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4. 

5. 
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public abstract class Message : IDisposable {
// numerous overloads for creating messages
public static Message CreateMessage(...);
// reads the body as XML
public XmlDictionaryReader GetReaderAtBodyContents();
// deserializes the body into a .NET object
public T GetBody<T>(XmlObjectSerializer serializer);
// numerous methods/overloads for writing messages
public void WriteMessage(XmlDictionaryWriter writer);
...
}

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7. 
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[DataContract]
public class Invoice {
[DataMember]
public string CustomerId;
[DataMember]
private DateTime InvoiceDate;
public string SomePrivateData;
...
}

8. 
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[ServiceContract]
public interface IInvoiceService {
[OperationContract(IsOneWay=true)]
void SubmitInvoice(Invoice invoice);
[OperationContract]
InvoiceStatus GetStatus(Invoice invoice);
void CancelInvoice(Invoice invoice);
}

9. 

[ServiceBehavior(
InstanceContextMode=InstanceContextMode.Single,
ConcurrencyMode=ConcurrencyMode.Multiple)]
public class InvoiceService : IInvoiceService
{
[OperationBehavior(
Impersonation=ImpersonationOption.Required)]
public void SubmitInvoice(Invoice invoice) {
... // implementation omitted
}
...
}

10. 

11. 
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12. class Program {
static void Main(string[] args) {
ServiceHost host =
new ServiceHost(typeof(InvoiceService));
... // configure the host before opening
try {
host.Open();
Console.ReadLine();
host.Close();
}
catch (Exception e) {
Console.WriteLine(e);
host.Abort();
}
}
}
<%@ ServiceHost Service="InvoiceService" %>

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<configuration>
<system.serviceModel>
<!-- this is where you configure your WCF applications -->
</system.serviceModel>
</configuration>

15. 
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...
host.AddServiceEndpoint(
typeof(IInvoiceService),
new BasicHttpBinding(),
"http://server/invoiceservice");
host.AddServiceEndpoint(
typeof(IInvoiceService),
new NetTcpBinding(),
"net.tcp://server:8081/invoiceservice");
host.Open();
...

16. <configuration>
<system.serviceModel>
<services>
<service name="InvoiceService">
<endpoint address="http://server/invoiceservice"
binding="basicHttpBinding"
contract="IInvoiceService"/>
<endpoint address="net.tcp://server:8081/invoiceservice"
binding="netTcpBinding"
contract="IInvoiceService"/>
</service>
</services>
</system.serviceModel>
</configuration>

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19. 

20. 
BasicHttpBinding b = new BasicHttpBinding();
b.Security.Mode = BasicHttpSecurityMode.Transport;
b.Security.Transport.ClientCredentialType =
HttpClientCredentialType.Basic;
host.AddServiceEndpoint(
typeof(IInvoiceService), b,
"http://server/invoiceservice");
...

21. <configuration>
<system.serviceModel>
<services>
<service name="InvoiceService">
<endpoint
address="https://server/invoiceservice"
binding="basicHttpBinding"
bindingConfiguration="MyBindingConfiguration"
contract="IInvoiceService"/>
...
</service>
</services>
<bindings>
<basicHttpBinding>
<binding name="MyBindingConfiguration">
<security mode="Transport">
<transport clientCredentialType="Basic" />
</security>
</binding>
</basicHttpBinding>
</bindings>
</system.serviceModel>
</configuration>

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...
ServiceHost host =
new ServiceHost(typeof(InvoiceService));
ServiceMetadataBehavior smb =
new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
host.Description.Behaviors.Add(smb);
host.Open();
...

24. <configuration>
<system.serviceModel>
<services>
<service name="InvoiceService"
behaviorConfiguration="MetadataBehavior">
...
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="MetadataBehavior">
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>

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<configuration>
<system.serviceModel>
<services>
<service name="InvoiceService"
behaviorConfiguration="MetadataBehavior">
<endpoint
address="net.tcp://server:80801/invoiceservice/mex"
binding="mexTcpBinding"
contract="IMetadataExchange"/>
...

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<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<s:Fault>
<faultcode xmlns:a="..." xmlns="">a:InternalServiceFault</faultcode>
<faultstring xml:lang="en-US" xmlns="">The server was unable to process the request
due to an internal error...</faultstring>
</s:Fault>
</s:Body>
</s:Envelope>

27. 
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<configuration>
<system.serviceModel>
<behaviors>
<behavior name="Default">
<serviceDebug includeExceptionDetailInFaults="true" />
</behaviors>
</behaviors>
</system.serviceModel>
</configuration>

28. 
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...
public void DoSomething(string input) {
...
throw new FaultException("Something bad happened");
}

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