secho.py 文件源码

def echo_server(address):
    # Create a TCP/IP socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # Running several times with too small delay between executions,
    # could lead to: socket.error: [Errno 98] Address already in use
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
    # Associate the socket with the provided server address
    sock.bind(address)
    # Listen for incoming connections
    sock.listen(1)

    while True:
        # Wait for a connection
        connection, addr = sock.accept()
        # accept() returns an open connection between the server and client + the
        # address of the client. The connection is different socket on another port
        echo_handler(connection, addr)