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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support YesIE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support

See also

Document Tags and Contributors

Contributors to this page: JLHwung, fscholz, teoli
Last updated by: JLHwung,