diff options
Diffstat (limited to 'src/code/2/echo_server/lib/echo_server')
-rw-r--r-- | src/code/2/echo_server/lib/echo_server/echo.ex | 36 | ||||
-rw-r--r-- | src/code/2/echo_server/lib/echo_server/supervisor.ex | 18 |
2 files changed, 54 insertions, 0 deletions
diff --git a/src/code/2/echo_server/lib/echo_server/echo.ex b/src/code/2/echo_server/lib/echo_server/echo.ex new file mode 100644 index 0000000..3a96f29 --- /dev/null +++ b/src/code/2/echo_server/lib/echo_server/echo.ex @@ -0,0 +1,36 @@ +defmodule EchoServer.Echo do + + def accept(port) do + {:ok, socket} = :gen_tcp.listen( + port, + [:binary, packet: :line, active: false, reuseaddr: true]) + loop_acceptor(socket) + end + + defp loop_acceptor(socket) do + {:ok, client} = :gen_tcp.accept(socket) + {:ok, pid} = Task.Supervisor.start_child( + EchoServer.TaskSupervisor, fn -> serve(client) end) + :ok = :gen_tcp.controlling_process(client, pid) + loop_acceptor(socket) + end + + defp serve(socket) do + socket + |> read_line + |> (fn(x) -> "> " <> x end).() + |> write_line(socket) + + serve(socket) + end + + defp read_line(socket) do + {:ok, data} = :gen_tcp.recv(socket, 0) + data + end + + defp write_line(line, socket) do + :gen_tcp.send(socket, line) + end + +end diff --git a/src/code/2/echo_server/lib/echo_server/supervisor.ex b/src/code/2/echo_server/lib/echo_server/supervisor.ex new file mode 100644 index 0000000..e770a3a --- /dev/null +++ b/src/code/2/echo_server/lib/echo_server/supervisor.ex @@ -0,0 +1,18 @@ +defmodule EchoServer.Supervisor do + use Supervisor + + def start_link do + Supervisor.start_link(__MODULE__, [], name: __MODULE__) + end + + def init(_) do + children = [ + supervisor(Task.Supervisor, [[name: EchoServer.TaskSupervisor]]), + worker(Task, [EchoServer.Echo, :accept, [1337]]) + ] + + opts = [strategy: :one_for_one] + supervise(children, opts) + end + +end |