Hello, after reproducing your scenario, we are faced with the same 403
error when triggering the Cloud Function from App Engine Standard.
We tried to create a VPC Access Connector [1] to achieve it but it is not
possible because requests must use the external address of your serverless
service.
This does not seem to be working for connection from Java standard App
Engine to Cloud Function.
I created VPC Access Connector. Enabled it in my Java App Standard Engine
application. Deployed function with vpc access connector.
Java App still gets error 403 when connecting to function.
I know
Thank you. I will have a look.
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To be able to access your internal only function, the requests need to come
from a VPC network in the same project. App Engine Flex and Standard
connect differently to VPC networks:
For App Engine flex you just need to set the network settings in the
app.yaml file.
On the other hand,