ISAPI

From RemObjects Software

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ISAPI filters are plugins for IIS, either as a filter or a page that are used to produce dynamic content on websites.

An ISAPI dll is a plain dll with 4 predefined exports that are called by IIS to generate the content. Filters are used to filter another file into dynamic content, often used to add support for languages like PHP and Perl into IIS. ISAPI dlls allow for fast content generation because they can be kept in memory between requests.

RemObjects SDK has templates to generate ISAPI based servers.