We are planning using Amazon SNS to send push notification to our users. I am wondering what happens if I do the following programmatically (not important but with PHP SDK)
Create a topic on the fly
Subscribe 10000000 users
Send a push notification to this topic
Delete the topic immediately after sending the push notification
Will all subscribers receive the push notification?
Don't do this. Nothing in the docs say that SNS snapshots the topic when you publish, so don't rely on that behavior even if it seems to work.
Related
I'm using FCM FirebaseMessaging to send push notifications to user of my app.
Is there a way to get all notifications sent to one single user or I have to store them in Firestore db?
It's not entirely clear to me what you mean by "get all notifications sent to one single user". But if you're trying to get a history of all messages previously sent to a user via the FCM API, that's not possible. FCM doesn't remember anything about messages previously sent. You have to keep that record yourself, if that's what you need.
I've been working in bulk web push notifications, migrating from OneSignal to Firebase. I've created a single FCM topic to which all users are subscribed immediately on startup.
At first messages arrive on the browser and the notification is shown correctly, but randomly after a few hours and in some devices, notifications cease to show. I've been recording every push message received using DevTools, and noticed that the messages are being received but the push event not dispatched in those cases.
In which cases something like this may happen? It's worth noting that the service worker has been healthly with no errors whatsoever.
Thanks
Is it possible to identify whether a particular push notification message was delivered to a particular token via Firebase Cloud Messaging? And, if so, is it possible to do so via an API call or by listening to some callback?
I know that I can look at aggregate statistics in the console and even segment those statistics through analytics tags, but cannot find a way to get more discrete information.
I also know that the API will synchronously respond if a token is invalid but the process by which Apple and Google invalidate tokens is a bit opaque (to me) and doesn't help if someone simply turned off push notifications for my app.
Thanks!
Jason
If someone turned off push notification – you can check it with code
Swift ios check if remote push notifications are enabled in ios9 and ios10
Android app - detect if app push notification is off
But user can be offline, or APNs / Firebase service – can get some problems and your notification will be drop. You can check delivery status with some code in iOS and Android applications.
If you need check, delivery status for some push you can make push notification extension (in iOS). For send status about delivered notification in your API. More info about push notification extension.
https://developer.apple.com/documentation/usernotifications/unnotificationserviceextension
It can be helpful
https://developer.apple.com/documentation/usernotifications
https://developer.apple.com/documentation/usernotifications/modifying_content_in_newly_delivered_notifications
https://firebase.google.com/docs/cloud-messaging/understand-delivery
https://firebase.google.com/docs/cloud-messaging/android/receive#handling_messages About handling messages in Android (you can send status delivered too)
I hope this answer will help with your problem.
UPD:
https://firebase.google.com/docs/cloud-messaging/understand-delivery
Received (available only on Android devices) — The data message or
notification message has been received by the app. This data is
available when the receiving Android device has FCM SDK 18.0.1 or
higher installed.
In Urban Airship, when I am composing a notification, I can target specific users by searching for a Urban Airship channel_id (device ID):
I sent from Urban Airship the push notification that I am showing above, and I received it successfully. Now I want to do the same thing, send a push notification to a specific device, but now using the Firebase console. The problem is that in Firebase, in the step where I need to specify the target, it only allows me to choose User segment or topic. I was expecting to see a third option: Target specific users (for sending notifications to one or many specific GCM/FCM device token IDs. So my alternative is to add a GCM/FCM device token ID to a topic and then send the push notification to that topic, which is something that I have successfully done before. Nonetheless, that would be a workaround and not the way I would prefer to do this. Is it possible to send push notifications to specific users (by defining the target GCM/FCM device token IDs) from the Firebase console? Thank you.
UPDATE 1: See how the Firebase console (https://console.firebase.google.com/) only shows User segment and Topic as the Target:
First Step:
Second Step:
Third Step:
By design, the notification feature in the console is for sending out broadcast-type events. Sending user-specific alerts would be more of a programmatic operation done through the API.
For sending test messages, there is a console tool for this, explained here.
Note that it is possible to send a notification to one device by subscribing a device to any topic and sending the notification to that topic in the console (keep in mind topics are public and you can't prevent users from signing up to them; fine for testing most likely).
Another alternative is to send a message via HTTP or curl. Perhaps the best resource for this is the quickstart/messaging example.
I'm thinking to work on firebase notifications in the last few days but I want to some answers for this few questions:
Does Ionic2 support firebase notifications ?
Will notification show in the top of screen when my application closed or it should be work in the background ?
Is firebase notification sent on time or it may take long time ?
If I assumed Ionic 2 can send private notifications (to my device only), so can I send public notification for all application users ?
If the answer of all questions "yes", wish you give me any useful links that may help me (if you have a time)
In addition to Gabriel's answer:
The default behavior for notifications is for it to show on the top part of the screen. I haven't worked on Ionic before, but AFAIK, the behavior should compared to Android.
With that said, you should refer to the Handling Messages part of the FCM docs.
There are factors to consider that may affect the time it takes for the device to receive a message, but as FCM's behavior, it would try it's best to send the message, as soon as feasible (see my answer here).
Gonna itemize this further:
Specific device only - Yup. When sending the message, just specify the registration token(s) that should recieve that message.
All devices - Yup. You could use the Firebase Notifications Console. But if you intend to send the message by using the REST API, you have to make sure that the devices are subscribed accordingly to your custom global topic.
About the device-to-device Gabriel mentioned, I think it should be worded as server to specific device(s).
Yes it does, and it works fine with FCM (Firebase Cloud Messaging, aka GCM - Google Cloud Messaging). It supports subscribing to topics and device-to-device notification via HTTP client. The topics subscriptions and device-to-device both require FCM plugin.
Yes, they'll appear on top of your device screen as any push notification, you'll just need to code how it'll behave after receiving it, like execute something if the notification is tapped, or do something if it's received and the app is already open (foreground), it's all up to you.
It's sent on time, i've never had delay problems, the longer it took to send the notification and i receive in my device was 10 seconds. But as far as i know it "stores" your notification for 24 hours, so if the servers go down or something happen the notification has a life time of 24 hours to be sent.
You can, as said in first answer, subscribe your users to topics. Let's say you want a topic to sent message so all users can receive, you can have an all topic, or have one only for logged users, one only for users who bought products, you can even get all users tokens and send one by one, but it's much better having them subscribe to topics.
Topics notifications can be sent via the Firebase project console. Device-to-device is sent by your app code.
To send device-to-device you'll need a token, it's provided by the FCM plugin (link above) and you'll need to store this token somewhere, like in your user node on Firebase. I usualy use the user device ID provided by the Device plugin to have his token, since the user can have multiple devices and log in all then, this'll prevent token overriding.
I don't know good tutorials about configuring FCM with Firebase, if i find something i'll edit the question and add it for you, but stick to the ionic native link and the FCM plugin github page.
Hope this helps.