NAME

       CURLOPT_CONNECTTIMEOUT_MS - timeout for the connect phase

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONNECTTIMEOUT_MS,
                                 long timeout);

DESCRIPTION

       Pass  a long. It sets the maximum time in milliseconds that you allow the connection phase
       to take. This timeout only limits the connection phase, it has no impact once libcurl  has
       connected.  The  connection  phase  includes  the  name  resolve  (DNS)  and  all protocol
       handshakes and negotiations until there is an established connection with the remote side.

       Set this option to zero to switch  to  the  default  built-in  connection  timeout  -  300
       seconds. See also the CURLOPT_TIMEOUT_MS(3) option.

       CURLOPT_CONNECTTIMEOUT(3) is the same function but set in seconds.

       If  both CURLOPT_CONNECTTIMEOUT(3) and CURLOPT_CONNECTTIMEOUT_MS(3) are set, the value set
       last is used.

       The connection timeout is included in the general all-covering CURLOPT_TIMEOUT_MS(3):

       With CURLOPT_CONNECTTIMEOUT_MS(3) set to 3000 and CURLOPT_TIMEOUT_MS(3) set to  5000,  the
       operation  can  never  last longer than 5000 milliseconds, and the connection phase cannot
       last longer than 3000 milliseconds.

       With CURLOPT_CONNECTTIMEOUT_MS(3) set to 4000 and CURLOPT_TIMEOUT_MS(3) set to  2000,  the
       operation can never last longer than 2000 milliseconds. Including the connection phase.

       This  option may cause libcurl to use the SIGALRM signal to timeout system calls on builds
       not using asynch DNS. In unix-like systems, this might cause signals  to  be  used  unless
       CURLOPT_NOSIGNAL(3) is set.

DEFAULT

       300000

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* complete connection within 10000 milliseconds */
           curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT_MS, 10000L);

           curl_easy_perform(curl);
         }
       }

AVAILABILITY

       Added in curl 7.16.2

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_MAX_RECV_SPEED_LARGE(3), CURLOPT_TIMEOUT_MS(3)