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defmodule Octonetcat.Echo do
@moduledoc """
Echo TCP Socket Server
Started under a task supervisor, lives for the life of the socket,
dies on failure or disconnect.
"""
require Logger
def serve(socket) do
socket
|> read_line()
|> write_line!(socket)
serve(socket)
end
def read_line(socket) do
case :gen_tcp.recv(socket, 0) do
{:ok, line} -> line
{:error, reason} ->
Logger.error(reason)
Process.exit(self(), :normal)
end
end
def write_line!(line, socket) do
:gen_tcp.send(socket, line)
end
end
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