| Long: header |
| Short: H |
| Arg: <header/@file> |
| Help: Pass custom header(s) to server |
| Protocols: HTTP |
| Category: http |
| See-also: user-agent referer |
| Example: -H "X-First-Name: Joe" $URL |
| Example: -H "User-Agent: yes-please/2000" $URL |
| Example: -H "Host:" $URL |
| Added: 5.0 |
| --- |
| Extra header to include in the request when sending HTTP to a server. You may |
| specify any number of extra headers. Note that if you should add a custom |
| header that has the same name as one of the internal ones curl would use, your |
| externally set header will be used instead of the internal one. This allows |
| you to make even trickier stuff than curl would normally do. You should not |
| replace internally set headers without knowing perfectly well what you are |
| doing. Remove an internal header by giving a replacement without content on |
| the right side of the colon, as in: -H \&"Host:". If you send the custom |
| header with no-value then its header must be terminated with a semicolon, such |
| as \-H \&"X-Custom-Header;" to send "X-Custom-Header:". |
| |
| curl will make sure that each header you add/replace is sent with the proper |
| end-of-line marker, you should thus **not** add that as a part of the header |
| content: do not add newlines or carriage returns, they will only mess things |
| up for you. |
| |
| 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. Added in 7.55.0. |
| |
| You need --proxy-header to send custom headers intended for a HTTP |
| proxy. Added in 7.37.0. |
| |
| Passing on a "Transfer-Encoding: chunked" header when doing a HTTP request |
| with a request body, will make curl send the data using chunked encoding. |
| |
| **WARNING**: headers set with this option will be set in all requests - even |
| after redirects are followed, like when told with --location. This can lead to |
| the header being sent to other hosts than the original host, so sensitive |
| headers should be used with caution combined with following redirects. |
| |
| This option can be used multiple times to add/replace/remove multiple headers. |
