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.\" generated by cd2nroff 0.1 from curl_multi_init.md
.TH curl_multi_init 3 "2025-06-27" libcurl
.SH NAME
curl_multi_init \- create a multi handle
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLM *curl_multi_init();
.fi
.SH DESCRIPTION
This function returns a pointer to a \fICURLM\fP handle to be used as input to
all the other multi\-functions, sometimes referred to as a multi handle in some
places in the documentation. This init call MUST have a corresponding call to
\fIcurl_multi_cleanup(3)\fP when the operation is complete.
By default, several caches are stored in and held by the multi handle: DNS
cache, connection pool, TLS session ID cache and the TLS CA cert cache. All
transfers using the same multi handle share these caches.
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
/* init a multi stack */
CURLM *multi = curl_multi_init();
CURL *curl = curl_easy_init();
CURL *curl2 = curl_easy_init();
/* add individual transfers */
curl_multi_add_handle(multi, curl);
curl_multi_add_handle(multi, curl2);
}
.fi
.SH AVAILABILITY
Added in curl 7.9.6
.SH RETURN VALUE
If this function returns NULL, something went wrong and you cannot use the
other curl functions.
.SH SEE ALSO
.BR curl_easy_init (3),
.BR curl_global_init (3),
.BR curl_multi_add_handle (3),
.BR curl_multi_cleanup (3),
.BR curl_multi_get_handles (3)