Exception if grpc::GoogleDefaultCredentials fails and error handling

[Eugene Abramov]

Hello, 

If the file application_default_credentials.json is missing the function grpc::GoogleDefaultCredentials fails with a critical error. How to fix it?

How to check for errors?

auto Credentials = grpc::GoogleDefaultCredentials ();      <- Exception here before return from this function

                     

if (Credentials) {    // It`s correct?

    
} else {  }  // If Error

And how to check for connect errors?

auto Channel = grpc::CreateChannel ("speech.googleapis.com", Credentials);

auto stub = GoogleSpeechAPI::Speech::NewStub (Channel);

Channel->GetState () ? 

[Yang Gao]

What kind of error are you seeing?

Are there any error logs printed?