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53 lines
1.7 KiB
Groff
53 lines
1.7 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_MAXLIFETIME_CONN.md
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.TH CURLOPT_MAXLIFETIME_CONN 3 "2024-06-01" libcurl
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.SH NAME
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CURLOPT_MAXLIFETIME_CONN \- max lifetime (since creation) 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_MAXLIFETIME_CONN,
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long maxlifetime);
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.fi
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.SH DESCRIPTION
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Pass a long as parameter containing \fImaxlifetime\fP \- the maximum time in
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seconds, since the creation of the connection, that you allow an existing
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connection to have to be considered for reuse for this request.
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libcurl features a connection cache that holds previously used connections.
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When a new request is to be done, libcurl considers any connection that
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matches for reuse. The \fICURLOPT_MAXLIFETIME_CONN(3)\fP limit prevents
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libcurl from trying too old connections for reuse. This can be used for
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client\-side load balancing. If a connection is found in the cache that is
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older than this set \fImaxlifetime\fP, it is instead marked for closure.
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If set to 0, this behavior is disabled: all connections are eligible for reuse.
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.SH DEFAULT
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Default \fImaxlifetime\fP is 0 seconds (i.e., disabled).
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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 each connection to be reused for 30 seconds */
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curl_easy_setopt(curl, CURLOPT_MAXLIFETIME_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 7.80.0
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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_MAXAGE_CONN (3),
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.BR CURLOPT_TIMEOUT (3)
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