Example : a german 'ü' is encoded as 252 but must be c3bc (50108).

<D:displayname>Meißner Üösülämi</D:displayname>

Is

<D:displayname>Mei&#223;ner &#220;&#246;s&#252;l&#228;mi</D:displayname>

Return

HTTP/1.1 207 Multi-Status

Date: Mon, 10 Jan 2022 16:30:27 GMT
Server: SOPE 4.9.37/WebDAV
Referrer-Policy: same-origin
Content-Type: text/xml; charset="utf-8"
X-Dav-Error: 200 No error
Ms-Author-Via: DAV
Pragma: no-cache
Content-Length: 3548
Cache-Control: no-cache

<?xml version="1.0" encoding="utf-8"?>

<?xml version="1.0" encoding="UTF-8"?>
<D:multistatus xmlns:D="DAV:" xmlns:ap="http://apache.org/dav/props/">
   <D:response>
      <D:href>/SOGo/dav/carddavtestuser@SOGo.Domain/Contacts/personal/183358-6133BB80-3-7158B900.vcf</D:href>
      <D:propstat>
         <D:status>HTTP/1.1 200 OK</D:status>
         <D:prop>
            <D:creationdate>Sat, 04 Sep 2021 20:32:42 +0100</D:creationdate>
            <D:getcontentlength>168</D:getcontentlength>
            <D:getlastmodified>Sat, 04 Sep 2021 21:34:07 +0100</D:getlastmodified>
            <D:getetag>&quot;gcs00000001&quot;</D:getetag>
            <D:resourcetype />
            <D:getcontenttype>text/x-vcard</D:getcontenttype>
            <D:displayname>Mei&#223;ner &#220;&#246;s&#252;l&#228;mi</D:displayname>
            <D:href>/SOGo/dav/carddavtestuser@SOGo.Domain/Contacts/personal/183358-6133BB80-3-7158B900.vcf</D:href>
            <ap:executable>0</ap:executable>
         </D:prop>
      </D:propstat>
   </D:response>
</D:multistatus>