O que representa o seguinte trecho de código?

import socket

import ssl

pemServer = "ca.crt"

keyClient = "DemoServerTest.key"

pemClient = "DemoServerTest.crt"

context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)

context.options |= (ssl.OP_NO_TLSv1 | ssl.OP_NO_TLSv1_1)

context.verify_mode = ssl.CERT_OPTIONAL

context.load_verify_locations(pemServer)

context.load_cert_chain(certfile=pemClient, keyfile=keyClient)

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server = context.wrap_socket(server)

server.bind(('127.0.0.1', 4443))

server.listen(5)

while True:

    print("Waiting for connection")

    conn, addr = server.accept()

    from_client = ''

    while True:

        data = str(conn.recv(4096), encoding='utf-8')

        if not data:

            break

        from_client = from_client + data

        print(from_client)

        conn.send(bytes("Server --> This is the answer", encoding='utf-8'))

    conn.close()