Question

I have two WCF services hosted with a hosting provider. Both service to work fine. I can access them from my own computer or even from a website hosted with another provider. The weird part (at least, the part I don’t understand) is; one cannot call the other.

Both services are located in a subfolder of the web root, at the same hierarchical level. Like wwwroot\serviceone and wwwroot\servicetwo. Both are marked as application folder in IIS en both have an almost similar web.config as shown below, only the names differ:

<configuration>
     <system.web>
        <compilation targetFramework="4.0" />
      </system.web>
      <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="servone">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <services>
      <service name="MyService.ServiceOne" behaviorConfiguration="servone">
        <endpoint address="" binding="basicHttpBinding" contract=" MyService.IServiceOne "/>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>

  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

Browsing to the .svc displays the well-known service page with the example code;

class Test
{
    static void Main()
    {
        ServiceOne client = new ServiceOne ();
        // Use the 'client' variable to call operations on the service.
        // Always close the client.
        client.Close();
    }
}

The client has a method named HandleRequest(string str). So in my code (C#) there’s a line like;

client.HandleRequest("blah");

The call doesn’t raise an exception (I can tell because they are catched, handled and written to a database). It’s like the message is sent but never returns.
When I run this service (who calls the other) locally and leave the second on the remote server, all works well.

Obvious it is hard to provide all the details from the hosting party. Unfortunate I don’t have access to an IIS installation to simulate the environment either. So, I’m not expecting an in-depth technical solution based on the little information I can provide. But any comment about how this setup differs from all others might be helpful.

I really appreciate any effort, thanks.

---

Edit:

The call is made like this:

public bool Send(String str)
{
  bool result = false;
  BasicHttpBinding binding = new BasicHttpBinding();
  EndpointAddress ep = new EndpointAddress("http://www.mydomain.com/ServiceTwo.svc");
  client = new ServiceTwoClient(b, ep);
  //
  try
  {
    result = client.HandleRequest(str);
    client.Close();
    return result;
  }
  catch (Exception x)
  {
    Add2DbLog(x.Message);
    return false;
  }
}

Answer 1

The domain alias you’re using may not work locally on the server. Log in to that server, launch a web browser, and navigate to the service URL used in your code (http://www.mydomain.com/ServiceTwo.svc). Ensure that you don’t get any error messages.