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)