# Package org.apache.catalina.filters

Interface Summary
CsrfPreventionFilter.NonceCache<T>

Class Summary
AddDefaultCharsetFilter: Filter that explicitly sets the default character set for media subtypes of the "text" type to ISO-8859-1, or another user defined character set.
AddDefaultCharsetFilter.ResponseWrapper: Wrapper that adds a character set for text media types if no character set is specified.
Constants: Manifest constants for this Java package.
CorsFilter: A `Filter` that enable client-side cross-origin requests by implementing W3C's CORS (Cross-Origin Resource Sharing) specification for resources.
CsrfPreventionFilter: Provides basic CSRF protection for a web application.
CsrfPreventionFilter.CsrfResponseWrapper
CsrfPreventionFilter.LruCache<T>
CsrfPreventionFilterBase
ExpiresFilter: ExpiresFilter is a Java Servlet API port of Apache mod_expires to add '`Expires`' and '`Cache-Control: max-age=`' headers to HTTP response according to its '`Content-Type`'.
ExpiresFilter.Duration: Duration composed of an `ExpiresFilter.Duration.amount` and a `ExpiresFilter.Duration.unit`
ExpiresFilter.ExpiresConfiguration: Main piece of configuration of the filter.
FailedRequestFilter: Filter that will reject requests if there was a failure during parameter parsing.
FilterBase: Base class for filters that provides generic initialisation and a simple no-op destruction.
HttpHeaderSecurityFilter: Provides a single configuration point for security measures that required the addition of one or more HTTP headers to the response.
RemoteAddrFilter: Concrete implementation of `RequestFilter` that filters based on the string representation of the remote client's IP address.
RemoteCIDRFilter
RemoteHostFilter: Concrete implementation of `RequestFilter` that filters based on the remote client's host name.
RemoteIpFilter: Servlet filter to integrate "X-Forwarded-For" and "X-Forwarded-Proto" HTTP headers.
RemoteIpFilter.XForwardedRequest
RequestDumperFilter: Implementation of a Filter that logs interesting contents from the specified Request (before processing) and the corresponding Response (after processing).
RequestFilter: Implementation of a Filter that performs filtering based on comparing the appropriate request property (selected based on which subclass you choose to configure into your Container's pipeline) against the regular expressions configured for this Filter.
RestCsrfPreventionFilter: Provides basic CSRF protection for REST APIs.
SessionInitializerFilter: A `Filter` that initializes the `HttpSession` for the `HttpServletRequest` by calling its getSession() method.
SetCharacterEncodingFilter: Example filter that sets the character encoding to be used in parsing the incoming request, either unconditionally or only if the client did not specify a character encoding.
WebdavFixFilter: Filter that attempts to force MS WebDAV clients connecting on port 80 to use a WebDAV client that actually works.

Enum Summary
CorsFilter.CORSRequestType: Enumerates varies types of CORS requests.
ExpiresFilter.DurationUnit: Duration unit
ExpiresFilter.StartingPoint: Expiration configuration starting point.