libxml2在元素类型anyURI包含特殊字符（例如“ [”，“ [”）的xsd模式验证上失败

Question

I am using go-libxml2 for my xsd schema validation. I have an XML element which takes url as a value. My xsd also contains its type as anyURI as follows

<xs:element name="url" type="xs:anyURI"> 

The following code throws error on validation url which contains "[]"

xsd.schema.Validate(xml)

The following is the sample url which throws an error

<url>
    <![CDATA[
        http://example.com/orda/var[div]=super
    ]]>
</url>

Error:

'http://example.com/orda/var[div]=super is not a valid value of the atomic type 'xs:anyURI'

Regular urls are working fine. Any idea how to solve this issue

Answer 1

See RFC3986 (emphasis mine):

A host identified by an Internet Protocol literal address, version 6 [RFC3513] or later, is distinguished by enclosing the IP literal within square brackets ("[" and "]"). This is the only place where square bracket characters are allowed in the URI syntax.

Try replacing them with %5b and %5d, respectively.