Advanced Python Programming

Starting a server

In the Chapter18/example1.py file, let's look at the EchoServerClientProtocol class, as follows:

# Chapter18/example1.pyimport asyncioclass EchoServerClientProtocol(asyncio.Protocol):    def connection_made(self, transport):        peername = transport.get_extra_info('peername')        print('Connection from {}'.format(peername))        self.transport = transport    def data_received(self, data):        message = data.decode()        print('Data received: {!r}'.format(message))

Here, our EchoServerClientProtocol class is a subclass of asyncio.Protocol. As we discussed earlier, inside of this class, we need to implement the connection_made(transport) and data_received(data) methods. In the connection_made() method, we simply obtain the address of the connected system ...