目录搜索
GuidesAccess control CORSAuthenticationBrowser detection using the user agentCachingCaching FAQCompressionConditional requestsConnection management in HTTP 1.xContent negotiationContent negotiation: List of default Accept valuesCookiesCSPMessagesOverviewProtocol upgrade mechanismProxy servers and tunnelingProxy servers and tunneling: Proxy Auto-Configuration (PAC) filePublic Key PinningRange requestsRedirectionsResources and specificationsResources and URIsResponse codesServer-Side Access ControlSessionGuides: BasicsBasics of HTTPChoosing between www and non-www URLsData URIsEvolution of HTTPIdentifying resources on the WebMIME TypesMIME types: Complete list of MIME typesCSPContent-Security-PolicyContent-Security-Policy-Report-OnlyCSP: base-uriCSP: block-all-mixed-contentCSP: child-srcCSP: connect-srcCSP: default-srcCSP: font-srcCSP: form-actionCSP: frame-ancestorsCSP: frame-srcCSP: img-srcCSP: manifest-srcCSP: media-srcCSP: object-srcCSP: plugin-typesCSP: referrerCSP: report-uriCSP: require-sri-forCSP: sandboxCSP: script-srcCSP: style-srcCSP: upgrade-insecure-requestsCSP: worker-srcHeadersAcceptAccept-CharsetAccept-EncodingAccept-LanguageAccept-RangesAccess-Control-Allow-CredentialsAccess-Control-Allow-HeadersAccess-Control-Allow-MethodsAccess-Control-Allow-OriginAccess-Control-Expose-HeadersAccess-Control-Max-AgeAccess-Control-Request-HeadersAccess-Control-Request-MethodAgeAllowAuthorizationCache-ControlConnectionContent-DispositionContent-EncodingContent-LanguageContent-LengthContent-LocationContent-RangeContent-TypeCookieCookie2DateDNTETagExpectExpiresForwardedFromHeadersHostIf-MatchIf-Modified-SinceIf-None-MatchIf-RangeIf-Unmodified-SinceKeep-AliveLarge-AllocationLast-ModifiedLocationOriginPragmaProxy-AuthenticateProxy-AuthorizationPublic-Key-PinsPublic-Key-Pins-Report-OnlyRangeRefererReferrer-PolicyRetry-AfterServerSet-CookieSet-Cookie2SourceMapStrict-Transport-SecurityTETkTrailerTransfer-EncodingUpgrade-Insecure-RequestsUser-AgentUser-Agent: FirefoxVaryViaWarningWWW-AuthenticateX-Content-Type-OptionsX-DNS-Prefetch-ControlX-Forwarded-ForX-Forwarded-HostX-Forwarded-ProtoX-Frame-OptionsX-XSS-ProtectionMethodsCONNECTDELETEGETHEADMethodsOPTIONSPATCHPOSTPUTStatus100 Continue101 Switching Protocols200 OK201 Created202 Accepted203 Non-Authoritative Information204 No Content205 Reset Content206 Partial Content300 Multiple Choices301 Moved Permanently302 Found303 See Other304 Not Modified307 Temporary Redirect308 Permanent Redirect400 Bad Request401 Unauthorized403 Forbidden404 Not Found405 Method Not Allowed406 Not Acceptable407 Proxy Authentication Required408 Request Timeout409 Conflict410 Gone411 Length Required412 Precondition Failed413 Payload Too Large414 URI Too Long415 Unsupported Media Type416 Range Not Satisfiable417 Expectation Failed426 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 Supported511 Network Authentication RequiredStatus
文字

Host请求报头指定的服务器的域名(虚拟主机),和(可选地)的 TCP 端口上哪个服务器正在侦听数。

如果没有给出端口,则暗示所请求服务的默认端口(例如,HTTP URL 为“80”)。

Host头字段必须在所有 HTTP / 1.1 请求消息被发送。一个400(错误请求)状态码将被发送到任何缺少Host头字段或包含多个 HTTP / 1.1 请求消息。

Header type

Request header

Forbidden header name

yes

语法

Host: <host>:<port>

指令

<host> 服务器的域名(用于虚拟主机)。<port> 服务器正在侦听的可选 TCP 端口号。

例子

Host: developer.cdn.mozilla.net

规范

Specification

Title

RFC 7230, section 5.4: Host

Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing

浏览器兼容性

Feature

Chrome

Edge

Firefox

Internet Explorer

Opera

Safari

Basic Support

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

Feature

Android

Chrome for Android

Edge mobile

Firefox for Android

IE mobile

Opera Android

iOS Safari

Basic Support

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

(Yes)

上一篇:下一篇: