services:
- name: proxy
  addr: :8080
  handler:
    type: http
    chain: my-chain
  listener:
    type: tcp

# Live relay: forwards the request to the echo server (curl target).
- name: relay
  addr: 127.0.0.1:18081
  handler:
    type: http
  listener:
    type: tcp

chains:
- name: my-chain
  hops:
  - name: hop-1
    selector:
      strategy: round
      maxFails: 1
    nodes:
    - name: node-1
      addr: 127.0.0.1:18081
      connector:
        type: http
    # dead node: never listens; must be marked and skipped by the selector.
    - name: node-2
      addr: 127.0.0.1:18082
      connector:
        type: http