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System.Runtime.Remoting.Messaging Namespace

The System.Runtime.Remoting.Messaging namespace contains classes used to create and transmit messages. The remoting infrastructure uses messages to communicate with remote objects. Messages are used to transmit remote method calls, to activate remote objects, and to communicate information. A message object carries a set of named properties, including action identifiers, envoy information, and parameters. Some of the most important classes of the System.Runtime.Remoting.Messaging namespace are the AsyncResult class, the RemotingSurrogateSelector class, and the ReturnMessage class.

The AsyncResult class stores and returns the results of an asynchronous method call. AsyncResult instances contain the return value, call status, the delegate used for the call, and the other information about the asynchronous method call.

The RemotingSurrogateSelector class can be used to control serialization of objects that extend MarshalByRefObject. A RemotingSurrogateSelector selects the surrogate used in serialization and deserialization of such objects. A surrogate is an object that can control serialization or deserialization of an object.

The ReturnMessage class holds information returned after a remote method call. A ReturnMessage holds the return value and any out or ref parameters that resulted from the remote method call.

  ClassDescription
Public classAsyncResultEncapsulates the results of an asynchronous operation on a delegate.
Public classCallContextProvides a set of properties that are carried with the execution code path. This class cannot be inherited.
Public classConstructionCallInfrastructure. Implements the IConstructionCallMessage interface to create a request message that constitutes a constructor call on a remote object.
Public classConstructionResponseInfrastructure. Implements the IConstructionReturnMessage interface to create a message that responds to a call to instantiate a remote object.
Public classHeaderDefines the out-of-band data for a call.
Public classInternalMessageWrapperInfrastructure. Wraps remoting data for passing between message sinks, either for requests from client to server or for the subsequent responses.
Public classLogicalCallContextProvides a set of properties that are carried with the execution code path during remote method calls.
Public classMethodCallInfrastructure. Implements the IMethodCallMessage interface to create a request message that acts as a method call on a remote object.
Public classMethodCallMessageWrapperInfrastructure. Implements the IMethodCallMessage interface to create a request message that acts as a method call on a remote object.
Public classMethodResponseInfrastructure. Implements the IMethodReturnMessage interface to create a message that acts as a method response on a remote object.
Public classMethodReturnMessageWrapperInfrastructure. Implements the IMethodReturnMessage interface to create a message that acts as a response to a method call on a remote object.
Public classOneWayAttributeMarks a method as one way, without a return value and out or ref parameters.
Public classRemotingSurrogateSelectorSelects the remoting surrogate that can be used to serialize an object that derives from a MarshalByRefObject.
Public classReturnMessageHolds a message returned in response to a method call on a remote object.

  InterfaceDescription
Public interfaceILogicalThreadAffinativeMarks an object that can propagate outside of an AppDomain in a LogicalCallContext.
Public interfaceIMessageContains communication data sent between cooperating message sinks.
Public interfaceIMessageCtrlProvides a way to control asynchronous messages after they have dispatched using the IMessageSink.AsyncProcessMessage.
Public interfaceIMessageSinkDefines the interface for a message sink.
Public interfaceIMethodCallMessageDefines the method call message interface.
Public interfaceIMethodMessageDefines the method message interface.
Public interfaceIMethodReturnMessageDefines the method call return message interface.
Public interfaceIRemotingFormatterProvides the remote procedure call (RPC) interface for all formatters.

  DelegateDescription
Public delegateHeaderHandlerRepresents the method that will handle processing of headers on the stream during deserialization.
Public delegateMessageSurrogateFilterDetermines whether the RemotingSurrogateSelector class should ignore a particular IMessage property while creating an ObjRef for a MarshalByRefObject class.

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