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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 ne- gotiations. 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 pre- vious 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 result; 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); result = 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 2026-06-11 CURLOPT_TELNETOPTIONS(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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