42 lines
1.8 KiB
D
42 lines
1.8 KiB
D
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Long: header
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Short: H
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Arg: <header/@file>
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Help: Pass custom header(s) to server
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Protocols: HTTP
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---
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Extra header to include in the request when sending HTTP to a server. You may
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specify any number of extra headers. Note that if you should add a custom
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header that has the same name as one of the internal ones curl would use, your
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externally set header will be used instead of the internal one. This allows
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you to make even trickier stuff than curl would normally do. You should not
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replace internally set headers without knowing perfectly well what you're
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doing. Remove an internal header by giving a replacement without content on
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the right side of the colon, as in: -H \&"Host:". If you send the custom
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header with no-value then its header must be terminated with a semicolon, such
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as \-H \&"X-Custom-Header;" to send "X-Custom-Header:".
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curl will make sure that each header you add/replace is sent with the proper
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end-of-line marker, you should thus \fBnot\fP add that as a part of the header
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content: do not add newlines or carriage returns, they will only mess things up
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for you.
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Starting in 7.55.0, this option can take an argument in @filename style, which
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then adds a header for each line in the input file. Using @- will make curl
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read the header file from stdin.
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See also the --user-agent and --referer options.
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Starting in 7.37.0, you need --proxy-header to send custom headers intended
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for a proxy.
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Example:
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curl -H "X-First-Name: Joe" http://example.com/
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\fBWARNING\fP: headers set with this option will be set in all requests - even
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after redirects are followed, like when told with --location. This can lead to
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the header being sent to other hosts than the original host, so sensitive
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headers should be used with caution combined with following redirects.
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This option can be used multiple times to add/replace/remove multiple headers.
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