Hello,

I’m attempting to communicate with the Verisign EPP server over a TCP / SSL connection. This connection requires an SSL certificate, but I’m having trouble with the SSL certificate. I am inexperienced in working with anything like this, in the past all I’ve done is use Req to send various requests of different verbs. So has anyone written a library to make this easier? Or can anyone assist in the correct configuration of including an SSL certificate, sending a request and listening for a response? Here’s what I have so far, just shooting in the dark:

  def ssl_client() do
    host = Application.get_env(:appname, :epp_host) |> String.to_charlist()
    port = Application.get_env(:appname, :epp_port)
    cert = File.cwd!() <> "/ssl/cert.chain.pem"

    {:ok, connect_socket} =
      :ssl.connect(host, port, [verify: :verify_none, cacertfile: cert, active: true], :infinity)

    connect_socket
  end

  defp listen_ssl(socket) do
    case :ssl.recv(socket, 0) do
      {:ok, line} ->
        IO.puts(~s(Client got: "#{String.trim(line)}"))
        :ok = :ssl.close(socket)

      {:error, :closed} ->
        IO.puts("Server closed socket.")

      {:error, :enotconn} ->
        IO.puts("Server is not connected.")

      {:error, reason} ->
        IO.puts("Server errored with code: #{reason}")
    end
  end

  def send_ssl_request(line) do
    socket = ssl_client()
    :ssl.send(socket, line)
    listen_ssl(socket)
  end

The response that I get when I attempt to call send_ssl_request() is:
TLS :client: In state :connection received SERVER ALERT: Fatal - Bad Certificate

Thanks!