This sample project help to filter the DLRs, to allow only statuses: "delivered", "expired", "failed", "rejected", and "unknown" DLRs to hit the customer webhook

1. clone the project and run npm install
2. create neru project, follow instruction in https://vonage-neru.herokuapp.com/neru/getting-started
3. rename neru.example.yml to neru.yml and replace the variables with your neru project info.
4. deploy the app to neru

To configure the customer dlrs webhook:

1. login to the deployed neru app
2. Set the dlrs customer webhook url to point to your server destination: ex: https://{{domain}}/{{region}}/test/drls (noted: any text encloded in double curly braces will be replaced by the neru proxy)
3. Click submit button

Set SMS callback url:

1. set the custom SMS API callback url to: https://{{your-neru-app-domain}}/dlr/?{{param1}}%26{{param2}} ex: https://neru-123abc-dlr-dev.apse1.serverless.vonage.com/dlr/?domain=www.example.com%26region=sg

With setup above, only the allowed SMS DLSs will be forwarded to customer dlrs webhook (ex: https://www.example.com/sg/test/drls)