# WARNING: This code is for DEBUG only.

# Listen to a UNIX socket, connect to another one.
require "ipc"

ipc = IPC.new
ipc.timer 5000 # timer event every 5 seconds
fd = ipc.connect "pong" # 'pong' service

ipc.loop do |event|
  case event.type
  when LibIPC::EventType::MessageRx
    m = event.message
    if m.nil?
      puts "No message"
    else
      received = String.new(m.to_unsafe, m.size)
      pp! received
      ipc.schedule event.fd, m, m.size
    end
  when LibIPC::EventType::MessageTx
    puts "A message has been sent"
  when LibIPC::EventType::Connection
    puts "A client just connected #JOY"
  when LibIPC::EventType::Disconnection
    puts "A client just disconnected #SAD"
  when LibIPC::EventType::Timer
    STDOUT.write "\rTimer!".to_slice
  when LibIPC::EventType::External
  else
    puts "Unexpected: #{event.type}"
    exit 1
  end
end

# Read an IPC network packet and remove the first 4 bytes.
buffer = Bytes.new 1_000_000
while true
	len = STDIN.read buffer
	break if len == 0
	STDOUT.write buffer[4.. len -1]
end

# Input to IPC network packets.
buffer = Bytes.new 1_000_000
while true
	len = STDIN.read buffer
	break if len == 0
	STDOUT.write_bytes len, IO::ByteFormat::BigEndian
	STDOUT.write buffer[0.. len -1]
end