ASP. NET pipeline event with HttpModule, HttpHandler simple understanding

BeginRequest	Indicates that the request processing started
AuthenticateRequest	Encapsulating the request authentication process
AuthorizeRequest	Encapsulates the process of checking whether a previously cached output page can be used to process requests
Resolverequestcache	Get triggered from the cache at the appropriate time
AcquireRequestState	triggered when the initialization session is loaded
PreRequestHandlerExecute	Triggered before an HTTP request enters HttpHandler
PostRequestHandlerExecute	Triggered after an HTTP request enters HttpHandler
ReleaseRequestState	Triggers when the session state is stored
Updaterequestcache	Triggers when cache information is updated
EndRequest	triggered when HTTP request processing is complete
Presendrequesthenaders	Triggered before the header is sent to the client
Presendrequestconternt	Triggered before content is sent to the client

Name	Describe
BeginRequest	The BeginRequest event is triggered when the HTTP pipeline starts processing the request
Authenticaterequest,postauthenticaterequest	Asp. NET successively triggers these two events to enable the security module to authenticate the request
Authorizerequest,postauthorizerequest	Asp. NET triggers both events, enabling the security module to authorize the request process
Resolverequestcache,postresolverequestcache	Asp. NET has triggered both events so that the cache module leverages the cached direct process response to the request (the cache module can cache the response content process and, for subsequent requests, directly return the cached content, thereby improving responsiveness).
Postmaprequesthandler	For access to different resource types, ASP. NET has different HttpHandler for its process processing. For each request, ASP. NET chooses to match the corresponding HttpHandler type through the extension, and the implementation is triggered after a successful match
Acquirerequeststate,postacquirerequeststate	Asp. NET successively triggers these two events so that the state management module gets the corresponding state based on the current request, such as sessionstate
Prerequesthandlerexecute,postrequesthandlerexecute	Asp. NET finally through a request resource type corresponds to the HttpHandler implementation of the request processing, before and after the implementation of HttpHandler, these two implementations are triggered successively
Releaserequeststate,postreleaserequeststate	Asp. NET triggers both events so that the state Management module releases the corresponding state based on the current request
Updaterequestcache,postupdaterequestcache	Asp. NET has triggered both events so that the cache module saves the HttpHandler processing request to the output cache
Logrequest,postlogrequest	Asp. NET successively triggers both events for the current request process logging
EndRequest	The endrequest event is triggered when the entire request process is complete

Reference Original: http://blog.csdn.net/sundacheng1989/article/details/9995263

ASP. NET pipeline event with HttpModule, HttpHandler simple understanding