I have successfully implemented subscription validation for Google Play, but I am struggling to understand the validation flow for iOS auto-renewable subscriptions and would like to ask for your he...

This is just a general question about microservice architecture. Why do 2 or more internal services still need token auth like oauth2 to communicate with each other if the outside world doesn't hav...

What i want to do: To call a google function from my server/machine & limit it usage with a (simple) authentication. What i use: Node.js, google-auth-library library for authentication. Wha...

I need to implement server-side logic, to handle changes in apple iOS subscriptions status https://developer.apple.com/documentation/storekit/in-app_purchase/enabling_status_update_notifications My...

I'm trying to call api Purchases.products: get to verify your purchase it yields such a result { "error": { "errors": [ { "domain": "androidpublisher", "reason": "permissionDenied", "message...

I'm trying to setup a server to server link using socket.io over ssl connection. This is my example: /** * Server */ var app = require('express')(); var config = require('./config'); var https ...

Apple published a new method to authenticate against CloudKit, server-to-server. https://developer.apple.com/library/content/documentation/DataManagement/Conceptual/CloudKitWebServicesReference/Set...

When I try to make a call to the Google Directory API using Server to Server authentication, I get the error message "Not Authorized to access this resource/api". What I did: Created an App in t...

I have followed the instructions in https://developers.google.com/bigquery/authorization#service-accounts-appengine to make some queries from app engine to bigquery. In the step 2, I click on Team...