NAME

       CURLOPT_CONNECTTIMEOUT - timeout for the connect phase

SYNOPSIS

       #include <curl/curl.h>

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

DESCRIPTION

       Pass  a  long.  It sets the maximum time in seconds 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(3) option.

       CURLOPT_CONNECTTIMEOUT_MS(3) is the same function but set in milliseconds.

       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(3):

       With CURLOPT_CONNECTTIMEOUT(3) set to 3 and CURLOPT_TIMEOUT(3) set to 5, the operation can
       never  last  longer  than  5  seconds,  and the connection phase cannot last longer than 3
       seconds.

       With CURLOPT_CONNECTTIMEOUT(3) set to 4 and CURLOPT_TIMEOUT(3) set to 2, the operation can
       never last longer than 2 seconds. 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

       300

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 10 seconds */
           curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 10L);

           curl_easy_perform(curl);
         }
       }

AVAILABILITY

       Added in curl 7.7

RETURN VALUE

       Returns  CURLE_OK.  Returns  CURLE_BAD_FUNCTION_ARGUMENT  if  set to a negative value or a
       value that when converted to milliseconds is too large.

SEE ALSO

       CURLOPT_LOW_SPEED_LIMIT(3), CURLOPT_MAX_RECV_SPEED_LARGE(3), CURLOPT_TIMEOUT(3)