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silverstripe-framework/docs/en/02_Developer_Guides/02_Controllers/06_Builtin_Middlewares.md

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NEW: Update docs to be compliant with Gatsby site (#9314) * First cut * Temporarily disable composer.json for netlify build * POC * New recursive directory query, various refinements * Fix flexbox * new styled components plugin * Apply frontmatter delimiters * Mobile styles, animation * Search * Redesign, clean up * Nuke the cache, try again * fix file casing * Remove production env file * ID headers * Move app to new repo * Add frontmatter universally * Hide children changelogs * Add how to title * New callout tags * Revert inline code block change * Replace note callouts * Fix icons * Repalce images * Fix icon * Fix image links * Use proper SQL icon
2019-11-18 05:58:33 +01:00
---
[CVE-2019-12246] Denial of Service on flush and development URL tools
2019-02-27 02:50:49 +01:00
title: Built-in Middleware
summary: Middleware components that come with SilverStripe Framework
NEW: Update docs to be compliant with Gatsby site (#9314) * First cut * Temporarily disable composer.json for netlify build * POC * New recursive directory query, various refinements * Fix flexbox * new styled components plugin * Apply frontmatter delimiters * Mobile styles, animation * Search * Redesign, clean up * Nuke the cache, try again * fix file casing * Remove production env file * ID headers * Move app to new repo * Add frontmatter universally * Hide children changelogs * Add how to title * New callout tags * Revert inline code block change * Replace note callouts * Fix icons * Repalce images * Fix icon * Fix image links * Use proper SQL icon
2019-11-18 05:58:33 +01:00
---
[CVE-2019-12246] Denial of Service on flush and development URL tools
2019-02-27 02:50:49 +01:00
# Built-in Middleware
SilverStripe Framework has a number of Middleware components.
You may find them in the [SilverStripe\Control\Middleware](api:SilverStripe\Control\Middleware) namespace.
| Name | Description |
| ---- | ----------- |
| [AllowedHostsMiddleware](api:SilverStripe\Control\Middleware\AllowedHostsMiddleware) | Secures requests by only allowing a whitelist of Host values |
| [CanonicalURLMiddleware](api:SilverStripe\Control\Middleware\CanonicalURLMiddleware) | URL normalisation and redirection |
| [ChangeDetectionMiddleware](api:SilverStripe\Control\Middleware\ChangeDetectionMiddleware) | Change detection via Etag / IfModifiedSince headers, conditionally sending a 304 not modified if possible. |\
| [ConfirmationMiddleware](api:SilverStripe\Control\Middleware\ConfirmationMiddleware) | Checks whether user manual confirmation is required for HTTPRequest |
| [ExecMetricMiddleware](api:SilverStripe\Control\Middleware\ExecMetricMiddleware) | Display execution metrics in DEV mode |
| [FlushMiddleware](api:SilverStripe\Control\Middleware\FlushMiddleware) | Triggers a call to flush() on all [Flushable](api:SilverStripe\Core\Flushable) implementors |
| [HTTPCacheControlMiddleware](api:SilverStripe\Control\Middleware\HTTPCacheControlMiddleware) | Controls HTTP response cache headers |
| [RateLimitMiddleware](api:SilverStripe\Control\Middleware\RateLimitMiddleware) | Access throttling, controls HTTP Retry-After header |
| [SessionMiddleware](api:SilverStripe\Control\Middleware\SessionMiddleware) | PHP Session initialisation |
| [TrustedProxyMiddleware](api:SilverStripe\Control\Middleware\TrustedProxyMiddleware) | Rewrites headers that provide IP and host details from upstream proxies |
| [URLSpecialsMiddleware](api:SilverStripe\Control\Middleware\URLSpecialsMiddleware) | Controls some of the [URL special variables](../../debugging/url_variable_tools) |
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