to define a message payload.
var payload = {
  notification: {
    title: 'Urgent action needed!',
    body: 'Urgent action is needed to prevent your account from being disabled!'
  }
};

// Set the message as high priority and have it expire after 24 hours.
var options = {
  priority: 'high',
  timeToLive: 60 * 60 * 24
};

// Send a message to the device corresponding to the provided
// registration token with the provided options.
admin.messaging().sendToDevice(registrationToken, payload, options)
  .then(function(response) {
    console.log('Successfully sent message:', response);
  })
  .catch(function(error) {
    console.log('Error sending message:', error);
  });