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

Name	Type	Default	Description
timeout	duration	5s	Specifies the maximum time for the PROXY header to be received. If zero, timeout is disabled.
allow	[]string	0.0.0.0\0	A list of CIDR ranges to allow/require PROXY headers from.

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
    }
  }
}