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 CURLOPT_PROXYHEADER 3 "May 30, 2017" "libcurl 7.73.0" "curl_easy_setopt options"


 NAME
CURLOPT_PROXYHEADER - custom 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's 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 will only cause your request to send an invalid header.

Pass a NULL to this to reset back to no custom headers.

 DEFAULT
NULL

 PROTOCOLS
HTTP

 EXAMPLE
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.

 "SEE ALSO"
 CURLOPT_HEADEROPT "(3), " CURLOPT_HTTPHEADER "(3), "