gRPC authenticated channel using custom access token in nodejs

I'm using latest version of gRPC and I'm using node.js to make an authenticated channel using custom access token and ssl certificate

Brief explanation: I was trying to make authenticated channel using combined credentials (ie. ssl_creds & call_creds) as shown in http://www.grpc.io/docs/guides/auth.html#authenticate-with-google-4. But instead of using google auth, I was trying to use my own access token.

I am getting errors such as

W20170523-10:25:15.721(-3)? (STDERR) plainSignature.push( signature[key].name );
W20170523-10:25:15.720(-3)? (STDERR)                                    ^
W20170523-10:25:15.728(-3)? (STDERR) TypeError: Cannot read property 'name' of null
W20170523-10:25:15.733(-3)? (STDERR) at __ (C:\Users\xxxxxx\Desktop\Meteor_Practice\node_modules\arguejs\argue.js:117:46)

Can anyone please provide example code to achieve a authenticated channel using ssl certificate & custom access token

FYI - There is a way to do this in python - http://www.grpc.io/grpc/python/_modules/grpc.html#access_token_call_credentials. I want to do the same in node.js.

Thanks in advance.

via Prasanna Elangovan