tcp_server.py 文件源码

def _activate_keepalive(self, s, after_idle_sec=30, interval_sec=10,
                            max_fails=5):
        """Set TCP keepalive on an open socket.

        It activates after 30 second (after_idle_sec) of idleness,
        then sends a keepalive ping once every 10 seconds (interval_sec),
        and closes the connection after 5 failed ping (max_fails).
        """
        s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
        s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, after_idle_sec)
        s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, interval_sec)
        s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, max_fails)