Long: proxy-header
-Arg: <header>
-Help: Pass custom header LINE to proxy
+Arg: <header/@file>
+Help: Pass custom header(s) to proxy
Protocols: HTTP
Added: 7.37.0
---
Headers specified with this option will not be included in requests that curl
knows will not be sent to a proxy.
+Starting in 7.55.0, this option can take an argument in @filename style, which
+then adds a header for each line in the input file. Using @- will make curl
+read the header file from stdin.
+
This option can be used multiple times to add/replace/remove multiple headers.