Method getfield

scapy/fields.py:249–260

Extract an internal value from a string Extract from the raw packet `s` the field value belonging to layer `pkt`. Returns a two-element list, first the raw packet string after having removed the extracted field, second the extracted field itself in internal

(self, pkt, s)

            )

    def getfield(self, pkt, s):
        # type: (Packet, bytes) -> Tuple[bytes, I]
        """Extract an internal value from a string

        Extract from the raw packet `s` the field value belonging to layer
        `pkt`.

        Returns a two-element list,
        first the raw packet string after having removed the extracted field,
        second the extracted field itself in internal representation.
        """
        return s[self.sz:], self.m2i(pkt, self.struct.unpack(s[:self.sz])[0])

    def do_copy(self, x):
        # type: (I) -> I