An extremely basic asyncio TCP echo server

Bare bones asyncio TCP Echo server

import asyncio

class Echo(asyncio.Protocol):
    def connection_made(self, transport):
        print('connection made')
        self.transport = transport

    def connection_lost(self, exc):
        print('connection lost:', exc)

    def data_received(self, data):
        print('Server recv: ', data.decode())
        self.transport.write(b'Echo: ' + data)

loop = asyncio.get_event_loop()

server = loop.create_server(Echo, '127.0.0.1', 80)
loop.run_until_complete(server)

try:
    loop.run_forever()
except KeyboardInterrupt:
    loop.close()