Google Cloud Messaging Group Behaviour - google-cloud-messaging

I have some questions about Google Cloud Messaging related to Groups:
If I remove all devices from a Group, does the Group gets deleted as well?
When I try to add a device to a Group that does not exists, I get a 'HTTP/1.1 400 Bad Request
"notification_key not found". Is there any specific code for this specific error ? ( So I don't have to compare the string in the response body).
When a user deletes the application and reinstall it, his device will be registered twice in the group. In this case, it will receive multiple notifications.
Whats the best way to fix this behaviour?
When a token ( registration_id ) gets expired, does it get removed from the Group?
Is there any endpoint to delete a Group using its notification_key?

Related

soundcloud api how get clientId

On page https://developers.soundcloud.com/
Register a new app (Currently unavailable)
A question for developers. How soon will fix the registration of apps?
Is it possible to register my application in manual mode?
I need my clientId!
Apparently they haven't given out new client IDs for months (another user says so).
To answer your question though, no. As Soundcloud says when you attempt to register an app, "...we will no longer be processing API application requests at this time."
I'm trying to use the API too. It seems like we either need to use client IDs belonging to other people, wait an unspecified period of time, or there may be select uses of their API that don't require a client ID.
It depends on what kind of content you want to access.
If you need only public content than you can obtain the CLIENT ID from your AJAX requests made to soundcloud. Open network debugger in your browser and explore AJAX requests you should see some queries made to api.... and the query string should contain client id:
https://api-v2.soundcloud.com/tracks/687584815/playlists_without_albums?offset=85&limit=5&client_id=xxxxxxxxxxxxxxxxxxxx
Hope that helps.

Identify unique user in Dialogflow V1

So I am testing out Dialogflow and one of the first questions I have is: how does my bot know who it is talking to? I need to identify a user and keep that information for as long as I can. The basic scenario being:
User starts his/her first conversation.
Chatbot send a fulfillment request to the server trying to match a user within its own database.
The user is found, the information (as a JWT or some other token) is sent back to Dialogflow and stored there for further communication. In reality, this part would involve asking for user email, sending a verification code to that email and then verifying the user with the code.
User then starts chatting with a bot and all fulfillment requests get the unique token stored for this very user, so that my REST API knows which user is being served with the response.
Couldn't find anything about it in the docs (maybe I am looking in the wrong places).
There will be several integrations, like Messenger, Viber, Telegram. I dunno, maybe those APIs add some unique information on the user?...
Thanks for the help!
Sorry, I know it's been a while, but maybe this will help someone else.
The right solution here is a user id, not a session id. A user id is provided by the chat platform (Facebook, Slack etc) and is consistent across sessions for the same user.
To get the user id, go to the Fulfillment tab, enable the editor and use a function like so:
let r = request.body.originalDetectIntentRequest
//this makes sure that you're on an integration
if (r["source"]){
return r.payload.data.sender.id;
}
To tie together ids from different platforms, you probably have to have some kind of log-in process every time you encounter a new id on a platform.
Pop,
Sessions are built in already into DialogFlow requests to your fulfilment service, if you check the payload you will find a sessionId, it remains the same for the same client until it expires.
However if you want to identify the user from any of the clients that you can connect to DialogFlow like Messenger then from the same request payload to you you will notice that there is an object named originalRequest that is only available when requests are coming from those clients.
You can personalize those users response eg using their FB firstname in a message to them.

Confusion with Gcm Token using InstanceId

I am fetching Id and token using InstanceId and store somewhere in my app. After reinstalling the app, I got new token and id. When I'm using old token and id for sending message through gcm, it shows success. But if I use only token for sending message, then it shows canonical. Can someone explain this in details?
example -> result :
1) "oldId:oldToken" -> success
2) "oldToken" -> success and canonical with new token
3) "newId:newToken" -> success
4) "newToken" -> success
I have issue in 1st example: Why is that not showing canonical and new token?
Check link: click here
Be noted that Canonical ID is returned in the response when you send a message from your server to google's gcm server. A canonical registration ID is the registration token of the last registration requested by the client app . This is the ID that the server should use when sending messages to the device.
From this thread:
When you receive a canonical registration ID in the response from Google, the message was accepted by the GCM server and the GCM server would attempt to deliver it to the device. Whether it is actually sent to the device depends on whether the device is available (i.e. connected to the internet). So if your server sends a GCM message to both the old ID and the new ID, the device will probably get two messages.
A canonical registration ID is defined to be the ID of the last registration requested by your application. This is the ID that the server should use when sending messages to the device. If later on you try to send a message using a different registration ID, GCM will process the request as usual, but it will include the canonical registration ID in the registration_id field of the response. Make sure to replace the registration ID stored in your server with this canonical ID.
Old registration IDs can remain active for a while. However Google tells you that you need to update your regid for a particular device/app combination by means of the canonical ID in the response to your sent message.
Check this related SO question:
How to get Canonical ID from GCM
Do old GCM tokens live on even after an uninstall?

Two registration IDs active on one device

I have my app running on a Nexus 5 (Marshmallow) which has 2 active registration ids. Just want to know if that is normal by GCM behavior?
Here's how it's causing me trouble:
Android M has come up with Group permissions - which means the user chooses whether or not he wants the app to have access to his device identifiers (Android ID). Let's assume he denies it and I can't identify the device. The way my app functions is that a user can log in from multiple devices, all of which remain in sync. Because a user can be on mulitple devices, I must handle multiple registration IDs to send push messages (and I cant be sure of the number of devices the user is on, as they can deny providing the device identifiers). This means that I cant delete/update any registration ids on the server side, but only send every push message to all recorded IDs against a user, in the hope that all the devices on which that particular user is signed in will receive the messages.
Because I have a device which has two active registration IDs, I am getting 2 notifications for everything.
On the client end, we were noticing frequent changes in the Registration IDs, we have a class that keeps generating registration ids and updating the server.
Having multiple registration Ids can be a bug in the client app (which you have to deal with).
And the only way to ensure that there will only be one notification being sent per device is to implement canonical IDs on the server side. It is included in the webservice response as "canonical_ids".
Canonical IDs
If a bug in the client app triggers multiple registrations for the same device, it can be hard to reconcile state and the client app might end up with duplicate messages.
Implementing canonical IDs can help you more easily recover from these situations. A canonical registration ID is the registration token of the last registration requested by the client app . This is the ID that the server should use when sending messages to the device.
If you try to send a message using an old registration token, GCM will process the request as usual, but it will include the canonical ID in the registration_id field of the response. Make sure to replace the registration token stored in your server with this canonical ID, as eventually the old registration token will stop working.
Here is a related issue
android GCM get original id of canonical id which tackles how canonical ids work in the actual code

Instagram API Error: Client request limit reached

I am getting this error whenever I try to follow someone on Instagram via API no matter how many follows have been done before:
{"meta":{"error_type":"APIError","code":400,"error_message":"Client request limit reached"}}
My app allows authenticated users to follow interesting people. I know that there is a 5000 call/hour limit per authenticated user, but it fails even with new users.
Do my app is reaching some kind of client level limit?
APIs like follow, unfollow, comment are limited to 350 requests per hour. However sending requests from client side will fix this problem to some extent but it allows the users to see your API token.
In this case it looks like it would be beneficial to get some more data from your users. You could use Google analytics to track the "follow" action
https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide
This would give you a timestamp and information about user behavior.
Even with an advertised rate of X requests per hour, one user hammering the service with your API key can cause everyone to get throttled. (Not guaranteed, but pretty common practice for companies to keep their services alive)
It might be a good idea to reset your API, its possible (though unlikely) that someone has acquired your key and is using it.