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The Apache HTTP Server Reference Manual
by Apache Software Foundation
Paperback (6"x9"), 862 pages
ISBN 9781906966034
RRP £19.95 ($29.95)

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21.1  Filtering in Apache 2





Related Modules

Related Directives





mod_filter
mod_deflate
mod_ext_filter
mod_include
mod_charset_lite

FilterChain
FilterDeclare
FilterProtocol
FilterProvider
AddInputFilter
AddOutputFilter
RemoveInputFilter
RemoveOutputFilter
ExtFilterDefine
ExtFilterOptions
SetInputFilter
SetOutputFilter




The Filter Chain is available in Apache 2.0 and higher, and enables applications to process incoming and outgoing data in a highly flexible and configurable manner, regardless of where the data comes from. We can pre-process incoming data, and post-process outgoing data, at will. This is basically independent of the traditional request processing phases.


(Picture in printed edition)


Some examples of filtering in the standard Apache distribution are:

Apache also uses a number of filters internally to perform functions like chunking and byte-range handling.

A wider range of applications are implemented by third-party filter modules available from modules.apache.org1 and elsewhere. A few of these are:

ISBN 9781906966034The Apache HTTP Server Reference ManualSee the print edition