CURLOPT_PROXY_TRANSFER_MODE(3)                        Library Functions Manual

NAME
       CURLOPT_PROXY_TRANSFER_MODE - append FTP transfer mode to URL for proxy

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_TRANSFER_MODE,
                                 long enabled);

DESCRIPTION
       Pass a long. If the value is set to 1 (one), it tells libcurl to set
       the transfer mode (binary or ASCII) for FTP transfers done via an HTTP
       proxy, by appending ;type=a or ;type=i to the URL. Without this
       setting, or it being set to 0 (zero, the default),
       CURLOPT_TRANSFERTEXT(3) has no effect when doing FTP via a proxy.
       Beware that not all proxies support this feature.

DEFAULT
       0, disabled

PROTOCOLS
       All

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL,
                            "ftp://example.com/old-server/file.txt");
           curl_easy_setopt(curl, CURLOPT_PROXY, "http://localhost:80");
           curl_easy_setopt(curl, CURLOPT_PROXY_TRANSFER_MODE, 1L);
           curl_easy_setopt(curl, CURLOPT_TRANSFERTEXT, 1L);
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in 7.18.0

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
       if the enabled value is not supported.

SEE ALSO
       CURLOPT_CRLF(3), CURLOPT_HTTPPROXYTUNNEL(3), CURLOPT_PROXY(3),
       CURLOPT_TRANSFERTEXT(3)

libcurl                          April 26 2024  CURLOPT_PROXY_TRANSFER_MODE(3)