How to invoke web service in client which has CustomBinding endpoints? - wcf

Question

I have WCF web service with custombinding as endpoint. I would like to invoke this web service (hosted on IIS) from my client application.
The service contract looks as below:
[ServiceContract(Namespace = "http://schemas.microsoft.com/windows/management/2012/01/enrollment")]
[XmlSerializerFormat]
public interface IDiscoveryService
{
[OperationContract(Name = "Get")]
[WebInvoke(Method = "GET", BodyStyle = WebMessageBodyStyle.Bare, RequestFormat=WebMessageFormat.Xml, ResponseFormat=WebMessageFormat.Xml)]
string DiscoveryGet();
}
The Web.COnfig file contents looks like:
<system.serviceModel>
<bindings>
<customBinding>
<binding name="NewBinding0">
<textMessageEncoding />
<httpTransport />
</binding>
</customBinding>
</bindings>
<services>
<service name="DiscoveryWebService.DiscoveryService">
<endpoint address="" binding="customBinding" bindingConfiguration="NewBinding0"
contract="DiscoveryWebService.IDiscoveryService" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the value below to false before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
The client application codes looks like:
string uri = " http://localhost/EnrollmentServer/Discovery.svc";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
req.ContentType = "unknown";
req.Method = "GET";
WebResponse response = req.GetResponse();
StreamReader loResponseStream = new StreamReader(response.GetResponseStream(), false);
string responseString = loResponseStream.ReadToEnd();
I am getting HTML content of WSDL file instead of the string returned by Get method. I am not getting whether I am doing it in the right way or not?
I would appreciate the help in this regard.

Answer 1

The [WebGet] (and [WebInvoke]) attribute is only honored for an endpoint which uses the webMessageEncoding binding element; with a HTTP transport with the manualAddressing property set to true, and also the <webHttp/> endpoint behavior - which your service doesn't have. If you make the changes listed below, it should work:
Service contract:
[ServiceContract(Namespace = "http://schemas.microsoft.com/windows/management/2012/01/enrollment")]
[XmlSerializerFormat]
public interface IDiscoveryService
{
[WebGet(BodyStyle = WebMessageBodyStyle.Bare, RequestFormat = WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Xml)]
string DiscoveryGet();
}
Web.config:
<system.serviceModel>
<bindings>
<customBinding>
<binding name="NewBinding0">
<webMessageEncoding />
<httpTransport manualAddressing="true" />
</binding>
</customBinding>
</bindings>
<services>
<service name="DiscoveryWebService.DiscoveryService">
<endpoint address="" binding="customBinding" bindingConfiguration="NewBinding0"
contract="DiscoveryWebService.IDiscoveryService" behaviorConfiguration="Web" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="Web">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
Client code:
string uri = "http://localhost/EnrollmentServer/Discovery.svc/DiscoveryGet";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
req.Method = "GET";
WebResponse response = req.GetResponse();
StreamReader loResponseStream = new StreamReader(response.GetResponseStream(), false);
string responseString = loResponseStream.ReadToEnd();