This technote is intended for developers interested in learning more about the Pusher's API. This is not a complete tutorial. Instead, you will be guided straightforwardly to a simple application with two NodeJS-based scripts: One for authentication purposes and other for the subscription function.

You will need to visit Pusher.com web service to get your app credentials. Once you get the data, make sure you edit the config-sample.json and rename it to config.json:

{
  "APP_ID"       : "REPLACE_APP_ID",
  "APP_KEY"      : "REPLACE_APP_KEY",
  "SECRET"       : "REPLACE_APP_SECRET",
  "authEndpoint" : "REPLACE_YOUR_URL:5000/pusher/auth",
  "cluster"      : "REPLACE_CLUSTER_NAME"
}

• "test_auth.js" — is the authentication system. This JavaScript application will be called from Pusher.com service. This application uses an NPM package named "Pusher" and it exposes the "/pusher/auth" end-point.

• Sample "test.js" will use the NPM package named "Pusher-JS" and will mainly attempt to subscribe to a private channel named "private-channel".