IDispatchMessageInspector.AfterReceiveRequest Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Called after an inbound message has been received but before the message is dispatched to the intended operation.
public:
System::Object ^ AfterReceiveRequest(System::ServiceModel::Channels::Message ^ % request, System::ServiceModel::IClientChannel ^ channel, System::ServiceModel::InstanceContext ^ instanceContext);public object AfterReceiveRequest (ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext);abstract member AfterReceiveRequest : Message * System.ServiceModel.IClientChannel * System.ServiceModel.InstanceContext -> objPublic Function AfterReceiveRequest (ByRef request As Message, channel As IClientChannel, instanceContext As InstanceContext) As ObjectParameters
- request
- Message
The request message.
- channel
- IClientChannel
The incoming channel.
- instanceContext
- InstanceContext
The current service instance.
Returns
The object used to correlate state. This object is passed back in the BeforeSendReply(Message, Object) method.
Examples
The following code example shows a basic IDispatchMessageInspector that writes a string to the console when it is invoked.
#region IDispatchMessageInspector Members
public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel, InstanceContext instanceContext)
{
Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.");
return null;
}
public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
{
Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.");
}
#endregion
#Region "IDispatchMessageInspector Members"
Public Function AfterReceiveRequest(ByRef request As System.ServiceModel.Channels.Message, _
ByVal channel As IClientChannel, ByVal instanceContext As InstanceContext) _
As Object Implements IDispatchMessageInspector.AfterReceiveRequest
Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.")
Return Nothing
End Function
Public Sub BeforeSendReply(ByRef reply As System.ServiceModel.Channels.Message, ByVal correlationState As Object) _
Implements IDispatchMessageInspector.BeforeSendReply
Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.")
End Sub
#End Region
The following code example shows the implementation of an IServiceBehavior that adds the Inspector IDispatchMessageInspector to the DispatchRuntime.MessageInspectors collection.
#region IServiceBehavior Members
public void AddBindingParameters(
ServiceDescription serviceDescription,
ServiceHostBase serviceHostBase,
System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints,
BindingParameterCollection bindingParameters
)
{ return; }
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
foreach (ChannelDispatcher chDisp in serviceHostBase.ChannelDispatchers)
{
foreach (EndpointDispatcher epDisp in chDisp.Endpoints)
{
epDisp.DispatchRuntime.MessageInspectors.Add(new Inspector());
foreach (DispatchOperation op in epDisp.DispatchRuntime.Operations)
op.ParameterInspectors.Add(new Inspector());
}
}
}
#Region "IServiceBehavior Members"
Public Sub AddBindingParameters(ByVal serviceDescription As ServiceDescription, _
ByVal serviceHostBase As ServiceHostBase, ByVal endpoints As _
System.Collections.ObjectModel.Collection(Of ServiceEndpoint), _
ByVal bindingParameters As BindingParameterCollection) Implements IServiceBehavior.AddBindingParameters
Return
End Sub
Public Sub ApplyDispatchBehavior(ByVal serviceDescription As ServiceDescription, _
ByVal serviceHostBase As ServiceHostBase) Implements _
IServiceBehavior.ApplyDispatchBehavior
For Each chDisp As ChannelDispatcher In serviceHostBase.ChannelDispatchers
For Each epDisp As EndpointDispatcher In chDisp.Endpoints
epDisp.DispatchRuntime.MessageInspectors.Add(New Inspector())
For Each op As DispatchOperation In epDisp.DispatchRuntime.Operations
op.ParameterInspectors.Add(New Inspector())
Next op
Next epDisp
Next chDisp
End Sub
The following code example shows the use of an application configuration file to load the service behavior that inserts the Inspector IDispatchMessageInspector.
<configuration>
<system.serviceModel>
<services>
<service
name="Microsoft.WCF.Documentation.SampleService"
behaviorConfiguration="metadataSupport">
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/SampleService" />
</baseAddresses>
</host>
<endpoint
address=""
binding="wsHttpBinding"
contract="Microsoft.WCF.Documentation.ISampleService"
/>
<endpoint
address="mex"
binding="mexHttpBinding"
contract="IMetadataExchange"
/>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="metadataSupport">
<serviceMetadata httpGetEnabled="true" httpGetUrl=""/>
<serviceInterceptors />
</behavior>
</serviceBehaviors>
</behaviors>
<extensions>
<behaviorExtensions>
<add
name="serviceInterceptors"
type="Microsoft.WCF.Documentation.InspectorInserter, HostApplication, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"
/>
</behaviorExtensions>
</extensions>
</system.serviceModel>
</configuration>
Remarks
Use the AfterReceiveRequest method to inspect or modify the incoming message, the client channel that provided it, and the current service instance. The return value can be any object that you want to use for correlation purposes; it is returned to you as the correlationState parameter in the BeforeSendReply method.
Important
You cannot use the body of the message unless you buffer the entire message and make a copy. If you do this, you must make two copies of the message: one to inspect, and the other to overwrite the request parameter.
