EWS request fails because not Internet - soap

Question

I am calling EWS service on internal network which has not access to Internet.
I can open EWS url with browser and verify that it is up an running.
But when I try to send the SOAP request.
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<t:RequestServerVersion Version="Exchange2007_SP1" />
</soap:Header>
<soap:Body>
<m:GetFolder>
<m:FolderShape>
<t:BaseShape>IdOnly</t:BaseShape>
</m:FolderShape>
<m:FolderIds>
<t:DistinguishedFolderId Id="calendar" />
</m:FolderIds>
</m:GetFolder>
</soap:Body>
</soap:Envelope>
It fails with error ENOTFOUD. I am assuming that it can not connect to given address in the SOAP xml for schema definitions.
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
How to deal with this when there is no internet connection.
I am sending request from meteor.js app using lather.js library.

Answer 1

The stuff that looks like URL:s, prefixed with xmlns, are just name spaces and shall not be called. A bit like namespaces in a java program (for example namespace com.sun.something) is not an url you can call.
You should just do a http POST and send the entire xml file to the soap server, which can be an internal ip number that is not on the internet.