CURLMOPT_MAXCONNECTS(3)    Library Functions Manual    CURLMOPT_MAXCONNECTS(3)

NAME
       CURLMOPT_MAXCONNECTS - size of connection cache

SYNOPSIS
       #include <curl/curl.h>

       CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAXCONNECTS, long max);

DESCRIPTION
       Pass a long indicating the max. The set number is used as the maximum
       amount of simultaneously open connections that libcurl may keep in its
       connection cache after completed use. By default libcurl enlarges the
       size for each added easy handle to make it fit 4 times the number of
       added easy handles.

       By setting this option, you can prevent the cache size from growing
       beyond the limit set by you.

       When the cache is full, curl closes the oldest one in the cache to
       prevent the number of open connections from increasing.

       This option is for the multi handle's use only, when using the easy
       interface you should instead use the CURLOPT_MAXCONNECTS(3) option.

       See CURLMOPT_MAX_TOTAL_CONNECTIONS(3) for limiting the number of active
       connections.

       Changing this value when there are transfers in progress is possible,
       and the new value is then used the next time checks are performed.
       Lowering the value does however not close down any active transfers, it
       simply does not allow new ones to get made.

DEFAULT
       See DESCRIPTION

PROTOCOLS
       All

EXAMPLE
       int main(void)
       {
         CURLM *m = curl_multi_init();
         /* only keep 10 connections in the cache */
         curl_multi_setopt(m, CURLMOPT_MAXCONNECTS, 10L);
       }

AVAILABILITY
       Added in 7.16.3

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

SEE ALSO
       CURLMOPT_MAX_HOST_CONNECTIONS(3), CURLOPT_MAXCONNECTS(3)

libcurl                          April 26 2024         CURLMOPT_MAXCONNECTS(3)