Querying Exchange Web Services fails with 400 Bad Request - powershell

Question

I am trying to get some information from a specific calendar using EWS and Powershell.
I have a powershell function that I use to query EWS
Function EWSSoapRequest
{
param (
$soapRequest,
$exchangeServerAddress
)
# Create the request
$webRequest = [System.Net.WebRequest]::Create($exchangeServerAddress)
$webRequest.ContentType = "text/xml"
$webRequest.Headers.Add("Translate", "F")
$webRequest.Method = "Post"
$webRequest.Credentials = $credentials
# Setup the soap request to send to the server
$content = [System.Text.Encoding]::UTF8.GetBytes($soapRequest)
$webRequest.ContentLength = $content.Length
$requestStream = $webRequest.GetRequestStream()
$requestStream.Write($content, 0, $content.Length)
$requestStream.Close()
# Get the xml response from the server
$webResponse = $webRequest.GetResponse()
$responseStream = $webResponse.GetResponseStream()
$responseXml = [xml](new-object System.IO.StreamReader $responseStream).ReadToEnd()
$responseStream.Close()
$webResponse.Close()
$responseXml
}
I can get the list of calendar items just fine, using this XML:
$soapRequestOverview = #'
<?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="Exchange2010_SP2" />
<t:ExchangeImpersonation>
<t:ConnectingSID>
<t:SmtpAddress>user#domain.dk</t:SmtpAddress>
</t:ConnectingSID>
</t:ExchangeImpersonation>
</soap:Header>
<soap:Body>
<FindItem Traversal="Shallow" xmlns="http://schemas.microsoft.com/exchange/services/2006/messages">
<ItemShape>
<t:BaseShape>IdOnly</t:BaseShape>
<t:AdditionalProperties>
<t:FieldURI FieldURI="calendar:Start"/>
<t:FieldURI FieldURI="calendar:End"/>
<t:FieldURI FieldURI="item:Subject"/>
</t:AdditionalProperties>
</ItemShape>
<CalendarView MaxEntriesReturned="100" StartDate="{0}" EndDate="{1}"/>
<ParentFolderIds>
<t:DistinguishedFolderId Id="calendar"/>
</ParentFolderIds>
</FindItem>
</soap:Body>
</soap:Envelope>
'#
That gives me a list of entries in the given calendar (I replace the state and end date before calling the web service function. Then from the list of calendar items returned I use the ItemID property to try and query detailed information like location etc. But it is here I run into problems.
I use this XML to make the query and use the EWSSoapRequest function as before, but I keep getting 400 Bad request back. If I copy/paste the xml into SoapUI then I get a response just fine with the expected data.
$SoapRequestDetail = #'
<?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="Exchange2010_SP2" />
<t:ExchangeImpersonation>
<t:ConnectingSID>
<t:SmtpAddress>user#domain.dk</t:SmtpAddress>
</t:ConnectingSID>
</t:ExchangeImpersonation>
</soap:Header>
<soap:Body>
<m:GetItem>
<m:ItemShape>
<t:BaseShape>AllProperties</t:BaseShape>
</m:ItemShape>
<m:ItemIds>
<t:ItemId Id="AAMkADU3MzNlNjQxLTA3NDYtNDA4MS1hMmJhLTg5MmUxOTM2NzI3YwBGAAAAAABifraNBbAgRq+5NEGUOyNbBwBOxvhv/eH/R6wHrO/Hc4RhAAABnAHkAAChTN/6w47WS4YxX5iYDfnHAABfYm2zAAA=" />
</m:ItemIds>
</m:GetItem>
</soap:Body>
</soap:Envelope>
'#
Is it just me overlooking something obvious ?

Answer 1

Try using this XML instead
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<soap:Header>
<t:RequestServerVersion Version="Exchange2010_SP2" />
<t:ExchangeImpersonation>
<t:ConnectingSID>
<t:SmtpAddress>user#domain.com</t:SmtpAddress>
</t:ConnectingSID>
</t:ExchangeImpersonation>
</soap:Header>
<soap:Body>
<GetItem
xmlns="http://schemas.microsoft.com/exchange/services/2006/messages"
xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<ItemShape>
<t:BaseShape>AllProperties</t:BaseShape>
</ItemShape>
<ItemIds>
<t:ItemId Id="AAAlAF" />
</ItemIds>
</GetItem>
</soap:Body>
</soap:Envelope>
Cheers
Glen