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.\" **************************************************************************
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.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.\" * are also available at https://curl.se/docs/copyright.html.
.\" *
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.\" * copies of the Software, and permit persons to whom the Software is
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.\"
.TH CURLOPT_TELNETOPTIONS 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
.SH NAME
CURLOPT_TELNETOPTIONS \- custom telnet options
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TELNETOPTIONS,
                          struct curl_slist *cmds);
.SH 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.
.SH DEFAULT
NULL
.SH PROTOCOLS
TELNET
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  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);
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
  curl_slist_free_all(options);
}
.fi
.SH AVAILABILITY
Along with TELNET
.SH RETURN VALUE
Returns CURLE_OK if TELNET is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_HTTPHEADER "(3), " CURLOPT_QUOTE "(3), "