Method addfield

scapy/layers/dcerpc.py:2470–2480

(self, pkt, s, val)

        )

    def addfield(self, pkt, s, val):
        fmt = _e(pkt.ndrendian) + self.switch_fmt[pkt.ndr64]
        if not isinstance(val, NDRUnion):
            raise ValueError(
                "Expected NDRUnion in %s. You are using it wrong!" % self.name
            )
        _set_ctx_on(val.value, pkt)
        # First, align the whole tag+union against the align param
        s = NDRAlign(Field("", 0, fmt=fmt), align=self.align).addfield(pkt, s, val.tag)
        # Then, compute the subfield with its own alignment
        return super(_NDRUnionField, self).addfield(pkt, s, val)

    def _find_fld_pkt_val(self, pkt, val):
        fld, val = super(_NDRUnionField, self)._find_fld_pkt_val(pkt, val)