Hi, I want to automate a request which takes files as 'SteamBody'. How can i proceed ?

The XML request is something like :

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:fil="XXX">
<soapenv:Header>
<fil:FileName>namit.txt</fil:FileName>
<fil:FileGUID>8190A482-BB35-4EF8-BD4F-B458C3E8D536</fil:FileGUID>
<fil:ConfigId>1026</fil:ConfigId>
<fil:CiqUserId>32083</fil:CiqUserId>
</soapenv:Header>
<soapenv:Body>
<fil:FileIngestionData>
<fil:File>cid:Testdate.txt</fil:File> is the file i need to send via Stream
</fil:FileIngestionData>
</soapenv:Body>
</soapenv:Envelope>

How can i automate this ?