id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
value |
|---|---|---|
Mmdn_HTTP/HTTP_response_status_22_8.txt | 3 ](https://www.rfc-editor.org/rfc/rfc4918#section-11.3)
## Help improve MDN
Was this page helpful to you?
Yes No
[ Learn how to contribute
](https://github.com/mdn/content/blob/main/CONTRIBUTING.md "This will take you
to our contribution guidelines on GitHub.") .
This page was last modified on Oct 5, 2023... | |
Mmdn_HTTP/Permissions_Policy_directives_22_2.txt | 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 ` ](/en-US/docs/Web/HTTP/Headers/Critical-CH) Experimental... | |
Mmdn_HTTP/HTTP_headers_27_2.txt | nt-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 ` ](/en-US/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy)
40. [ ` Cross-Origin-Opener-Policy ` ](/en-US/docs/Web/HTTP... | |
Mmdn_HTTP/HTTP_request_methods_1_8.txt | sentation_header) that might describe the
erroneous body are instead assumed to describe the response which a similar `
GET ` request would have received.
If the response to a ` HEAD ` request shows that a cached URL response is now
outdated, the cached copy is invalidated even if no ` GET ` request was made.
Request... | |
Mmdn_HTTP/Permissions_Policy_directives_27_8.txt | JavaScript/Reference/Global_Objects/Promise)
returned by ` navigator.credentials.get({otp}) ` will reject with a `
SecurityError ` [ ` DOMException ` ](/en-US/docs/Web/API/DOMException) .
## Syntax
http
Permissions-Policy: otp-credentials=<allowlist>;
` <allowlist> `
A list of origins for... | |
Mmdn_HTTP/CSP_directives_10_4.txt | en-US/docs/Web/HTTP/Headers/Warning) Deprecated
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. [ `... | |
Mmdn_HTTP/HTTP_request_methods_7_6.txt | cs/Web/HTTP/Headers/Content-Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/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/HTT... | |
Mmdn_HTTP/Permissions_Policy_directives_11_7.txt | 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-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/gamepad) E... | |
Mmdn_HTTP/Header_Field_Definitions_1_0.txt | ### 14.1 Accept
The Accept request-header field can be used to specify certain media types
which are acceptable for the response. Accept headers can be used to indicate
that the request is specifically limited to a small set of desired types, as
in the case of a request for an in-line image.
Ac... | |
Mmdn_HTTP/Permissions_Policy_directives_23_4.txt | ions)
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-Host ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard
135. [ ` X-Forw... | |
Mmdn_HTTP/HTTP_request_methods_2_5.txt | t ` ](/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/HTTP/Status/424)
... | |
Mmdn_HTTP/CSP_directives_28_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/HTTP_headers_25_7.txt | Policy: display-capture ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/display-capture)
9. [ Permissions-Policy: document-domain ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/document-domain) Experimental
10. [ Permissions-Policy: encrypted-media ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/encrypt... | |
Mmdn_HTTP/HTTP_request_methods_4_1.txt | ement 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 Transport Security (HSTS) ](/en-US/docs/Web/HTTP/... | |
Mmdn_HTTP/Header_Field_Definitions_56_0.txt | ### 14.47 WWW-Authenticate
The WWW-Authenticate response-header field MUST be included in 401
(Unauthorized) response messages. The field value consists of at least one
challenge that indicates the authentication scheme(s) and parameters
applicable to the Request-URI.
WWW-Authenticate = "WWW-A... | |
Mmdn_HTTP/List_of_HTTP_header_fields_8_0.txt | ## Effects of selected fields [ [ edit
](/w/index.php?title=List_of_HTTP_header_fields&action=edit§ion=11 "Edit
section: Effects of selected fields") ]
### Avoiding caching [ [ edit
](/w/index.php?title=List_of_HTTP_header_fields&action=edit§ion=12 "Edit
section: Avoiding caching") ]
If a web server res... | |
Mmdn_HTTP/Permissions_Policy_directives_28_1.txt | STS) ](/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-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web s... | |
Mmdn_HTTP/List_of_HTTP_header_fields_11_0.txt | ## External links [ [ edit
](/w/index.php?title=List_of_HTTP_header_fields&action=edit§ion=15 "Edit
section: External links") ]
* [ Headers: Permanent Message Header Field Names ](https://www.iana.org/assignments/message-headers/message-headers.xml#perm-headers%7CMessage)
* RFC [ 6265 ](https://datatracker.... | |
Mmdn_HTTP/HTTP_response_status_33_2.txt | ngth)
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-Only ` ](/en-US/docs/We... | |
Mmdn_HTTP/HTTP_response_status_29_6.txt | -src-attr ` ](/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 ` ... | |
Mmdn_HTTP/HTTP_response_status_25_6.txt | : script-src-attr ` ](/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... | |
Mmdn_HTTP/CSP_directives_19_4.txt | enticate ` ](/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-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Header... | |
Mmdn_HTTP/Header_Field_Definitions_5_0.txt | ### 14.5 Accept-Ranges
The Accept-Ranges response-header field allows the server to
indicate its acceptance of range requests for a resource:
Accept-Ranges = "Accept-Ranges" ":" acceptable-ranges
acceptable-ranges = 1#range-unit | "none"... | |
Mmdn_HTTP/HTTP_response_status_0_7.txt | icy: 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-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers/Permissions-Po... | |
Mmdn_HTTP/Permissions_Policy_directives_21_1.txt | 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-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protec... | |
Mmdn_HTTP/HTTP_response_status_17_9.txt | : text/html
<!DOCTYPE html>
...
<link rel="stylesheet" rel="preload" href="style.css" />
...
## Specifications
Specification
---
[ An HTTP Status Code for Indicating Hints
# section-2 ](https://www.rfc-editor.org/rfc/rfc8297#section-2)
[ HTML Standard
# early-hints ](https://h... | |
Mmdn_HTTP/Permissions_Policy_directives_26_6.txt | 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/Headers/Con... | |
Mmdn_HTTP/HTTP_request_methods_6_1.txt | P/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-Transport-Security)
... | |
Mmdn_HTTP/HTTP_response_status_24_8.txt | resource that would have
resulted in a [ ` 200 ` ](/en-US/docs/Web/HTTP/Status/200) ` OK ` response if
the condition evaluated to true.
The response must not contain a body and must include the headers that would
have been sent in an equivalent [ ` 200 ` ](/en-US/docs/Web/HTTP/Status/200) `
OK ` response: [ ` Cache-C... | |
Mmdn_HTTP/HTTP_headers_19_9.txt |
* [ 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.mozilla.org/products/mdn-plus)
* [ Report an issue ](/en-US/docs/MDN/Community/Issues)... | |
Mmdn_HTTP/HTTP_headers_5_9.txt | set referrer policies for
individual requests:
html
<a href="http://example.com" referrerpolicy="origin">â¦</a>
Alternatively, you can set a ` noreferrer ` [ link relation ](/en-
US/docs/Web/HTML/Attributes/rel) on an ` a ` , ` area ` , or ` link `
elements:
html
<a href="http://... | |
Mmdn_HTTP/HTTP_headers_31_9.txt | load in the browser with JavaScript enabled. Enable
JavaScript to view data.
## See also
* [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
* [ Controlling the XSS Filter â Microsoft ](https://docs.microsoft.com/archive/blogs/ieinternals/controlling-the-xss-filter)
* [ ... | |
Mmdn_HTTP/CSP_directives_11_4.txt | ` Warning ` ](/en-US/docs/Web/HTTP/Headers/Warning) Deprecated
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-Optio... | |
Mmdn_HTTP/Permissions_Policy_directives_34_9.txt | 024-03-11T02%3A28%3A32.000Z%0A%0A%3C%2Fdetails%3E
"This will take you to GitHub to file a new issue.")
[ MDN logo ](/)
Your blueprint for a better internet.
* [ MDN on Mastodon ](https://mozilla.social/@mdn)
* [ MDN on X (formerly Twitter) ](https://twitter.com/mozdevnet)
* [ MDN on GitHub ](https://github... | |
Mmdn_HTTP/Permissions_Policy_directives_2_1.txt | y (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-XSS-Prot... | |
Mmdn_HTTP/Permissions_Policy_directives_32_3.txt | TP/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-Prefers-Reduced-Transparency) Experimental
89. [ ` Se... | |
Mmdn_HTTP/HTTP_headers_2_1.txt | 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 ](/en-US/docs/Web/HTT... | |
Mmdn_HTTP/HTTP_response_status_27_5.txt | S/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/HTTP/Status/424)
45. [ ` 4... | |
Mmdn_HTTP/HTTP_headers_36_6.txt | ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/sandbox)
23. [ ` CSP: script-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/We... | |
Mmdn_HTTP/CSP_directives_6_7.txt | tal
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-rendered) Experimental
12. [ Permissions-Policy: execu... | |
Mmdn_HTTP/HTTP_response_status_18_1.txt | (/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-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web securit... | |
Mmdn_HTTP/HTTP_response_status_14_3.txt | /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-CH-Prefers-Reduced-Motion ` ](/... | |
Mmdn_HTTP/HTTP_response_status_60_5.txt | tus/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/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/e... | |
Mmdn_HTTP/HTTP_response_status_16_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_0_2.txt | curity-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/Cookie... | |
Mmdn_HTTP/HTTP_response_status_8_4.txt | TTP/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-stan... | |
Mmdn_HTTP/CSP_directives_4_5.txt | 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/HTTP/Status/4... | |
Mmdn_HTTP/Permissions_Policy_directives_2_7.txt | le-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 ](/en-US/d... | |
Mmdn_HTTP/HTTP_request_methods_4_7.txt | missions-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-rendered) Experim... | |
Mmdn_HTTP/HTTP_headers_4_10.txt | ivacy/websites/)
* [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
* [ 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) n... | |
Mmdn_HTTP/Header_Field_Definitions_33_0.txt | ### 14.26 If-None-Match
The If-None-Match request-header field is used with a method to make it
conditional. A client that has one or more entities previously obtained from
the resource can verify that none of those entities is current by including a
list of their associated entity tags in the If-None-Match header f... | |
Mmdn_HTTP/HTTP_response_status_60_3.txt | /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-CH-Prefers-Reduced-Motion ` ](/... | |
Mmdn_HTTP/CSP_directives_8_3.txt | tal
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/Headers/Sec-CH-Pre... | |
Mmdn_HTTP/CSP_directives_3_5.txt | 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/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Statu... | |
Mmdn_HTTP/HTTP_headers_0_4.txt | tions ` ](/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-Host ` ](/en-US/docs/Web/HTTP/He... | |
Mmdn_HTTP/HTTP_response_status_14_8.txt | ain/CONTRIBUTING.md "This will take you
to our contribution guidelines on GitHub.") .
This page was last modified on Apr 10, 2023 by [ MDN contributors ](/en-
US/docs/Web/HTTP/Status/425/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-
us/web/http/status/425/index... | |
Mmdn_HTTP/HTTP_response_status_48_9.txt | 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 individual mozilla.org
contributors. Conte... | |
Mmdn_HTTP/Header_Field_Definitions_13_0.txt | ### 14.9.4 Cache Revalidation and Reload Controls
Sometimes a user agent might want or need to insist that a cache revalidate
its cache entry with the origin server (and not just with the next cache along
the path to the origin server), or to reload its cache entry from the origin
server. End-to-end revalidation mig... | |
Mmdn_HTTP/HTTP_response_status_50_6.txt | ontent-Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/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-Sec... | |
Mmdn_HTTP/HTTP_headers_20_8.txt | change in the future.
The **` DPR ` ** [ device client hint ](/en-US/docs/Web/HTTP/Client_hints)
request header provides the client device pixel ratio. This ratio is the
number of physical device pixels corresponding to every [ CSS pixel ](/en-
US/docs/Glossary/CSS_pixel) .
Header type | [ Request header ](/en-US/d... | |
Mmdn_HTTP/HTTP_response_status_4_7.txt | 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-rendered) Experimental
12. [ Permissions-Policy: execution-... | |
Mmdn_HTTP/Header_Field_Definitions_55_0.txt | ### 14.46 Warning
The Warning general-header field is used to carry additional information about
the status or transformation of a message which might not be reflected in the
message. This information is typically used to warn about a possible lack of
semantic transparency from caching operations or transformations ... | |
Mmdn_HTTP/HTTP_headers_27_4.txt | orwarded-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/Headers/X-... | |
Mmdn_HTTP/HTTP_response_status_5_2.txt | cation ` ](/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/Headers/Content-Secur... | |
Mmdn_HTTP/HTTP_response_status_51_2.txt | b/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/Headers/Content-Security-Policy-Report-Only)
... | |
Mmdn_HTTP/CSP_directives_9_2.txt | 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/Headers/Content-Security-Policy-Report-Only)... | |
Mmdn_HTTP/Permissions_Policy_directives_35_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/HTTP_response_status_49_7.txt | issions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen)
14. [ Permissions-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/gamepad) Experimental
15. [ Permissions-Policy: geolocation ](... | |
Mmdn_HTTP/HTTP_headers_10_4.txt | 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-standard
133. [ ` X-Forwarded-For ` ](/en-US/... | |
Mmdn_HTTP/Header_Field_Definitions_42_0.txt | ### 14.35 Range
| |
Mmdn_HTTP/CSP_directives_30_9.txt | ut/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/) .
Portions of this content are ©1998â... | |
Mmdn_HTTP/HTTP_response_status_19_8.txt | tus/508/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-
us/web/http/status/508/index.md?plain=1 "Folder: en-us/web/http/status/508
\(Opens in a new tab\)") ⢠[ Report a problem with this content
](https://github.com/mdn/content/issues/new?template=page-report.yml&... | |
Mmdn_HTTP/HTTP_headers_33_4.txt | on-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
134. [ ` 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-O... | |
Mmdn_HTTP/Permissions_Policy_directives_19_6.txt | 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/trusted-typ... | |
Mmdn_HTTP/Permissions_Policy_directives_34_8.txt | its returned [ ` Promise ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) with a value of ` false ` .
* [ ` Bluetooth.getDevices() ` ](/en-US/docs/Web/API/Bluetooth/getDevices) will reject its returned [ ` Promise ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) with a ` SecurityError... | |
Mmdn_HTTP/Permissions_Policy_directives_1_9.txt | ion.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
]: Non-... | |
Mmdn_HTTP/HTTP_headers_34_4.txt | s/Web/HTTP/Headers/Want-Repr-Digest) Experimental
128. [ ` Warning ` ](/en-US/docs/Web/HTTP/Headers/Warning) Deprecated
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-... | |
Mmdn_HTTP/CSP_directives_0_9.txt | %0A*+MDN+URL%3A+https%3A%2F%2Fdeveloper.mozilla.org%2Fen-
US%2Fdocs%2FWeb%2FHTTP%2FHeaders%2FContent-Security-Policy%2Frequire-trusted-
types-
for%0A*+GitHub+URL%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-
us%2Fweb%2Fhttp%2Fheaders%2Fcontent-security-policy%2Frequire-trusted-types-
for%2Find... | |
Mmdn_HTTP/HTTP_response_status_24_4.txt | 29. [ ` 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/Heade... | |
Mmdn_HTTP/HTTP_response_status_58_7.txt | al
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-rendered) Experimental
12. [ Permissions-Policy: execut... | |
Mmdn_HTTP/HTTP_headers_13_9.txt | -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.org/)
[ Mozilla logo ](https://www.moz... | |
Mmdn_HTTP/Permissions_Policy_directives_2_3.txt | rs/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/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduc... | |
Mmdn_HTTP/HTTP_headers_26_5.txt | US/docs/Web/HTTP/Status/416)
39. [ ` 417 Expectation Failed ` ](/en-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)
4... | |
Mmdn_HTTP/HTTP_response_status_32_3.txt | -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-CH-Prefers-Reduced-Moti... | |
Mmdn_HTTP/HTTP_response_status_36_6.txt | -Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/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-... | |
Mmdn_HTTP/HTTP_headers_37_4.txt | 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-Host ` ](/en-US/d... | |
Mmdn_HTTP/HTTP_headers_29_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/... | |
Mmdn_HTTP/HTTP_headers_27_8.txt | ay result in this header being set, and the
login status being stored by the browser.
See [ Update login status using the Login Status API ](/en-
US/docs/Web/API/FedCM_API/IDP_integration#update_login_status_using_the_login_status_api)
for more information about FedCM login status.
Header type | [ Response header ]... | |
Mmdn_HTTP/HTTP_headers_2_3.txt | 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/Headers/Sec-CH-Prefers-Reduced-Motion) ... | |
Mmdn_HTTP/HTTP_headers_15_7.txt | 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-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers... | |
Mmdn_HTTP/HTTP_response_status_3_8.txt | s
# status.411 ](https://httpwg.org/specs/rfc9110.html#status.411)
## See also
* [ ` Content-Length ` ](/en-US/docs/Web/HTTP/Headers/Content-Length)
* [ ` Transfer-Encoding ` ](/en-US/docs/Web/HTTP/Headers/Transfer-Encoding)
## Help improve MDN
Was this page helpful to you?
Yes No
[ Learn how to co... | |
Mmdn_HTTP/HTTP_headers_3_5.txt | ` ](/en-US/docs/Web/HTTP/Status/416)
39. [ ` 417 Expectation Failed ` ](/en-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/4... | |
Mmdn_HTTP/Header_Field_Definitions_45_0.txt | ### 14.36 Referer
The Referer[sic] request-header field allows the client to specify, for the
server's benefit, the address (URI) of the resource from which the Request-URI
was obtained (the "referrer", although the header field is misspelled.) The
Referer request-header allows a server to generate lists of back-lin... | |
Mmdn_HTTP/HTTP_headers_22_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_3_6.txt | cs/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. [ ` CSP: trusted-types ` ](/en-US/docs/Web/HTTP... | |
Mmdn_HTTP/HTTP_response_status_8_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/HTTP_headers_26_3.txt | try-After ` ](/en-US/docs/Web/HTTP/Headers/Retry-After)
83. [ ` 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
... | |
Mmdn_HTTP/CSP_directives_16_4.txt | recated
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/... | |
Mmdn_HTTP/Permissions_Policy_directives_4_4.txt | on-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
134. [ ` 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-O... | |
Mmdn_HTTP/HTTP_headers_29_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... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.