index.md

---

title: CONNECT
slug: Web/HTTP/Methods/CONNECT
browser-compat: http.methods.CONNECT

---

{{HTTPSidebar}}

The HTTP CONNECT 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 {{Glossary("SSL")}} ({{Glossary("HTTPS")}}). The client asks an HTTP {{Glossary("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 {{Glossary("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	No
{{Glossary("Safe/HTTP", "Safe")}}	No
{{Glossary("Idempotent")}}	No
{{Glossary("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 {{HTTPHeader("Proxy-Authorization")}} header.

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{Glossary("Proxy server")}}

• {{HTTPHeader("Proxy-Authorization")}}