Function bind_top_down

scapy/packet.py:2073–2091

Bind 2 layers for building. When the upper layer is added as a payload of the lower layer, all the arguments will be applied to them. ex: >>> bind_top_down(Ether, SNAP, type=0x1234) >>> Ether()/SNAP() >

(lower,  # type: Type[Packet]
                  upper,  # type: Type[Packet]
                  __fval=None,  # type: Optional[Any]
                  **fval  # type: Any
                  )

def bind_top_down(lower,  # type: Type[Packet]
                  upper,  # type: Type[Packet]
                  __fval=None,  # type: Optional[Any]
                  **fval  # type: Any
                  ):
    # type: (...) -> None
    """Bind 2 layers for building.
    When the upper layer is added as a payload of the lower layer, all the
    arguments will be applied to them.

    ex:
        >>> bind_top_down(Ether, SNAP, type=0x1234)
        >>> Ether()/SNAP()
        <Ether  type=0x1234 |<SNAP  |>>
    """
    if __fval is not None:
        fval.update(__fval)
    upper._overload_fields = upper._overload_fields.copy()  # type: ignore
    upper._overload_fields[lower] = fval


@conf.commands.register