Tribblix: manual page: CURLOPT

CURLOPT_MAXCONNECTS(3) Introduction to Library Functions

NAME

CURLOPT_MAXCONNECTS - maximum connection cache size

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXCONNECTS, long amount);

DESCRIPTION

Pass a long. The set amount is the maximum number of connections that
libcurl may keep alive in its connection cache after use. The default
is 5, and there is not much point in changing this value unless you
are perfectly aware of how this works. This concerns connections
using any of the protocols that support persistent connections.

When reaching the maximum limit, curl closes the oldest connection
present in the cache to prevent the number of connections from
increasing.

If you already have performed transfers with this curl handle,
setting a smaller CURLOPT_MAXCONNECTS(3) than before may cause open
connections to get closed unnecessarily.

If you add this easy handle to a multi handle, this setting is not
acknowledged, and you must instead use curl_multi_setopt(3) and the
CURLMOPT_MAXCONNECTS(3) option.

DEFAULT

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* limit the connection cache for this handle to no more than 3 */
curl_easy_setopt(curl, CURLOPT_MAXCONNECTS, 3L);
ret = curl_easy_perform(curl);
}
}

AVAILABILITY

Added in curl 7.7

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error
occurred, see libcurl-errors(3).