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A simple & modern pure Elixir socket server
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lib/thousand_island/handlers/messenger.ex
defmodule ThousandIsland.Handlers.Messenger do
@moduledoc """
A sample Handler implementation that allows for simultaneous bidirectional sending
of messages to demonstrate that the Handler process is just a GenServer under the
hood
"""
use ThousandIsland.Handler
def send_message(pid, msg) do
GenServer.cast(pid, {:send, msg})
end
@impl ThousandIsland.Handler
def handle_connection(socket, state) do
%{address: remote_address} = ThousandIsland.Socket.peer_info(socket)
IO.puts("#{inspect(self())} received connection from #{remote_address}")
{:ok, :continue, state}
end
@impl ThousandIsland.Handler
def handle_data(msg, _socket, state) do
IO.puts("Received #{msg}")
{:ok, :continue, state}
end
@impl GenServer
def handle_cast({:send, msg}, {socket, state}) do
ThousandIsland.Socket.send(socket, msg)
{:noreply, {socket, state}}
end
end