Very simple plug which reads X-Forwarded-For or Forwarded header according to rfc7239 and fill conn.remote_ip with the root client ip.

Add to your list of dependencies in mix.exs:

def deps do
  [
    {:plug_forwarded_peer, "~> 0.2.0"}
  ]
end

In Phoenix:

defmodule MyApp.Endpoint do
  use Phoenix.Endpoint, otp_app: :my_app

  ...

  plug PlugForwardedPeer
end

Or in plain elixir:

defmodule MyPlug do
  use Plug.Builder
  plug PlugForwardedPeer
end

Hi, and thank you for wanting to contribute. Please refer to the centralized informations available at: https://github.com/kbrw#contributing