ATL Server

ATL Server

ATL Server is a technology originally developed by Microsoft for developing web based applications. It uses a tag replacement engine written in C++ to render web pages. It draws on the existing technologies like ISAPI and the Active Template Library, and includes a template library which is dedicated for use with developing Web-based applications.

ATL Server first appeared with Visual Studio .NET 2003. It was included in Visual Studio 2005 but is no longer supported since the release of Visual Studio 2008. Most of the ATL Server code base has been released as a shared source project on CodePlex, a Microsoft-run code sharing web site.

A typical ATL server application consists of at least one ISAPI extension DLL along with one or a number of Server Response Files (.srf) and their associated application DLL files which provide the application functionality.

SRF Files

SRF files can contain a mix of HTML and script tags. SRF script tags are denoted by the {{ opening and }} closing braces.

A single SRF file may call code from a number of application DLLs. Similarly, a single application DLL may serve a number of SRF files.

The simplest SRF file must contain one or more references to application DLLs and one or more calls to a functions within those DLLs. A simple SRF file would look something like this:

{{handler ATLServerHelloWorld.dll/Default}}


The first line of the file:

{{handler ATLServerHelloWorld.dll/Default}}
is used to identify an application DLL file that the SRF file will make calls to.

Within the file, function calls would look like this:



External links

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