Pluggable MIME filters can be used to filter data for a particular MIME type. Unlike standard pluggable protocol handlers and pluggable namespace handlers, which only provide data, pluggable MIME filters both read and provide data. The pluggable MIME filter's implementation of the IInternetProtocolSink interface reads the data downloaded by the pluggable protocol handler. After the data has been processed, the pluggable MIME filter's implementation of IInternetProtocol allows the system to retrieve the processed data.Say your company wants to design products that will help parents keep their children from reading profanity on the Internet. You could design a pluggable MIME filter, register it to handle the text/* MIME types, and have it replace all profanity with <BEEP> or something similar. Any content that has a matching MIME type, such as a Web page (whose MIME type is usually text/html), will call the pluggable MIME filter and pass the filtered data to the user.http://msdn.microsoft.com/workshop/networking/pluggable/overview/overview.asp
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