Execute a one-way wcf service operation from powershell

Question

I have a scheduled task which executes a powershell script every hour. The powershell script must make a call to a one-way WCF service operation. Essentially it just needs to

Answer 1

I think the problem is that the code you have is actually creating an HttpWebRequest, not a WCF request. (In other words, it's simply executing an HTTP GET request on the URL, with no SOAP or .NET Remoting information.)

You should be able to follow these instructions to create a proper endpoint:

http://msdn.microsoft.com/en-us/magazine/cc163647.aspx#S11

It should look something like this:

$httpBinding = New-Object System.ServiceModel.BasicHttpBinding
$endpointAddress = New-Object System.ServiceModel.EndpointAddress 'http://myserver.com/myservice/dosomething'
$contractDescription = [System.ServiceModel.Description.ContractDescription]::GetContract([IYourInterface], $httpBinding, $endpointAddress)
$serviceEndpoint = New-Object System.ServiceModel.Description.ServiceEndpoint $contractDescription
$channelFactory = New-Object "System.ServiceModel.ChannelFactory``1[IYourInterface]" $serviceEndpoint
$webProxy = $channelFactory.CreateChannel();
$webProxy.yourServiceMethod();

Note that you'll need to import the DLL with the IYourInterface class for this to work:

[void] [Reflection.Assembly]::LoadFrom('path/to/your.dll')

Alternatively, if you have a WSDL defined for the service, you can follow these much easier instructions to access the service:

http://blogs.technet.com/heyscriptingguy/archive/2009/11/17/hey-scripting-guy-november-17-2009.aspx

Alternatively alternatively, you can figure out what the HTTP SOAP request needs to look like, and form it yourself within the HttpWebRequest.