Why oAuth2Client.on('tokens') function never trigger ?

Hi everyone, I’m facing to this issue. I used these below codes to refresh access_token. But I realize that it never triggers, although the access_token expired already:

oauth2client.on('tokens', (tokens) => {
  // But it never triggers
  // store the refresh_token in my database!
}

Do anyone have a workaround for this ? Additional:

oAuth2Client.refreshAccessToken((error, tokens) => {
  // return (Tokens is undefined) 
})

[bcoe]

@shinichimg an access token is short lived. Once you have a refresh_token, try setting your credentials like this:

https://github.com/googleapis/google-auth-library-nodejs#retrieve-access-token

At which point, the next request to an API will request a new access token.

[rubek-joshi]

@rubek-joshi could I bother you to open a new issue with your specific questions?

I’ve created one here.