Origin request header indicates where a fetch originates from. It doesn't include any path information, but only the server name. It is sent with CORS requests, as well as with
POST requests. It is similar to the
Referer header, but, unlike this header, it doesn't disclose the whole path.
|Header type||Request header|
|Forbidden header name||yes|
Origin: null Origin: <scheme> "://" <hostname> [ ":" <port> ]
- The protocol that is used. Usually it is the HTTP protocol or its secured version, HTTPS.
- The domain name of the server (for virtual hosting) or the IP.
- <port> Optional
- TCP port number on which the server is listening. If no port is given, the default port for the service requested (e.g., "80" for an HTTP URL) is implied.
|RFC 6454, section 7: Origin||The Web Origin Concept|
The definition of 'Origin header' in that specification.
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