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CURLOPT_TELNETOPTIONS(3)   Library Functions Manual   CURLOPT_TELNETOPTIONS(3)


NAME

       CURLOPT_TELNETOPTIONS - set of telnet options


SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TELNETOPTIONS,
                                 struct curl_slist *cmds);


DESCRIPTION

       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.

       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 telnet only


EXAMPLE

       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);
         }
       }


AVAILABILITY

       Added in curl 7.7


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_HTTPHEADER(3), CURLOPT_QUOTE(3)

libcurl                           2025-02-08          CURLOPT_TELNETOPTIONS(3)

curl 8.12.0 - Generated Wed Feb 19 09:36:33 CST 2025
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