# Simple server example using a non-blocking `TCPServer`
module socket_simple_server

import socket

if args.is_empty then
	print "Usage : socket_simple_server <port>"
	exit 1
end

var port = args[0].to_i

# Open the listening socket
var socket = new TCPServer(port)
socket.listen 4
socket.blocking = false

print "Listening on port {socket.port}"

# Loop until a single client connects
var client: nullable TCPStream = null
while client == null do
	printn "."
	sys.nanosleep(0, 200000)

	client = socket.accept
end
print " Connected"

# Communicate
print client.read_line
client.write "Hello client!\n"
print client.read_line
client.write "Bye client!\n"

client.close