SMBUtil.writeInt4(len, dst, dataLengthOffset);
                dstIndex += len;

                final int pad = pad8(dstIndex);
                totalCreateContextLength += len + pad;
                dstIndex += pad;
                lastStart = structStart;
            }
        }
        SMBUtil.writeInt4(totalCreateContextLength, dst, createContextLengthOffset);

        // Context handle (20 bytes)
        if (contextHandle != null) {
            buf.writeOctetArray(contextHandle, 0, Math.min(contextHandle.length, 20));
            // Pad with zeros if context handle is shorter than 20 bytes
            for (int i = contextHandle.length; i < 20; i++) {
                buf.enc_ndr_small(0);
            }
        } else {

            // String data in UTF-16LE
            buf.writeOctetArray(wideBytes, 0, wideBytes.length);
            buf.enc_ndr_short(0); // Wide null terminator

            // Pad to 4-byte boundary
            int padding = (4 - ((wideBytes.length + 2) % 4)) % 4;
            for (int i = 0; i < padding; i++) {
                buf.enc_ndr_small(0);
            }
        }
    }

    /**
     * This is an alternative to the <code>java.lang.Integer.toHexString</code>
     * method. It is an efficient relative that also will pad the left side so
     * that the result is <code>size</code> digits.
     *
     * @param val the integer value to convert to hexadecimal

        } while (si < length);

        ps.println(c);
    }

    /**
     * This is an alternative to the <code>java.lang.Integer.toHexString</code>
     * method. It is an efficient relative that also will pad the left side so
     * that the result is <code>size</code> digits.
     *
     * @param val the integer value to convert to hexadecimal

            System.arraycopy(buffer, hdrStart + securityBufferOffset, this.securityBuffer, 0, securityBufferLength);
            bufferIndex += securityBufferLength;
        }

        final int pad = (bufferIndex - hdrStart) % 8;
        bufferIndex += pad;

        if (this.dialectRevision == 0x0311 && negotiateContextOffset != 0 && negotiateContextCount != 0) {
            // Validate negotiate context offset

                off += 27;
                resp.decode(buffer, 4);
                /* EMC can send pad w/o data */
                final int pad = r.getDataOffset() - off;
                if (r.getByteCount() > 0 && pad > 0 && pad < 4) {
                    readn(this.in, buffer, 4 + off, pad);
                }

                if (r.getDataLength() > 0) {

            if (data != null && data.length > 0) {
                System.arraycopy(data, 0, dst, offset, data.length);
                offset += data.length;
            }

            // Pad to 8-byte boundary
            while ((offset - dstIndex) % 8 != 0) {
                dst[offset++] = 0;
            }

            return offset - dstIndex;
        }

        @Override

        // We will return a composite buffer from the test when building the full packet.
        // To keep this helper simple, return base and let the caller append/pad and inject ctx.
        return base;
    }

    /**
     * Build a full SMB2 packet combining header and provided body, optionally injecting context bytes.
     */

        // Context handle (20 bytes)
        if (contextHandle != null) {
            buf.writeOctetArray(contextHandle, 0, Math.min(contextHandle.length, 20));
            // Pad with zeros if context handle is shorter than 20 bytes
            for (int i = contextHandle.length; i < 20; i++) {
                buf.enc_ndr_small(0);
            }
        } else {