curl/docs/libcurl/opts/CURLOPT_PROXYHEADER.md
Daniel Stenberg e3fe020089
docs/libcurl: generate PROTOCOLS from meta-data
Remove the PROTOCOLS section from the source files completely and
instead generate them based on the header data in the curldown files.

It also generates TLS backend information for options marked for TLS as
protocol.

Closes #13175
2024-03-23 18:13:03 +01:00

79 lines
1.7 KiB
Markdown

---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_PROXYHEADER
Section: 3
Source: libcurl
See-also:
- CURLOPT_HEADEROPT (3)
- CURLOPT_HTTPHEADER (3)
Protocol:
- All
---
# NAME
CURLOPT_PROXYHEADER - set of HTTP headers to pass to proxy
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYHEADER,
struct curl_slist *headers);
~~~
# DESCRIPTION
Pass a pointer to a linked list of HTTP headers to pass in your HTTP request
sent to a proxy. The rules for this list is identical to the
CURLOPT_HTTPHEADER(3) option's.
The headers set with this option is only ever used in requests sent to a proxy
- when there is also a request sent to a host.
The first line in a request (containing the method, usually a GET or POST) is
NOT a header and cannot be replaced using this option. Only the lines
following the request-line are headers. Adding this method line in this list
of headers causes your request to send an invalid header.
Pass a NULL to this to reset back to no custom headers.
# DEFAULT
NULL
# EXAMPLE
~~~c
int main(void)
{
CURL *curl = curl_easy_init();
struct curl_slist *list;
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy.example.com:80");
list = curl_slist_append(NULL, "Shoesize: 10");
list = curl_slist_append(list, "Accept:");
curl_easy_setopt(curl, CURLOPT_PROXYHEADER, list);
curl_easy_perform(curl);
curl_slist_free_all(list); /* free the list again */
}
}
~~~
# AVAILABILITY
Added in 7.37.0
# RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.