Getting error "OAUTHBEARER authentication error (invalid_request)", when trying to re-establish a connection

[sandeep-das-31]

The initial connection is working fine with the generated access token which has a TTL of 60 minutes, but when I try to use to same access token with multiple calls to the same API and trying to establish a connection for the same, I am getting this error.

I am able to establish a connection after 9-10 tries, which takes around a time of 3-4 minutes after continuous retries

The code I am using to establish the connection,
func (i *imapUtils) ConnectAndReturnClient(clientAddress string, email string, userAccountsUUID string) (*client.Client, error) {
c, err := client.DialTLS(clientAddress, nil)
if err != nil {
i.log.Error("error in dialing client: ", err)
return nil, err
}
userAccountsCredentials, err := i.userAccountCredentialsRepo.GetByAccountUUID(userAccountsUUID)
if err != nil {
i.log.Error("error in credential details for ConnectAndReturnClient: ", err)
}
saslClient := sasl.NewOAuthBearerClient(&sasl.OAuthBearerOptions{
Username: email,
Token: userAccountsCredentials.AccessToken,
})
// giving a time interval before connecting for other connection
if *countPointer > 0 {
time.Sleep(time.Second * 10)
} else {
*countPointer += 1
}
err = c.Authenticate(saslClient)
if err != nil {
if err.Error() == domain.ErrOauthBeararAccess { // error handloinig for oAuth bearer
usvc := useraccountcredentials.New(i.cfg, i.log)
_, err := usvc.RegenerateAccessToken(userAccountsUUID) //Function to regenerate token
if err != nil {
i.log.Error("unable to regenerate access token ", userAccountsUUID, err)
return nil, err
} // error handling for new token
time.Sleep(time.Second * 10) // sleep time before re-trying
return i.ConnectAndReturnClient(clientAddress, email, userAccountsUUID) // check here
}
return nil, err
}
i.log.Info("Auth done.....")
*countPointer = 0
return c, nil
}