Local listen

Your app listens on

AWS_LAMBDA_HTTP_ENDPOINTAWS_LAMBDA_HTTP_ENDPOINT
Environment variable host:port that your HTTP server must listen on. Lambda sets it in the cloud; set it yourself for local runs (for example 127.0.0.1:3000).

(host:port). Locally you set it; on Lambda, Lambda sets it. Same listen code either way.

Run the demo

From the repo root:

cd demo

npm install

added 65 packages, and audited 66 packages in 1s

AWS_LAMBDA_HTTP_ENDPOINT=127.0.0.1:3000 npm start

> wf-hello-demo@1.0.0 start
> node index.js

Server listening on 127.0.0.1:3000

Leave that process running. In another terminal:

curl http://127.0.0.1:3000/

{"message":"Hello from Lambda Web Functions!","path":"/"}

curl http://127.0.0.1:3000/health

{"status":"healthy"}

Any server that binds AWS_LAMBDA_HTTP_ENDPOINT works — including the console Hello World template later.