Table of Contents
CSP
Content-Security-Policy
Content-Security-Policy-Report-Only
CSP: base-uri
CSP: block-all-mixed-content
CSP: child-src
CSP: connect-src
CSP: default-src
CSP: font-src
CSP: form-action
CSP: frame-ancestors
CSP: frame-src
CSP: img-src
CSP: manifest-src
CSP: media-src
CSP: navigate-to
CSP: object-src
CSP: plugin-types
CSP: prefetch-src
CSP: referrer
CSP: report-to
CSP: report-uri
CSP: require-sri-for
CSP: require-trusted-types-for
CSP: sandbox
CSP: script-src
CSP: script-src-attr
CSP: script-src-elem
CSP: style-src
CSP: style-src-attr
CSP: style-src-elem
CSP: trusted-types
CSP: upgrade-insecure-requests
CSP: worker-src
Guides
Authentication
Browser detection using the user agent
Caching
Compression
Conditional requests
Connection management in HTTP 1.x
Content negotiation
Content negotiation: List of default Accept values
Cookies
CORS
Cross-Origin Resource Policy (CORP)
CSP
Errors
Errors: CORSAllowOriginNotMatchingOrigin
Errors: CORSDidNotSucceed
Errors: CORSDisabled
Errors: CORSExternalRedirectNotAllowed
Errors: CORSInvalidAllowHeader
Errors: CORSInvalidAllowMethod
Errors: CORSMethodNotFound
Errors: CORSMIssingAllowCredentials
Errors: CORSMissingAllowHeaderFromPreflight
Errors: CORSMissingAllowOrigin
Errors: CORSMultipleAllowOriginNotAllowed
Errors: CORSNotSupportingCredentials
Errors: CORSOriginHeaderNotAdded
Errors: CORSPreflightDidNotSucceed
Errors: CORSRequestNotHttp
Feature Policy
Feature Policy: Using Feature Policy
Messages
Network Error Logging
Overview
Protocol upgrade mechanism
Proxy servers and tunneling
Proxy servers and tunneling: Proxy Auto-Configuration PAC file
Public Key Pinning
Session
Guides: Basics
Data URIs
Evolution of HTTP
Identifying resources on the Web
MIME types
MIME types: Common types
Headers
Accept
Accept (RFC 2616)
Accept (RFC 7231)
Accept-CH
Accept-CH-Lifetime
Accept-Charset (RFC 2616)
Accept-Charset (RFC 7231)
Accept-Encoding
Accept-Encoding (RFC 2616)
Accept-Encoding (RFC 7231)
Accept-Language
Accept-Language (RFC 2616)
Accept-Language (RFC 7231)
Accept-Patch
Accept-Post
Accept-Ranges
Accept-Ranges (RFC 2616)
Access-Control-Allow-Credentials
Access-Control-Allow-Headers
Access-Control-Allow-Methods
Access-Control-Allow-Origin
Access-Control-Expose-Headers
Access-Control-Max-Age
Access-Control-Request-Headers
Access-Control-Request-Method
Age
Age (RFC 2616)
Age (RFC 7234)
Allow
Allow (RFC 2616)
Allow (RFC 7231)
Alt-Svc
Authorization
Authorization (RFC 2616)
Authorization (RFC 7235)
Cache-Control
Cache-Control (RFC 2616)
Cache-Control (RFC 7234)
Clear-Site-Data
Connection
Connection (RFC 2616)
Content-Disposition
Content-DPR
Content-Encoding
Content-Encoding (RFC 2616)
Content-Language
Content-Language (RFC 2616)
Content-Length
Content-Length (RFC 2616)
Content-Location
Content-Location (RFC 2616)
Content-MD5 (RFC 2616)
Content-Range
Content-Range (RFC 2616)
Content-Type
Content-Type (RFC 2616)
Cookie
Cookie2
Cross-Origin-Embedder-Policy
Cross-Origin-Opener-Policy
Cross-Origin-Resource-Policy
Date
Date (RFC 2616)
Device-Memory
DNT
Downlink
DPR
Early-Data
ECT
ETag
ETag (RFC 2616)
Expect
Expect (RFC 2616)
Expect (RFC 7231)
Expect-CT
Expires
Expires (RFC 2616)
Expires (RFC 7234)
Feature-Policy
Feature-Policy: accelerometer
Feature-Policy: ambient-light-sensor
Feature-Policy: autoplay
Feature-Policy: battery
Feature-Policy: camera
Feature-Policy: display-capture
Feature-Policy: document-domain
Feature-Policy: encrypted-media
Feature-Policy: fullscreen
Feature-Policy: gamepad
Feature-Policy: geolocation
Feature-Policy: gyroscope
Feature-Policy: layout-animations
Feature-Policy: legacy-image-formats
Feature-Policy: magnetometer
Feature-Policy: microphone
Feature-Policy: midi
Feature-Policy: oversized-images
Feature-Policy: payment
Feature-Policy: picture-in-picture
Feature-Policy: publickey-credentials-get
Feature-Policy: screen-wake-lock
Feature-Policy: speaker-selection
Feature-Policy: sync-xhr
Feature-Policy: unoptimized-images
Feature-Policy: unsized-media
Feature-Policy: usb
Feature-Policy: vibrate
Feature-Policy: vr
Feature-Policy: web-share
Feature-Policy: xr-spatial-tracking
Forwarded
From
From (RFC 2616)
From (RFC 7231)
Headers
Host
Host (RFC 2616)
If-Match
If-Match (RFC 2616)
If-Match (RFC 7232)
If-Modified-Since
If-Modified-Since (RFC 2616)
If-Modified-Since (RFC 7232)
If-None-Match
If-None-Match (RFC 2616)
If-None-Match (RFC 7232)
If-Range
If-Range (RFC 2616)
If-Range (RFC 7232)
If-Unmodified-Since
If-Unmodified-Since (RFC 2616)
If-Unmodified-Since (RFC 7232)
Keep-Alive
Large-Allocation
Last-Modified
Last-Modified (RFC 2616)
Link
Location
Location (RFC 2616)
Location (RFC 7231)
Max-Forwards (RFC 2616)
Max-Forwards (RFC 7231)
NEL
Origin
Pragma
Pragma (RFC 2616)
Pragma (RFC 7234)
Proxy-Authenticate
Proxy-Authenticate (RFC 2616)
Proxy-Authenticate (RFC 7235)
Proxy-Authorization
Proxy-Authorization (RFC 2616)
Proxy-Authorization (RFC 7235)
Public-Key-Pins
Public-Key-Pins-Report-Only
Quality Values (RFC 7231)
Range
Range (RFC 2616)
Referer
Referer (RFC 2616)
Referer (RFC 7231)
Referrer-Policy
Retry-After
Retry-After (RFC 2616)
Retry-After (RFC 7231)
RTT
Save-Data
Sec-Fetch-Dest
Sec-Fetch-Mode
Sec-Fetch-Site
Sec-Fetch-User
Sec-WebSocket-Accept
Server
Server (RFC 2616)
Server (RFC 7231)
Server-Timing
Set-Cookie
Set-Cookie2
Set-Cookie: SameSite
SourceMap
Strict-Transport-Security
TE
TE (RFC 2616)
Timing-Allow-Origin
Tk
Trailer
Trailer (RFC 2616)
Transfer-Encoding
Transfer-Encoding (RFC 2616)
Upgrade
Upgrade (RFC 2616)
Upgrade-Insecure-Requests
User-Agent
User-Agent (RFC 2616)
User-Agent (RFC 7231)
User-Agent: Firefox
Vary
Vary (RFC 2616)
Vary (RFC 7231)
Via
Via (RFC 2616)
Viewport-Width
Warning
Warning (RFC 2616)
Warning (RFC 7234)
Width
WWW-Authenticate
WWW-Authenticate (RFC 2616)
WWW-Authenticate (RFC 7235)
X-Content-Type-Options
X-DNS-Prefetch-Control
X-Forwarded-For
X-Forwarded-Host
X-Forwarded-Proto
X-Frame-Options
X-XSS-Protection
Methods
Cacheable Methods (RFC 7231)
CONNECT
CONNECT (RFC 7231)
DELETE
DELETE (RFC 7231)
GET
GET (RFC 7231)
HEAD
HEAD (RFC 7231)
Idempotent Methods (RFC 7231)
Methods
OPTIONS
OPTIONS (RFC 7231)
PATCH
POST
POST (RFC 7231)
PUT
PUT (RFC 7231)
Safe Methods (RFC 7231)
TRACE
TRACE (RFC 7231)
RFC 2616: HTTP/1.1
Access Authentication (RFC 2616)
Caching in HTTP (RFC 2616)
Connections (RFC 2616)
Content Negotiation (RFC 2616)
Entity (RFC 2616)
HTTP Message (RFC 2616)
Method Definitions (RFC 2616)
Protocol Parameters (RFC 2616)
Request (RFC 2616)
Response (RFC 2616)
RFC 2616: HTTP/1.1
Security Considerations (RFC 2616)
Status Code Definitions (RFC 2616)
RFC 4918: WebDAV
RFC 4918: WebDAV
RFC 5023: The Atom Publishing Protocol
RFC 5023: The Atom Publishing Protocol
RFC 7230: Message Syntax and Routing
ABNF List Extension: #rule (RFC 7230)
Architecture (RFC 7230)
Connection Management (RFC 7230)
IANA Considerations (RFC 7230)
Message Format (RFC 7230)
Message Routing (RFC 7230)
RFC 7230: Message Syntax and Routing
Security Considerations (RFC 7230)
Transfer Codings (RFC 7230)
RFC 7231: Semantics and Content
IANA Considerations (RFC 7231)
Representations (RFC 7231)
RFC 7231: Semantics and Content
Security Considerations (RFC 7231)
RFC 7232: Conditional Requests
ETag (RFC 7232)
Evaluation (RFC 7232)
IANA Considerations (RFC 7232)
Last-Modified (RFC 7232)
Precedence (RFC 7232)
RFC 7232: Conditional Requests
Security Considerations (RFC 7232)
Weak versus Strong (RFC 7232)
When to Use Entity-Tags and Last-Modified Dates (RFC 7232)
RFC 7233: Range Requests
Accept-Ranges (RFC 7233)
Byte Ranges (RFC 7233)
Combining Ranges (RFC 7233)
Content-Range (RFC 7233)
IANA Considerations (RFC 7233)
If-Range (RFC 7233)
Other Range Units (RFC 7233)
Range (RFC 7233)
RFC 7233: Range Requests
Security Considerations (RFC 7233)
RFC 7234: Caching
Calculating Secondary Keys with Vary (RFC 7234)
Freshness (RFC 7234)
History Lists (RFC 7234)
IANA Considerations (RFC 7234)
Invalidation (RFC 7234)
RFC 7234: Caching
Security Considerations (RFC 7234)
Storing Responses in Caches (RFC 7234)
Validation (RFC 7234)
RFC 7235: Authentication
Access Authentication Framework (RFC 7235)
IANA Considerations (RFC 7235)
RFC 7235: Authentication
Security Considerations (RFC 7235)
RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2)
Additional HTTP Requirements/Considerations (RFC 7540)
Error Codes (RFC 7540)
Frame Definitions (RFC 7540)
HTTP Frames (RFC 7540)
HTTP Message Exchanges (RFC 7540)
IANA Considerations (RFC 7540)
RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2)
Security Considerations (RFC 7540)
Starting HTTP/2 (RFC 7540)
Streams and Multiplexing (RFC 7540)
Status
100 Continue
100 Continue (RFC 7231)
101 Switching Protocols
101 Switching Protocols (RFC 7231)
103 Early Hints
200 OK
200 OK (RFC 7231)
201 Created
201 Created (RFC 7231)
202 Accepted
202 Accepted (RFC 7231)
203 Non-Authoritative Information
203 Non-Authoritative Information (RFC 7231)
204 No Content
204 No Content (RFC 7231)
205 Reset Content
205 Reset Content (RFC 7231)
206 Partial Content
206 Partial Content (RFC 7233)
207 Multi-Status (RFC 4918)
300 Multiple Choices
300 Multiple Choices (RFC 7231)
301 Moved Permanently
301 Moved Permanently (RFC 7231)
302 Found
302 Found (RFC 7231)
303 See Other
303 See Other (RFC 7231)
304 Not Modified
304 Not Modified (RFC 7232)
305 Use Proxy (RFC 7231)
306 (Unused) (RFC 7231)
307 Temporary Redirect
307 Temporary Redirect (RFC 7231)
308 Permanent Redirect
400 Bad Request
400 Bad Request (RFC 7231)
401 Unauthorized
401 Unauthorized (RFC 7235)
402 Payment Required
402 Payment Required (RFC 7231)
403 Forbidden
403 Forbidden (RFC 7231)
404 Not Found
404 Not Found (RFC 7231)
405 Method Not Allowed
405 Method Not Allowed (RFC 7231)
406 Not Acceptable
406 Not Acceptable (RFC 7231)
407 Proxy Authentication Required
407 Proxy Authentication Required (RFC 7235)
408 Request Timeout
408 Request Timeout (RFC 7231)
409 Conflict
409 Conflict (RFC 7231)
410 Gone
410 Gone (RFC 7231)
411 Length Required
411 Length Required (RFC 7231)
412 Precondition Failed
412 Precondition Failed (RFC 7232)
413 Payload Too Large
413 Payload Too Large (RFC 7231)
414 URI Too Long
414 URI Too Long (RFC 7231)
415 Unsupported Media Type
415 Unsupported Media Type (RFC 7231)
416 Range Not Satisfiable
416 Range Not Satisfiable (RFC 7233)
417 Expectation Failed
417 Expectation Failed (RFC 7231)
418 I'm a teapot
422 Unprocessable Entity
422 Unprocessable Entity (RFC 4918)
423 Locked (RFC 4918)
424 Failed Dependency (RFC 4918)
425 Too Early
426 Upgrade Required
426 Upgrade Required (RFC 7231)
428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
451 Unavailable For Legal Reasons
500 Internal Server Error
500 Internal Server Error (RFC 7231)
501 Not Implemented
501 Not Implemented (RFC 7231)
502 Bad Gateway
502 Bad Gateway (RFC 7231)
503 Service Unavailable
503 Service Unavailable (RFC 7231)
504 Gateway Timeout
504 Gateway Timeout (RFC 7231)
505 HTTP Version Not Supported
505 HTTP Version Not Supported (RFC 7231)
506 Variant Also Negotiates
507 Insufficient Storage
507 Insufficient Storage (RFC 4918)
508 Loop Detected
510 Not Extended
511 Network Authentication Required
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