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What is an API?
What is an API?
Published: 2015/06/19
Channel: MuleSoft Videos
ISAPI Filters in IIS
ISAPI Filters in IIS
Published: 2016/10/02
Channel: Dotnet Queries
ISAPI Extension
ISAPI Extension
Published: 2011/11/11
Channel: Der Rick
What is API ?
What is API ?
Published: 2017/08/21
Channel: Omer akreyi
TCP/IP Programming in C
TCP/IP Programming in C
Published: 2012/05/26
Channel: Prof. Vinod Pillai
Web Server vs  Application Server
Web Server vs Application Server
Published: 2014/08/23
Channel: Durga Software Solutions
Internet Programming Tutorial - 01
Internet Programming Tutorial - 01
Published: 2014/03/14
Channel: David Robin
How JD Edwards Application Interface Services(AIS) Server works?
How JD Edwards Application Interface Services(AIS) Server works?
Published: 2017/06/13
Channel: JDEClouds
Basic concepts of web applications, how they work and the HTTP protocol
Basic concepts of web applications, how they work and the HTTP protocol
Published: 2014/07/27
Channel: Natural Programmer
Internet Professional Developers Conf    MFC for Internet Server Applications ISAPI   Mike Blaszczak
Internet Professional Developers Conf MFC for Internet Server Applications ISAPI Mike Blaszczak
Published: 2016/09/29
Channel: froo mee
Coding With Python :: Learn API Basics to Grab Data with Python
Coding With Python :: Learn API Basics to Grab Data with Python
Published: 2014/02/12
Channel: CodingEntrepreneurs
Hindi | What is API? | Application programming interface
Hindi | What is API? | Application programming interface
Published: 2017/01/11
Channel: Being Techy
Configuring IIS for the Qlik Proxy Service API
Configuring IIS for the Qlik Proxy Service API
Published: 2016/04/29
Channel: Jeffrey Goldberg
what is api? simple explanation
what is api? simple explanation
Published: 2017/08/28
Channel: Team FixiT
Web Programming - Internet Programming Introduction
Web Programming - Internet Programming Introduction
Published: 2013/03/27
Channel: Web and Database Programming
Internet Programming: Unit4-P1
Internet Programming: Unit4-P1
Published: 2012/06/07
Channel: UHV GamingProgram
Vordel API Server Analytics
Vordel API Server Analytics
Published: 2012/10/23
Channel: VordelTube
what is api
what is api
Published: 2015/07/15
Channel: MD A Siddique
Technical walkthrough: Ionic ISAPI URL Rewrite filter
Technical walkthrough: Ionic ISAPI URL Rewrite filter
Published: 2009/03/31
Channel: pluginseo
Internet Programming Tutorial - 04
Internet Programming Tutorial - 04
Published: 2014/03/14
Channel: David Robin
API
API's Explained // delivers app services, builds apps (with LEGO)
Published: 2016/11/01
Channel: Danielle Thé
Boundary - Configuring the IIS ISAPI Instrumentation
Boundary - Configuring the IIS ISAPI Instrumentation
Published: 2014/09/11
Channel: BoundaryMonitoring
Internet Programming Tutorial - 03
Internet Programming Tutorial - 03
Published: 2014/03/14
Channel: David Robin
ISAPI Filters
ISAPI Filters
Published: 2011/11/11
Channel: Der Rick
MikroTik API - Install MikroTik PHP Web API on Windows WAMP #1
MikroTik API - Install MikroTik PHP Web API on Windows WAMP #1
Published: 2016/11/06
Channel: HomeTech
Calling LoadLibraryEx on ISAPI filter aspnet_filter.dll" failed
Calling LoadLibraryEx on ISAPI filter aspnet_filter.dll" failed
Published: 2014/09/30
Channel: Be Social Go Viral
Internet Programming Tutorial - 02
Internet Programming Tutorial - 02
Published: 2014/03/14
Channel: David Robin
HTTP Error 404.2 - Not Found. The page you are requesting cannot be served
HTTP Error 404.2 - Not Found. The page you are requesting cannot be served
Published: 2015/04/17
Channel: Admin Technomark
app clinic(internet programming)
app clinic(internet programming)
Published: 2013/04/04
Channel: EXeCluSiVe
Internet Programming Project (Hotel Management System)
Internet Programming Project (Hotel Management System)
Published: 2016/12/24
Channel: Aly Anwar
Bonrix SMS Server 4 HTTP API
Bonrix SMS Server 4 HTTP API
Published: 2012/07/13
Channel: Renish Ladani
Authenticate and Create a Server Using the API
Authenticate and Create a Server Using the API
Published: 2015/04/11
Channel: CenturyLink Cloud Guides
Internet Programming (13): Display Event By ID
Internet Programming (13): Display Event By ID
Published: 2014/08/09
Channel: professoryunker
This ISAPI Guide Takes It One Step Further
This ISAPI Guide Takes It One Step Further
Published: 2015/03/24
Channel: TheArtofService
Internet Programming (08): News Flash Edit
Internet Programming (08): News Flash Edit
Published: 2014/08/01
Channel: professoryunker
What is ASP NET Web API
What is ASP NET Web API
Published: 2016/08/24
Channel: kudvenkat
Discord Bot Making Tutorial
Discord Bot Making Tutorial
Published: 2017/01/26
Channel: Sarruby Tarruby
How to Self Host ASP.NET Web API
How to Self Host ASP.NET Web API
Published: 2016/10/03
Channel: CodeOpinion
Internet Programming (10): SQL Upload
Internet Programming (10): SQL Upload
Published: 2014/07/28
Channel: professoryunker
#29 Internet of Things with ESP8266/Arduino IDE #1: Calling RESTful JSON Services
#29 Internet of Things with ESP8266/Arduino IDE #1: Calling RESTful JSON Services
Published: 2015/11/03
Channel: Andreas Spiess
Tutorial: Creating Host Objects with the R80 Management API | Security Management
Tutorial: Creating Host Objects with the R80 Management API | Security Management
Published: 2016/11/22
Channel: Check Point Software Technologies, Ltd.
Internet Programming (01) Back Up Data
Internet Programming (01) Back Up Data
Published: 2016/08/24
Channel: professoryunker
Internet Programming (02) Site Pages
Internet Programming (02) Site Pages
Published: 2016/08/24
Channel: professoryunker
Internet Programming 1
Internet Programming 1
Published: 2017/04/20
Channel: Jayavanee Sugumaran
ESP8266 Web Client: Accessing API
ESP8266 Web Client: Accessing API's Using Arduino IDE
Published: 2017/02/26
Channel: ACROBOTIC
PHPMIXBILL v4.6 - MikroTik PHP API Installation for Mikrotik Hotspot PPPOE server on windows WAMP
PHPMIXBILL v4.6 - MikroTik PHP API Installation for Mikrotik Hotspot PPPOE server on windows WAMP
Published: 2016/10/04
Channel: HomeTech
Internet Programming (12): MySQL Review
Internet Programming (12): MySQL Review
Published: 2016/10/01
Channel: professoryunker
Swift: Using External Databases and API
Swift: Using External Databases and API's Part 1: Setting Up The Server
Published: 2014/08/22
Channel: Skip Wilson
How to Send Free SMS Using SMS API in PHP?[With Source Code]
How to Send Free SMS Using SMS API in PHP?[With Source Code]
Published: 2017/08/23
Channel: TechSupportNep
How to Pronounce Common Isdn Application Programming Interface
How to Pronounce Common Isdn Application Programming Interface
Published: 2016/12/01
Channel: Dictionary Voice
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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The Internet Server Application Programming Interface (ISAPI) is an N-tier API of Internet Information Services (IIS), Microsoft's collection of Windows-based web server services. The most prominent application of IIS and ISAPI is Microsoft's web server.

The ISAPI has also been implemented by Apache's mod_isapi module so that server-side web applications written for Microsoft's IIS can be used with Apache, and other third-party web servers like Zeus Web Server offer ISAPI interfaces.

Microsoft's web server application software is called Internet Information Services, which is made up of a number of "sub-applications" and is very configurable. ASP.NET is one such slice of IIS, allowing a programmer to write web applications in his or her choice of programming language (VB.NET, C#, F#) that's supported by the Microsoft .NET CLR. ISAPI is a much lower-level programming system, giving much better performance, at the expense of simplicity.

ISAPI applications[edit]

ISAPI consists of two components: Extensions and Filters. These are the only two types of applications that can be developed using ISAPI. Both Filters and Extensions must be compiled into DLL files which are then registered with IIS to be run on the web server.

ISAPI applications can be written using any language which allows the export of standard C functions, for instance C, C++, Delphi. There are a couple of libraries available which help to ease the development of ISAPI applications, and in Delphi Pascal the Intraweb components for web-application development. MFC includes classes for developing ISAPI applications. Additionally, there is the ATL Server technology which includes a C++ library dedicated to developing ISAPI applications.

Extensions[edit]

ISAPI Extensions are true applications that run on IIS. They have access to all of the functionality provided by IIS. ISAPI extensions are implemented as DLLs that are loaded into a process that is controlled by IIS. Clients can access ISAPI extensions in the same way they access a static HTML page. Certain file extensions or a complete folder or site can be mapped to be handled by an ISAPI extension.

Filters[edit]

ISAPI filters are used to modify or enhance the functionality provided by IIS. They always run on an IIS server and filter every request until they find one they need to process. Filters can be programmed to examine and modify both incoming and outgoing streams of data. Internally programmed and externally configured priorities determine in which order filters are called.

Filters are implemented as DLLs and can be registered on an IIS server on a site level or a global level (i.e., they apply to all sites on an IIS server). Filters are initialised when the worker process is started and listens to all requests to the site on which it is installed.

Common tasks performed by ISAPI filters include:

  • Changing request data (URLs or headers) sent by the client
  • Controlling which physical file gets mapped to the URL
  • Controlling the user name and password used with anonymous or basic authentication
  • Modifying or analyzing a request after authentication is complete
  • Modifying a response going back to the client
  • Running custom processing on "access denied" responses
  • Running processing when a request is complete
  • Run processing when a connection with the client is closed
  • Performing special logging or traffic analysis.
  • Performing custom authentication.
  • Handling encryption and compression.

Common ISAPI applications[edit]

This is a list of common ISAPI applications implemented as ISAPI extensions:

  • Active Server Pages (ASP), installed as standard
  • ActiveVFP, Active Visual FoxPro installed on IIS
  • ASP.NET, installed as standard on IIS 6.0 onwards
  • ColdFusion, later versions of ColdFusion are installable on IIS
  • Perl ISAPI (aka Perliis), available for free to install
  • PHP, available for free to install, not maintained anymore.[1]

ISAPI Development[edit]

ISAPI applications can be developed using any development tool that can generate a Windows DLL. Wizards for generating ISAPI framework applications have been available in Microsoft development tools since Visual C++ 4.0.

See also[edit]

References[edit]

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