CURLOPT_SSL_SIGNATURE_ALGORITHMS to pass a list of signature. algorithms to use for the TLS connection.CURLOPT_UPLOAD_FLAGS to pass upload flags for IMAP.CURLFOLLOW_OBEYCODE and CURLFOLLOW_FIRSTONLY options to CURLOPT_FOLLOWLOCATION.CURLWS_NOAUTOPONG to disable auto-pong reply.curl_easy_setopt for CURL_NETRC_OPTION.