.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) Daniel Stenberg, , et al. .\" * .\" * This software is licensed as described in the file COPYING, which .\" * you should have received as part of this distribution. The terms .\" * are also available at https://curl.se/docs/copyright.html. .\" * .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell .\" * copies of the Software, and permit persons to whom the Software is .\" * furnished to do so, under the terms of the COPYING file. .\" * .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY .\" * KIND, either express or implied. .\" * .\" * SPDX-License-Identifier: curl .\" * .\" ************************************************************************** .\" .TH CURLOPT_MAXAGE_CONN 3 "January 02, 2023" "libcurl 7.88.1" "curl_easy_setopt options" .SH NAME CURLOPT_MAXAGE_CONN \- max idle time allowed for reusing a connection .SH SYNOPSIS .nf #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXAGE_CONN, long age); .fi .SH DESCRIPTION Pass a long as parameter containing \fIage\fP - the maximum time in seconds that you allow an existing connection to have been idle to be considered for reuse for this request. The "connection cache" that holds previously used connections. When a new request is to be done, it will consider any connection that matches for reuse. The \fICURLOPT_MAXAGE_CONN(3)\fP limit prevents libcurl from trying too old connections for reuse, since old connections have a high risk of not working and thus trying them is a performance loss and sometimes service loss due to the difficulties to figure out the situation. If a connection is found in the cache that is older than this set \fIage\fP, it will instead be closed. .SH DEFAULT Default maximum age is set to 118 seconds. .SH PROTOCOLS All .SH EXAMPLE .nf CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* only allow 30 seconds idle time */ curl_easy_setopt(curl, CURLOPT_MAXAGE_CONN, 30L); curl_easy_perform(curl); } .fi .SH AVAILABILITY Added in 7.65.0 .SH RETURN VALUE Returns CURLE_OK. .SH "SEE ALSO" .BR CURLOPT_TIMEOUT "(3), " CURLOPT_FORBID_REUSE "(3), " .BR CURLOPT_FRESH_CONNECT "(3), " CURLOPT_MAXLIFETIME_CONN "(3), "