I have a access token which I call it A, and a refresh token. so when I use the refresh token to refresh A, get a new access token which I call it B. I have some questions: 1.older access token (A) is valid ? can I use it to request GOOGLE api? 2.if A is valid, how long will A expired? 3.if A is valid, the refresh token can refresh access token unlimited?
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Welcome to Stack Overflow. Please post a [Minimal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve). Providing source code enables members to offer more specific advice. Thanks! – Elletlar Dec 27 '18 at 02:42
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If you refresh OAuth token A, you cannot refresh it again. You need to use token B for the next refresh. Once you refresh token A to get token B, stop using token A.
John Hanley
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what's the OAuth token?sorry,I don't understangd what you mean.can you say again clear,thanks – Cyan Dec 28 '18 at 03:07
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An OAuth token is what you get when you authenticate with OAuth 2.0 – John Hanley Dec 28 '18 at 03:17