python_socket_tcp_echo_server_quickstart.py

1# Echo server program
2import socket
3
4HOST = ''                 # Symbolic name meaning all available interfaces
5PORT = 50007              # Arbitrary non-privileged port
6with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
7    s.bind((HOST, PORT))
8    s.listen(1)
9    conn, addr = s.accept()
10    with conn:
11        print('Connected by', addr)
12        while True:
13            data = conn.recv(1024)
14            if not data: break
15            conn.sendall(data)