CURLOPT_MAXAGE_CONN - Man Page

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 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 CURLOPT_MAXAGE_CONN(3) 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 age, it will instead be closed.

Default

Default maximum age is set to 118 seconds.

Protocols

All

Example

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 7.65.0

Return Value

Returns CURLE_OK.

See Also

CURLOPT_TIMEOUT(3), CURLOPT_FORBID_REUSE(3), CURLOPT_FRESH_CONNECT(3), CURLOPT_MAXLIFETIME_CONN(3),

Referenced By

curl_easy_setopt(3), CURLOPT_MAXLIFETIME_CONN(3).

September 20, 2022 libcurl 7.86.0 curl_easy_setopt options