encode_in(buf);
        this.length = buf.getIndex() - start;

        if (this.ptype == 0) {
            buf.setIndex(alloc_hint_index);
            this.alloc_hint = this.length - alloc_hint_index;
            buf.enc_ndr_long(this.alloc_hint);
        }

        buf.setIndex(start);
        encode_header(buf);
        buf.setIndex(start + this.length);
    }

    @Override

        }

        encode_in(buf);
        length = buf.getIndex() - start;

        if (ptype == 0) {
            buf.setIndex(alloc_hint_index);
            alloc_hint = length - alloc_hint_index;
            buf.enc_ndr_long(alloc_hint);
        }

        buf.setIndex(start);
        encode_header(buf);
        buf.setIndex(start + length);
    }

    @Override

    }

    @Test
    void testEncodeHeaderAndDecodeHeader() throws Exception {
        TestMessage m = new TestMessage();
        m.ptype = 0; // request
        m.flags = 0x05;
        m.alloc_hint = 0;
        NdrBuffer buf = new NdrBuffer(new byte[1024], 0);
        m.encode(buf);
        // decode back
        buf.setIndex(0);
        m.decode_header(buf);
        assertEquals(0, m.ptype);
    }

                    n = max_xmit - 24;
                } else {
                    msg.flags |= DCERPC_LAST_FRAG;
                    isDirect = false;
                    msg.alloc_hint = n;
                }

                msg.length = 24 + n;

                if (off > 0) {
                    msg.flags &= ~DCERPC_FIRST_FRAG;
                }

                    .thenReturn(0); // flags
            when(mockBuffer.dec_ndr_long()).thenReturn(0x00000010) // Data representation
                    .thenReturn(1) // call_id
                    .thenReturn(100) // alloc_hint
                    .thenReturn(0); // From TestDcerpcMessage.decode_out
            when(mockBuffer.dec_ndr_short()).thenReturn(100) // length
                    .thenReturn(0) // auth_value length

                msg.flags &= ~DCERPC_LAST_FRAG;
                fragSize = this.max_xmit - 24;
            } else {
                msg.flags |= DCERPC_LAST_FRAG;
                msg.alloc_hint = fragSize;
            }

            msg.length = 24 + fragSize;

            if (off > 0) {
                msg.flags &= ~DCERPC_FIRST_FRAG;
            }