MessageProcessingHandler Class

MessageProcessingHandler Class

.NET Framework (current version)

A base type for handlers which only do some small processing of request and/or response messages.

Namespace:   System.Net.Http
Assembly:  System.Net.Http (in System.Net.Http.dll)


public abstract class MessageProcessingHandler : DelegatingHandler


Creates an instance of a MessageProcessingHandler class.


Creates an instance of a MessageProcessingHandler class with a specific inner handler.


Gets or sets the inner handler which processes the HTTP response messages.(Inherited from DelegatingHandler.)


Releases the unmanaged resources and disposes of the managed resources used by the HttpMessageHandler.(Inherited from HttpMessageHandler.)


Releases the unmanaged resources used by the DelegatingHandler, and optionally disposes of the managed resources.(Inherited from DelegatingHandler.)


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_protmethodProcessRequest(HttpRequestMessage, CancellationToken)

Performs processing on each request sent to the server.

System_CAPS_protmethodProcessResponse(HttpResponseMessage, CancellationToken)

Perform processing on each response from the server.

System_CAPS_protmethodSendAsync(HttpRequestMessage, CancellationToken)

Sends an HTTP request to the inner handler to send to the server as an asynchronous operation.(Overrides DelegatingHandler.SendAsync(HttpRequestMessage, CancellationToken).)


Returns a string that represents the current object.(Inherited from Object.)

The actual creation of response messages is delegated to an inner handler. The MessageProcessingHandler is useful if the handler doesn't require asynchronous operations, because operations on request and response messages are fast.

The most common usage is to derive from this class and override the ProcessRequest and ProcessResponse methods. 

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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