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51 lines
1.5 KiB
Groff
51 lines
1.5 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_MAXAGE_CONN.md
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.TH CURLOPT_MAXAGE_CONN 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_MAXAGE_CONN \- max idle time allowed for reusing a connection
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXAGE_CONN, long age);
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.fi
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.SH DESCRIPTION
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Pass a long as parameter containing \fIage\fP \- the maximum time in seconds
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allowed for an existing connection to have been idle to be considered for
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reuse for this request.
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The "connection cache" holds previously used connections. When a new request
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is to be done, libcurl considers any connection that matches for reuse. The
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\fICURLOPT_MAXAGE_CONN(3)\fP limit prevents libcurl from trying too old
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connections for reuse, since old connections have a higher risk of not working
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and thus trying them is a performance loss and sometimes service loss due to
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the difficulties to figure out the situation. If a connection is found in the
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cache that is older than this set \fIage\fP, it is closed instead.
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.SH DEFAULT
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Default maximum age is set to 118 seconds.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* only allow 30 seconds idle time */
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curl_easy_setopt(curl, CURLOPT_MAXAGE_CONN, 30L);
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.65.0
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.SH RETURN VALUE
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Returns CURLE_OK.
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.SH SEE ALSO
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.BR CURLOPT_FORBID_REUSE (3),
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.BR CURLOPT_FRESH_CONNECT (3),
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.BR CURLOPT_MAXLIFETIME_CONN (3),
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.BR CURLOPT_TIMEOUT (3)
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