Nothing
R/values.R
In curl: A Modern and Flexible Web Client for R
# Generated by tools/curl-consts from <curl/curl.h> (libcurl 8.21.1):
#
# ./tools/curl-consts -N tools/option-values.txt -t
#
# These are the symbolic values for curl options, i.e. enums, macros and
# bitmask flags that libcurl expects for options of type 'long'. The numeric
# values are part of the libcurl ABI and never change, so this file does not
# depend on the version of libcurl at build or run time.
#
# Wide bitmasks that use the full 32 bits (e.g. CURLAUTH_ANY) do not fit an
# R integer and are stored as doubles, which hold these values exactly. The
# C code in R_handle_setopt converts them back to the proper long.
#' @details
#' Several curl options take an enum or bitmask value, for which the libcurl
#' manual pages give symbolic names. These constants are exported as R
#' variables, so you can copy such values literally from the libcurl
#' documentation:
#'
#' ```r
#' h <- new_handle()
#' handle_setopt(h, http_version = CURL_HTTP_VERSION_1_1)
#' handle_setopt(h, httpauth = CURLAUTH_NEGOTIATE)
#' ```
#'
#' For bitmask options, each constant is a single distinct bit, so where the
#' libcurl documentation combines flags with `|`, you can simply add them up:
#'
#' ```r
#' handle_setopt(h, httpauth = CURLAUTH_BASIC + CURLAUTH_DIGEST)
#' handle_setopt(h, altsvc_ctrl = CURLALTSVC_H1 + CURLALTSVC_H2)
#' ```
#'
#' Note that a few wide bitmasks such as `CURLAUTH_ANY` exceed the range of
#' R integers and are therefore stored as doubles, holding the exact same
#' numeric value as their C counterparts.
#'
#' The sections below list the supported options with their values, in the
#' same order as the corresponding libcurl manual pages. As usual with
#' [handle_setopt()], the R option name is the `CURLOPT_` constant, lowercase
#' and without the prefix, e.g. `CURLOPT_HTTPAUTH` becomes `httpauth`.
#'
#' # CURLOPT_ALTSVC_CTRL
#' Bitmask to enable Alt-Svc support, see
#' <https://curl.se/libcurl/c/CURLOPT_ALTSVC_CTRL.html>.
#' - `CURLALTSVC_H1`: accept alternative services offered over HTTP/1.1
#' - `CURLALTSVC_H2`: accept alternative services offered over HTTP/2
#' - `CURLALTSVC_H3`: accept alternative services offered over HTTP/3
#' - `CURLALTSVC_READONLYFILE`: do not write the alt-svc cache back to the file
#'
#' # CURLOPT_FOLLOWLOCATION
#' In addition to classic `TRUE`/`FALSE`, libcurl >= 8.13 supports these
#' modes, see <https://curl.se/libcurl/c/CURLOPT_FOLLOWLOCATION.html>.
#' - `CURLFOLLOW_ALL`: follow redirects (same as `TRUE`)
#' - `CURLFOLLOW_OBEYCODE`: follow redirects, but do not use the custom
#' method in the follow-up request when the HTTP code (301, 302, 303)
#' instructs so
#' - `CURLFOLLOW_FIRSTONLY`: only use the custom method in the first
#' request, always reset it in the next
#'
#' # CURLOPT_FTP_CREATE_MISSING_DIRS
#' See <https://curl.se/libcurl/c/CURLOPT_FTP_CREATE_MISSING_DIRS.html>.
#' - `CURLFTP_CREATE_DIR_NONE`: do not create missing directories
#' - `CURLFTP_CREATE_DIR`: create a missing directory, fail if that does not work
#' - `CURLFTP_CREATE_DIR_RETRY`: retry the CWD command again if the
#' directory could not be created, in case it was created by a third party
#' in the meantime
#'
#' # CURLOPT_FTP_FILEMETHOD
#' Select how to reach a file on an FTP(S) server, see
#' <https://curl.se/libcurl/c/CURLOPT_FTP_FILEMETHOD.html>.
#' - `CURLFTPMETHOD_DEFAULT`: let libcurl pick (same as `MULTICWD`)
#' - `CURLFTPMETHOD_MULTICWD`: a `CWD` command for each path part
#' - `CURLFTPMETHOD_NOCWD`: no `CWD` at all, use the full path in every command
#' - `CURLFTPMETHOD_SINGLECWD`: one `CWD` with the full target directory
#'
#' # CURLOPT_FTP_SSL_CCC
#' Clear Command Channel mode, see
#' <https://curl.se/libcurl/c/CURLOPT_FTP_SSL_CCC.html>.
#' - `CURLFTPSSL_CCC_NONE`: do not attempt to shut down the SSL/TLS layer
#' - `CURLFTPSSL_CCC_PASSIVE`: do not initiate the shutdown, wait for the server
#' - `CURLFTPSSL_CCC_ACTIVE`: initiate the shutdown ourselves
#'
#' # CURLOPT_FTPSSLAUTH
#' Order in which to attempt TLS vs SSL when upgrading an FTP connection, see
#' <https://curl.se/libcurl/c/CURLOPT_FTPSSLAUTH.html>.
#' - `CURLFTPAUTH_DEFAULT`: let libcurl decide
#' - `CURLFTPAUTH_SSL`: try `AUTH SSL` first
#' - `CURLFTPAUTH_TLS`: try `AUTH TLS` first
#'
#' # CURLOPT_GSSAPI_DELEGATION
#' See <https://curl.se/libcurl/c/CURLOPT_GSSAPI_DELEGATION.html>.
#' - `CURLGSSAPI_DELEGATION_NONE`: no delegation (default)
#' - `CURLGSSAPI_DELEGATION_POLICY_FLAG`: delegate if the OK-AS-DELEGATE
#' flag is set in the service ticket
#' - `CURLGSSAPI_DELEGATION_FLAG`: unconditionally allow delegation
#'
#' # CURLOPT_HEADEROPT
#' How to send custom headers to a proxy, see
#' <https://curl.se/libcurl/c/CURLOPT_HEADEROPT.html>.
#' - `CURLHEADER_UNIFIED`: the headers set with `httpheader` are also sent
#' to the proxy
#' - `CURLHEADER_SEPARATE`: only headers set with `proxyheader` are sent to
#' the proxy
#'
#' # CURLOPT_HSTS_CTRL
#' Bitmask to enable HSTS (HTTP Strict Transport Security), see
#' <https://curl.se/libcurl/c/CURLOPT_HSTS_CTRL.html>.
#' - `CURLHSTS_ENABLE`: enable the in-memory HSTS cache
#' - `CURLHSTS_READONLYFILE`: do not write the HSTS cache back to the file
#'
#' # CURLOPT_HTTP_VERSION
#' Preferred HTTP protocol version, see
#' <https://curl.se/libcurl/c/CURLOPT_HTTP_VERSION.html>.
#' - `CURL_HTTP_VERSION_NONE`: no preference, let libcurl choose (default)
#' - `CURL_HTTP_VERSION_1_0`: enforce HTTP 1.0
#' - `CURL_HTTP_VERSION_1_1`: enforce HTTP 1.1
#' - `CURL_HTTP_VERSION_2_0`: attempt HTTP 2, fall back to HTTP 1.1
#' (`CURL_HTTP_VERSION_2` is an alias)
#' - `CURL_HTTP_VERSION_2TLS`: attempt HTTP 2 for HTTPS only, HTTP 1.1 otherwise
#' - `CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE`: use HTTP 2 without HTTP/1.1 Upgrade
#' - `CURL_HTTP_VERSION_3`: attempt HTTP 3, fall back to earlier versions
#' - `CURL_HTTP_VERSION_3ONLY`: use HTTP 3 or fail
#'
#' # CURLOPT_HTTPAUTH
#' Bitmask of HTTP authentication methods libcurl may use, see
#' <https://curl.se/libcurl/c/CURLOPT_HTTPAUTH.html>. The same values apply
#' to `proxyauth`
#' ([CURLOPT_PROXYAUTH](https://curl.se/libcurl/c/CURLOPT_PROXYAUTH.html)).
#' - `CURLAUTH_NONE`: no authentication
#' - `CURLAUTH_BASIC`: HTTP Basic authentication (default)
#' - `CURLAUTH_DIGEST`: HTTP Digest authentication
#' - `CURLAUTH_DIGEST_IE`: HTTP Digest authentication with an IE flavor
#' - `CURLAUTH_BEARER`: HTTP Bearer token (OAuth 2.0) authentication
#' - `CURLAUTH_NEGOTIATE`: HTTP Negotiate (SPNEGO) authentication
#' (`CURLAUTH_GSSAPI` is an alias)
#' - `CURLAUTH_NTLM`: HTTP NTLM authentication
#' - `CURLAUTH_AWS_SIGV4`: HTTP AWS V4 signature authentication
#' - `CURLAUTH_ANY`: all supported methods, libcurl picks the most secure
#' - `CURLAUTH_ANYSAFE`: all supported methods except Basic
#' - `CURLAUTH_ONLY`: modifier bit: use only the method set alongside it,
#' e.g. `CURLAUTH_ONLY + CURLAUTH_DIGEST`
#'
#' # CURLOPT_IPRESOLVE
#' See <https://curl.se/libcurl/c/CURLOPT_IPRESOLVE.html>.
#' - `CURL_IPRESOLVE_WHATEVER`: resolve to any IP version (default)
#' - `CURL_IPRESOLVE_V4`: only use IPv4 addresses
#' - `CURL_IPRESOLVE_V6`: only use IPv6 addresses
#'
#' # CURLOPT_MIME_OPTIONS
#' See <https://curl.se/libcurl/c/CURLOPT_MIME_OPTIONS.html>.
#' - `CURLMIMEOPT_FORMESCAPE`: backslash-escape quotes and backslashes in
#' multipart form field and file names
#'
#' # CURLOPT_NETRC
#' Whether to read credentials from the `.netrc` file, see
#' <https://curl.se/libcurl/c/CURLOPT_NETRC.html>.
#' - `CURL_NETRC_IGNORED`: ignore the netrc file (default)
#' - `CURL_NETRC_OPTIONAL`: use the netrc file, but credentials in the URL
#' take precedence
#' - `CURL_NETRC_REQUIRED`: only use the netrc file, ignore credentials in
#' the URL
#'
#' # CURLOPT_POSTREDIR
#' Bitmask of redirect codes after which a POST must remain a POST, see
#' <https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html>.
#' - `CURL_REDIR_POST_301`: keep the POST method after a 301 redirect
#' - `CURL_REDIR_POST_302`: keep the POST method after a 302 redirect
#' - `CURL_REDIR_POST_303`: keep the POST method after a 303 redirect
#' - `CURL_REDIR_POST_ALL`: all of the above
#' - `CURL_REDIR_GET_ALL`: convert to GET on all redirects (default)
#'
#' # CURLOPT_PROXYTYPE
#' Type of the proxy set with `proxy`, see
#' <https://curl.se/libcurl/c/CURLOPT_PROXYTYPE.html>.
#' - `CURLPROXY_HTTP`: HTTP proxy (default)
#' - `CURLPROXY_HTTPS`: HTTPS proxy using HTTP/1.x
#' - `CURLPROXY_HTTPS2`: HTTPS proxy, attempt HTTP/2
#' - `CURLPROXY_HTTP_1_0`: HTTP proxy, force HTTP 1.0
#' - `CURLPROXY_SOCKS4`: SOCKS4 proxy
#' - `CURLPROXY_SOCKS4A`: SOCKS4a proxy, proxy resolves the hostname
#' - `CURLPROXY_SOCKS5`: SOCKS5 proxy
#' - `CURLPROXY_SOCKS5_HOSTNAME`: SOCKS5 proxy, proxy resolves the hostname
#'
#' # CURLOPT_SOCKS5_AUTH
#' Bitmask of allowed methods for SOCKS5 proxy authentication, see
#' <https://curl.se/libcurl/c/CURLOPT_SOCKS5_AUTH.html>: `CURLAUTH_BASIC`
#' (username/password), `CURLAUTH_GSSAPI` and `CURLAUTH_NONE`.
#'
#' # CURLOPT_SSH_AUTH_TYPES
#' Bitmask of authentication types for SFTP/SCP connections, see
#' <https://curl.se/libcurl/c/CURLOPT_SSH_AUTH_TYPES.html>.
#' - `CURLSSH_AUTH_PUBLICKEY`: public/private key files
#' - `CURLSSH_AUTH_PASSWORD`: password
#' - `CURLSSH_AUTH_HOST`: host key files
#' - `CURLSSH_AUTH_KEYBOARD`: keyboard interactive
#' - `CURLSSH_AUTH_AGENT`: ssh-agent
#' - `CURLSSH_AUTH_GSSAPI`: gssapi (kerberos, ...)
#' - `CURLSSH_AUTH_ANY`: any method (default, `CURLSSH_AUTH_DEFAULT` is an alias)
#' - `CURLSSH_AUTH_NONE`: no allowed methods
#'
#' # CURLOPT_SSL_OPTIONS
#' Bitmask of SSL behavior options, see
#' <https://curl.se/libcurl/c/CURLOPT_SSL_OPTIONS.html>. The same values
#' apply to `proxy_ssl_options`
#' ([CURLOPT_PROXY_SSL_OPTIONS](https://curl.se/libcurl/c/CURLOPT_PROXY_SSL_OPTIONS.html)).
#' - `CURLSSLOPT_ALLOW_BEAST`: allow the BEAST SSL vulnerability for
#' interoperability reasons
#' - `CURLSSLOPT_NO_REVOKE`: disable certificate revocation checks (Schannel)
#' - `CURLSSLOPT_NO_PARTIALCHAIN`: do not accept partial certificate chains
#' - `CURLSSLOPT_REVOKE_BEST_EFFORT`: ignore revocation check failures due
#' to missing/offline distribution points (Schannel)
#' - `CURLSSLOPT_NATIVE_CA`: use the operating system's native CA store
#' - `CURLSSLOPT_AUTO_CLIENT_CERT`: automatically locate and use a client
#' certificate for authentication (Schannel)
#'
#' # CURLOPT_SSLVERSION
#' Preferred TLS/SSL version, see
#' <https://curl.se/libcurl/c/CURLOPT_SSLVERSION.html>. The same values apply
#' to `proxy_sslversion`
#' ([CURLOPT_PROXY_SSLVERSION](https://curl.se/libcurl/c/CURLOPT_PROXY_SSLVERSION.html)).
#' - `CURL_SSLVERSION_DEFAULT`: default, currently the minimum is TLS v1.0
#' - `CURL_SSLVERSION_TLSv1`: TLS v1.0 or later
#' - `CURL_SSLVERSION_TLSv1_0`: TLS v1.0 or later
#' - `CURL_SSLVERSION_TLSv1_1`: TLS v1.1 or later
#' - `CURL_SSLVERSION_TLSv1_2`: TLS v1.2 or later
#' - `CURL_SSLVERSION_TLSv1_3`: TLS v1.3 or later
#'
#' The maximum TLS version can be set by adding one of these to the value
#' above, e.g. `CURL_SSLVERSION_TLSv1_1 + CURL_SSLVERSION_MAX_TLSv1_2`:
#' - `CURL_SSLVERSION_MAX_DEFAULT`: the highest supported TLS version
#' (`CURL_SSLVERSION_MAX_NONE` has the same effect)
#' - `CURL_SSLVERSION_MAX_TLSv1_0`: at most TLS v1.0
#' - `CURL_SSLVERSION_MAX_TLSv1_1`: at most TLS v1.1
#' - `CURL_SSLVERSION_MAX_TLSv1_2`: at most TLS v1.2
#' - `CURL_SSLVERSION_MAX_TLSv1_3`: at most TLS v1.3
#'
#' # CURLOPT_TIMECONDITION
#' How to compare the `timevalue` timestamp, see
#' <https://curl.se/libcurl/c/CURLOPT_TIMECONDITION.html>.
#' - `CURL_TIMECOND_NONE`: no time condition (default)
#' - `CURL_TIMECOND_IFMODSINCE`: only transfer if modified since `timevalue`
#' - `CURL_TIMECOND_IFUNMODSINCE`: only transfer if not modified since `timevalue`
#' - `CURL_TIMECOND_LASTMOD`: (FTP only)
#'
#' # CURLOPT_USE_SSL
#' Request TLS upgrade for FTP, SMTP, POP3 and IMAP transfers, see
#' <https://curl.se/libcurl/c/CURLOPT_USE_SSL.html>.
#' - `CURLUSESSL_NONE`: do not attempt to use SSL (default)
#' - `CURLUSESSL_TRY`: try SSL, proceed as normal otherwise
#' - `CURLUSESSL_CONTROL`: require SSL for the control connection, or fail
#' - `CURLUSESSL_ALL`: require SSL for all communication, or fail
#'
#' # CURLOPT_WS_OPTIONS
#' Bitmask with websocket behavior options, see
#' <https://curl.se/libcurl/c/CURLOPT_WS_OPTIONS.html>.
#' - `CURLWS_RAW_MODE`: deliver raw websocket traffic to the write callback
#' - `CURLWS_NOAUTOPONG`: disable the automatic reply to PING frames
#' (libcurl >= 8.14)
#'
#' # Other symbols
#' The sections above cover the option values supported by [handle_setopt()].
#' Use `curl_symbols()` was previously used to lookup the value of any symbol
#' from the libcurl symbol table, along with the libcurl version in which it was
#' introduced, deprecated, or removed.
#'
#' @name curl_options
#' @rdname curl_options
#' @seealso [handle_setopt()]
#' @examples
#' # Set options using symbolic constants
#' h <- new_handle()
#' handle_setopt(h, http_version = CURL_HTTP_VERSION_1_1)
#' handle_setopt(h, httpauth = CURLAUTH_BASIC + CURLAUTH_DIGEST)
#'
#' @exportPattern ^CURL
#' @aliases CURL_HTTP_VERSION_1_0 CURL_HTTP_VERSION_1_1 CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
#' @aliases CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE CURL_HTTP_VERSION_2TLS CURL_HTTP_VERSION_3
#' @aliases CURL_HTTP_VERSION_3ONLY CURL_HTTP_VERSION_NONE CURL_IPRESOLVE_V4 CURL_IPRESOLVE_V6
#' @aliases CURL_IPRESOLVE_WHATEVER CURL_NETRC_IGNORED CURL_NETRC_OPTIONAL CURL_NETRC_REQUIRED
#' @aliases CURL_REDIR_GET_ALL CURL_REDIR_POST_301 CURL_REDIR_POST_302 CURL_REDIR_POST_303
#' @aliases CURL_REDIR_POST_ALL
#' @aliases CURL_SSLVERSION_DEFAULT CURL_SSLVERSION_MAX_DEFAULT CURL_SSLVERSION_MAX_NONE
#' @aliases CURL_SSLVERSION_MAX_TLSv1_0 CURL_SSLVERSION_MAX_TLSv1_1 CURL_SSLVERSION_MAX_TLSv1_2
#' @aliases CURL_SSLVERSION_MAX_TLSv1_3 CURL_SSLVERSION_TLSv1 CURL_SSLVERSION_TLSv1_0
#' @aliases CURL_SSLVERSION_TLSv1_1 CURL_SSLVERSION_TLSv1_2 CURL_SSLVERSION_TLSv1_3
#' @aliases CURL_TIMECOND_IFMODSINCE CURL_TIMECOND_IFUNMODSINCE CURL_TIMECOND_LASTMOD
#' @aliases CURL_TIMECOND_NONE CURLALTSVC_H1 CURLALTSVC_H2 CURLALTSVC_H3 CURLALTSVC_READONLYFILE
#' @aliases CURLAUTH_ANY CURLAUTH_ANYSAFE CURLAUTH_AWS_SIGV4 CURLAUTH_BASIC CURLAUTH_BEARER
#' @aliases CURLAUTH_DIGEST CURLAUTH_DIGEST_IE CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE CURLAUTH_NONE
#' @aliases CURLAUTH_NTLM CURLAUTH_ONLY CURLFOLLOW_ALL CURLFOLLOW_FIRSTONLY CURLFOLLOW_OBEYCODE
#' @aliases CURLFTP_CREATE_DIR CURLFTP_CREATE_DIR_NONE CURLFTP_CREATE_DIR_RETRY CURLFTPAUTH_DEFAULT
#' @aliases CURLFTPAUTH_SSL CURLFTPAUTH_TLS CURLFTPMETHOD_DEFAULT CURLFTPMETHOD_MULTICWD
#' @aliases CURLFTPMETHOD_NOCWD CURLFTPMETHOD_SINGLECWD CURLFTPSSL_CCC_ACTIVE CURLFTPSSL_CCC_NONE
#' @aliases CURLFTPSSL_CCC_PASSIVE CURLGSSAPI_DELEGATION_FLAG CURLGSSAPI_DELEGATION_NONE
#' @aliases CURLGSSAPI_DELEGATION_POLICY_FLAG CURLHEADER_SEPARATE CURLHEADER_UNIFIED CURLHSTS_ENABLE
#' @aliases CURLHSTS_READONLYFILE CURLMIMEOPT_FORMESCAPE
#' @aliases CURLPROXY_HTTP CURLPROXY_HTTP_1_0 CURLPROXY_HTTPS
#' @aliases CURLPROXY_HTTPS2 CURLPROXY_SOCKS4 CURLPROXY_SOCKS4A CURLPROXY_SOCKS5
#' @aliases CURLPROXY_SOCKS5_HOSTNAME CURLSSH_AUTH_AGENT CURLSSH_AUTH_ANY CURLSSH_AUTH_DEFAULT
#' @aliases CURLSSH_AUTH_GSSAPI CURLSSH_AUTH_HOST CURLSSH_AUTH_KEYBOARD CURLSSH_AUTH_NONE
#' @aliases CURLSSH_AUTH_PASSWORD CURLSSH_AUTH_PUBLICKEY CURLSSLOPT_ALLOW_BEAST
#' @aliases CURLSSLOPT_AUTO_CLIENT_CERT CURLSSLOPT_NATIVE_CA CURLSSLOPT_NO_PARTIALCHAIN
#' @aliases CURLSSLOPT_NO_REVOKE CURLSSLOPT_REVOKE_BEST_EFFORT CURLUSESSL_ALL CURLUSESSL_CONTROL
#' @aliases CURLUSESSL_NONE CURLUSESSL_TRY CURLWS_NOAUTOPONG CURLWS_RAW_MODE
NULL
CURL_HTTP_VERSION_1_0 <- 1L
CURL_HTTP_VERSION_1_1 <- 2L
CURL_HTTP_VERSION_2 <- 3L
CURL_HTTP_VERSION_2_0 <- 3L
CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE <- 5L
CURL_HTTP_VERSION_2TLS <- 4L
CURL_HTTP_VERSION_3 <- 30L
CURL_HTTP_VERSION_3ONLY <- 31L
CURL_HTTP_VERSION_NONE <- 0L
CURL_IPRESOLVE_V4 <- 1L
CURL_IPRESOLVE_V6 <- 2L
CURL_IPRESOLVE_WHATEVER <- 0L
CURL_NETRC_IGNORED <- 0L
CURL_NETRC_OPTIONAL <- 1L
CURL_NETRC_REQUIRED <- 2L
CURL_REDIR_GET_ALL <- 0L
CURL_REDIR_POST_301 <- 1L
CURL_REDIR_POST_302 <- 2L
CURL_REDIR_POST_303 <- 4L
CURL_REDIR_POST_ALL <- 7L
CURL_SSLVERSION_DEFAULT <- 0L
CURL_SSLVERSION_MAX_DEFAULT <- 65536L
CURL_SSLVERSION_MAX_NONE <- 0L
CURL_SSLVERSION_MAX_TLSv1_0 <- 262144L
CURL_SSLVERSION_MAX_TLSv1_1 <- 327680L
CURL_SSLVERSION_MAX_TLSv1_2 <- 393216L
CURL_SSLVERSION_MAX_TLSv1_3 <- 458752L
CURL_SSLVERSION_TLSv1 <- 1L
CURL_SSLVERSION_TLSv1_0 <- 4L
CURL_SSLVERSION_TLSv1_1 <- 5L
CURL_SSLVERSION_TLSv1_2 <- 6L
CURL_SSLVERSION_TLSv1_3 <- 7L
CURL_TIMECOND_IFMODSINCE <- 1L
CURL_TIMECOND_IFUNMODSINCE <- 2L
CURL_TIMECOND_LASTMOD <- 3L
CURL_TIMECOND_NONE <- 0L
CURLALTSVC_H1 <- 8L
CURLALTSVC_H2 <- 16L
CURLALTSVC_H3 <- 32L
CURLALTSVC_READONLYFILE <- 4L
CURLAUTH_ANY <- 4294967279
CURLAUTH_ANYSAFE <- 4294967278
CURLAUTH_AWS_SIGV4 <- 128L
CURLAUTH_BASIC <- 1L
CURLAUTH_BEARER <- 64L
CURLAUTH_DIGEST <- 2L
CURLAUTH_DIGEST_IE <- 16L
CURLAUTH_GSSAPI <- 4L
CURLAUTH_NEGOTIATE <- 4L
CURLAUTH_NONE <- 0L
CURLAUTH_NTLM <- 8L
CURLAUTH_ONLY <- 2147483648
CURLFOLLOW_ALL <- 1L
CURLFOLLOW_FIRSTONLY <- 3L
CURLFOLLOW_OBEYCODE <- 2L
CURLFTP_CREATE_DIR <- 1L
CURLFTP_CREATE_DIR_NONE <- 0L
CURLFTP_CREATE_DIR_RETRY <- 2L
CURLFTPAUTH_DEFAULT <- 0L
CURLFTPAUTH_SSL <- 1L
CURLFTPAUTH_TLS <- 2L
CURLFTPMETHOD_DEFAULT <- 0L
CURLFTPMETHOD_MULTICWD <- 1L
CURLFTPMETHOD_NOCWD <- 2L
CURLFTPMETHOD_SINGLECWD <- 3L
CURLFTPSSL_CCC_ACTIVE <- 2L
CURLFTPSSL_CCC_NONE <- 0L
CURLFTPSSL_CCC_PASSIVE <- 1L
CURLGSSAPI_DELEGATION_FLAG <- 2L
CURLGSSAPI_DELEGATION_NONE <- 0L
CURLGSSAPI_DELEGATION_POLICY_FLAG <- 1L
CURLHEADER_SEPARATE <- 1L
CURLHEADER_UNIFIED <- 0L
CURLHSTS_ENABLE <- 1L
CURLHSTS_READONLYFILE <- 2L
CURLMIMEOPT_FORMESCAPE <- 1L
CURLPROXY_HTTP <- 0L
CURLPROXY_HTTP_1_0 <- 1L
CURLPROXY_HTTPS <- 2L
CURLPROXY_HTTPS2 <- 3L
CURLPROXY_SOCKS4 <- 4L
CURLPROXY_SOCKS4A <- 6L
CURLPROXY_SOCKS5 <- 5L
CURLPROXY_SOCKS5_HOSTNAME <- 7L
CURLSSH_AUTH_AGENT <- 16L
CURLSSH_AUTH_ANY <- 4294967295
CURLSSH_AUTH_DEFAULT <- 4294967295
CURLSSH_AUTH_GSSAPI <- 32L
CURLSSH_AUTH_HOST <- 4L
CURLSSH_AUTH_KEYBOARD <- 8L
CURLSSH_AUTH_NONE <- 0L
CURLSSH_AUTH_PASSWORD <- 2L
CURLSSH_AUTH_PUBLICKEY <- 1L
CURLSSLOPT_ALLOW_BEAST <- 1L
CURLSSLOPT_AUTO_CLIENT_CERT <- 32L
CURLSSLOPT_NATIVE_CA <- 16L
CURLSSLOPT_NO_PARTIALCHAIN <- 4L
CURLSSLOPT_NO_REVOKE <- 2L
CURLSSLOPT_REVOKE_BEST_EFFORT <- 8L
CURLUSESSL_ALL <- 3L
CURLUSESSL_CONTROL <- 2L
CURLUSESSL_NONE <- 0L
CURLUSESSL_TRY <- 1L
CURLWS_NOAUTOPONG <- 2L
CURLWS_RAW_MODE <- 1L
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# Generated by tools/curl-consts from <curl/curl.h> (libcurl 8.21.1):
#
# ./tools/curl-consts -N tools/option-values.txt -t
#
# These are the symbolic values for curl options, i.e. enums, macros and
# bitmask flags that libcurl expects for options of type 'long'. The numeric
# values are part of the libcurl ABI and never change, so this file does not
# depend on the version of libcurl at build or run time.
#
# Wide bitmasks that use the full 32 bits (e.g. CURLAUTH_ANY) do not fit an
# R integer and are stored as doubles, which hold these values exactly. The
# C code in R_handle_setopt converts them back to the proper long.
#' @details
#' Several curl options take an enum or bitmask value, for which the libcurl
#' manual pages give symbolic names. These constants are exported as R
#' variables, so you can copy such values literally from the libcurl
#' documentation:
#'
#' ```r
#' h <- new_handle()
#' handle_setopt(h, http_version = CURL_HTTP_VERSION_1_1)
#' handle_setopt(h, httpauth = CURLAUTH_NEGOTIATE)
#' ```
#'
#' For bitmask options, each constant is a single distinct bit, so where the
#' libcurl documentation combines flags with `|`, you can simply add them up:
#'
#' ```r
#' handle_setopt(h, httpauth = CURLAUTH_BASIC + CURLAUTH_DIGEST)
#' handle_setopt(h, altsvc_ctrl = CURLALTSVC_H1 + CURLALTSVC_H2)
#' ```
#'
#' Note that a few wide bitmasks such as `CURLAUTH_ANY` exceed the range of
#' R integers and are therefore stored as doubles, holding the exact same
#' numeric value as their C counterparts.
#'
#' The sections below list the supported options with their values, in the
#' same order as the corresponding libcurl manual pages. As usual with
#' [handle_setopt()], the R option name is the `CURLOPT_` constant, lowercase
#' and without the prefix, e.g. `CURLOPT_HTTPAUTH` becomes `httpauth`.
#'
#' # CURLOPT_ALTSVC_CTRL
#' Bitmask to enable Alt-Svc support, see
#' <https://curl.se/libcurl/c/CURLOPT_ALTSVC_CTRL.html>.
#' - `CURLALTSVC_H1`: accept alternative services offered over HTTP/1.1
#' - `CURLALTSVC_H2`: accept alternative services offered over HTTP/2
#' - `CURLALTSVC_H3`: accept alternative services offered over HTTP/3
#' - `CURLALTSVC_READONLYFILE`: do not write the alt-svc cache back to the file
#'
#' # CURLOPT_FOLLOWLOCATION
#' In addition to classic `TRUE`/`FALSE`, libcurl >= 8.13 supports these
#' modes, see <https://curl.se/libcurl/c/CURLOPT_FOLLOWLOCATION.html>.
#' - `CURLFOLLOW_ALL`: follow redirects (same as `TRUE`)
#' - `CURLFOLLOW_OBEYCODE`: follow redirects, but do not use the custom
#' method in the follow-up request when the HTTP code (301, 302, 303)
#' instructs so
#' - `CURLFOLLOW_FIRSTONLY`: only use the custom method in the first
#' request, always reset it in the next
#'
#' # CURLOPT_FTP_CREATE_MISSING_DIRS
#' See <https://curl.se/libcurl/c/CURLOPT_FTP_CREATE_MISSING_DIRS.html>.
#' - `CURLFTP_CREATE_DIR_NONE`: do not create missing directories
#' - `CURLFTP_CREATE_DIR`: create a missing directory, fail if that does not work
#' - `CURLFTP_CREATE_DIR_RETRY`: retry the CWD command again if the
#' directory could not be created, in case it was created by a third party
#' in the meantime
#'
#' # CURLOPT_FTP_FILEMETHOD
#' Select how to reach a file on an FTP(S) server, see
#' <https://curl.se/libcurl/c/CURLOPT_FTP_FILEMETHOD.html>.
#' - `CURLFTPMETHOD_DEFAULT`: let libcurl pick (same as `MULTICWD`)
#' - `CURLFTPMETHOD_MULTICWD`: a `CWD` command for each path part
#' - `CURLFTPMETHOD_NOCWD`: no `CWD` at all, use the full path in every command
#' - `CURLFTPMETHOD_SINGLECWD`: one `CWD` with the full target directory
#'
#' # CURLOPT_FTP_SSL_CCC
#' Clear Command Channel mode, see
#' <https://curl.se/libcurl/c/CURLOPT_FTP_SSL_CCC.html>.
#' - `CURLFTPSSL_CCC_NONE`: do not attempt to shut down the SSL/TLS layer
#' - `CURLFTPSSL_CCC_PASSIVE`: do not initiate the shutdown, wait for the server
#' - `CURLFTPSSL_CCC_ACTIVE`: initiate the shutdown ourselves
#'
#' # CURLOPT_FTPSSLAUTH
#' Order in which to attempt TLS vs SSL when upgrading an FTP connection, see
#' <https://curl.se/libcurl/c/CURLOPT_FTPSSLAUTH.html>.
#' - `CURLFTPAUTH_DEFAULT`: let libcurl decide
#' - `CURLFTPAUTH_SSL`: try `AUTH SSL` first
#' - `CURLFTPAUTH_TLS`: try `AUTH TLS` first
#'
#' # CURLOPT_GSSAPI_DELEGATION
#' See <https://curl.se/libcurl/c/CURLOPT_GSSAPI_DELEGATION.html>.
#' - `CURLGSSAPI_DELEGATION_NONE`: no delegation (default)
#' - `CURLGSSAPI_DELEGATION_POLICY_FLAG`: delegate if the OK-AS-DELEGATE
#' flag is set in the service ticket
#' - `CURLGSSAPI_DELEGATION_FLAG`: unconditionally allow delegation
#'
#' # CURLOPT_HEADEROPT
#' How to send custom headers to a proxy, see
#' <https://curl.se/libcurl/c/CURLOPT_HEADEROPT.html>.
#' - `CURLHEADER_UNIFIED`: the headers set with `httpheader` are also sent
#' to the proxy
#' - `CURLHEADER_SEPARATE`: only headers set with `proxyheader` are sent to
#' the proxy
#'
#' # CURLOPT_HSTS_CTRL
#' Bitmask to enable HSTS (HTTP Strict Transport Security), see
#' <https://curl.se/libcurl/c/CURLOPT_HSTS_CTRL.html>.
#' - `CURLHSTS_ENABLE`: enable the in-memory HSTS cache
#' - `CURLHSTS_READONLYFILE`: do not write the HSTS cache back to the file
#'
#' # CURLOPT_HTTP_VERSION
#' Preferred HTTP protocol version, see
#' <https://curl.se/libcurl/c/CURLOPT_HTTP_VERSION.html>.
#' - `CURL_HTTP_VERSION_NONE`: no preference, let libcurl choose (default)
#' - `CURL_HTTP_VERSION_1_0`: enforce HTTP 1.0
#' - `CURL_HTTP_VERSION_1_1`: enforce HTTP 1.1
#' - `CURL_HTTP_VERSION_2_0`: attempt HTTP 2, fall back to HTTP 1.1
#' (`CURL_HTTP_VERSION_2` is an alias)
#' - `CURL_HTTP_VERSION_2TLS`: attempt HTTP 2 for HTTPS only, HTTP 1.1 otherwise
#' - `CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE`: use HTTP 2 without HTTP/1.1 Upgrade
#' - `CURL_HTTP_VERSION_3`: attempt HTTP 3, fall back to earlier versions
#' - `CURL_HTTP_VERSION_3ONLY`: use HTTP 3 or fail
#'
#' # CURLOPT_HTTPAUTH
#' Bitmask of HTTP authentication methods libcurl may use, see
#' <https://curl.se/libcurl/c/CURLOPT_HTTPAUTH.html>. The same values apply
#' to `proxyauth`
#' ([CURLOPT_PROXYAUTH](https://curl.se/libcurl/c/CURLOPT_PROXYAUTH.html)).
#' - `CURLAUTH_NONE`: no authentication
#' - `CURLAUTH_BASIC`: HTTP Basic authentication (default)
#' - `CURLAUTH_DIGEST`: HTTP Digest authentication
#' - `CURLAUTH_DIGEST_IE`: HTTP Digest authentication with an IE flavor
#' - `CURLAUTH_BEARER`: HTTP Bearer token (OAuth 2.0) authentication
#' - `CURLAUTH_NEGOTIATE`: HTTP Negotiate (SPNEGO) authentication
#' (`CURLAUTH_GSSAPI` is an alias)
#' - `CURLAUTH_NTLM`: HTTP NTLM authentication
#' - `CURLAUTH_AWS_SIGV4`: HTTP AWS V4 signature authentication
#' - `CURLAUTH_ANY`: all supported methods, libcurl picks the most secure
#' - `CURLAUTH_ANYSAFE`: all supported methods except Basic
#' - `CURLAUTH_ONLY`: modifier bit: use only the method set alongside it,
#' e.g. `CURLAUTH_ONLY + CURLAUTH_DIGEST`
#'
#' # CURLOPT_IPRESOLVE
#' See <https://curl.se/libcurl/c/CURLOPT_IPRESOLVE.html>.
#' - `CURL_IPRESOLVE_WHATEVER`: resolve to any IP version (default)
#' - `CURL_IPRESOLVE_V4`: only use IPv4 addresses
#' - `CURL_IPRESOLVE_V6`: only use IPv6 addresses
#'
#' # CURLOPT_MIME_OPTIONS
#' See <https://curl.se/libcurl/c/CURLOPT_MIME_OPTIONS.html>.
#' - `CURLMIMEOPT_FORMESCAPE`: backslash-escape quotes and backslashes in
#' multipart form field and file names
#'
#' # CURLOPT_NETRC
#' Whether to read credentials from the `.netrc` file, see
#' <https://curl.se/libcurl/c/CURLOPT_NETRC.html>.
#' - `CURL_NETRC_IGNORED`: ignore the netrc file (default)
#' - `CURL_NETRC_OPTIONAL`: use the netrc file, but credentials in the URL
#' take precedence
#' - `CURL_NETRC_REQUIRED`: only use the netrc file, ignore credentials in
#' the URL
#'
#' # CURLOPT_POSTREDIR
#' Bitmask of redirect codes after which a POST must remain a POST, see
#' <https://curl.se/libcurl/c/CURLOPT_POSTREDIR.html>.
#' - `CURL_REDIR_POST_301`: keep the POST method after a 301 redirect
#' - `CURL_REDIR_POST_302`: keep the POST method after a 302 redirect
#' - `CURL_REDIR_POST_303`: keep the POST method after a 303 redirect
#' - `CURL_REDIR_POST_ALL`: all of the above
#' - `CURL_REDIR_GET_ALL`: convert to GET on all redirects (default)
#'
#' # CURLOPT_PROXYTYPE
#' Type of the proxy set with `proxy`, see
#' <https://curl.se/libcurl/c/CURLOPT_PROXYTYPE.html>.
#' - `CURLPROXY_HTTP`: HTTP proxy (default)
#' - `CURLPROXY_HTTPS`: HTTPS proxy using HTTP/1.x
#' - `CURLPROXY_HTTPS2`: HTTPS proxy, attempt HTTP/2
#' - `CURLPROXY_HTTP_1_0`: HTTP proxy, force HTTP 1.0
#' - `CURLPROXY_SOCKS4`: SOCKS4 proxy
#' - `CURLPROXY_SOCKS4A`: SOCKS4a proxy, proxy resolves the hostname
#' - `CURLPROXY_SOCKS5`: SOCKS5 proxy
#' - `CURLPROXY_SOCKS5_HOSTNAME`: SOCKS5 proxy, proxy resolves the hostname
#'
#' # CURLOPT_SOCKS5_AUTH
#' Bitmask of allowed methods for SOCKS5 proxy authentication, see
#' <https://curl.se/libcurl/c/CURLOPT_SOCKS5_AUTH.html>: `CURLAUTH_BASIC`
#' (username/password), `CURLAUTH_GSSAPI` and `CURLAUTH_NONE`.
#'
#' # CURLOPT_SSH_AUTH_TYPES
#' Bitmask of authentication types for SFTP/SCP connections, see
#' <https://curl.se/libcurl/c/CURLOPT_SSH_AUTH_TYPES.html>.
#' - `CURLSSH_AUTH_PUBLICKEY`: public/private key files
#' - `CURLSSH_AUTH_PASSWORD`: password
#' - `CURLSSH_AUTH_HOST`: host key files
#' - `CURLSSH_AUTH_KEYBOARD`: keyboard interactive
#' - `CURLSSH_AUTH_AGENT`: ssh-agent
#' - `CURLSSH_AUTH_GSSAPI`: gssapi (kerberos, ...)
#' - `CURLSSH_AUTH_ANY`: any method (default, `CURLSSH_AUTH_DEFAULT` is an alias)
#' - `CURLSSH_AUTH_NONE`: no allowed methods
#'
#' # CURLOPT_SSL_OPTIONS
#' Bitmask of SSL behavior options, see
#' <https://curl.se/libcurl/c/CURLOPT_SSL_OPTIONS.html>. The same values
#' apply to `proxy_ssl_options`
#' ([CURLOPT_PROXY_SSL_OPTIONS](https://curl.se/libcurl/c/CURLOPT_PROXY_SSL_OPTIONS.html)).
#' - `CURLSSLOPT_ALLOW_BEAST`: allow the BEAST SSL vulnerability for
#' interoperability reasons
#' - `CURLSSLOPT_NO_REVOKE`: disable certificate revocation checks (Schannel)
#' - `CURLSSLOPT_NO_PARTIALCHAIN`: do not accept partial certificate chains
#' - `CURLSSLOPT_REVOKE_BEST_EFFORT`: ignore revocation check failures due
#' to missing/offline distribution points (Schannel)
#' - `CURLSSLOPT_NATIVE_CA`: use the operating system's native CA store
#' - `CURLSSLOPT_AUTO_CLIENT_CERT`: automatically locate and use a client
#' certificate for authentication (Schannel)
#'
#' # CURLOPT_SSLVERSION
#' Preferred TLS/SSL version, see
#' <https://curl.se/libcurl/c/CURLOPT_SSLVERSION.html>. The same values apply
#' to `proxy_sslversion`
#' ([CURLOPT_PROXY_SSLVERSION](https://curl.se/libcurl/c/CURLOPT_PROXY_SSLVERSION.html)).
#' - `CURL_SSLVERSION_DEFAULT`: default, currently the minimum is TLS v1.0
#' - `CURL_SSLVERSION_TLSv1`: TLS v1.0 or later
#' - `CURL_SSLVERSION_TLSv1_0`: TLS v1.0 or later
#' - `CURL_SSLVERSION_TLSv1_1`: TLS v1.1 or later
#' - `CURL_SSLVERSION_TLSv1_2`: TLS v1.2 or later
#' - `CURL_SSLVERSION_TLSv1_3`: TLS v1.3 or later
#'
#' The maximum TLS version can be set by adding one of these to the value
#' above, e.g. `CURL_SSLVERSION_TLSv1_1 + CURL_SSLVERSION_MAX_TLSv1_2`:
#' - `CURL_SSLVERSION_MAX_DEFAULT`: the highest supported TLS version
#' (`CURL_SSLVERSION_MAX_NONE` has the same effect)
#' - `CURL_SSLVERSION_MAX_TLSv1_0`: at most TLS v1.0
#' - `CURL_SSLVERSION_MAX_TLSv1_1`: at most TLS v1.1
#' - `CURL_SSLVERSION_MAX_TLSv1_2`: at most TLS v1.2
#' - `CURL_SSLVERSION_MAX_TLSv1_3`: at most TLS v1.3
#'
#' # CURLOPT_TIMECONDITION
#' How to compare the `timevalue` timestamp, see
#' <https://curl.se/libcurl/c/CURLOPT_TIMECONDITION.html>.
#' - `CURL_TIMECOND_NONE`: no time condition (default)
#' - `CURL_TIMECOND_IFMODSINCE`: only transfer if modified since `timevalue`
#' - `CURL_TIMECOND_IFUNMODSINCE`: only transfer if not modified since `timevalue`
#' - `CURL_TIMECOND_LASTMOD`: (FTP only)
#'
#' # CURLOPT_USE_SSL
#' Request TLS upgrade for FTP, SMTP, POP3 and IMAP transfers, see
#' <https://curl.se/libcurl/c/CURLOPT_USE_SSL.html>.
#' - `CURLUSESSL_NONE`: do not attempt to use SSL (default)
#' - `CURLUSESSL_TRY`: try SSL, proceed as normal otherwise
#' - `CURLUSESSL_CONTROL`: require SSL for the control connection, or fail
#' - `CURLUSESSL_ALL`: require SSL for all communication, or fail
#'
#' # CURLOPT_WS_OPTIONS
#' Bitmask with websocket behavior options, see
#' <https://curl.se/libcurl/c/CURLOPT_WS_OPTIONS.html>.
#' - `CURLWS_RAW_MODE`: deliver raw websocket traffic to the write callback
#' - `CURLWS_NOAUTOPONG`: disable the automatic reply to PING frames
#' (libcurl >= 8.14)
#'
#' # Other symbols
#' The sections above cover the option values supported by [handle_setopt()].
#' Use `curl_symbols()` was previously used to lookup the value of any symbol
#' from the libcurl symbol table, along with the libcurl version in which it was
#' introduced, deprecated, or removed.
#'
#' @name curl_options
#' @rdname curl_options
#' @seealso [handle_setopt()]
#' @examples
#' # Set options using symbolic constants
#' h <- new_handle()
#' handle_setopt(h, http_version = CURL_HTTP_VERSION_1_1)
#' handle_setopt(h, httpauth = CURLAUTH_BASIC + CURLAUTH_DIGEST)
#'
#' @exportPattern ^CURL
#' @aliases CURL_HTTP_VERSION_1_0 CURL_HTTP_VERSION_1_1 CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
#' @aliases CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE CURL_HTTP_VERSION_2TLS CURL_HTTP_VERSION_3
#' @aliases CURL_HTTP_VERSION_3ONLY CURL_HTTP_VERSION_NONE CURL_IPRESOLVE_V4 CURL_IPRESOLVE_V6
#' @aliases CURL_IPRESOLVE_WHATEVER CURL_NETRC_IGNORED CURL_NETRC_OPTIONAL CURL_NETRC_REQUIRED
#' @aliases CURL_REDIR_GET_ALL CURL_REDIR_POST_301 CURL_REDIR_POST_302 CURL_REDIR_POST_303
#' @aliases CURL_REDIR_POST_ALL
#' @aliases CURL_SSLVERSION_DEFAULT CURL_SSLVERSION_MAX_DEFAULT CURL_SSLVERSION_MAX_NONE
#' @aliases CURL_SSLVERSION_MAX_TLSv1_0 CURL_SSLVERSION_MAX_TLSv1_1 CURL_SSLVERSION_MAX_TLSv1_2
#' @aliases CURL_SSLVERSION_MAX_TLSv1_3 CURL_SSLVERSION_TLSv1 CURL_SSLVERSION_TLSv1_0
#' @aliases CURL_SSLVERSION_TLSv1_1 CURL_SSLVERSION_TLSv1_2 CURL_SSLVERSION_TLSv1_3
#' @aliases CURL_TIMECOND_IFMODSINCE CURL_TIMECOND_IFUNMODSINCE CURL_TIMECOND_LASTMOD
#' @aliases CURL_TIMECOND_NONE CURLALTSVC_H1 CURLALTSVC_H2 CURLALTSVC_H3 CURLALTSVC_READONLYFILE
#' @aliases CURLAUTH_ANY CURLAUTH_ANYSAFE CURLAUTH_AWS_SIGV4 CURLAUTH_BASIC CURLAUTH_BEARER
#' @aliases CURLAUTH_DIGEST CURLAUTH_DIGEST_IE CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE CURLAUTH_NONE
#' @aliases CURLAUTH_NTLM CURLAUTH_ONLY CURLFOLLOW_ALL CURLFOLLOW_FIRSTONLY CURLFOLLOW_OBEYCODE
#' @aliases CURLFTP_CREATE_DIR CURLFTP_CREATE_DIR_NONE CURLFTP_CREATE_DIR_RETRY CURLFTPAUTH_DEFAULT
#' @aliases CURLFTPAUTH_SSL CURLFTPAUTH_TLS CURLFTPMETHOD_DEFAULT CURLFTPMETHOD_MULTICWD
#' @aliases CURLFTPMETHOD_NOCWD CURLFTPMETHOD_SINGLECWD CURLFTPSSL_CCC_ACTIVE CURLFTPSSL_CCC_NONE
#' @aliases CURLFTPSSL_CCC_PASSIVE CURLGSSAPI_DELEGATION_FLAG CURLGSSAPI_DELEGATION_NONE
#' @aliases CURLGSSAPI_DELEGATION_POLICY_FLAG CURLHEADER_SEPARATE CURLHEADER_UNIFIED CURLHSTS_ENABLE
#' @aliases CURLHSTS_READONLYFILE CURLMIMEOPT_FORMESCAPE
#' @aliases CURLPROXY_HTTP CURLPROXY_HTTP_1_0 CURLPROXY_HTTPS
#' @aliases CURLPROXY_HTTPS2 CURLPROXY_SOCKS4 CURLPROXY_SOCKS4A CURLPROXY_SOCKS5
#' @aliases CURLPROXY_SOCKS5_HOSTNAME CURLSSH_AUTH_AGENT CURLSSH_AUTH_ANY CURLSSH_AUTH_DEFAULT
#' @aliases CURLSSH_AUTH_GSSAPI CURLSSH_AUTH_HOST CURLSSH_AUTH_KEYBOARD CURLSSH_AUTH_NONE
#' @aliases CURLSSH_AUTH_PASSWORD CURLSSH_AUTH_PUBLICKEY CURLSSLOPT_ALLOW_BEAST
#' @aliases CURLSSLOPT_AUTO_CLIENT_CERT CURLSSLOPT_NATIVE_CA CURLSSLOPT_NO_PARTIALCHAIN
#' @aliases CURLSSLOPT_NO_REVOKE CURLSSLOPT_REVOKE_BEST_EFFORT CURLUSESSL_ALL CURLUSESSL_CONTROL
#' @aliases CURLUSESSL_NONE CURLUSESSL_TRY CURLWS_NOAUTOPONG CURLWS_RAW_MODE
NULL
CURL_HTTP_VERSION_1_0 <- 1L
CURL_HTTP_VERSION_1_1 <- 2L
CURL_HTTP_VERSION_2 <- 3L
CURL_HTTP_VERSION_2_0 <- 3L
CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE <- 5L
CURL_HTTP_VERSION_2TLS <- 4L
CURL_HTTP_VERSION_3 <- 30L
CURL_HTTP_VERSION_3ONLY <- 31L
CURL_HTTP_VERSION_NONE <- 0L
CURL_IPRESOLVE_V4 <- 1L
CURL_IPRESOLVE_V6 <- 2L
CURL_IPRESOLVE_WHATEVER <- 0L
CURL_NETRC_IGNORED <- 0L
CURL_NETRC_OPTIONAL <- 1L
CURL_NETRC_REQUIRED <- 2L
CURL_REDIR_GET_ALL <- 0L
CURL_REDIR_POST_301 <- 1L
CURL_REDIR_POST_302 <- 2L
CURL_REDIR_POST_303 <- 4L
CURL_REDIR_POST_ALL <- 7L
CURL_SSLVERSION_DEFAULT <- 0L
CURL_SSLVERSION_MAX_DEFAULT <- 65536L
CURL_SSLVERSION_MAX_NONE <- 0L
CURL_SSLVERSION_MAX_TLSv1_0 <- 262144L
CURL_SSLVERSION_MAX_TLSv1_1 <- 327680L
CURL_SSLVERSION_MAX_TLSv1_2 <- 393216L
CURL_SSLVERSION_MAX_TLSv1_3 <- 458752L
CURL_SSLVERSION_TLSv1 <- 1L
CURL_SSLVERSION_TLSv1_0 <- 4L
CURL_SSLVERSION_TLSv1_1 <- 5L
CURL_SSLVERSION_TLSv1_2 <- 6L
CURL_SSLVERSION_TLSv1_3 <- 7L
CURL_TIMECOND_IFMODSINCE <- 1L
CURL_TIMECOND_IFUNMODSINCE <- 2L
CURL_TIMECOND_LASTMOD <- 3L
CURL_TIMECOND_NONE <- 0L
CURLALTSVC_H1 <- 8L
CURLALTSVC_H2 <- 16L
CURLALTSVC_H3 <- 32L
CURLALTSVC_READONLYFILE <- 4L
CURLAUTH_ANY <- 4294967279
CURLAUTH_ANYSAFE <- 4294967278
CURLAUTH_AWS_SIGV4 <- 128L
CURLAUTH_BASIC <- 1L
CURLAUTH_BEARER <- 64L
CURLAUTH_DIGEST <- 2L
CURLAUTH_DIGEST_IE <- 16L
CURLAUTH_GSSAPI <- 4L
CURLAUTH_NEGOTIATE <- 4L
CURLAUTH_NONE <- 0L
CURLAUTH_NTLM <- 8L
CURLAUTH_ONLY <- 2147483648
CURLFOLLOW_ALL <- 1L
CURLFOLLOW_FIRSTONLY <- 3L
CURLFOLLOW_OBEYCODE <- 2L
CURLFTP_CREATE_DIR <- 1L
CURLFTP_CREATE_DIR_NONE <- 0L
CURLFTP_CREATE_DIR_RETRY <- 2L
CURLFTPAUTH_DEFAULT <- 0L
CURLFTPAUTH_SSL <- 1L
CURLFTPAUTH_TLS <- 2L
CURLFTPMETHOD_DEFAULT <- 0L
CURLFTPMETHOD_MULTICWD <- 1L
CURLFTPMETHOD_NOCWD <- 2L
CURLFTPMETHOD_SINGLECWD <- 3L
CURLFTPSSL_CCC_ACTIVE <- 2L
CURLFTPSSL_CCC_NONE <- 0L
CURLFTPSSL_CCC_PASSIVE <- 1L
CURLGSSAPI_DELEGATION_FLAG <- 2L
CURLGSSAPI_DELEGATION_NONE <- 0L
CURLGSSAPI_DELEGATION_POLICY_FLAG <- 1L
CURLHEADER_SEPARATE <- 1L
CURLHEADER_UNIFIED <- 0L
CURLHSTS_ENABLE <- 1L
CURLHSTS_READONLYFILE <- 2L
CURLMIMEOPT_FORMESCAPE <- 1L
CURLPROXY_HTTP <- 0L
CURLPROXY_HTTP_1_0 <- 1L
CURLPROXY_HTTPS <- 2L
CURLPROXY_HTTPS2 <- 3L
CURLPROXY_SOCKS4 <- 4L
CURLPROXY_SOCKS4A <- 6L
CURLPROXY_SOCKS5 <- 5L
CURLPROXY_SOCKS5_HOSTNAME <- 7L
CURLSSH_AUTH_AGENT <- 16L
CURLSSH_AUTH_ANY <- 4294967295
CURLSSH_AUTH_DEFAULT <- 4294967295
CURLSSH_AUTH_GSSAPI <- 32L
CURLSSH_AUTH_HOST <- 4L
CURLSSH_AUTH_KEYBOARD <- 8L
CURLSSH_AUTH_NONE <- 0L
CURLSSH_AUTH_PASSWORD <- 2L
CURLSSH_AUTH_PUBLICKEY <- 1L
CURLSSLOPT_ALLOW_BEAST <- 1L
CURLSSLOPT_AUTO_CLIENT_CERT <- 32L
CURLSSLOPT_NATIVE_CA <- 16L
CURLSSLOPT_NO_PARTIALCHAIN <- 4L
CURLSSLOPT_NO_REVOKE <- 2L
CURLSSLOPT_REVOKE_BEST_EFFORT <- 8L
CURLUSESSL_ALL <- 3L
CURLUSESSL_CONTROL <- 2L
CURLUSESSL_NONE <- 0L
CURLUSESSL_TRY <- 1L
CURLWS_NOAUTOPONG <- 2L
CURLWS_RAW_MODE <- 1L
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