CURLOPT_PROXYHEADER(3) Library Functions Manual CURLOPT_PROXYHEADER(3)
NAME
CURLOPT_PROXYHEADER - set of HTTP headers to pass to proxy
SYNOPSIS
#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.
Using this option multiple times makes the last set list override the
previous ones. Set it to NULL to disable its use again.
libcurl does not copy the list, it needs to be kept around until after
the transfer has completed.
DEFAULT
NULL
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
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 curl 7.37.0
RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred,
see libcurl-errors(3).
SEE ALSO
CURLOPT_HEADEROPT(3), CURLOPT_HTTPHEADER(3)
libcurl 2025-02-08 CURLOPT_PROXYHEADER(3)
curl 8.12.0 - Generated Mon Feb 17 18:55:27 CST 2025