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

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

PROTOCOLS

       All

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 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)

ibcurl 8.5.0                                    December 04, 2023              CURLMOPT_MAX_TOTAL_CONNECTIONS(3)