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The HTTP CONNECT method method starts two-way communications with the requested resource. It can be used to open a tunnel.

For example, the CONNECT method can be used to access websites that use SSL (HTTPS). The client asks an HTTP Proxy server to tunnel the TCP connection to the desired destination. The server then proceeds to make the connection on behalf of the client. Once the connection has been established by the server, the Proxy server continues to proxy the TCP stream to and from the client.

CONNECT is a hop-by-hop method.

Request has body No
Successful response has body Yes
Safe No
Idempotent No
Cacheable No
Allowed in HTML forms No

Syntax

CONNECT www.example.com:443 HTTP/1.1

Example

Some proxy servers might need authority to create a tunnel. See also the Proxy-Authorization header.

CONNECT server.example.com:80 HTTP/1.1 
Host: server.example.com:80 
Proxy-Authorization: basic aGVsbG86d29ybGQ=

Specifications

Specification Title
RFC 7231, section 4.3.6: CONNECT Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes Yes Yes Yes Yes

See also

Schlagwörter des Dokuments und Mitwirkende

Schlagwörter: 
Mitwirkende an dieser Seite: JLHwung, fscholz, teoli
Zuletzt aktualisiert von: JLHwung,