CURLOPT_MAXAGE_CONN

Section: curl_easy_setopt options (3)
Updated: April 14, 2019
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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 maxage);  

DESCRIPTION

Pass a long as parameter containing maxage - the maximum time in seconds that you allow an existing connection to have 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 very 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 maxage, it will instead be closed.  

DEFAULT

Default maxage is 118 seconds.  

PROTOCOLS

All  

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

  /* only allow 30 seconds idle time */
  curl_easy_setopt(curl, CURLOPT_MAXAGE_CONN, 30L);

  curl_easy_perform(curl);
}
 

AVAILABILITY

Added in libcurl 7.65.0  

RETURN VALUE

Returns CURLE_OK.  

SEE ALSO

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO