What are the filed in the header whi开发者_StackOverflowch will be always present [99% atleast] and can not be altered ?
According to w3.org this header fields is not modifiable by javascript:
- Accept-Charset
- Accept-Encoding
- Connection
- Content-Length
- Cookie
- Cookie2
- Content-Transfer-Encoding
- Date
- Expect
- Host
- Keep-Alive
- Referer
- TE
- Trailer
- Transfer-Encoding
- Upgrade
- User-Agent
- Via
- Proxy-*
- Sec-*
The request. Everything else is optional. Host header is mandatory if using HTTP/1.1.
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
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