CURLINFO_SSL_ENGINES man page

## NAME

CURLINFO_SSL_ENGINES - get an slist of OpenSSL crypto-engines

## SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SSL_ENGINES, struct curl_slist **engine_list);

## DESCRIPTION

Pass the address of a 'struct curl_slist *' to receive a linked-list of OpenSSL crypto-engines supported. Note that engines are normally implemented in separate dynamic libraries. Hence not all the returned engines may be available at run-time. NOTE: you must call curl_slist_free_all(3) on the list pointer once you're done with it, as libcurl will not free the data for you.

## PROTOCOLS

All TLS based ones.

## EXAMPLE

TODO

## AVAILABILITY

Added in 7.12.3. Available in OpenSSL builds with "engine" support.

## RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

## SEE ALSO

curl_easy_getinfo (3), curl_easy_setopt (3)

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