至于对Dispatch的消息检查，则可以通过IServiceBehavior，IEndpointBehavior或 IContractBehavior中DispatchRuntime的MessageInspectors添加；而对Client的消息检查则可以通过 IEndpointBehavior或IContractBehavior中ClientRuntime的MessageInspectors添加（注意，此时与IServiceBehavior无关，因为它不会作用于客户端代理）。例如：
public class PrintMessageInspectorBehavior : IDispatchMessageInspector,IEndpointBehavior
{
//略去IDispatchMessageInspector接口成员的实现;
#region IEndpointBehavior Members
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
//empty;
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
clientRuntime.MessageInspectors.Add(this);
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(this);
}
public void Validate(ServiceEndpoint endpoint)
{
//empty;
}
#endregion
}
{
//略去IDispatchMessageInspector接口成员的实现;
#region IEndpointBehavior Members
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
//empty;
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
clientRuntime.MessageInspectors.Add(this);
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(this);
}
public void Validate(ServiceEndpoint endpoint)
{
//empty;
}
#endregion
}
如果实现的是IServiceBehavior接口，则需要遍历ApplyDispatchBehavior()方法中的ServiceHostBase对象：
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
foreach (ChannelDispatcher channelDispatcher in serviceHostBase.ChannelDispatchers)
{
foreach (EndpointDispatcher endpointDispatcher in channelDispatcher .Endpoints)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(this);
}
}
}
{
foreach (ChannelDispatcher channelDispatcher in serviceHostBase.ChannelDispatchers)
{
foreach (EndpointDispatcher endpointDispatcher in channelDispatcher .Endpoints)
{
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(this);
}
}
}
注：IDispatchMessageInspector 接口的方法为BeforeSendReply()和AfterReceiveRequest()；而IClientMessageInspector接口 的方法则为BeforeSendRequest()和AfterReceiveReply()。
