dialback.xsd

<?xml version='1.0' encoding='UTF-8'?>

<xs:schema
    xmlns:xs='http://www.w3.org/2001/XMLSchema'
    targetNamespace='jabber:server:dialback'
    xmlns='jabber:server:dialback'
    elementFormDefault='qualified'>

  <xs:annotation>
    <xs:documentation>
      The protocol documented by this schema is defined in
      XEP-0220: https://xmpp.org/extensions/xep-0220.html
    </xs:documentation>
  </xs:annotation>

  <xs:import namespace='urn:ietf:params:xml:ns:xmpp-stanzas'
             schemaLocation='https://xmpp.org/schemas/stanzaerror.xsd'/>

  <xs:element name='result'>
    <xs:complexType mixed='true'>
      <xs:all>
        <xs:element name='error' type='errorType'/>
      </xs:all>
      <xs:attribute name='from' type='xs:string' use='required'/>
      <xs:attribute name='to' type='xs:string' use='required'/>
      <xs:attribute name='type' use='optional'>
        <xs:simpleType>
          <xs:restriction base='xs:NCName'>
            <xs:enumeration value='error'/>
            <xs:enumeration value='invalid'/>
            <xs:enumeration value='valid'/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>

  <xs:element name='verify'>
    <xs:complexType mixed='true'>
      <xs:all>
        <xs:element name='error' type='errorType'/>
      </xs:all>
      <xs:attribute name='from' type='xs:string' use='required'/>
      <xs:attribute name='to' type='xs:string' use='required'/>
      <xs:attribute name='id' type='xs:NMTOKEN' use='required'/>
      <xs:attribute name='type' use='optional'>
        <xs:simpleType>
          <xs:restriction base='xs:NCName'>
            <xs:enumeration value='error'/>
            <xs:enumeration value='invalid'/>
            <xs:enumeration value='valid'/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>

  <xs:complexType name='errorType'>
    <xs:sequence xmlns:err='urn:ietf:params:xml:ns:xmpp-stanzas'>
      <xs:group ref='err:stanzaErrorGroup'/>
    </xs:sequence>
  </xs:complexType>

</xs:schema>