The pipeline
<p:declare-step xmlns:c="http://www.w3.org/ns/xproc-step" xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-inline-prefixes="c xs" version="3.0">
<p:output port="result">
<p:http-request xmlns:chttp="http://www.w3.org/ns/xproc-http" href="http://localhost:8246/service/check-multipart" method="post">
<p:with-input>
<p:inline document-properties="map{ 'chttp:content-id': 'abcdefg', 'chttp:content-description': 'First document' }">
<doc1/>
</p:inline>
<p:inline document-properties="map{ 'chttp:content-description': 'Second document', 'chttp:content-disposition': 'attachment; filename=abc.xml', 'chttp:random-header': 'value' }">
<doc2/>
</p:inline>
</p:with-input>
</p:http-request>
</p:declare-step>
Schematron validation
<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:ns prefix="p" uri="http://www.w3.org/ns/xproc">
<s:ns prefix="c" uri="http://www.w3.org/ns/xproc-step">
<s:pattern>
<s:rule context="/*">
<s:assert test="self::check-multipart">The root is not check-multipart.</s:assert>
<s:assert test="part[1]/header[lower-case(@name) = 'content-description'] = 'First document'">The content-description of the first part is incorrect.</s:assert>
<s:assert test="part[1]/header[lower-case(@name) = 'content-id'] = 'abcdefg'">The content-id of the first part is incorrect.</s:assert>
<s:assert test="part[2]/header[lower-case(@name) = 'content-description'] = 'Second document'">The content-description of the second part is incorrect.</s:assert>
<s:assert test="part[2]/header[lower-case(@name) = 'content-disposition'] = 'attachment; filename=abc.xml'">The content-disposition of the second part is incorrect.</s:assert>
<s:assert test="part[2]/header[lower-case(@name) = 'random-header'] = 'value'">The random-header of the second part is incorrect.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
