test_socket.py 文件源码

def _have_socket_can():
    """Check whether CAN sockets are supported on this host."""
    try:
        s = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
    except (AttributeError, OSError):
        return False
    else:
        s.close()
    return True