Content length?

I have a problem deciding what the content length of the following SOAP message is.

POST /Service HTTP/1.1
Host: xxx.xxx.xx.xxx:xxxx
Content-Type: text/xml; charset=utf-8
SOAPAction: "publishXmlEvent"
Content-Length: ???
Connection: Close

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <soap:Body>
    <publishXmlEvent xmlns="http://eventmanager.linksmart.eu">
      <eventXmlString>
        &lt;?xml version="1.0" encoding="utf-8"?&gt;
        &lt;Event xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" about="f4605a3b-cad6-4198-a4d2-9760e799aa81" prefix="inertia:http://ns.inertia.eu/ontologies linksmart:http://linksmart.org/Ontologies/1.0#Draft" eventStatus="Production" schemaVersion="0.5.0" systemsID="LinkSmart" xmlns="http://linksmart.org/Event/1.0"&gt;
        &lt;EventMeta&gt;
        &lt;EventType typeof="TempSensorDevice" /&gt;
        &lt;Topic typeof="OBSERVATION" /&gt;
        &lt;/EventMeta&gt;
        &lt;Content&gt;
        &lt;IoTEntity xmlns="http://linksmart.org/IoTEntity/1.0"&gt;
        &lt;Name&gt;TempSensorDevice&lt;/Name&gt;
        &lt;IoTProperty about="01842FD8:TempSensorDevice" typeof="inertia:TempSensorDevice"&gt;
        &lt;IoTStateObservation&gt;
        &lt;Value&gt;33&lt;/Value&gt;
        &lt;/IoTStateObservation&gt;
        &lt;/IoTProperty&gt;
        &lt;/IoTEntity&gt;
        &lt;/Content&gt;
        &lt;/Event&gt;
      </eventXmlString>
    </publishXmlEvent>
  </soap:Body>
</soap:Envelope>

When I counted the number of chars I got 1217 and that is without the newline chars, some help would be highly appreciated.

"The Content-Length entity-header field indicates the size of the entity-body, in decimal number of OCTETs, sent to the recipient or, in the case of the HEAD method, the size of the entity-body that would have been sent had the request been a GET."

Sounds like you should be counting the line endings, too.