Requests attempt fails when it is trying to verify a token with TransportError about firebase-admin-python HOT 8 CLOSED

You should also try with the latest release of the SDK (2.10.0), which caches public key certificates thereby avoiding calling the above URL on each invocation of verify_id_token().

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I don't quite understand. Are you implying that you're using a too old version of requests? Admin SDK uses requests>=2.13.0, so it will typically install the latest version of requests along with firebase_admin.

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@hiranya911 you are right. Requests is the latest so I don't know why that is happening. If I understand well there shouldn't be any limitation on the number of requests for the verification of a token

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The above error has nothing to do with exceeding a quota. It's a low-level network error -- possibly a Firewall issue or something of the sorts. Is this something that happens all the time, or only occasionally?

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It doesn’t happen all the time but actually always if a user with a valid token has performed the same request repeatedly and the routine above checks if it is expired. The issue seems to be related with token verification imho.

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Try sending some GET requests to https://www.googleapis.com/robot/v1/metadata/x509/[email protected] from your Python environment (use the requests library), and see how that works out. The verify_id_token() calls the above URL to download public key certificates, which is what's failing in your case.

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That's cool and likely one good reason to upgrade the SDK. Give a try and I'll let you know. Thanks @hiranya911

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Upgrading to latest with cache looks good. Issue disappeared

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