70 lines
1.5 KiB
Markdown
70 lines
1.5 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLMOPT_MAXCONNECTS
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Section: 3
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Source: libcurl
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See-also:
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- CURLMOPT_MAX_HOST_CONNECTIONS (3)
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- CURLOPT_MAXCONNECTS (3)
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---
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# NAME
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CURLMOPT_MAXCONNECTS - size of connection cache
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAXCONNECTS, long max);
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~~~
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# DESCRIPTION
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Pass a long indicating the **max**. The set number is used as the maximum
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amount of simultaneously open connections that libcurl may keep in its
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connection cache after completed use. By default libcurl enlarges the size for
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each added easy handle to make it fit 4 times the number of added easy
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handles.
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By setting this option, you can prevent the cache size from growing beyond the
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limit set by you.
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When the cache is full, curl closes the oldest one in the cache to prevent the
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number of open connections from increasing.
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This option is for the multi handle's use only, when using the easy interface
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you should instead use the CURLOPT_MAXCONNECTS(3) option.
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See CURLMOPT_MAX_TOTAL_CONNECTIONS(3) for limiting the number of active
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connections.
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# DEFAULT
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See DESCRIPTION
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# PROTOCOLS
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All
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURLM *m = curl_multi_init();
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/* only keep 10 connections in the cache */
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curl_multi_setopt(m, CURLMOPT_MAXCONNECTS, 10L);
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}
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~~~
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# AVAILABILITY
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Added in 7.16.3
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# RETURN VALUE
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Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.
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