10-at-a-time altsvc anyauthput certinfo chkspeed cookie_interface debug externalsocket fileupload fopen ftp-wildcard ftpget ftpgetinfo ftpgetresp ftpsget ftpupload ftpuploadfrommem ftpuploadresume getreferrer getinfo getinmemory getredirect http-post http2-download http2-pushinmemory http2-serverpush http2-upload http3 http3-present httpcustomheader httpput httpput-postfields https imap-append imap-authzid imap-copy imap-create imap-delete imap-examine imap-fetch imap-list imap-lsub imap-multi imap-noop imap-search imap-ssl imap-store imap-tls multi-app multi-debugcallback multi-double multi-formadd multi-legacy multi-poll multi-post multi-single parseurl persistent pop3-authzid pop3-dele pop3-list pop3-multi pop3-noop pop3-retr pop3-ssl pop3-stat pop3-tls pop3-top pop3-uidl post-callback postinmemory postit2 postit2-formadd progressfunc resolve rtsp sendrecv sepheaders sftpget sftpuploadresume shared-connection-cache simple simplepost simplessl smtp-authzid smtp-expn smtp-mail smtp-mime smtp-multi smtp-ssl smtp-tls smtp-vrfy sslbackend urlapi url2file usercertinmem xmlstream