import socket
HOST = ''                 # Что нужно указать в качестве хоста???
PORT = 9090              # Arbitrary non-privileged port
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.bind((HOST, PORT))
    s.listen(1)
    conn, addr = s.accept()
    with conn:
        print('Connected by', addr)
        while True:
            data = conn.recv(1024)
            if not data: break
           conn.sendall(data)

 import socket
HOST = '188.19.108.47'    # Сюда прописываем внешний ip (сайт - [url=2ip.ru]Your text to link here...[/url])
PORT = 9090              # The same port as used by the server
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    s.sendall(b'Hello, world')
    data = s.recv(1024)
print('Received', repr(data))