C# Google API Authentication

Question

I am having an issue where I am able to authenticate when running as a Console Application. But when I make it a Windows Service and install it, I am unable to authenticate. I have used log debug statements to isolate the issue.

UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
        new ClientSecrets {
            ClientId = "myClientId",
            ClientSecret = "myClientSecret"
        },
        new[] {
            CalendarService.Scope.Calendar
        },
        "myProjectName",
        CancellationToken.None,
        new FileDataStore("myProjectName")
).Result;

The issue is with the above statement. This is surrounded by a try/catch, but no Exception is thrown. There is a log statement immediately after this, but it is never executed. My best guess is that the issue is with the FileDataStore. By default Google stores this is %AppData% which my program can find when I run it manually, but when it is a web service I am forced to give it an account type like Local System or Local Service I need to set it as User I think. My guess is that this prevents it from finding the file in %AppData%. Does anyone have any suggestions as to how to help the Windows Service find %AppData%? Or is a Windows Service a bad approach in this situation?

Thank you in advance for any help.

jmservera · Accepted Answer · 2015-01-09 21:58:33Z

1

Using this approach is only valid if you have a UI, because it will launch a browser to ask for authentication. For a service you have to ask for another kind of key that implies installing a certificate in the server. It is explained in OAuth2ServiceAccount.

answered Jan 9, 2015 at 21:58

jmservera

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