BaseChannelSinkWithProperties Class
Provides a base implementation for channel sinks that want to expose a dictionary interface to their properties.
For a list of all members of this type, see BaseChannelSinkWithProperties Members.
System.Object
System.Runtime.Remoting.Channels.BaseChannelObjectWithProperties
System.Runtime.Remoting.Channels.BaseChannelSinkWithProperties
[Visual Basic] MustInherit Public Class BaseChannelSinkWithProperties Inherits BaseChannelObjectWithProperties [C#] public abstract class BaseChannelSinkWithProperties : BaseChannelObjectWithProperties [C++] public __gc __abstract class BaseChannelSinkWithProperties : public BaseChannelObjectWithProperties [JScript] public abstract class BaseChannelSinkWithProperties extends BaseChannelObjectWithProperties
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
Channel sinks provide a plug-in point that allows access to the underlying messages flowing through the channel as well as the stream used by the transport mechanism to send messages to a remote object. Channel sinks are linked together in a chain of channel sink providers, and all channel messages flow through this chain of sinks before the message is serialized and transported.
Note This class makes a link demand and an inheritance demand at the class level. A SecurityException is thrown when either the immediate caller or the derived class does not have infrastructure permission. For details about security demands, see Link Demands and Inheritance Demands.
Notes to Inheritors: When you inherit from BaseChannelSinkWithProperties, you must implement the Keys property and the Item property.
Example
[Visual Basic] Friend Class MyClientFormatterChannelSink Inherits BaseChannelSinkWithProperties Implements IClientChannelSink, IMessageSink Private nextClientSink As IClientChannelSink = Nothing Private nextMessageSink As IMessageSink = Nothing Public Sub New(nextSink As IClientChannelSink, nextMsgSink As IMessageSink) MyBase.New() nextClientSink = nextSink nextMessageSink = nextMsgSink End Sub 'New Public Sub ProcessMessage(msg As IMessage, requestHeaders As ITransportHeaders, _ requestStream As Stream, ByRef responseHeaders As ITransportHeaders, _ ByRef responseStream As Stream) _ Implements IClientChannelSink.ProcessMessage nextClientSink.ProcessMessage(msg, requestHeaders, requestStream, _ responseHeaders, responseStream) End Sub 'ProcessMessage Public Sub AsyncProcessRequest(sinkStack As IClientChannelSinkStack, _ msg As IMessage, headers As ITransportHeaders, myStream As Stream) _ Implements IClientChannelSink.AsyncProcessRequest sinkStack.Push(Me, Nothing) nextClientSink.AsyncProcessRequest(sinkStack, msg, headers, myStream) End Sub 'AsyncProcessRequest Public Sub AsyncProcessResponse(sinkStack As IClientResponseChannelSinkStack, _ state As Object, headers As ITransportHeaders, myStream As Stream) _ Implements IClientChannelSink.AsyncProcessResponse sinkStack.AsyncProcessResponse(headers, myStream) End Sub 'AsyncProcessResponse Public Function GetRequestStream(msg As IMessage, headers As ITransportHeaders) As Stream _ Implements IClientChannelSink.GetRequestStream Return Nothing End Function 'GetRequestStream Public ReadOnly Property NextChannelSink() As IClientChannelSink _ Implements IClientChannelSink.NextChannelSink Get Return nextClientSink End Get End Property Public ReadOnly Property NextSink() As IMessageSink _ Implements IMessageSink.NextSink Get Return nextMessageSink End Get End Property Public Overrides ReadOnly Property Properties() As Collections.IDictionary _ Implements IClientChannelSink.Properties Get End Get End Property Public Function AsyncProcessMessage(msg As IMessage, replySink As IMessageSink) As IMessageCtrl _ Implements IMessageSink.AsyncProcessMessage Return Nothing End Function 'AsyncProcessMessage Public Function SyncProcessMessage(msg As IMessage) As IMessage _ Implements IMessageSink.SyncProcessMessage Return nextMessageSink.SyncProcessMessage(msg) End Function 'SyncProcessMessage Default Public Overrides Property Item(key As Object) As Object Get If key Is GetType(MyKey) Then Return Me End If Return Nothing End Get Set Throw New NotSupportedException() End Set End Property Public Overrides ReadOnly Property Keys() As ICollection Get Dim myKeys As New ArrayList(0) myKeys.Add(GetType(MyKey)) Return myKeys End Get End Property End Class 'MyClientFormatterChannelSink Public Class MyKey End Class 'MyKey [C#] internal class MyClientFormatterChannelSink : BaseChannelSinkWithProperties, IClientChannelSink, IMessageSink { private IClientChannelSink nextClientSink=null; private IMessageSink nextMessageSink = null; public MyClientFormatterChannelSink(IClientChannelSink nextSink, IMessageSink nextMsgSink) : base() { nextClientSink = nextSink; nextMessageSink = nextMsgSink; } public void ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, out ITransportHeaders responseHeaders, out Stream responseStream) { nextClientSink.ProcessMessage(msg, requestHeaders, requestStream, out responseHeaders, out responseStream); } public void AsyncProcessRequest(IClientChannelSinkStack sinkStack, IMessage msg, ITransportHeaders headers, Stream myStream) { sinkStack.Push(this, null); nextClientSink.AsyncProcessRequest(sinkStack,msg,headers,myStream); } public void AsyncProcessResponse(IClientResponseChannelSinkStack sinkStack, Object state, ITransportHeaders headers, Stream myStream) { sinkStack.AsyncProcessResponse(headers, myStream); } public Stream GetRequestStream(IMessage msg,ITransportHeaders headers) { return null; } public IClientChannelSink NextChannelSink { get { return nextClientSink; } } public IMessageSink NextSink { get { return nextMessageSink; } } public IMessageCtrl AsyncProcessMessage(IMessage msg, IMessageSink replySink) { return null; } public IMessage SyncProcessMessage(IMessage msg) { return nextMessageSink.SyncProcessMessage(msg); } public override Object this[Object key] { get { if (key == typeof(MyKey)) return this; return null; } set { throw new NotSupportedException(); } } public override ICollection Keys { get { ArrayList myKeys = new ArrayList(1); myKeys.Add(typeof(MyKey)); return myKeys; } } } public class MyKey { } [C++] private __gc class MyClientFormatterChannelSink : public BaseChannelSinkWithProperties, public IClientChannelSink, public IMessageSink { private: IClientChannelSink* nextClientSink; IMessageSink* nextMessageSink; public: MyClientFormatterChannelSink() : nextClientSink(0), nextMessageSink(0) {} MyClientFormatterChannelSink(IClientChannelSink* nextSink, IMessageSink* nextMsgSink) : BaseChannelSinkWithProperties() { nextClientSink = nextSink; nextMessageSink = nextMsgSink; } void ProcessMessage(IMessage* msg, ITransportHeaders* requestHeaders, Stream* requestStream, [Out]ITransportHeaders** responseHeaders, [Out]Stream** responseStream) { nextClientSink->ProcessMessage(msg, requestHeaders, requestStream, responseHeaders, responseStream); } void AsyncProcessRequest(IClientChannelSinkStack* sinkStack, IMessage* msg, ITransportHeaders* headers, Stream* myStream) { sinkStack->Push(this, 0); nextClientSink->AsyncProcessRequest(sinkStack,msg,headers,myStream); } void AsyncProcessResponse(IClientResponseChannelSinkStack* sinkStack, Object* state, ITransportHeaders* headers, Stream* myStream) { sinkStack->AsyncProcessResponse(headers, myStream); } Stream* GetRequestStream(IMessage* msg,ITransportHeaders* headers) { return 0; } __property IClientChannelSink* get_NextChannelSink() { return nextClientSink; } __property IMessageSink* get_NextSink() { return nextMessageSink; } IMessageCtrl* AsyncProcessMessage(IMessage* msg, IMessageSink* replySink) { return 0; } IMessage* SyncProcessMessage(IMessage* msg) { return nextMessageSink->SyncProcessMessage(msg); } __property Object* get_Item( Object* key ) { if (key == __typeof(MyKey)) return this; return 0; } __property void set_Item( Object* value, Object* key ) { throw new NotSupportedException(); } __property ICollection* get_Keys() { ArrayList* myKeys = new ArrayList(1); myKeys->Add(__typeof(MyKey)); return myKeys; } }; public __gc class MyClientFormatterProvider : public IClientChannelSinkProvider { private: IClientChannelSinkProvider* nextProvider; public: MyClientFormatterProvider() : nextProvider(0) { } IClientChannelSink* CreateSink(IChannelSender* channel, String* myUrl, Object* remoteChannelData) { IClientChannelSink* nextSink = 0; IMessageSink* nextMsgSink = 0; if (nextProvider!=0) { Console::WriteLine(S"Next client sink provider is: {0}", nextProvider); // Create a sink chain calling the next sink provider's // 'CreateSink' method. nextSink=nextProvider->CreateSink(channel,myUrl,remoteChannelData); nextMsgSink=dynamic_cast<IMessageSink*>(nextSink); } return new MyClientFormatterChannelSink(nextSink,nextMsgSink); } __property IClientChannelSinkProvider* get_Next() { return nextProvider; } __property void set_Next( IClientChannelSinkProvider* value ) { nextProvider = value; } };
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Requirements
Namespace: System.Runtime.Remoting.Channels
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: Mscorlib (in Mscorlib.dll)
.NET Framework Security:
- SecurityPermission for operating with infrastructure code. Demand value: SecurityAction.LinkDemand; Permission Value: SecurityPermissionFlag.Infrastructure
- SecurityPermission for operating with infrastructure code. Demand value: SecurityAction.InheritanceDemand; Permission Value: SecurityPermissionFlag.Infrastructure
See Also
BaseChannelSinkWithProperties Members | System.Runtime.Remoting.Channels Namespace