ARCHITECTURE OF ASP NET

ARCHITECTURE OF ASP NET - Transcript

ARCHITECTURE OF ASP NET
Web Server
HTTP REQUEST

ASP net Runtime Env

aspx asp

Aspnet isapi dll Asp dll

Machine config

Web config

App Domain HTTP RESPONSE
HTTP Handlers

Process Req

inet info exe

Aspnet wp exe

Inet info exe identifies the request and submits the request to the aspnet isapi dll Aspnet isapi dll is a script engine which process the aspx page Then the script engine will submit the request to the ASP NET runtime env After verifying all the security issues of both machine config and web config then an AppDomain will be defined for the request and after processing the request the response will be given to the client as HTTP response Machine Config it is used to maintain the complete configuration details of all the web applications registered on to the web server of ASP net Web Config It is used to maintain the config details about a single web application Where configuration details includes security database connectivity state management trace details of the web application authentication and authorization of the applications and globalizations

AppDomain All windows appns run inside a process and these process own resources such as memory and kernel objects and the threads execute code loaded into a process Process are protected from each other by the OS All these appns are run on high isolation mode to work safely The disadvantage of this is memory resources are blocked So to achieve this in a single process all the applications should be made to run which is good to an extent but the draw back is if one crashes all other are effected So in net the code verification feature takes care that the code is safe to run so asp net each application runs its own application domain and therefore it is protected from other asp net applications on the same machine so it ignores the process isolation specified on IIS

HTTPHandlers ASP net builds upon a extensible architecture known as HTTP runtime This is responsible for handling the requests and sending the response It is upto an individual handlers such as asp net or web service to implement the work done on a request IIS supports a low level API known as ISAPI ASP net implements a similar concept with HTTP handlers A request is assigned to ASP net from IIS then ASP net examines entries in the httphandlers section based on the extension of the request to determine which handler the request should be send to

Features of asp net
ASPX ASP
Up gradation of ASP to ASPX is not required it supports side by side execution and hence a request can be given from ASP to ASPX and vice versa

Simplified Programming Model

ASP Net is a technology which can be implemented using any dot net language such as VB net C etc and hence there is no requirement of HTML JavaScript or VBScript to implement ASP NET

Simplified deployment ASP Net supports setup and deployment and hence the web app can be

defined with a web set up project which can be easily deployed on to the web server Where as for ASP CUTE FTP is used for deploying manually we have to upload

Better Performance

Caching

As the ASPX pages are complier based the performance of the web application will be faster then the ASP pages as they are interpreter based It is a process of maintaining the result or output of a web page temporarily for some period of time ASP supports Client Side caching where as ASP Net supports both client side and server side In ASP security is done by IIS or writing the code manually Where as ASP Net is defined with built in security features such as windows authentication Forms Authentication Passport Authentication Custom Authentication

Security

More powerful data access

Features of asp net

Web services

ASP net supports ADO and ADO Net as its database connectivity model which will be implemented using the most Powerful OOP S languages like VB Net and C and hence the database access using ASPX pages will be very powerful It is a code which will be published on the web which can be used by any applications written using any language for an platform or device Session Management in ASP Net can be maintained using the database and as well cookieless sessions are also supported It also supports enabling and disabling of session info within a web application ASP Net provides validation controls using which any type of client side validations are performed without writing any code

Better session Management

Simplified Form Validations

A web page is in 2 parts 1 Designing part HTML Content Flash Dreamweaver etc 2 logic Part sub programs and event procedures and it has also your database interaction ASP Net supports 2 techniques for creating web page 1 In Page Technique when you place design part code and logic part code with in a single file called as ASPX then it is called as inPage Technique 2 Code Behind Technique when design part code is represented with in ASPX file and logic part code is represented with in dll file then it is called as code behind technique ASP Supports only In Page technique DLL file is not a readable file so it is secured