Develop Reference

How to fix AWS 403 error "Check your AWS Secret Access Key and signing method" when calling SES listcontacts

I have been stuck for about the past 6 hours at this point I'm thinking the only reasonable explanations are that this is a AWS SDK bug or the error message is wrong.
I am using SESv2 class from the AWS SDK in a JAVA SpringBoot app and attempting to manage various details of my SES (Simple Email Service) account.
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.sesv2.SesV2Client;
import software.amazon.awssdk.services.sesv2.model.*;
I have created an IAM user, created security credentials, set them up using multiple different methods as described here guid to credentials environment I've given full access to SES to this IAM role user. I then wrote some code and I was able to do all of the following,
Create a contact list
Delete a contact list
Create contact
Create a Topic in a contact list
Send an email
However, for some unknown reason when I go to test a function I wrote to get a list of contacts so I can test sending an email to multiple contacts I get the following 403 error message,
The request signature we calculated does not match the signature you
provided. Check your AWS Secret Access Key and signing method. Consult
the service documentation for details.
I've verified the credentials are correct. I have created a new set of credentials and made the old set inactive. No dice, all the functions listed above still work however the listContacts in the SesV2Client class still fails with the same error. As you can see below I even bypassed the env variables and just hardcoded the key and secret to pull out all the stops, still fails. In the function that fails, I've gone over and over the values im passing in they are valid and exist 100% because as I said I can make the other calls in the list above to verify the topics and contact list exists.
private List<Contact> listContactsForSiteUpdatesMailingList() {
try (SesV2Client client = SesV2Client.builder()
.region(Region.US_EAST_1)
.credentialsProvider(StaticCredentialsProvider.create(awsCreds))
.build()){
TopicFilter topicFilter = TopicFilter.builder().topicName(TOPIC_SITE_UPDATES).useDefaultIfPreferenceUnavailable(true).build();
ListContactsFilter listContactsFilter = ListContactsFilter.builder().topicFilter(topicFilter).filteredStatus(SubscriptionStatus.OPT_IN).build();
ListContactsRequest listContactsRequest = ListContactsRequest.builder()
.contactListName(CONTACT_LIST).filter(listContactsFilter).build();
ListContactsResponse listContactsResponse = client.listContacts(listContactsRequest);
return listContactsResponse.contacts();
} catch (Exception ex) {
System.out.println("The email was not sent. Error message: "
+ ex.getMessage());
return null;
}
}
Whats going on here and how can I get to the bottom of this error?
EDIT:
Looking at AWS Console Users>Access Management and then looking at the user a created I can even verify that there was "programmatic access"
An example of accessing a ContactList with no issues
EDIT 2: My SES account is currently sandboxed. I just wanted to mention the question is this possibly happening because of that? Grasping at straws here.

I was able to reproduce your issue. I created a list and added a contact. Both worked. However, when i executed listContacts, I got this error:
This looks like a bug. To address this, open a Github issue on the SDK Java Github here:
https://github.com/aws/aws-sdk-java

This is confirmed as a bug in the AWS SDK. To get around this you can use the async client like so
SesV2AsyncClient client = SesV2AsyncClient.builder()
.region(Region.US_EAST_1)
.build())
TopicFilter topicFilter = TopicFilter.builder().topicName(TOPIC_SITE_UPDATES).useDefaultIfPreferenceUnavailable(true).build();
ListContactsFilter listContactsFilter = ListContactsFilter.builder().topicFilter(topicFilter).filteredStatus(SubscriptionStatus.OPT_IN).build();
ListContactsRequest listContactsRequest = ListContactsRequest.builder()
.contactListName(CONTACT_LIST).filter(listContactsFilter).build();
CompletableFuture<ListContactsResponse> listContactsResponseCompletableFuture = client.listContacts(listContactsRequest);
ListContactsResponse listContactsResponse = listContactsResponseCompletableFuture.get();

Android Billing how to use setAccountId or assign payment to custom identifier

I would like to **allow my users using my app across multiple devices **. Users have to log into my app through firebase auth.
Problem is that payments are assigned to account that is signed on the device (google play), not with account signed into the app.** From firebase auth I can get an email address of the user of my app - this could be used as some unique identifier.
Problem visualized:
I noticed that in Billing flow there is .setAccountId("some id") I think I could use this to fill in a unique identifier of a user. But how can use it querying purchases?
BillingFlowParams.Builder builder = new BillingFlowParams.Builder()
.setAccountId("some id")
.setSku(PREMIUM_YEAR_SUBS).setType(BillingClient.SkuType.SUBS);
TLDR: All I want to do is to retrieve purchases that are connected to my APP user account, not device account (google play currently logged in user).

To implement billing using accountId, try using the getBuyIntentExtraParams() method which provides additional functionality as compared with getBuyIntent() method.
With this method, you may use accountId with the following description:
Optional obfuscated string that is uniquely associated with the user's account in your app. If you pass this value, Google Play can use it to detect irregular activity, such as many devices making purchases on the same account in a short period of time.
Additionally, you may want to also check the typical purchase flow with the In-app Billing API discussed here.

It seems that we can't get the accountId, the accountId just used by google play.
I guess that you use the accountId to instead of the payload, but after my try, I think that it is not successful.
In the Google Billing Library, the develop payload is removed for the same experience between the in-app-purchase and the out-app-purchase. Though we can add payload in the period of consume or acknowledge, but it useless. And the payload should be set on the period of purchase, but google delete it, and will not be add back. The payload issues.

You can check the AccountId attached to each Purchase using
Purchase.getAccountIdentifiers
It'll return AccountIdentifiers object that has
AccountId & ProfileId that were set previously in BillingFlowParams when you launched billing flow
After that you can compare the current user account id with the account id attached to each purchase
to detect the purchases that are connected to the current user account

Sending notifications One to One (Firebase) [duplicate]

I am thinking about keeping all registration ids(push token) in DB and sending notifications to user from iPhone. I tried something like this but did not get any notification.
func sendPNMessage() {
FIRMessaging.messaging().sendMessage(
["body": "hey"],
to: TOKEN_ID,
withMessageID: "1",
timeToLive: 108)
}
What I am doing wrong or maybe it is impossible at all?

Currently it's not possible to send messages from the application itself.
You can send messages from the Firebase Web Console, or from a custom server using the server-side APIs.
What you might want to do is to contact a server (like via http call) and that server will send the message to the user.
This way ensure that the API-KEY of the server is protected.
PS: the sendMessage(..) api is called upstream feature, and can be used to send messages from your app to your server, if you server has an XMPP connection with the FCM server.

Yes you can send push notification through Firebase.Please make sure do NOT include the server-key into your client. There are ways "for not so great people" to find it and do stuff... The Proper way to achieve that is for your client to instruct your app-server to send the notification.
You have to send a HTTP-Post to the Google-API-Endpoint.
You need the following headers:
Content-Type: application/json
Authorization: key={your_server_key}
You can obtain your server key within in the Firebase-Project.
HTTP-Post-Content: Sample
{
"notification": {
"title": "Notification Title",
"text": "The Text of the notification."
},
"project_id": "<your firebase-project-id",
"to":"the specific client-device-id"
}

Google Cloud Functions make it now possible send push notifications from device-to-device without an app server.
From the Google Cloud Functions documentation:
Developers can use Cloud Functions to keep users engaged and up to
date with relevant information about an app. Consider, for example, an
app that allows users to follow one another's activities in the app.
In such an app, a function triggered by Realtime Database writes to
store new followers could create Firebase Cloud Messaging (FCM)
notifications to let the appropriate users know that they have gained
new followers.
Example:
The function triggers on writes to the Realtime Database path where followers are stored.
The function composes a message to send via FCM.
FCM sends the notification message to the user's device.
Here is a demo project for sending device-to-device push notifications with Firebase and Google Cloud Functions.

Diego's answer is very accurate but there's also cloud functions from firebase it's very convenient to send notifications in every change in the db. For example let's say you're building chat application and sending notification in every new follower change.
This function sample is very good example.
For more information about cloud functions you can check official docs.

I have an app that has a "send feedback to developer" section. I also have a User collection in my firestore database. When a user logs into the app, I have that Users data update their FCM token with the following code in my SceneDelegate.swift:
import Firebase
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
authListener = Auth.auth().addStateDidChangeListener({ (auth, user) in
Auth.auth().removeStateDidChangeListener(self.authListener!)
if user != nil {
DispatchQueue.main.async {
let docRef = Firestore.firestore().collection("User").document((user?.email)!)
docRef.getDocument { (snapshot, error) in
guard let snapshot = snapshot else {return}
Messaging.messaging().token { token, error in
if let error = error {
print("Error fetching FCM registration token: \(error)")
} else if let token = token {
docRef.updateData(["FCMtoken":token])
print("FCM registration token: \(token)")
}
}
}
}
}
})
guard let _ = (scene as? UIWindowScene) else { return }
}
then in my feedback view controller i have this code to send my specific device (but you can look up/fetch which specific device you want in your database where the FCMtoken is stored where i have INSERT-DEVICE-TOKEN-HERE). The url to send to is "https://fcm.googleapis.com/fcm/send" and you can find YOUR-APP-FCM-KEY by going to your project settings in firebase, going to cloud messaging tab and its the server key.
func sendMePushNotification() {
let token = "INSERT-DEVICE-TOKEN-HERE"
if let url = URL(string: "https://fcm.googleapis.com/fcm/send") {
var request = URLRequest(url: url)
request.allHTTPHeaderFields = ["Content-Type":"application/json", "Authorization":"key=YOUR-APP-FCM-KEY"]
request.httpMethod = "POST"
request.httpBody = "{\"to\":\"\(token)\",\"notification\":{\"title\":\"Feedback Sent!\",\"body\":\"\(self.feedbackBox.text!)\",\"sound\":\"default\",\"badge\":\"1\"},\"data\": {\"customDataKey\": \"customDataValue\"}}".data(using: .utf8)
URLSession.shared.dataTask(with: request) { (data, urlresponse, error) in
if error != nil {
print("error")
} else {
print("Successfully sent!.....")
}
}.resume()
}
}

Use onesignal,you can send device to notifications or device to segments ,it can work with firebase in this way
Use onesignal functions to create a specific id,save it in a firebase database ,then when the id can be put in another function that is used to send a notification
Notes: 1-i am using it in my apps with firebase works perfectly
2-i can submit that code,just someone comments so i can find this answer

Detect user login/logout xmpp google app engine

I am using Google App Engine in Java to send XMPP messages.
I would like to know if there is a way to check if a user is logged in to the system or logged out. So, when the user signs in, I would like to send him a welcome chat message and when he signs out I would like to notify my server code of the same.
I have tried the presence API but no luck so far.

Assuming you're referring to querying a user's presence via XMPP, keep in mind that this will only work if your App Engine account is authorized by that user. If you have already got that far, querying for presence (user logged in/logged out) is quite simple (source).
If a Google talk user has subscribed to an app (has accepted an invitation or has invited the app to chat), the app can discover the user's availability by looking for a POST to /_ah/xmpp/presence/available. If the user is subscribed and available, you can send them your application's presence and status:
// In the handler for _ah/xmpp/presence/available
XMPPService xmppService = XMPPServiceFactory.getXMPPService();
Presence presence = xmppService.parsePresence(req);
// Split the XMPP address (e.g., user#gmail.com)
// from the resource (e.g., gmail.CD6EBC4A)
String from = presence.getFromJid().getId().split("/")[0];
// Mirror the contact's presence back to them
xmppService.sendPresence(from, PresenceType.AVAILABLE, presence.getPresenceShow(), presence.getStatus());
To further clarify, your app receives automatic presence notifications via the following POST URL paths:
POSTs to /_ah/xmpp/presence/available/ signal that the user is available and provide the user's chat status.
POSTs to /_ah/xmpp/presence/unavailable/ signal that the user is unavailable.
POSTs to /_ah/xmpp/presence/probe/ request a user's current presence.
As an example, when user sally logs in, you'll get a POST request to /_ah/xmpp/presence/available/ which your server will then have to process. Then when sally logs out, you'll get a separate POST request to /_ah/xmpp/presence/unavailable/.

grails app, using java-apns

I have a grails app, and I am using the java-apns 0.1.5 jar! I have a device key, which already uninstall my app from it, so my question is, should I receive same feedback from the API saying that device is not enable anymore?
My code is the following:
apnsService = APNS.newService()
.withCert(pathToCertificate, password)
.withFeedbackDestination("feedback.sandbox.push.apple.com",2196)
.withSandboxDestination()
.build();
apnsService.start();
Map<String, Date> inactiveDevices = apnsService.getInactiveDevices();
log.debug inactiveDevices
.....
the think is that, the variable inactiveDevices is always empty! why? if I uninstall the app from the device?! am I missing some think in the client(device) side?

If you are using the Sandbox destination, the feedback service may not
report info correctly. This is a known bug with a known workaround,
check the mailing list thread
The problem comes from the "Sandbox" APNs Feedback server, probably a
bug. Here is the solution if anyone has the same problem:
Create a dummy app id in the program portal, enable development push
notifications on it Create and download the associated provisioning
profile Create a new xcode project, and invoke the
registerForRemoteNotificationTypes method on start. Install the dummy
app on your device. At this point, you should have two DEVELOPMENT
apps running on your device: the original app and the dummy app. Both
should be registered to receive push notifications. Uninstall the
original app, and try to send a push notification to that app. Invoke
the feedback service, and you should receive data back.
To resume, the Sandbox Feedbacks server needs TWO DEVELOPMENT Apps
registered on the SAME iPhone to work. This manipulation is not
necessary for the production phase as the "Production" APNs Feedback
server works fine.
I would recommend just switching to test feedback with the production servers.
Please either test with the production servers or use the workaround.

Hello Guys i have done push using grails APNS also with simple java lib.
1. With Grails : here is code snippet for APNS using grails
Hello Guys i have done push using grails APNS.
there are one Important point to remember
1. Proper apple certificate, Apple approved.: Apple approve certificate after 24 hours.
here is my code
1. in config.groovy
environments {
development {
apns {
pathToCertificate = "/Users/sarbogast/Desktop/APNs_development_certificates.p12"
password = "password"
environment = "sandbox"
}
} test {
apns {
pathToCertificate = "/usr/local/myapp/APNs_development_certificates.p12"
password = "password"
environment = "sandbox"
}
} production {
apns {
pathToCertificate = "/usr/local/myapp/APNs_production_certificates.p12"
password = "password"
environment = "production"
}
}
}2. i create a service and here is my service class code def sendMessageToDevices() { List<string> aa = new ArrayList<string>() aa.add("Testing") def payload = APNS.newPayload() .badge(1) .localizedKey("key") .localizedArguments(aa) .sound("default") log.error(payload.length()) if (payload.isTooLong()){ log.info("Message is too long: " + payload.length()) } try { apnsService.testConnection() apnsService.push("Device token here", payload.build() ) } catch (Exception e) { log.error("Could not connect to APNs to send the notification"+e.getMessage()) } }
here "key" is any message which will popup on device push
3. i called this method by controller method..