#!/usr/bin/python
# -*- coding: utf-8 -*-

# Hive Netius System
# Copyright (c) 2008-2020 Hive Solutions Lda.
#
# This file is part of Hive Netius System.
#
# Hive Netius System is free software: you can redistribute it and/or modify
# it under the terms of the Apache License as published by the Apache
# Foundation, either version 2.0 of the License, or (at your option) any
# later version.
#
# Hive Netius System is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Apache License for more details.
#
# You should have received a copy of the Apache License along with
# Hive Netius System. If not, see <http://www.apache.org/licenses/>.

__author__ = "João Magalhães <joamag@hive.pt>"
""" The author(s) of the module """

__version__ = "1.0.0"
""" The version of the module """

__revision__ = "$LastChangedRevision$"
""" The revision number of the module """

__date__ = "$LastChangedDate$"
""" The last change date of the module """

__copyright__ = "Copyright (c) 2008-2020 Hive Solutions Lda."
""" The copyright for the module """

__license__ = "Apache License, Version 2.0"
""" The license for the module """

import asyncio

import netius

class EchoClientProtocol(object):

    def __init__(self, message, loop):
        self.message = message
        self.loop = loop
        self.transport = None

    def connection_made(self, transport):
        self.transport = transport
        print("Send: %s" % self.message)
        self.transport.sendto(self.message.encode())

    def datagram_received(self, data, addr):
        print("Received: %s" % data.decode())
        print("Close the socket")
        self.transport.close()

    def error_received(self, exc):
        print("Error received: %s" % exc)

    def connection_lost(self, exc):
        print("Socket closed, stop the event loop")
        loop = asyncio.get_event_loop()
        loop.stop()

message = "Hello World!"

loop = netius.get_loop(_compat = True)
connect = loop.create_datagram_endpoint(
    lambda: EchoClientProtocol(message, loop),
    remote_addr = ("127.0.0.1", 9999)
)
transport, protocol = loop.run_until_complete(connect)
loop.run_forever()
transport.close()
loop.close()
