Add PROXY protocol support to Caddy 2

proxy_protocol is a listener wrapper for Caddy 2 that adds support for PROXY headers on new connections.

Configuration

Options

JSON

The wrapper needs to be loaded BEFORE the tls wrapper.

{
  "apps": {
    "http": {
      "servers": {
        "myserver": {
          // ...
          "listener_wrappers":[
            {"wrapper": "proxy_protocol", "timeout": "5s", "allow": ["192.168.86/24"]},
            {"wrapper":"tls"}
          ]
          // ...
        }
      }
    }
  }
}

Caddyfile

The wrapper may be configured via global options in the Caddyfile.

{
  servers {
    listener_wrappers {
      proxy_protocol {
        timeout <duration>
        allow <cidrs...>
      }
      tls
    }
  }
}