What happens when aspx page is requested from browser ?, DOT NET Programming

Assignment Help:

The steps that occur when we request a ASPX page are as follows:-

1) The browser sends the request to the webserver. Now  assume that the webserver at the other end is IIS.

2) Once the IIS receives the request he looks on which engine the request is served. Whenever I mean engine that means the DLL who can parse this page or compile and send a response back to the browser. Which request is to map is decided by the file extension of the page requested.

Depending on the file extension some mapping are as follows:

1) .aspx, for the ASP.NET Web pages,

2).asmx, for the ASP.NET Web services,

3).config, for the ASP.NET configuration files,

4).ashx, for the custom ASP.NET HTTP handlers

5).rem, for remoting the resources

6)Etc

You also can configure the extension mapping to which engine can route by using the IIS engine.

1833_ASPX page.png

For example an ASP page will be sent to the old classic ASP.DLL to compile. While the .ASPX pages will be routed to the ASP.NET engine for compilation.

7) We will see how an ASP.NET page that is ASPX pages generation sequence occurs. Once IIS passes the Request to the ASP.NET engine page has to go through two section HTTP module section and HTTP handler section. Both of this section has their own work to be completed in order that the page is properly compiled and sent to the IIS. The HTTP modules inspect the incoming request and depending on that they can change their internal workflow of the request. The HTTP handler actually compiles the page and generates the output. If you see your machine.config file you will see the following section of HTTP modules.

d name="OutputCache" type="System.Web.Caching.OutputCacheModule" />

d name="Session" type="System.Web.SessionState.SessionStateModule" />

d name="WindowsAuthentication" type="System.Web.Security.WindowsAuthenticationModule" />

d name="PassportAuthentication" type="System.Web.Security.PassportAuthenticationModule" />

d name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule" />

d name="FileAuthorization" type="System.Web.Security.FileAuthorizationModule" />

d name="ErrorHandlerModule" type="System.Web.Mobile.ErrorHandlerModule, System.Web.Mobile, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /

> 

The mapping above will show which functionality is to be handled by which Namespace. For e.g. FormsAthuentication is handled by "System.Web. Security.FormsAuthenticationModule". If you see at the web.config section HTTP module is where the authentication and authorization happens.

d verb="*" path="*.vjsproj" type="System.Web.HttpForbiddenHandler" />

d verb="*" path="*.java" type="System.Web.HttpForbiddenHandler" />

d verb="*" path="*.jsl" type="System.Web.HttpForbiddenHandler" />

d verb="*" path="trace.axd" type="System.Web.Handlers.TraceHandler" />

d verb="*" path="*.aspx" type="System.Web.UI.PageHandlerFactory" />

d verb="*" path="*.ashx" type="System.Web.UI.SimpleHandlerFactory" />

...

Depending on the File extension handler it decides which Namespace will generate the output. e.g.  All .ASPX extension files will be compiled by the System.Web.UI.PageHandlerFactory

Once the file is done it will be send back again to the HTTP modules and from there to IIS and then to the browser.

 698_IIS flow.png

 Figure:-IIS flow from various sections.


Related Discussions:- What happens when aspx page is requested from browser ?

Daemon threads, What are Daemon threads? Daemon thread's run in the bac...

What are Daemon threads? Daemon thread's run in the background and stop automatically when nothing is running program. The Example of a Daemon thread is the "Garbage collector"

Looking for web designer, Looking for web designer Project Description: ...

Looking for web designer Project Description: I am seeking website designer with developing skills of Html, .Net and also supports in all browsers. Please ping your previous

Need report generation in sql and .net, Need Report Generation in SQL / .NE...

Need Report Generation in SQL / .NET Project Description: Prepare a report generation web page by pulling information from an SQL Database. Filter parameters per report :

Dispose method in .net, What is Dispose method in .NET? The .NET provid...

What is Dispose method in .NET? The .NET provides "Finalize" method in which we can clean up our resources. But relying on this is not always better so the best is to implement

Types of validation controls in asp.net, How many types of validation contr...

How many types of validation controls are provided by ASP.NET   The six main types of validation controls are as follows:- 1) Required Field Validator: This validator che

Give a brief introduction on side-by-side execution, Give a brief introduct...

Give a brief introduction on side-by-side execution. Can two applications, one using private assembly and the other using the shared assembly be stated as side-by-side executables?

Explain repeater control, How can you provide an alternating color scheme i...

How can you provide an alternating color scheme in a Repeater control?  AlternatingItemTemplate Like the ItemTemplate element, but rendered for each other row (alternating item

Difference in stored procedure and user defined function, What is the diffe...

What is the difference between Stored Procedure (SP) and User Defined Function (UDF)? Some of major differences between a stored procedure and user defined are as follows:-

Connect my marketplace website with stripe/connect, Project Description: ...

Project Description: I am trying to connect my marketplace website with Stripe/connect. I have 5 or 6 scripts already written that just need to be adjusted so they will work: 2

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd