"Established channel does not have a sufficient security level to transfer call credential."

[atrauzzi]

When following the PHP example, I end up getting the following message:

{ "message": "Established channel does not have a sufficient security level to transfer call credential.", "code": 16, "status": "UNAUTHENTICATED", "details": [] }

Is there something more that needs to be done when configuring the connection?

[atrauzzi]

I also get Could not construct ApplicationDefaultCredentials

[aertje]

It looks like the client does not respect the overriding configuration when constructed.

I haven't used the PHP client myself, perhaps @mehedimi who added the sample code can help out?

[mehedimi]

In my case, I installed the grpc extension version grpc-1.35.0 by running pecl install grpc-1.35.0 and the issues were fixed.

[aertje]

Did @mehedimi 's suggestion resolve your issue @atrauzzi ?

[atrauzzi]

Apologies, I am no long working on the project where I encountered this issue, so I probably won't be able to recreate or recall the specific criteria.

[bacheson]

I'm having this same issue ... anyone find a solution that doesn't involve using a legacy version of grpc?

[bradjones1]

This is fixed in the base Google Cloud PHP SDK at googleapis/google-cloud-php#5224.

Opened a PR for update to docs.