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HTTP definiert eine Reihe von Anfragemethoden, um den Zweck der Anfrage anzugeben und was erwartet wird, wenn die Anfrage erfolgreich ist. Obwohl sie auch Substantive sein knnen, werden diese Anfragemethoden manchmal als HTTP-Verben bezeichnet. Jede Anfragemethode hat ihre eigenen Semantiken, aber einige Eigenschaften werden ber mehrere Methoden hinweg geteilt. Insbesondere knnen Anfragemethoden sicher, idempotent oder cacheable sein.
GETDie GET-Methode fordert eine Darstellung der angegebenen Ressource an.
Anfragen, die GET verwenden, sollten nur Daten abrufen und keinen Anfrage-Inhalt enthalten.
HEADDie HEAD-Methode verlangt eine Antwort, die mit einer GET-Anfrage identisch ist, jedoch ohne Antwortkrper.
POSTDie POST-Methode bermittelt eine Entitt an die angegebene Ressource, was oft eine Zustandsnderung oder Nebeneffekte auf dem Server verursacht.
PUTDie PUT-Methode ersetzt alle aktuellen Darstellungen der Zielressource durch den Anfrage-Inhalt.
DELETEDie DELETE-Methode lscht die angegebene Ressource.
CONNECTDie CONNECT-Methode etabliert einen Tunnel zum vom Zielressource identifizierten Server.
OPTIONSDie OPTIONS-Methode beschreibt die Kommunikationsoptionen fr die Zielressource.
TRACEDie TRACE-Methode fhrt einen Nachrichtenschleifen-Test entlang des Pfads zur Zielressource durch.
PATCHDie PATCH-Methode wendet partielle Modifikationen auf eine Ressource an.
Die folgende Tabelle listet HTTP-Anfragemethoden und deren Kategorisierung in Bezug auf Sicherheit, Cachefhigkeit und Idempotenz auf.
| Methode | Sicher | Idempotent | Cachefhig |
|---|---|---|---|
GET |
Ja | Ja | Ja |
HEAD |
Ja | Ja | Ja |
OPTIONS |
Ja | Ja | Nein |
TRACE |
Ja | Ja | Nein |
PUT |
Nein | Ja | Nein |
DELETE |
Nein | Ja | Nein |
POST |
Nein | Nein | Bedingt* |
PATCH |
Nein | Nein | Bedingt* |
CONNECT |
Nein | Nein | Nein |
* POST und PATCH sind cachefhig, wenn Antworten explizit Frische-Informationen und einen passenden Content-Location-Header enthalten.
| Spezifikation |
|---|
| HTTP Semantics # PUT |
| HTTP Semantics # POST |
| HTTP Semantics # CONNECT |
| HTTP Semantics # HEAD |
| HTTP Semantics # DELETE |
| HTTP Semantics # OPTIONS |
| HTTP Semantics # GET |
Reason: CORS disabledReason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'Reason: CORS header 'Access-Control-Allow-Origin' missingReason: CORS header 'Origin' cannot be addedReason: CORS preflight channel did not succeedReason: CORS request did not succeedReason: CORS request external redirect not allowedReason: CORS request not HTTPReason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*'Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channelReason: Multiple CORS header 'Access-Control-Allow-Origin' not allowedAcceptAccept-CHAccept-EncodingAccept-LanguageAccept-PatchAccept-PostAccept-RangesAccess-Control-Allow-CredentialsAccess-Control-Allow-HeadersAccess-Control-Allow-MethodsAccess-Control-Allow-OriginAccess-Control-Expose-HeadersAccess-Control-Max-AgeAccess-Control-Request-HeadersAccess-Control-Request-MethodActivate-Storage-AccessAgeAllowAlt-SvcAlt-UsedAttribution-Reporting-EligibleAttribution-Reporting-Register-SourceAttribution-Reporting-Register-TriggerAuthorizationAvailable-DictionaryCache-ControlClear-Site-DataConnectionContent-DigestContent-DispositionContent-DPRContent-EncodingContent-LanguageContent-LengthContent-LocationContent-RangeContent-Security-PolicyContent-Security-Policy-Report-OnlyContent-TypeCookieCritical-CHCross-Origin-Embedder-PolicyCross-Origin-Embedder-Policy-Report-OnlyCross-Origin-Opener-PolicyCross-Origin-Resource-PolicyDateDevice-MemoryDictionary-IDDNTDownlinkDPREarly-DataECTETagExpectExpect-CTExpiresForwardedFromHostIdempotency-KeyIf-MatchIf-Modified-SinceIf-None-MatchIf-RangeIf-Unmodified-SinceIntegrity-PolicyIntegrity-Policy-Report-OnlyKeep-AliveLast-ModifiedLinkLocationMax-ForwardsNELNo-Vary-SearchObserve-Browsing-TopicsOriginOrigin-Agent-ClusterPermissions-PolicyPermissions-Policy-Report-OnlyPragmaPreferPreference-AppliedPriorityProxy-AuthenticateProxy-AuthorizationRangeRefererReferrer-PolicyRefreshReport-ToReporting-EndpointsRepr-DigestRetry-AfterRTTSave-DataSec-Browsing-TopicsSec-CH-Device-MemorySec-CH-DPRSec-CH-Prefers-Color-SchemeSec-CH-Prefers-Reduced-MotionSec-CH-Prefers-Reduced-TransparencySec-CH-UASec-CH-UA-ArchSec-CH-UA-BitnessSec-CH-UA-Form-FactorsSec-CH-UA-Full-VersionSec-CH-UA-Full-Version-ListSec-CH-UA-MobileSec-CH-UA-ModelSec-CH-UA-PlatformSec-CH-UA-Platform-VersionSec-CH-UA-WoW64Sec-CH-Viewport-HeightSec-CH-Viewport-WidthSec-CH-WidthSec-Fetch-DestSec-Fetch-ModeSec-Fetch-SiteSec-Fetch-Storage-AccessSec-Fetch-UserSec-GPCSec-Private-State-TokenSec-Private-State-Token-Crypto-VersionSec-Private-State-Token-LifetimeSec-PurposeSec-Redemption-RecordSec-Speculation-TagsSec-WebSocket-AcceptSec-WebSocket-ExtensionsSec-WebSocket-KeySec-WebSocket-ProtocolSec-WebSocket-VersionServerServer-TimingService-WorkerService-Worker-AllowedService-Worker-Navigation-PreloadSet-CookieSet-LoginSourceMapSpeculation-RulesStrict-Transport-SecuritySupports-Loading-ModeTETiming-Allow-OriginTkTrailerTransfer-EncodingUpgradeUpgrade-Insecure-RequestsUse-As-DictionaryUser-AgentVaryViaViewport-WidthWant-Content-DigestWant-Repr-DigestWarningWidthWWW-AuthenticateX-Content-Type-OptionsX-DNS-Prefetch-ControlX-Forwarded-ForX-Forwarded-HostX-Forwarded-ProtoX-Frame-OptionsX-Permitted-Cross-Domain-PoliciesX-Powered-ByX-Robots-TagX-XSS-Protection100 Continue101 Switching Protocols102 Processing103 Early Hints200 OK201 Created202 Accepted203 Non-Authoritative Information204 No Content205 Reset Content206 Partial Content207 Multi-Status208 Already Reported226 IM Used300 Multiple Choices301 Moved Permanently302 Found303 See Other304 Not Modified307 Temporary Redirect308 Permanent Redirect400 Bad Request401 Unauthorized402 Payment Required403 Forbidden404 Not Found405 Method Not Allowed406 Not Acceptable407 Proxy Authentication Required408 Request Timeout409 Conflict410 Gone411 Length Required412 Precondition Failed413 Content Too Large414 URI Too Long415 Unsupported Media Type416 Range Not Satisfiable417 Expectation Failed418 I'm a teapot421 Misdirected Request422 Unprocessable Content423 Locked424 Failed Dependency425 Too Early426 Upgrade Required428 Precondition Required429 Too Many Requests431 Request Header Fields Too Large451 Unavailable For Legal Reasons500 Internal Server Error501 Not Implemented502 Bad Gateway503 Service Unavailable504 Gateway Timeout505 HTTP Version Not Supported506 Variant Also Negotiates507 Insufficient Storage508 Loop Detected510 Not Extended511 Network Authentication 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