qpid/doc/book/src/WCF.xml

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<section>
  <title>
    WCF
  </title>
  <section role="h1" id="WCF-Introduction">
    <title>
      Introduction
    </title>

    <para>
      WCF (<emphasis>Windows Communication Foundation)</emphasis> unifies the .Net
      communication capabilities into a single, common, general Web
      service oriented framework. A good WCF tutorial can be found
      <ulink url="http://www.netfxharmonics.com/2008/11/Understanding-WCF-Services-in-Silverlight-2#WCFSilverlightIntroduction">here</ulink>.
    </para>
    <para>
      WCF separates how service logic is written from how services
      communicate with clients. Bindings are used to specify the
      transport, encoding, and protocol details required for clients
      and services to communicate with each other. Qpid provide a WCF
      binding: org.apache.qpid.wcf.model.QpidBinding. WCF Services that
      use the Qpid binding communicate through queues that are
      dynamically created on a Qpid broker.
    </para>
    <!--h1-->
  </section>
  <section role="h1" id="WCF-HowtouseQpidbinding">
    <title>
      How to use Qpid binding
    </title>

    <para>
      WCF services are implemented using:
    </para>
    <itemizedlist>
      <listitem>
	<para>A service contract with one or more operation contracts.
        </para>
      </listitem>
      <listitem>
	<para>A service implementation for those contracts.
        </para>
      </listitem>
      <listitem>
	<para>A configuration file to provide that implementation with an
          endpoint and a binding for that specific contract.
        </para>
      </listitem>
    </itemizedlist>
    <para>
      The following configuration file can be used to configure a Hello
      Service:
    </para>
    <programlisting>
&lt;configuration&gt;
  &lt;system.serviceModel&gt;   
     &lt;services&gt;
      &lt;!-- the service class --&gt; 
      &lt;service name="org.apache.qpid.wcf.demo.HelloService"&gt;
        &lt;host&gt;
          &lt;baseAddresses&gt;
            &lt;!-- Use SOAP over AMQP --&gt;
            &lt;add baseAddress="soap.amqp:///"   /&gt;
          &lt;/baseAddresses&gt;
        &lt;/host&gt;

        &lt;endpoint
          address="Hello"
          &lt;!-- We use a Qpid Binding, see below def --&gt;
          binding="customBinding"
          bindingConfiguration="QpidBinding"
          &lt;!-- The service contract --&gt;
          contract="org.apache.qpid.wcf.demo.IHelloContract"/&gt;
      &lt;/service&gt;
    &lt;/services&gt;

    &lt;bindings&gt;
      &lt;customBinding&gt;
        &lt;!-- cf def of the qpid binding --&gt; 
        &lt;binding name="QpidBinding"&gt;
          &lt;textMessageEncoding /&gt;
          &lt;!-- specify the host and port number of the broker --&gt; 
          &lt;QpidTransport            
               host="192.168.1.14"
               port="5673" /&gt;
        &lt;/binding&gt;
      &lt;/customBinding&gt;
    &lt;/bindings&gt;

    &lt;extensions&gt;
      &lt;bindingElementExtensions&gt;
        &lt;!-- use Qpid binding element: org.apache.qpid.wcf.model.QpidTransportElement --&gt; 
        &lt;add
          name="QpidTransport"
           type="org.apache.qpid.wcf.model.QpidTransportElement, qpidWCFModel"/&gt;
      &lt;/bindingElementExtensions&gt;
    &lt;/extensions&gt;

  &lt;/system.serviceModel&gt;
&lt;/configuration&gt;
    </programlisting>
    <para>
      Endpoints and bindings can also be set within the service code:
    </para>
    <programlisting>
/* set HostName, portNumber and MyService accordingly */           
Binding binding = new QpidBinding("HostName", portNumber); 
ServiceHost service = new ServiceHost(typeof(MyService), new Uri("soap.amqp:///"));
service.AddServiceEndpoint(typeof(IBooking), binding, "MyService");
service.Open();
....
    </programlisting>
    <!--h1-->
  </section>
</section>