id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
value |
|---|---|---|
Mmdn_HTTP/HTTP_request_methods_6_3.txt | /HTTP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color... | |
Mmdn_HTTP/HTTP_request_methods_4_9.txt | Foundation ](https://foundation.mozilla.org/) .
Portions of this content are ©1998â 2024 by individual mozilla.org
contributors. Content available under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .
*[
Non-standard
... | |
Mmdn_HTTP/CSP_directives_26_1.txt | rade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
4. [ X-Frame-Options ... | |
Mmdn_HTTP/HTTP_request_methods_5_8.txt | otent) | Yes
[ Cacheable ](/en-US/docs/Glossary/Cacheable) | Yes
Allowed in HTML forms | Yes
## Syntax
http
GET /index.html
## Specifications
Specification
---
[ HTTP Semantics
# GET ](https://www.rfc-editor.org/rfc/rfc9110#GET)
## Browser compatibility
BCD tables... | |
Mmdn_HTTP/HTTP_headers_6_3.txt | aders/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/W... | |
Mmdn_HTTP/HTTP_headers_14_9.txt | ders/If-Range)
* [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
* [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
* [ ` Accept-Ranges ` ](/en-US/docs/Web/HTTP/Headers/Accept-Ranges)
* [ ` 206 Partial Content ` ](/en-US/docs/Web/HTTP/Status/206)
* [ ` 416 Range Not Satisfiabl... | |
Mmdn_HTTP/HTTP_headers_25_8.txt | _header_name) | no
## Syntax
http
Access-Control-Allow-Origin: *
Access-Control-Allow-Origin: <origin>
Access-Control-Allow-Origin: null
## Directives
` * `
For requests _without credentials_ , the literal value " ` * ` " can be
specified as a wildcard; the value tells bro... | |
Mmdn_HTTP/HTTP_headers_37_7.txt | cution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ... | |
Mmdn_HTTP/CSP_directives_18_5.txt | d Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
... | |
Mmdn_HTTP/HTTP_headers_21_2.txt | Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie ` ](/en-US/docs/Web/HTTP/Headers/Cook... | |
Mmdn_HTTP/HTTP_response_status_14_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/Permissions_Policy_directives_1_8.txt | lay-capture=<allowlist>;
` <allowlist> `
A list of origins for which permission is granted to use the feature. See [ `
Permissions-Policy ` > Syntax ](/en-US/docs/Web/HTTP/Headers/Permissions-
Policy#syntax) for more details.
## Default policy
The default allowlist for ` display-capture ` is ` self ` .
... | |
Mmdn_HTTP/HTTP_headers_35_2.txt | HTTP/Headers/Content-Length)
32. [ ` Content-Location ` ](/en-US/docs/Web/HTTP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-... | |
Mmdn_HTTP/Permissions_Policy_directives_31_2.txt | s/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie ` ](/en-US/docs/Web/HTTP/Headers/Cookie)
38. [ ` Critical-CH ` ... | |
Mmdn_HTTP/HTTP_response_status_50_5.txt | /417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/e... | |
Mmdn_HTTP/HTTP_headers_35_3.txt | P/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Sch... | |
Mmdn_HTTP/Permissions_Policy_directives_31_9.txt | illa)
* [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)
Visit [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the [ Mozilla Foundation ](https://foundation.mozilla.org/) .
Portions of this content are ©1998â 2024 by individ... | |
Mmdn_HTTP/CSP_directives_25_5.txt | ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/H... | |
Mmdn_HTTP/CSP_directives_30_2.txt | [ ` Content-Location ` ](/en-US/docs/Web/HTTP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Header... | |
Mmdn_HTTP/Permissions_Policy_directives_31_3.txt | ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefer... | |
Mmdn_HTTP/Permissions_Policy_directives_14_9.txt | tionâs ](https://www.mozilla.org) not-for-profit
parent, the [ Mozilla Foundation ](https://foundation.mozilla.org/) .
Portions of this content are ©1998â 2024 by individual mozilla.org
contributors. Content available under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_l... | |
Mmdn_HTTP/HTTP_request_methods_3_7.txt | /Headers/Permissions-Policy/document-domain) Experimental
10. [ Permissions-Policy: encrypted-media ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rende... | |
Mmdn_HTTP/CSP_directives_20_1.txt | eb/HTTP/Session)
6. [ Connection management in HTTP/1.x ](/en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transpo... | |
Mmdn_HTTP/HTTP_headers_1_1.txt | P/Basics_of_HTTP/Evolution_of_HTTP)
4. [ HTTP Messages ](/en-US/docs/Web/HTTP/Messages)
5. [ A typical HTTP session ](/en-US/docs/Web/HTTP/Session)
6. [ Connection management in HTTP/1.x ](/en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Prot... | |
Mmdn_HTTP/HTTP_response_status_2_6.txt | ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/... | |
Mmdn_HTTP/List_of_HTTP_header_fields_6_3.txt | ler general field value indicates that the given set of header fields is present in the trailer of a message encoded with [ chunked transfer coding ](/wiki/Chunked_transfer_coding "Chunked transfer coding") . | ` Trailer: Max-Forwards ` | Permanent | [ RFC ](/wiki/RFC_\(identifier\) "RFC \(identifier\)") [ 9110 ](... | |
Mmdn_HTTP/Permissions_Policy_directives_30_8.txt | and [ ` navigator.xr.requestSession() ` ](/en-US/docs/Web/API/XRSystem/requestSession "navigator.xr.requestSession\(\)") calls will return a [ ` Promise ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) that rejects with a [ ` DOMException ` ](/en-US/docs/Web/API/DOMException) of type ` SecurityError ` ... | |
Mmdn_HTTP/HTTP_response_status_12_5.txt | d Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Sta... | |
Mmdn_HTTP/HTTP_response_status_48_0.txt | * Skip to main content
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Mmdn_HTTP/Permissions_Policy_directives_10_8.txt |
Permissions-Policy: web-share=<allowlist>;
` <allowlist> `
A list of origins for which permission is granted to use the feature. See [ `
Permissions-Policy ` > Syntax ](/en-US/docs/Web/HTTP/Headers/Permissions-
Policy#syntax) for more details.
## Default policy
The default allowlist for ` w... | |
Mmdn_HTTP/Permissions_Policy_directives_20_7.txt | ution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ]... | |
Mmdn_HTTP/HTTP_headers_15_0.txt | * Skip to main content
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Mmdn_HTTP/Permissions_Policy_directives_29_0.txt | * Skip to main content
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Mmdn_HTTP/Permissions_Policy_directives_31_5.txt | 23 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status... | |
Mmdn_HTTP/CSP_directives_25_4.txt | Web/HTTP/Headers/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non... | |
Mmdn_HTTP/Permissions_Policy_directives_23_9.txt | ur communities
* [ MDN Community ](/en-US/community)
* [ MDN Forum ](https://discourse.mozilla.org/c/mdn/236)
* [ MDN Chat ](/discord)
## Developers
* [ Web Technologies ](/en-US/docs/Web)
* [ Learn Web Development ](/en-US/docs/Learn)
* [ MDN Plus ](/en-US/plus)
* [ Hacks Blog ](https://hacks.mozilla... | |
Mmdn_HTTP/HTTP_headers_13_2.txt | TP/Headers/Content-Length)
32. [ ` Content-Location ` ](/en-US/docs/Web/HTTP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-On... | |
Mmdn_HTTP/HTTP_response_status_56_1.txt | docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
4. [ X-Frame-Options ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web security guidel... | |
Mmdn_HTTP/HTTP_response_status_43_5.txt | TTP/Status/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Depende... | |
Mmdn_HTTP/Permissions_Policy_directives_19_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/CSP_directives_6_3.txt | TP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Sc... | |
Mmdn_HTTP/Permissions_Policy_directives_31_8.txt | n the [ Page Lifecycle API
](https://developer.chrome.com/blog/page-lifecycle-api) . This stops execution
of freezable tasks such as JavaScript timers (e.g. [ ` setTimeout() ` ](/en-
US/docs/Web/API/setTimeout) ) and [ ` fetch() ` ](/en-US/docs/Web/API/fetch)
callbacks.
## Syntax
http
Permissions-Poli... | |
Mmdn_HTTP/HTTP_response_status_6_8.txt | ropstat>
<D:prop>
<D:displayname>Loop Demo</D:displayname>
<D:resource-id>
<D:href>urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf8</D:href>
</D:resource-id>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:respon... | |
Mmdn_HTTP/HTTP_headers_23_5.txt | )
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Status/429)
49. [ ` 431 Request Header Fields Too Large ` ](/en-US/docs/Web/HTTP/Status/431)
50. [ ` 451 U... | |
Mmdn_HTTP/HTTP_response_status_18_5.txt | ocs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 ... | |
Mmdn_HTTP/Permissions_Policy_directives_28_7.txt | ile-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen)
14. [ Permissions-Poli... | |
Mmdn_HTTP/HTTP_headers_9_7.txt | rimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental... | |
Mmdn_HTTP/Permissions_Policy_directives_22_9.txt | s)
* [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
* [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)
Visit [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the [ Mozilla Foundation ](https://foundation.mozilla.org/... | |
Mmdn_HTTP/CSP_directives_14_0.txt | * Skip to main content
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* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_41_6.txt | (/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs... | |
Mmdn_HTTP/HTTP_response_status_42_8.txt | elp improve MDN
Was this page helpful to you?
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](https://github.com/mdn/content/blob/main/CONTRIBUTING.md "This will take you
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This page was last modified on Oct 7, 2023 by [ MDN contributors ](/en-
US/docs/Web/HTTP/Status/424/contribu... | |
Mmdn_HTTP/Header_Field_Definitions_6_0.txt | ### 14.6 Age
The Age response-header field conveys the sender's estimate of the
amount of time since the response (or its revalidation) was
generated at the origin server. A cached response is "fresh" if
its age does not exceed its freshness lifetime. Age values a... | |
Mmdn_HTTP/CSP_directives_22_8.txt | and the behavior may change in the future.
The HTTP [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-
Security-Policy) (CSP) **` referrer ` ** directive used to specify information
in the [ ` Referer ` ](/en-US/docs/Web/HTTP/Headers/Referer) header (with a
single ` r ` as this was a typo in the ori... | |
Mmdn_HTTP/HTTP_headers_13_5.txt | s/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/... | |
Mmdn_HTTP/HTTP_response_status_52_1.txt | s/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
... | |
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Mmdn_HTTP/HTTP_headers_33_8.txt | nt-Digest ` ](/en-US/docs/Web/HTTP/Headers/Want-Content-
Digest) instead. For ` id-* ` digest algorithms, use [ ` Want-Repr-Digest `
](/en-US/docs/Web/HTTP/Headers/Want-Repr-Digest) .
The **` Want-Digest ` ** request or response HTTP header requests the other
side to provide a [ digest ](/en-US/docs/Glossary/Digest) u... | |
Mmdn_HTTP/CSP_directives_16_3.txt | ` RTT ` ](/en-US/docs/Web/HTTP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Hea... | |
Mmdn_HTTP/CSP_directives_19_3.txt | ve-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/... | |
Mmdn_HTTP/CSP_directives_6_5.txt | s/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/... | |
Mmdn_HTTP/HTTP_response_status_40_5.txt | n-US/docs/Web/HTTP/Status/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424... | |
Mmdn_HTTP/HTTP_response_status_11_7.txt | /Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Pol... | |
Mmdn_HTTP/HTTP_response_status_26_8.txt | responses with any status code.
## Status
http
203 Non-Authoritative Information
## Specifications
Specification
---
[ HTTP Semantics
# status.203 ](https://httpwg.org/specs/rfc9110.html#status.203)
## See also
* [ ` 200 ` ](/en-US/docs/Web/HTTP/Status/200)
* [ Proxy server ... | |
Mmdn_HTTP/HTTP_request_methods_8_4.txt | 129. [ ` Width ` ](/en-US/docs/Web/HTTP/Headers/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/H... | |
Mmdn_HTTP/HTTP_response_status_51_1.txt | S/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Option... | |
Mmdn_HTTP/HTTP_response_status_49_1.txt | ent-Type-Options)
4. [ X-Frame-Options ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web security guidelines ](https://wiki.mozilla.org/Security/Guidelines/Web_Security)
7. [ Mozilla Observatory ](https://observatory.m... | |
Mmdn_HTTP/HTTP_response_status_24_9.txt | eb/HTTP/Status/304/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-
us/web/http/status/304/index.md?plain=1 "Folder: en-us/web/http/status/304
\(Opens in a new tab\)") ⢠[ Report a problem with this content
](https://github.com/mdn/content/issues/new?template=page-... | |
Mmdn_HTTP/Permissions_Policy_directives_20_1.txt | Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
4. [ X-Frame-Options ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
5. [ X-XS... | |
Mmdn_HTTP/HTTP_response_status_2_7.txt | TP/Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-P... | |
Mmdn_HTTP/HTTP_headers_36_0.txt | * Skip to main content
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* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/CSP_directives_7_6.txt | n-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. _[ ` CSP: style-src-attr ` ](/en-US/docs/W... | |
Mmdn_HTTP/HTTP_response_status_42_6.txt | elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [... | |
Mmdn_HTTP/CSP_directives_17_0.txt | * Skip to main content
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Mmdn_HTTP/HTTP_response_status_17_8.txt | docs/Web/HTTP/Headers/Link) header, which indicates the resources to
be loaded. It may also contain a [ ` Content-Security-Policy ` ](/en-
US/docs/Web/HTTP/CSP) header that is enforced while processing the early hint.
A server might send multiple ` 103 ` responses, for example, following a
redirect. Browsers only proc... | |
Mmdn_HTTP/HTTP_response_status_17_3.txt | [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-C... | |
Mmdn_HTTP/HTTP_response_status_22_0.txt | * Skip to main content
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Mmdn_HTTP/HTTP_request_methods_7_5.txt | /docs/Web/HTTP/Status/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Fai... | |
Mmdn_HTTP/HTTP_response_status_40_1.txt | en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transp... | |
Mmdn_HTTP/HTTP_headers_33_2.txt | docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie ` ](/en-US/docs/Web/HTTP/Headers/Cookie)
38. [ ` Critical-CH ` ](/en-US/docs/Web/HTTP/Headers/Critical-CH) Experimental
39. [ ` Cross-Origin-Embedder-Policy ` ](... | |
Mmdn_HTTP/HTTP_response_status_54_3.txt |
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. ... | |
Mmdn_HTTP/CSP_directives_22_9.txt | b ](https://github.com/mdn/)
* [ MDN Blog RSS Feed ](/en-US/blog/rss.xml)
## MDN
* [ About ](/en-US/about)
* [ Blog ](/en-US/blog/)
* [ Careers ](https://www.mozilla.org/en-US/careers/listings/?team=ProdOps)
* [ Advertise with us ](/en-US/advertising)
## Support
* [ Product help ](https://support.mo... | |
Mmdn_HTTP/Permissions_Policy_directives_1_2.txt | rs/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie... | |
Mmdn_HTTP/HTTP_response_status_0_5.txt | endency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Status/4... | |
Mmdn_HTTP/Permissions_Policy_directives_2_6.txt | lem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US... | |
Mmdn_HTTP/Permissions_Policy_directives_13_0.txt | * Skip to main content
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* References [ References ](/en-US/docs/Web)
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Mmdn_HTTP/HTTP_headers_21_0.txt | * Skip to main content
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* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
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Mmdn_HTTP/HTTP_headers_32_4.txt | [ ` X-Forwarded-Host ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard
135. [ ` X-Forwarded-Proto ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto) Non-standard
136. [ ` X-Frame-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
137. [ ` X-XSS-Protection ` ](/en-US/docs/Web/HTTP/He... | |
Mmdn_HTTP/HTTP_headers_19_6.txt | Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [ ` CSP: trusted-types ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/trus... | |
Mmdn_HTTP/HTTP_headers_18_5.txt | 426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Status/429)
49. [ ` 431 Request Header Fields Too Large ` ](/en-US/docs/Web/HTTP/Status/431)
50. [ ` 451 Unavailable For Legal Reasons ` ](/en-US/docs/Web/HTTP/Status/451)
... | |
Mmdn_HTTP/HTTP_response_status_0_8.txt | s/421/index.md?plain=1 "Folder: en-us/web/http/status/421
\(Opens in a new tab\)") ⢠[ Report a problem with this content
](https://github.com/mdn/content/issues/new?template=page-report.yml&mdn-
url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-
US%2Fdocs%2FWeb%2FHTTP%2FStatus%2F421&metadata=%3C%21--+Do+not+make+changes... | |
Mmdn_HTTP/Permissions_Policy_directives_4_5.txt | /HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Status/429)
49. [ ` 431 Request... | |
Mmdn_HTTP/Permissions_Policy_directives_23_6.txt | cript-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)... | |
Mmdn_HTTP/HTTP_headers_8_4.txt | 131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. _[ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard _
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
134. [ ` X-Forwarded-Ho... | |
Mmdn_HTTP/HTTP_response_status_21_5.txt | S/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 4... | |
Mmdn_HTTP/HTTP_headers_10_6.txt | r ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US... | |
Mmdn_HTTP/HTTP_response_status_41_8.txt | However, no standard use convention exists
and different entities use it in different contexts.
## Status
http
402 Payment Required
## Example response
http
HTTP/1.1 402 Payment Required
Date: Wed, 21 Oct 2015 07:28:00 GMT
## Specifications
Specification
---
[ HT... | |
Mmdn_HTTP/CSP_directives_14_9.txt | 3
# directive-frame-ancestors ](https://w3c.github.io/webappsec-
csp/#directive-frame-ancestors)
## Browser compatibility
BCD tables only load in the browser with JavaScript enabled. Enable
JavaScript to view data.
## See also
* [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Secur... | |
Mmdn_HTTP/HTTP_headers_17_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/Permissions_Policy_directives_34_6.txt | /HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [ ` CSP: trusted-types ` ](/en-US/docs/Web/HTTP/Heade... |
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