CURLOPT_TELNETOPTIONS(3) Library Functions Manual CURLOPT_TELNETOPTIONS(3)

CURLOPT_TELNETOPTIONS - set of telnet options

#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TELNETOPTIONS,
                          struct curl_slist *cmds);

Provide a pointer to a curl_slist with variables to pass to the telnet negotiations. The variables should be in the format <option=value>. libcurl supports the options TTYPE, XDISPLOC and NEW_ENV. See the TELNET standard for details.

NULL

TELNET

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    struct curl_slist *options;
    options = curl_slist_append(NULL, "TTTYPE=vt100");
    options = curl_slist_append(options, "USER=foobar");
    curl_easy_setopt(curl, CURLOPT_URL, "telnet://example.com/");
    curl_easy_setopt(curl, CURLOPT_TELNETOPTIONS, options);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
    curl_slist_free_all(options);
  }
}

Along with TELNET

Returns CURLE_OK if TELNET is supported, and CURLE_UNKNOWN_OPTION if not.

CURLOPT_HTTPHEADER(3), CURLOPT_QUOTE(3)

2024-05-22 libcurl