.\" generated by cd2nroff 0.1 from CURLOPT_MAXLIFETIME_CONN.md
.TH CURLOPT_MAXLIFETIME_CONN 3 "2024-11-07" libcurl
.SH NAME
CURLOPT_MAXLIFETIME_CONN \- max lifetime (since creation) allowed for reusing a connection
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXLIFETIME_CONN,
                          long maxlifetime);
.fi
.SH DESCRIPTION
Pass a long as parameter containing \fImaxlifetime\fP \- 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 \fICURLOPT_MAXLIFETIME_CONN(3)\fP 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 \fImaxlifetime\fP, it is instead marked for closure.

If set to 0, this behavior is disabled: all connections are eligible for reuse.
.SH DEFAULT
0 seconds (i.e., disabled)
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
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);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.80.0
.SH RETURN VALUE
Returns CURLE_OK.
.SH SEE ALSO
.BR CURLOPT_FORBID_REUSE (3),
.BR CURLOPT_FRESH_CONNECT (3),
.BR CURLOPT_MAXAGE_CONN (3),
.BR CURLOPT_TIMEOUT (3)