public class MyMessageSink : IMessageSink { private IMessageSink nextSink; public MyMessageSink(IMessageSink nextSink) { this.nextSink = nextSink; } public IMessage SyncProcessMessage(IMessage msg) { Console.WriteLine("Received message: " + msg.Properties["__MethodName"]); return nextSink.SyncProcessMessage(msg); } public IMessageCtrl AsyncProcessMessage(IMessage msg, IMessageSink replySink) { Console.WriteLine("Received message: " + msg.Properties["__MethodName"]); return nextSink.AsyncProcessMessage(msg, replySink); } public IMessageSink NextSink { get { return nextSink; } } }
public class JsonSerializationMessageSink : IMessageSink { private IMessageSink nextSink; public JsonSerializationMessageSink(IMessageSink nextSink) { this.nextSink = nextSink; } public IMessage SyncProcessMessage(IMessage msg) { if (msg.Properties.Contains("CustomSerialize")) { object data = msg.Properties["CustomSerialize"]; string json = JsonConvert.SerializeObject(data); msg.Properties.Add("SerializedData", json); } return nextSink.SyncProcessMessage(msg); } public IMessageCtrl AsyncProcessMessage(IMessage msg, IMessageSink replySink) { if (msg.Properties.Contains("CustomSerialize")) { object data = msg.Properties["CustomSerialize"]; string json = JsonConvert.SerializeObject(data); msg.Properties.Add("SerializedData", json); } return nextSink.AsyncProcessMessage(msg, replySink); } public IMessageSink NextSink { get { return nextSink; } } }In conclusion, IMessageSink is an interface in .NET that provides a way for developers to intercept and handle messages from different sources. Developers can use this interface for a variety of purposes, from logging remote calls to implementing custom serialization. The IMessageSink interface belongs to the System.Runtime.Remoting.Messaging namespace, which is part of the .NET Framework.