CURLOPT_MAXAGE_CONN(3) | Library Functions Manual | CURLOPT_MAXAGE_CONN(3) |
NAME
CURLOPT_MAXAGE_CONN - max idle time allowed for reusing a connection
SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXAGE_CONN, long age);
DESCRIPTION
Pass a long as parameter containing age - the maximum time in seconds allowed for an existing connection to have been idle to be considered for reuse for this request.
The "connection cache" holds previously used connections. When a new request is to be done, libcurl considers any connection that matches for reuse. The CURLOPT_MAXAGE_CONN(3) limit prevents libcurl from trying too old connections for reuse, since old connections have a higher 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 age, it is closed instead.
DEFAULT
118 seconds
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 30 seconds idle time */ curl_easy_setopt(curl, CURLOPT_MAXAGE_CONN, 30L); curl_easy_perform(curl); } }
AVAILABILITY
Added in curl 7.65.0
RETURN VALUE
Returns CURLE_OK.
SEE ALSO
CURLOPT_FORBID_REUSE(3), CURLOPT_FRESH_CONNECT(3), CURLOPT_MAXLIFETIME_CONN(3), CURLOPT_TIMEOUT(3)
2024-09-18 | libcurl |