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CURLMOPT_MAXCONNECTS(3) Library Functions Manual CURLMOPT_MAXCONNECTS(3) NAME CURLMOPT_MAXCONNECTS - size of connection cache SYNOPSIS #include <curl/curl.h> CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_MAXCONNECTS, long max); DESCRIPTION Pass a long indicating the max, the maximum amount of connections that libcurl may keep alive in its connection cache after use. By default libcurl enlarges the size for each added easy handle to make it fit 4 times the number of added easy handles. By setting this option, you prevent the cache size from growing beyond the limit set by you. When the cache is full, curl closes the oldest connection present in the cache to prevent the number of connections from increasing. This option is for the multi handle's use only, when using the easy inter- face you should instead use the CURLOPT_MAXCONNECTS(3) option. See CURLMOPT_MAX_TOTAL_CONNECTIONS(3) for limiting the number of active connections. Changing this value when there are transfers in progress is possible, and the new value is then used the next time checks are performed. Lowering the value does not close down any active transfers, it prevents new ones from being made. DEFAULT See DESCRIPTION PROTOCOLS This functionality affects all supported protocols EXAMPLE int main(void) { CURLM *m = curl_multi_init(); /* only keep 10 connections in the cache */ curl_multi_setopt(m, CURLMOPT_MAXCONNECTS, 10L); } AVAILABILITY Added in curl 7.16.3 RETURN VALUE curl_multi_setopt(3) returns a CURLMcode indicating success or error. CURLM_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLMOPT_MAX_HOST_CONNECTIONS(3), CURLOPT_MAXCONNECTS(3) libcurl 2026-06-11 CURLMOPT_MAXCONNECTS(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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