new Smb2SessionSetupRequest(mockContext, TEST_SECURITY_MODE, TEST_CAPABILITIES, TEST_PREVIOUS_SESSION_ID, token);

        // Use reflection to access pad8 method
        Method pad8Method = ServerMessageBlock2.class.getDeclaredMethod("pad8", int.class);
        pad8Method.setAccessible(true);

        // Test various positions
        int[] positions = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 16 };

                dstIndex += cnBytes.length;
                dstIndex += pad8(dstIndex);

                SMBUtil.writeInt2(dstIndex - structStart, dst, dataOffsetOffset);
                final int len = createContext.encode(dst, dstIndex);
                SMBUtil.writeInt4(len, dst, dataLengthOffset);
                dstIndex += len;

                final int pad = pad8(dstIndex);
                totalCreateContextLength += len + pad;

        final int actual = getLength();
        if (exp != actual) {
            // Log the size mismatch for debugging but don't throw exception
            // This can occur due to padding alignment differences between size8() and pad8()
            if (log.isDebugEnabled()) {
                log.debug("Size calculation mismatch: expected {} but got {} (difference: {})", exp, actual, actual - exp);
            }
        }
        return len;
    }

        dstIndex += writeHeaderWireFormat(dst, dstIndex);

        this.byteCount = writeBytesWireFormat(dst, dstIndex);
        dstIndex += this.byteCount;
        dstIndex += pad8(dstIndex);

        this.length = dstIndex - start;

        int len = this.length;

        if (this.next != null) {
            final int nextStart = dstIndex;

        dstIndex += 2;
        SMBUtil.writeInt8(this.previousSessionId, dst, dstIndex);
        dstIndex += 8;
        SMBUtil.writeInt2(dstIndex - getHeaderStart(), dst, offsetOffset);

        dstIndex += pad8(dstIndex);

        if (this.token != null) {
            System.arraycopy(this.token, 0, dst, dstIndex, this.token.length);
            dstIndex += this.token.length;
        }

        return dstIndex - start;

        }
        dstIndex += 8;

        for (final int dialect : this.dialects) {
            SMBUtil.writeInt2(dialect, dst, dstIndex);
            dstIndex += 2;
        }

        dstIndex += pad8(dstIndex);

        if (this.negotiateContexts != null && this.negotiateContexts.length != 0) {
            SMBUtil.writeInt4(dstIndex - getHeaderStart(), dst, negotitateContextOffsetOffset);

            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

                this.pad1 = this.pad(this.parameterOffset);
                this.parameterOffset += this.pad1;
            }

            // caclulate parameterDisplacement before calculating new parameterCount
            this.parameterDisplacement += this.parameterCount;

            int available = this.maxBufferSize - this.parameterOffset - this.pad1;

            available -= parameterCount;

            dataOffset = parameterOffset + parameterCount;
            pad1 = dataOffset % PADDING_SIZE;
            pad1 = pad1 == 0 ? 0 : PADDING_SIZE - pad1;
            dataOffset += pad1;

            dataDisplacement += dataCount;

            available -= pad1;
            dataCount = Math.min(totalDataCount - dataDisplacement, available);
        }

                + dataCount + ",dataOffset=" + dataOffset + ",dataDisplacement=" + dataDisplacement + ",setupCount=" + setupCount + ",pad="
                + pad + ",pad1=" + pad1);
    }