[Programming WCF Services]Chapter 1. WCF Essentials - Metadata Exchange

1.HTTP-GET WCF 方式

通过Http的方式提供metadata

1.1.配置文件方式

<system.serviceModel><services><service name = "MyService" behaviorConfiguration = "MEXGET"><host><baseAddresses><add baseAddress = "http://localhost:8000/"/></baseAddresses></host>...</service><service name = "MyOtherService" behaviorConfiguration = "MEXGET"><host><baseAddresses><add baseAddress = "http://localhost:8001/"/></baseAddresses></host>...</service></services><behaviors><serviceBehaviors><behavior name = "MEXGET"><serviceMetadata httpGetEnabled = "true"/></behavior></serviceBehaviors></behaviors>
</system.serviceModel>

 一般通过HTTP的基地址即可以访问元数据，也可以指定不同的地址：

<behavior name = "MEXGET"><serviceMetadata httpGetEnabled = "true" httpGetUrl = "MyMEXAddress"/>
</behavior>

 

 

1.2.代码方式

ServiceHost host = new ServiceHost(typeof(MyService));
ServiceMetadataBehavior metadataBehavior;
metadataBehavior = host.Description.Behaviors.Find<ServiceMetadataBehavior>();
if(metadataBehavior == null)
{
Debug.Assert(BaseAddresses.Any(baseAddress=>baseAddress.Uri.Scheme == "http"));
metadataBehavior = new ServiceMetadataBehavior();
metadataBehavior.HttpGetEnabled = true;
host.Description.Behaviors.Add(metadataBehavior);
}
host.Open();

 

 

2.Metadata Exchange Endpoint

平台无关的元数据交换方式，支持多种协议

<services><service name = "MyService" behaviorConfiguration = "MEX"><host><baseAddresses><add baseAddress = "net.tcp://localhost:8001/"/><add baseAddress = "net.pipe://localhost/"/></baseAddresses></host><endpointaddress = "MEX"binding = "mexTcpBinding"contract = "IMetadataExchange"
/><endpointaddress = "MEX"binding = "mexNamedPipeBinding"contract = "IMetadataExchange"
/><endpointaddress = "http://localhost:8000/MEX"binding = "mexHttpBinding"contract = "IMetadataExchange"
/>...</service>
</services>
<behaviors><serviceBehaviors><behavior name = "MEX"><serviceMetadata/></behavior></serviceBehaviors>
</behaviors>