NAME

       CURLMOPT_MAX_TOTAL_CONNECTIONS - max simultaneously open connections

SYNOPSIS

       #include <curl/curl.h>

       CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAX_TOTAL_CONNECTIONS,
                                   long amount);

DESCRIPTION

       Pass a long for the amount. The set number is used as the maximum number of simultaneously
       open connections in total using this multi handle. For each  new  session,  libcurl  might
       open  a  new connection up to the limit set by CURLMOPT_MAX_TOTAL_CONNECTIONS(3). When the
       limit is reached, new sessions are held pending until there are available connections.  If
       CURLMOPT_PIPELINING(3)  is enabled, libcurl can try multiplexing if the host is capable of
       it.

       When more transfers are added to the multi handle than what can be performed  due  to  the
       set  limit,  they  get  queued  up  waiting  for  their  chance.  When  that  happens, the
       CURLOPT_TIMEOUT_MS(3) timeout is counted inclusive of the waiting time,  meaning  that  if
       you  set a too narrow timeout in such a case the transfer might never even start before it
       times out.

       Even in the queued up  situation,  the  CURLOPT_CONNECTTIMEOUT_MS(3)  timeout  is  however
       treated as a per-connect timeout.

DEFAULT

       0,  which means that there is no limit. It is then simply controlled by the number of easy
       handles added.

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         CURLM *m = curl_multi_init();
         /* never do more than 15 connections */
         curl_multi_setopt(m, CURLMOPT_MAX_TOTAL_CONNECTIONS, 15L);
       }

AVAILABILITY

       Added in curl 7.30.0

RETURN VALUE

       Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.

SEE ALSO

       CURLMOPT_MAXCONNECTS(3), CURLMOPT_MAX_HOST_CONNECTIONS(3)