Method addfield

scapy/fields.py:678–687

(self,
                 pkt,  # type: Packet
                 s,  # type: bytes
                 val,  # type: Any
                 )

        return self.fld.getfield(pkt, s[padlen:])

    def addfield(self,
                 pkt,  # type: Packet
                 s,  # type: bytes
                 val,  # type: Any
                 ):
        # type: (...) -> bytes
        sval = self.fld.addfield(pkt, b"", val)
        return s + struct.pack("%is" % (
            self.padlen(len(s), pkt)
        ), self._padwith) + sval


class TrailerBytes(bytes):