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CURLOPT_PROXYHEADER(3)              libcurl             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'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),

ibcurl 8.1.2                    April 26, 2023          CURLOPT_PROXYHEADER(3)

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