final int boundarySize = boundary.length;
        final int limitSize = getBoundaryLimitSize();
        if (boundarySize > getBoundaryLimitSize()) {
            throwTooLongBoundarySizeException(contentType, boundarySize, limitSize);
        }
    }

    protected int getBoundaryLimitSize() {
        // one HTTP proxy tool already limits the size (e.g. 3450 bytes)