Untitled

REPORT /dav/principals/ HTTP/1.0
Accept: */*
Content-type: text/xml
Connection: close
Content-length: 396
Host: caldav.messagingengine.com
User-agent: iOS/9.2 (13C75) dataaccessd/1.0
Prefer: return=minimal
Depth: 0
Brief: t
Accept-language: en-au
Authorization: Basic ...
Accept-encoding: gzip, deflate

<?xml version="1.0" encoding="UTF-8"?>
<A:principal-property-search xmlns:A="DAV:" test="anyof" type="INDIVIDUAL">
  <A:prop>
    <C:record-type xmlns:C="http://calendarserver.org/ns/"/>
    <A:principal-URL/>
    <B:calendar-user-type xmlns:B="urn:ietf:params:xml:ns:caldav"/>
    <B:calendar-user-address-set xmlns:B="urn:ietf:params:xml:ns:caldav"/>
  </A:prop>
</A:principal-property-search>

HTTP/1.1 400 Bad Request
Connection: close
Date: Thu, 17 Dec 2015 22:13:45 GMT
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8
Content-Length: 493

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
  <head>
    <title>400 Bad Request</title>
  </head>
  <body>
    <h1>Bad Request</h1>
    <p>Missing DAV:property-search XML element</p>
    <hr>
    <address>Cyrus-HTTP/3.0.0-beta1-git-future-12249 Cyrus-SASL/2.1.25 OpenSSL/1.0.0 Zlib/1.2.7 LibXML2.9.1 SQLite/3.7.13 LibICal/2.0 ICU4C/4.8.1.1 Jansson/2.7 Server at caldav.messagingengine.com Port 2080</address>
  </body>
</html>