curl_multi_cleanup - close down a multi session
CURLMcode curl_multi_cleanup( CURLM *multi_handle );
Cleans up and removes a whole multi stack. It does not free or touch any individual easy handles in any way - they still need to be closed individually, using the usual curl_easy_cleanup(3) way. The order of cleaning up should be:
1 - curl_multi_remove_handle(3) before any easy handles are cleaned up
2 - curl_easy_cleanup(3) can now be called independently since the easy handle is no longer connected to the multi handle
3 - curl_multi_cleanup(3) should be called when all easy handles are removed
Passing in a NULL pointer in multi_handle will make this function return CURLM_BAD_HANDLE immediately with no other action.
CURLMcode type, general libcurl multi interface error code. On success, CURLM_OK is returned.