What are the difference between HTTP Handler and HTTP Module?
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HTTP handler Vs HTTP module :
Http Handlers:
Http handlers are developed by asp.net developers. It a component which is to implement System.Web.IHttpHandler interface. Handlers is act like ISAPI dlls the only Handlers can be called directly URL while ISAPI Dlls are not.
Process Request: a processing when asp.net requests in a method.
IsReusable: another request fulfill the same type of instance in HTTP Handler.
uses for custom HTTP handlers:
- To create an RSS feed for a Web site.
- When users send a request to your site that ASP.NET calls your handler to process the request.
- Image server
Http Modules:
Http modules are objects which also participate in the asp.net request pipeline but it does job after and before HTTP Handlers complete its work. it will associate a session and cache with asp.net request. It implements System.Web.IHttpModule interface.
uses for HTTP modules:
- Security
- Statistics and logging
- Custom headers