Writing an HTTP server package

Let’s create a new goldcrest folder for all Goldcrest-related code, examples, and packages. Inside goldcrest, we can create our web server package by running the following command:

$ mix new goldcrest_http_server

Let’s now define the Goldcrest.HTTPServer module, which will be our main web server module:

lib/goldcrest_http_server.ex

defmodule Goldcrest.HTTPServer do
  @moduledoc """
  Starts a HTTP server on the given port
  This server also logs all requests
  """
  require Logger
  @server_options [
    active: false,
    packet: :http_bin,
    reuseaddr: true
  ]
  def start(port) do
    case :gen_tcp.listen(port, @server_options) do
      {:ok, sock} ->
        Logger...