CURLOPT_MAXLIFETIME_CONN - Online Linux Manual Page

Section : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : curl_easy_setopt options

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, it will consider 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 will instead be closed once any in-progress transfers complete. If set to 0, this behavior is disabled: all connections are eligible for reuse.

DEFAULT

Default maxlifetime

is 0 seconds (i.e., disabled).

PROTOCOLS

All

EXAMPLE

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 7.80.0

RETURN VALUE

Returns CURLE_OK.