NAME

       CURLOPT_MAXLIFETIME_CONN - max lifetime (since creation) allowed for reusing a connection

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXLIFETIME_CONN,
                                 long maxlifetime);

DESCRIPTION

       Pass  a long as parameter containing maxlifetime - the maximum time in seconds, since the creation of the
       connection, that you allow an existing connection to have to be considered for reuse for this request.

       libcurl features a connection cache that holds previously used connections.  When a new request is to  be
       done,  libcurl  considers  any  connection  that matches for reuse. The CURLOPT_MAXLIFETIME_CONN(3) limit
       prevents libcurl from trying too old connections for  reuse.  This  can  be  used  for  client-side  load
       balancing.  If  a connection is found in the cache that is older than this set maxlifetime, it is instead
       marked for closure.

       If set to 0, this behavior is disabled: all connections are eligible for reuse.

DEFAULT

       0 seconds (i.e., disabled)

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* only allow each connection to be reused for 30 seconds */
           curl_easy_setopt(curl, CURLOPT_MAXLIFETIME_CONN, 30L);

           curl_easy_perform(curl);
         }
       }

AVAILABILITY

       Added in curl 7.80.0

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).

SEE ALSO

       CURLOPT_FORBID_REUSE(3), CURLOPT_FRESH_CONNECT(3), CURLOPT_MAXAGE_CONN(3), CURLOPT_TIMEOUT(3)

libcurl                                            2025-06-16                        CURLOPT_MAXLIFETIME_CONN(3)