Google TTS Authentication: Error 400: redirect_uri_mismatch

[rubens (Daniel Planets)]

Update:

I had assumed this was the solution already, but something was still missing. The authorization was valid only for a while and broke with the first attempt to refresh it.

openHAB 3.3 Release discussion

Not sure of it’s relevant here, but I ran into an issue with reauthorizations after the first auth is a problem because the refresh token is returned only after the first authorization. The net effect is that it works until the access token needs to be refreshed (about an hour), then it breaks. I pushed this change for the nest binding, but may be relevant for Google TTS, too. Note the addition of &prompt=consent to the URL. https://github.com/openhab/openhab-addons/pull/12711/files#diff-58be…

In order to get a token which can be refreshed later the request uri needs an additional parameter &prompt=consent

So it looks like this:

https://accounts.google.com/o/oauth2/v2/auth?scope=https://www.googleapis.com/auth/cloud-platform&access_type=offline&include_granted_scopes=true&response_type=code&redirect_uri=https://www.google.com&prompt=consent&client_id= yourId