Hello ,

I would like to monitore phoenix socket process, to count the current user connected to my application, without having them to join a channel.

defmodule ChatWeb.UserSocket do

use Phoenix.Socket

channel "topic:*", ChatWeb.Channel

  def connect(_params, socket) do
    :ok = SocketWatcher.monitor(socket.transport_pid)
    {:ok, socket}
  end

  def id(_socket), do: nil

end

The problem here is that transport_pid is nil…
As explained chrismccord in this post, a socket transport_id field is nil until the connection has been authorized in UserSocket.connect/3.

Is there a way to implement a callback for UserSocket.connect/3 method, where i can get this transport_id and monitore it.

Thanks for your help.