## NAME

CURLOPT_CONNECT_ONLY - stop when connected to target server

## SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONNECT_ONLY, long only);

## DESCRIPTION

Pass a long. If the parameter equals 1, it tells the library to perform all the required proxy authentication and connection setup, but no data transfer, and then return.

The option can be used to simply test a connection to a server, but is more useful when used with the CURLINFO_LASTSOCKET option to curl_easy_getinfo(3) as the library can set up the connection and then the application can obtain the most recently used socket for special data transfers.

## DEFAULT

0

## PROTOCOLS

HTTP, SMTP, POP3 and IMAP

## EXAMPLE

TODO

## AVAILABILITY

Added in 7.15.2

## RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

## SEE ALSO

CURLOPT_VERBOSE, CURLOPT_HTTPPROXYTUNNEL

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