libcurl-symbols(3)

💖 libcurl symbols 💖

libcurl-symbols(3) · Library Functions Manual

Okay bestie, this man page is literally the master version-info list for the public symbols provided in the libcurl header files ✨. It tells you the first version each symbol was introduced in, and for some symbols you also get two extra lil pieces of info:

• The first version where the symbol is marked “deprecated” — meaning that since that version, no new code should be written to use the symbol, because it’s marked for getting removed in a future 💀.
• The last version that featured that specific symbol — using the symbol in source code makes it no longer compile error-free after that specified version 😭.

This man page is automatically generated from the symbols-in-versions file. Iconic behavior, honestly 🫶.

---

• CURL_AT_LEAST_VERSION — Introduced in 7.43.0.
• CURL_BLOB_COPY — Introduced in 7.71.0.
• CURL_BLOB_NOCOPY — Introduced in 7.71.0.
• CURL_CHUNK_BGN_FUNC_FAIL — Introduced in 7.21.0. See CURLOPT_CHUNK_BGN_FUNCTION(3).
• CURL_CHUNK_BGN_FUNC_OK — Introduced in 7.21.0. See CURLOPT_CHUNK_BGN_FUNCTION(3).
• CURL_CHUNK_BGN_FUNC_SKIP — Introduced in 7.21.0. See CURLOPT_CHUNK_BGN_FUNCTION(3).
• CURL_CHUNK_END_FUNC_FAIL — Introduced in 7.21.0. See CURLOPT_CHUNK_END_FUNCTION(3).
• CURL_CHUNK_END_FUNC_OK — Introduced in 7.21.0. See CURLOPT_CHUNK_END_FUNCTION(3).
• CURL_CSELECT_ERR — Introduced in 7.16.3. See curl_multi_socket_action(3).
• CURL_CSELECT_IN — Introduced in 7.16.3. See curl_multi_socket_action(3).
• CURL_CSELECT_OUT — Introduced in 7.16.3. See curl_multi_socket_action(3).
• CURL_DEPRECATED — Introduced in 7.87.0.
• CURL_DID_MEMORY_FUNC_TYPEDEFS — Introduced in 7.49.0.
• CURL_EASY_NONE — Introduced in 7.14.0. Last used in 7.15.4.
• CURL_EASY_TIMEOUT — Introduced in 7.14.0. Last used in 7.15.4.
• CURL_ERROR_SIZE — Introduced in 7.1.
• CURL_FNMATCHFUNC_FAIL — Introduced in 7.21.0. See CURLOPT_FNMATCH_FUNCTION(3).
• CURL_FNMATCHFUNC_MATCH — Introduced in 7.21.0. See CURLOPT_FNMATCH_FUNCTION(3).
• CURL_FNMATCHFUNC_NOMATCH — Introduced in 7.21.0. See CURLOPT_FNMATCH_FUNCTION(3).
• CURL_FORMADD_DISABLED — Introduced in 7.12.1. Deprecated since 7.56.0.
• CURL_FORMADD_ILLEGAL_ARRAY — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_INCOMPLETE — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_MEMORY — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_NULL — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_OK — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_OPTION_TWICE — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_FORMADD_UNKNOWN_OPTION — Introduced in 7.9.8. Deprecated since 7.56.0.
• CURL_GLOBAL_ACK_EINTR — Introduced in 7.30.0. See curl_global_init(3).
• CURL_GLOBAL_ALL — Introduced in 7.8. See curl_global_init(3).
• CURL_GLOBAL_DEFAULT — Introduced in 7.8. See curl_global_init(3).
• CURL_GLOBAL_NOTHING — Introduced in 7.8. See curl_global_init(3).
• CURL_GLOBAL_SSL — Introduced in 7.8. See curl_global_init(3).
• CURL_GLOBAL_WIN32 — Introduced in 7.8.1. See curl_global_init(3).
• CURL_HAS_DECLSPEC_ATTRIBUTE — Introduced in 8.13.0.
• CURL_HET_DEFAULT — Introduced in 7.59.0. See CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS(3).
• CURL_HTTP_VERSION_1_0 — Introduced in 7.9.1. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_1_1 — Introduced in 7.9.1. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_2 — Introduced in 7.43.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_2_0 — Introduced in 7.33.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE — Introduced in 7.49.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_2TLS — Introduced in 7.47.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_3 — Introduced in 7.66.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_3ONLY — Introduced in 7.88.0. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTP_VERSION_NONE — Introduced in 7.9.1. See CURLOPT_HTTP_VERSION(3).
• CURL_HTTPPOST_BUFFER — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_CALLBACK — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_FILENAME — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_LARGE — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_PTRBUFFER — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_PTRCONTENTS — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_PTRNAME — Introduced in 7.46.0. See curl_formadd(3).
• CURL_HTTPPOST_READFILE — Introduced in 7.46.0. See curl_formadd(3).
• CURL_IGNORE_DEPRECATION — Introduced in 7.87.0.
• CURL_IPRESOLVE_V4 — Introduced in 7.10.8. See CURLOPT_IPRESOLVE(3).
• CURL_IPRESOLVE_V6 — Introduced in 7.10.8. See CURLOPT_IPRESOLVE(3).
• CURL_IPRESOLVE_WHATEVER — Introduced in 7.10.8. See CURLOPT_IPRESOLVE(3).
• CURL_ISOCPP — Introduced in 7.10.2. Last used in 8.14.1.
• CURL_LOCK_ACCESS_NONE — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_ACCESS_SHARED — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_ACCESS_SINGLE — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_CONNECT — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_COOKIE — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_DNS — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_HSTS — Introduced in 7.88.0. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_NONE — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_PSL — Introduced in 7.61.0. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_SHARE — Introduced in 7.10.4. See CURLSHOPT_SHARE(3).
• CURL_LOCK_DATA_SSL_SESSION — Introduced in 7.10.3. See CURLSHOPT_SHARE(3).
• CURL_LOCK_TYPE_CONNECT — Introduced in 7.10. Last used in 7.10.2.
• CURL_LOCK_TYPE_COOKIE — Introduced in 7.10. Last used in 7.10.2.
• CURL_LOCK_TYPE_DNS — Introduced in 7.10. Last used in 7.10.2.
• CURL_LOCK_TYPE_NONE — Introduced in 7.10. Last used in 7.10.2.
• CURL_LOCK_TYPE_SSL_SESSION — Introduced in 7.10. Last used in 7.10.2.
• CURL_MAX_HTTP_HEADER — Introduced in 7.19.7.
• CURL_MAX_READ_SIZE — Introduced in 7.53.0.
• CURL_MAX_WRITE_SIZE — Introduced in 7.9.7.
• CURL_NETRC_IGNORED — Introduced in 7.9.8.
• CURL_NETRC_OPTIONAL — Introduced in 7.9.8.
• CURL_NETRC_REQUIRED — Introduced in 7.9.8.
• CURL_POLL_IN — Introduced in 7.14.0. See CURLMOPT_SOCKETFUNCTION(3).
• CURL_POLL_INOUT — Introduced in 7.14.0. See CURLMOPT_SOCKETFUNCTION(3).
• CURL_POLL_NONE — Introduced in 7.14.0. See CURLMOPT_SOCKETFUNCTION(3).
• CURL_POLL_OUT — Introduced in 7.14.0. See CURLMOPT_SOCKETFUNCTION(3).
• CURL_POLL_REMOVE — Introduced in 7.14.0. See CURLMOPT_SOCKETFUNCTION(3).
• CURL_PREREQFUNC_ABORT — Introduced in 7.79.0.
• CURL_PREREQFUNC_OK — Introduced in 7.79.0.
• CURL_PROGRESS_BAR — Introduced in 7.1.1. Last used in 7.4.1.
• CURL_PROGRESS_STATS — Introduced in 7.1.1. Last used in 7.4.1.
• CURL_PROGRESSFUNC_CONTINUE — Introduced in 7.68.0.
• CURL_PULL_SYS_POLL_H — Introduced in 7.56.0.
• CURL_PUSH_DENY — Introduced in 7.44.0.
• CURL_PUSH_ERROROUT — Introduced in 7.72.0.
• CURL_PUSH_OK — Introduced in 7.44.0.
• CURL_READFUNC_ABORT — Introduced in 7.12.1.
• CURL_READFUNC_PAUSE — Introduced in 7.18.0.
• CURL_REDIR_GET_ALL — Introduced in 7.19.1.
• CURL_REDIR_POST_301 — Introduced in 7.19.1. See CURLOPT_POSTREDIR(3).
• CURL_REDIR_POST_302 — Introduced in 7.19.1. See CURLOPT_POSTREDIR(3).
• CURL_REDIR_POST_303 — Introduced in 7.26.0. See CURLOPT_POSTREDIR(3).
• CURL_REDIR_POST_ALL — Introduced in 7.19.1. See CURLOPT_POSTREDIR(3).
• CURL_RTSPREQ_ANNOUNCE — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_DESCRIBE — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_GET_PARAMETER — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_NONE — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_OPTIONS — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_PAUSE — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_PLAY — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_RECEIVE — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_RECORD — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_SET_PARAMETER — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_SETUP — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_RTSPREQ_TEARDOWN — Introduced in 7.20.0. See CURLOPT_RTSP_REQUEST(3).
• CURL_SEEKFUNC_CANTSEEK — Introduced in 7.19.5. See CURLOPT_SEEKFUNCTION(3).
• CURL_SEEKFUNC_FAIL — Introduced in 7.19.5. See CURLOPT_SEEKFUNCTION(3).
• CURL_SEEKFUNC_OK — Introduced in 7.19.5. See CURLOPT_SEEKFUNCTION(3).
• CURL_SOCKET_BAD — Introduced in 7.14.0.
• CURL_SOCKET_TIMEOUT — Introduced in 7.14.0.
• CURL_SOCKOPT_ALREADY_CONNECTED — Introduced in 7.21.5.
• CURL_SOCKOPT_ERROR — Introduced in 7.21.5.
• CURL_SOCKOPT_OK — Introduced in 7.21.5.
• CURL_SSLVERSION_DEFAULT — Introduced in 7.9.2. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_DEFAULT — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_NONE — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_TLSv1_0 — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_TLSv1_1 — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_TLSv1_2 — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_MAX_TLSv1_3 — Introduced in 7.54.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_SSLv2 — Introduced in 7.9.2. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_SSLv3 — Introduced in 7.9.2. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_TLSv1 — Introduced in 7.9.2. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_TLSv1_0 — dropped in 7.34.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_TLSv1_1 — dropped in 7.34.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_TLSv1_2 — dropped in 7.34.0. See CURLOPT_SSLVERSION(3).
• CURL_SSLVERSION_TLSv1_3 — dropped in 7.52.0. See CURLOPT_SSLVERSION(3).

okay those four are literally just the TLS generations, oldest to freshest, and yes 1.3 is the icon of the group 💅

• CURL_STRICTER — dropped in 7.50.2.
• CURL_TIMECOND_IFMODSINCE — dropped in 7.9.7. See CURLOPT_TIMECONDITION(3).
• CURL_TIMECOND_IFUNMODSINCE — dropped in 7.9.7. See CURLOPT_TIMECONDITION(3).
• CURL_TIMECOND_LASTMOD — dropped in 7.9.7. See CURLOPT_TIMECONDITION(3).
• CURL_TIMECOND_NONE — dropped in 7.9.7. See CURLOPT_TIMECONDITION(3).
• CURL_TLSAUTH_NONE — dropped in 7.21.4.
• CURL_TLSAUTH_SRP — dropped in 7.21.4.
• CURL_TRAILERFUNC_ABORT — dropped in 7.64.0. See CURLOPT_TRAILERFUNCTION(3).
• CURL_TRAILERFUNC_OK — dropped in 7.64.0. See CURLOPT_TRAILERFUNCTION(3).
• CURL_UPKEEP_INTERVAL_DEFAULT — dropped in 7.62.0.

---

🦋 the CURL_VERSION_* era, aka the version-bits cinematic universe

these are the little flags that curl_version_info(3) hands you so you can vibe-check what your libcurl was actually built with. most of them point at that page, fr fr.

• CURL_VERSION_ALTSVC — dropped in 7.64.1. See curl_version_info(3).
• CURL_VERSION_ASYNCHDNS — dropped in 7.10.7. See curl_version_info(3).
• CURL_VERSION_BITS — dropped in 7.43.0. See curl_version_info(3).
• CURL_VERSION_BROTLI — dropped in 7.57.0. See curl_version_info(3).
• CURL_VERSION_CONV — dropped in 7.15.4. See curl_version_info(3).
• CURL_VERSION_CURLDEBUG — dropped in 7.19.6. See curl_version_info(3).
• CURL_VERSION_DEBUG — dropped in 7.10.6. See curl_version_info(3).
• CURL_VERSION_GSASL — dropped in 7.76.0. See curl_version_info(3).
• CURL_VERSION_GSSAPI — dropped in 7.38.0. See curl_version_info(3).
• CURL_VERSION_GSSNEGOTIATE — dropped in 7.10.6. Deprecated since 7.38.0.
• CURL_VERSION_HSTS — dropped in 7.74.0. See curl_version_info(3).
• CURL_VERSION_HTTP2 — dropped in 7.33.0. See curl_version_info(3).
• CURL_VERSION_HTTP3 — dropped in 7.66.0. See curl_version_info(3).
• CURL_VERSION_HTTPS_PROXY — dropped in 7.52.0. See curl_version_info(3).
• CURL_VERSION_IDN — dropped in 7.12.0. See curl_version_info(3).
• CURL_VERSION_IPV6 — dropped in 7.10. See curl_version_info(3).
• CURL_VERSION_KERBEROS4 — dropped in 7.10. Deprecated since 7.33.0.
• CURL_VERSION_KERBEROS5 — dropped in 7.40.0. See curl_version_info(3).
• CURL_VERSION_LARGEFILE — dropped in 7.11.1. See curl_version_info(3).
• CURL_VERSION_LIBZ — dropped in 7.10. See curl_version_info(3).
• CURL_VERSION_MULTI_SSL — dropped in 7.56.0. See curl_version_info(3).
• CURL_VERSION_NTLM — dropped in 7.10.6. See curl_version_info(3).
• CURL_VERSION_NTLM_WB — dropped in 7.22.0. Deprecated since 8.8.0.
• CURL_VERSION_PSL — dropped in 7.47.0. See curl_version_info(3).
• CURL_VERSION_SPNEGO — dropped in 7.10.8. See curl_version_info(3).
• CURL_VERSION_SSL — dropped in 7.10. See curl_version_info(3).
• CURL_VERSION_SSPI — dropped in 7.13.2. See curl_version_info(3).
• CURL_VERSION_THREADSAFE — dropped in 7.84.0. See curl_version_info(3).
• CURL_VERSION_TLSAUTH_SRP — dropped in 7.21.4. See curl_version_info(3).
• CURL_VERSION_UNICODE — dropped in 7.72.0. See curl_version_info(3).
• CURL_VERSION_UNIX_SOCKETS — dropped in 7.40.0. See curl_version_info(3).
• CURL_VERSION_ZSTD — dropped in 7.72.0. See curl_version_info(3).

heads up bestie: CURL_VERSION_GSSNEGOTIATE and CURL_VERSION_NTLM_WB are the two here that got the deprecated stamp — not removed, just old news, iykyk.

---

✨ misc flags, wait-status bits, and the rest

• CURL_WAIT_POLLIN — dropped in 7.28.0.
• CURL_WAIT_POLLOUT — dropped in 7.28.0.
• CURL_WAIT_POLLPRI — dropped in 7.28.0.
• CURL_WIN32 — dropped in 7.69.0. Last used in 8.5.0. (not "deprecated since" — the page literally says last used, so don't come for me 🫶)
• CURL_WRITEFUNC_ERROR — dropped in 7.87.0.
• CURL_WRITEFUNC_PAUSE — dropped in 7.18.0.
• CURL_ZERO_TERMINATED — dropped in 7.56.0.

---

🎀 CURLALTSVC_* — the alt-svc squad

• CURLALTSVC_H1 — dropped in 7.64.1. See CURLOPT_ALTSVC_CTRL(3).
• CURLALTSVC_H2 — dropped in 7.64.1. See CURLOPT_ALTSVC_CTRL(3).
• CURLALTSVC_H3 — dropped in 7.64.1. See CURLOPT_ALTSVC_CTRL(3).
• CURLALTSVC_READONLYFILE — dropped in 7.64.1. See CURLOPT_ALTSVC_CTRL(3).

all four landed in the same version, 7.64.1, which is honestly such a coordinated-drop moment of them 👑

---

🔥 CURLAUTH_* — auth methods, the whole roster

• CURLAUTH_ANY — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_ANYSAFE — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_AWS_SIGV4 — dropped in 7.75.0. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_BASIC — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_BEARER — dropped in 7.61.0. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_DIGEST — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_DIGEST_IE — dropped in 7.19.3. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_GSSAPI — dropped in 7.55.0. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_GSSNEGOTIATE — dropped in 7.10.6. Deprecated since 7.38.0.
• CURLAUTH_NEGOTIATE — dropped in 7.38.0. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_NONE — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_NTLM — dropped in 7.10.6. See CURLOPT_HTTPAUTH(3).
• CURLAUTH_NTLM_WB — dropped in 7.22.0. Deprecated since 8.8.0.
• CURLAUTH_ONLY — dropped in 7.21.3. See CURLOPT_HTTPAUTH(3).

note bestie: CURLAUTH_GSSNEGOTIATE and CURLAUTH_NTLM_WB are the deprecated girlies here, and they don't even get a "See" line. everyone else points at CURLOPT_HTTPAUTH(3).

---

💀 CURLCLOSEPOLICY_* — the whole set is deprecated, periodt

• CURLCLOSEPOLICY_CALLBACK — dropped in 7.7. Deprecated since 7.16.1.
• CURLCLOSEPOLICY_LEAST_RECENTLY_USED — dropped in 7.7. Deprecated since 7.16.1.
• CURLCLOSEPOLICY_LEAST_TRAFFIC — dropped in 7.7. Deprecated since 7.16.1.
• CURLCLOSEPOLICY_NONE — dropped in 7.7. Deprecated since 7.16.1.
• CURLCLOSEPOLICY_OLDEST — dropped in 7.7. Deprecated since 7.16.1.
• CURLCLOSEPOLICY_SLOWEST — dropped in 7.7. Deprecated since 7.16.1.

every single one of these is deprecated since 7.16.1. the whole squad retired together, it's giving group graduation 😭

---

🌈 CURLE_* — the error code saga begins

okay this is the big one, the error-code lineup. a bunch of these point you at libcurl-errors(3) for the full story — go read it, it's the lore. the deprecated ones keep their stamp exactly as written.

• CURLE_ABORTED_BY_CALLBACK — dropped in 7.1. See libcurl-errors(3).
• CURLE_AGAIN — dropped in 7.18.2. See libcurl-errors(3).
• CURLE_ALREADY_COMPLETE — dropped in 7.7.2. Deprecated since 7.8.
• CURLE_AUTH_ERROR — dropped in 7.66.0. See libcurl-errors(3).
• CURLE_BAD_CALLING_ORDER — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_BAD_CONTENT_ENCODING — dropped in 7.10. See libcurl-errors(3).
• CURLE_BAD_DOWNLOAD_RESUME — dropped in 7.10. See libcurl-errors(3).
• CURLE_BAD_FUNCTION_ARGUMENT — dropped in 7.1. See libcurl-errors(3).
• CURLE_BAD_PASSWORD_ENTERED — dropped in 7.4.2. Deprecated since 7.17.0.
• CURLE_CHUNK_FAILED — dropped in 7.21.0. See libcurl-errors(3).
• CURLE_CONV_FAILED — dropped in 7.15.4. Deprecated since 7.82.0.
• CURLE_CONV_REQD — dropped in 7.15.4. Deprecated since 7.82.0.
• CURLE_COULDNT_CONNECT — dropped in 7.1. See libcurl-errors(3).
• CURLE_COULDNT_RESOLVE_HOST — dropped in 7.1. See libcurl-errors(3).
• CURLE_COULDNT_RESOLVE_PROXY — dropped in 7.1. See libcurl-errors(3).
• CURLE_ECH_REQUIRED — dropped in 8.8.0. See libcurl-errors(3).
• CURLE_FAILED_INIT — dropped in 7.1. See libcurl-errors(3).
• CURLE_FILE_COULDNT_READ_FILE — dropped in 7.1. See libcurl-errors(3).
• CURLE_FILESIZE_EXCEEDED — dropped in 7.10.8. See libcurl-errors(3).
• CURLE_FTP_ACCEPT_FAILED — dropped in 7.24.0. See libcurl-errors(3).
• CURLE_FTP_ACCEPT_TIMEOUT — dropped in 7.24.0. See libcurl-errors(3).
• CURLE_FTP_ACCESS_DENIED — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_BAD_DOWNLOAD_RESUME — dropped in 7.1. Deprecated since 7.1. (yes the same version, no I'm not joking 💀)
• CURLE_FTP_BAD_FILE_LIST — dropped in 7.21.0. See libcurl-errors(3).
• CURLE_FTP_CANT_GET_HOST — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_CANT_RECONNECT — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_COULDNT_GET_SIZE — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_COULDNT_RETR_FILE — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_COULDNT_SET_ASCII — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_COULDNT_SET_BINARY — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_COULDNT_SET_TYPE — dropped in 7.17.0. See libcurl-errors(3).
• CURLE_FTP_COULDNT_STOR_FILE — dropped in 7.1. Deprecated since 7.16.3.
• CURLE_FTP_COULDNT_USE_REST — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_PARTIAL_FILE — dropped in 7.1. Deprecated since 7.1.
• CURLE_FTP_PORT_FAILED — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_PRET_FAILED — dropped in 7.20.0. See libcurl-errors(3).
• CURLE_FTP_QUOTE_ERROR — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_SSL_FAILED — dropped in 7.11.0. Deprecated since 7.17.0.
• CURLE_FTP_USER_PASSWORD_INCORRECT — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_WEIRD_227_FORMAT — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_WEIRD_PASS_REPLY — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_WEIRD_PASV_REPLY — dropped in 7.1. See libcurl-errors(3).
• CURLE_FTP_WEIRD_SERVER_REPLY — dropped in 7.1. Deprecated since 7.51.0.
• CURLE_FTP_WEIRD_USER_REPLY — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FTP_WRITE_ERROR — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_FUNCTION_NOT_FOUND — dropped in 7.1. Deprecated since 7.53.0.
• CURLE_GOT_NOTHING — dropped in 7.9.1. See libcurl-errors(3).
• CURLE_HTTP2 — dropped in 7.38.0. See libcurl-errors(3).
• CURLE_HTTP2_STREAM — dropped in 7.49.0. See libcurl-errors(3).
• CURLE_HTTP3 — dropped in 7.68.0. See libcurl-errors(3).
• CURLE_HTTP_NOT_FOUND — dropped in 7.1. Deprecated since 7.10.3.
• CURLE_HTTP_PORT_FAILED — dropped in 7.3. Deprecated since 7.12.0.
• CURLE_HTTP_POST_ERROR — dropped in 7.1. Deprecated since 7.56.0.
• CURLE_HTTP_RANGE_ERROR — dropped in 7.1. Deprecated since 7.17.0.
• CURLE_HTTP_RETURNED_ERROR — dropped in 7.10.3. See libcurl-errors(3).
• CURLE_INTERFACE_FAILED — dropped in 7.12.0. See libcurl-errors(3).
• CURLE_LDAP_CANNOT_BIND — dropped in 7.1. See libcurl-errors(3).
• CURLE_LDAP_INVALID_URL — dropped in 7.10.8. Deprecated since 7.82.0.
• CURLE_LDAP_SEARCH_FAILED — dropped in 7.1. See libcurl-errors(3).

and the list literally keeps going bestie, keep scrolling 💖

• CURLE_LIBRARY_NOT_FOUND — showed up in 7.1, and it's been deprecated since 7.17.0 💀 bestie don't use it.
• CURLE_LOGIN_DENIED — showed up in 7.13.1. like, they said no to your login. see libcurl-errors(3) for the whole story 🫶
• CURLE_MALFORMAT_USER — showed up in 7.1, deprecated since 7.17.0 🙈
• CURLE_NO_CONNECTION_AVAILABLE — showed up in 7.30.0. full deets in libcurl-errors(3) ✨
• CURLE_NOT_BUILT_IN — showed up in 7.21.5. libcurl-errors(3) has the tea ☕
• CURLE_OK — showed up in 7.1. this is the good one, the icon, the main character. libcurl-errors(3) 👑
• CURLE_OPERATION_TIMEDOUT — showed up in 7.10.2. libcurl-errors(3) 🕐
• CURLE_OPERATION_TIMEOUTED — showed up in 7.1, deprecated since 7.17.0 (yes the typo one, it's retired) 😭
• CURLE_OUT_OF_MEMORY — showed up in 7.1. libcurl-errors(3) — we've all been there 💀
• CURLE_PARTIAL_FILE — showed up in 7.1. libcurl-errors(3) 🌸
• CURLE_PEER_FAILED_VERIFICATION — showed up in 7.17.1. libcurl-errors(3) 🔒
• CURLE_PROXY — showed up in 7.73.0. libcurl-errors(3) 🦋
• CURLE_QUIC_CONNECT_ERROR — showed up in 7.69.0. libcurl-errors(3) ⚡
• CURLE_QUOTE_ERROR — showed up in 7.17.0. libcurl-errors(3) 🎀
• CURLE_RANGE_ERROR — showed up in 7.17.0. libcurl-errors(3) 📏
• CURLE_READ_ERROR — showed up in 7.1. libcurl-errors(3) 📖
• CURLE_RECURSIVE_API_CALL — showed up in 7.59.0. libcurl-errors(3) — it's giving "call inside a call inside a call" 🌀
• CURLE_RECV_ERROR — showed up in 7.10. libcurl-errors(3) 📡
• CURLE_REMOTE_ACCESS_DENIED — showed up in 7.17.0. libcurl-errors(3) 🚫
• CURLE_REMOTE_DISK_FULL — showed up in 7.17.0. libcurl-errors(3) 💾
• CURLE_REMOTE_FILE_EXISTS — showed up in 7.17.0. libcurl-errors(3) 📁
• CURLE_REMOTE_FILE_NOT_FOUND — showed up in 7.16.1. libcurl-errors(3) 🔍
• CURLE_RTSP_CSEQ_ERROR — showed up in 7.20.0. libcurl-errors(3) 🎬
• CURLE_RTSP_SESSION_ERROR — showed up in 7.20.0. libcurl-errors(3) 🎥
• CURLE_SEND_ERROR — showed up in 7.10. libcurl-errors(3) 📤
• CURLE_SEND_FAIL_REWIND — showed up in 7.12.3. libcurl-errors(3) ⏪
• CURLE_SETOPT_OPTION_SYNTAX — showed up in 7.78.0. libcurl-errors(3) 📝
• CURLE_SHARE_IN_USE — showed up in 7.9.6, deprecated since 7.17.0 🫠
• CURLE_SSH — showed up in 7.16.1. libcurl-errors(3) 🐚
• CURLE_SSL_CACERT — showed up in 7.10, deprecated since 7.62.0 💅
• CURLE_SSL_CACERT_BADFILE — showed up in 7.16.0. libcurl-errors(3) 📄
• CURLE_SSL_CERTPROBLEM — showed up in 7.10. libcurl-errors(3) 🪪
• CURLE_SSL_CIPHER — showed up in 7.10. libcurl-errors(3) 🔐
• CURLE_SSL_CLIENTCERT — showed up in 7.77.0. libcurl-errors(3) 🪪✨
• CURLE_SSL_CONNECT_ERROR — showed up in 7.1. libcurl-errors(3) 🤝
• CURLE_SSL_CRL_BADFILE — showed up in 7.19.0. libcurl-errors(3) 📃
• CURLE_SSL_ENGINE_INITFAILED — showed up in 7.12.3. libcurl-errors(3) 🔧
• CURLE_SSL_ENGINE_NOTFOUND — showed up in 7.9.3. libcurl-errors(3) 🔎
• CURLE_SSL_ENGINE_SETFAILED — showed up in 7.9.3. libcurl-errors(3) ⚙️
• CURLE_SSL_INVALIDCERTSTATUS — showed up in 7.41.0. libcurl-errors(3) 📛
• CURLE_SSL_ISSUER_ERROR — showed up in 7.19.0. libcurl-errors(3) 🏷️
• CURLE_SSL_PEER_CERTIFICATE — showed up in 7.8, deprecated since 7.17.1 😮‍💨
• CURLE_SSL_PINNEDPUBKEYNOTMATCH — showed up in 7.39.0. libcurl-errors(3) 📌
• CURLE_SSL_SHUTDOWN_FAILED — showed up in 7.16.1. libcurl-errors(3) 🚪
• CURLE_TELNET_OPTION_SYNTAX — showed up in 7.7, deprecated since 7.78.0 🫡
• CURLE_TFTP_DISKFULL — showed up in 7.15.0, deprecated since 7.17.0 🗄️
• CURLE_TFTP_EXISTS — showed up in 7.15.0, deprecated since 7.17.0 📂
• CURLE_TFTP_ILLEGAL — showed up in 7.15.0. libcurl-errors(3) 🚨
• CURLE_TFTP_NOSUCHUSER — showed up in 7.15.0. libcurl-errors(3) 👤
• CURLE_TFTP_NOTFOUND — showed up in 7.15.0. libcurl-errors(3) 🕵️
• CURLE_TFTP_PERM — showed up in 7.15.0. libcurl-errors(3) 🔑
• CURLE_TFTP_UNKNOWNID — showed up in 7.15.0. libcurl-errors(3) ❓
• CURLE_TOO_LARGE — showed up in 8.6.0. libcurl-errors(3) 🐘
• CURLE_TOO_MANY_REDIRECTS — showed up in 7.5. libcurl-errors(3) 🔁
• CURLE_UNKNOWN_OPTION — showed up in 7.21.5. libcurl-errors(3) 🤔
• CURLE_UNKNOWN_TELNET_OPTION — showed up in 7.7, deprecated since 7.21.5 🪫
• CURLE_UNRECOVERABLE_POLL — showed up in 7.84.0. libcurl-errors(3) 💥
• CURLE_UNSUPPORTED_PROTOCOL — showed up in 7.1. libcurl-errors(3) 🚫
• CURLE_UPLOAD_FAILED — showed up in 7.16.3. libcurl-errors(3) 📥
• CURLE_URL_MALFORMAT — showed up in 7.1. libcurl-errors(3) 🔗
• CURLE_URL_MALFORMAT_USER — showed up in 7.1, deprecated since 7.17.0 🙅
• CURLE_USE_SSL_FAILED — showed up in 7.17.0. libcurl-errors(3) 🛡️
• CURLE_WEIRD_SERVER_REPLY — showed up in 7.51.0. libcurl-errors(3) — honestly the name is so real, servers are weird 😭
• CURLE_WRITE_ERROR — showed up in 7.1. libcurl-errors(3) ✍️

---

okay bestie we're moving into file types now, CURLFILETYPE_*, and every single one of these is an 7.21.0 girlie pointing you at CURLOPT_CHUNK_BGN_FUNCTION(3) 💖

• CURLFILETYPE_DEVICE_BLOCK — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 💽
• CURLFILETYPE_DEVICE_CHAR — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🔌
• CURLFILETYPE_DIRECTORY — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 📁
• CURLFILETYPE_DOOR — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🚪
• CURLFILETYPE_FILE — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 📄
• CURLFILETYPE_NAMEDPIPE — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🧪
• CURLFILETYPE_SOCKET — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🧦
• CURLFILETYPE_SYMLINK — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🔗
• CURLFILETYPE_UNKNOWN — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) ❔

and the CURLFINFOFLAG_* crew, also all 7.21.0, also all pointing at CURLOPT_CHUNK_BGN_FUNCTION(3) ✨

• CURLFINFOFLAG_KNOWN_FILENAME — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🏷️
• CURLFINFOFLAG_KNOWN_FILETYPE — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🗂️
• CURLFINFOFLAG_KNOWN_GID — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 👥
• CURLFINFOFLAG_KNOWN_HLINKCOUNT — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🔗
• CURLFINFOFLAG_KNOWN_PERM — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🔐
• CURLFINFOFLAG_KNOWN_SIZE — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 📏
• CURLFINFOFLAG_KNOWN_TIME — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) ⏰
• CURLFINFOFLAG_KNOWN_UID — showed up in 7.21.0. CURLOPT_CHUNK_BGN_FUNCTION(3) 🧑

---

• CURLFOLLOW_ALL — showed up in 8.13.0 👑
• CURLFOLLOW_FIRSTONLY — showed up in 8.13.0 🥇
• CURLFOLLOW_OBEYCODE — showed up in 8.13.0 📜

---

okay now the CURLFORM_* section and it is officially a deprecated era — huge chunk of these got retired in 7.56.0 💀 we're just documenting them, not endorsing them, bestie 🫶

• CURLFORM_ARRAY — showed up in 7.9.1, deprecated since 7.56.0 🗃️
• CURLFORM_ARRAY_END — showed up in 7.9.1, deprecated since 7.9.5 (yes it got deprecated like four days later basically) 😭
• CURLFORM_ARRAY_START — showed up in 7.9.1, deprecated since 7.9.5 🙈
• CURLFORM_BUFFER — showed up in 7.9.8, deprecated since 7.56.0 🧺
• CURLFORM_BUFFERLENGTH — showed up in 7.9.8, deprecated since 7.56.0 📐
• CURLFORM_BUFFERPTR — showed up in 7.9.8, deprecated since 7.56.0 👉
• CURLFORM_CONTENTHEADER — showed up in 7.9.3, deprecated since 7.56.0 📋
• CURLFORM_CONTENTLEN — showed up in 7.46.0, deprecated since 7.56.0 📏
• CURLFORM_CONTENTSLENGTH — showed up in 7.9, deprecated since 7.56.0 📏
• CURLFORM_CONTENTTYPE — showed up in 7.9, deprecated since 7.56.0 🏷️
• CURLFORM_COPYCONTENTS — showed up in 7.9, deprecated since 7.56.0 📋
• CURLFORM_COPYNAME — showed up in 7.9, deprecated since 7.56.0 📝
• CURLFORM_END — showed up in 7.9, deprecated since 7.56.0 🏁
• CURLFORM_FILE — showed up in 7.9, deprecated since 7.56.0 📁
• CURLFORM_FILECONTENT — showed up in 7.9.1, deprecated since 7.56.0 📄
• CURLFORM_FILENAME — showed up in 7.9.6, deprecated since 7.56.0 🏷️
• CURLFORM_NAMELENGTH — showed up in 7.9, deprecated since 7.56.0 📐
• CURLFORM_NOTHING — showed up in 7.9, deprecated since 7.56.0 🫥
• CURLFORM_PTRCONTENTS — showed up in 7.9, deprecated since 7.56.0 👉
• CURLFORM_PTRNAME — showed up in 7.9, deprecated since 7.56.0 👉
• CURLFORM_STREAM — showed up in 7.18.2, deprecated since 7.56.0 🌊

---

back to FTP land ✨

• CURLFTP_CREATE_DIR — showed up in 7.19.4. go read CURLOPT_FTP_CREATE_MISSING_DIRS(3) 📂
• CURLFTP_CREATE_DIR_NONE — showed up in 7.19.4. CURLOPT_FTP_CREATE_MISSING_DIRS(3) 🚫
• CURLFTP_CREATE_DIR_RETRY — showed up in 7.19.4. CURLOPT_FTP_CREATE_MISSING_DIRS(3) 🔄
• CURLFTPAUTH_DEFAULT — showed up in 7.12.2. CURLOPT_FTPSSLAUTH(3) 🎛️
• CURLFTPAUTH_SSL — showed up in 7.12.2. CURLOPT_FTPSSLAUTH(3) 🔒
• CURLFTPAUTH_TLS — showed up in 7.12.2. CURLOPT_FTPSSLAUTH(3) 🔐
• CURLFTPMETHOD_DEFAULT — showed up in 7.15.3. CURLOPT_FTP_FILEMETHOD(3) 🎚️
• CURLFTPMETHOD_MULTICWD — showed up in 7.15.3. CURLOPT_FTP_FILEMETHOD(3) 🧭
• CURLFTPMETHOD_NOCWD — showed up in 7.15.3. CURLOPT_FTP_FILEMETHOD(3) 🚷
• CURLFTPMETHOD_SINGLECWD — showed up in 7.15.3. CURLOPT_FTP_FILEMETHOD(3) 1️⃣
• CURLFTPSSL_ALL — showed up in 7.11.0, deprecated since 7.17.0 💀
• CURLFTPSSL_CCC_ACTIVE — showed up in 7.16.2. CURLOPT_USE_SSL(3) 🟢
• CURLFTPSSL_CCC_NONE — showed up in 7.16.2. CURLOPT_USE_SSL(3) ⚪
• CURLFTPSSL_CCC_PASSIVE — showed up in 7.16.1. CURLOPT_USE_SSL(3) 🔵
• CURLFTPSSL_CONTROL — showed up in 7.11.0, deprecated since 7.17.0 🫠
• CURLFTPSSL_NONE — showed up in 7.11.0, deprecated since 7.17.0 🫠
• CURLFTPSSL_TRY — showed up in 7.11.0, deprecated since 7.17.0 🫠

---

• CURLGSSAPI_DELEGATION_FLAG — showed up in 7.22.0. CURLOPT_GSSAPI_DELEGATION(3) 🎫
• CURLGSSAPI_DELEGATION_NONE — showed up in 7.22.0. CURLOPT_GSSAPI_DELEGATION(3) 🚫
• CURLGSSAPI_DELEGATION_POLICY_FLAG — showed up in 7.22.0. CURLOPT_GSSAPI_DELEGATION(3) 📜

---

header bits, all 7.83.0, all pointing at curl_easy_header(3) 🎀

• CURLH_1XX — showed up in 7.83.0. curl_easy_header(3) 1️⃣
• CURLH_CONNECT — showed up in 7.83.0. curl_easy_header(3) 🤝
• CURLH_HEADER — showed up in 7.83.0. curl_easy_header(3) 📋
• CURLH_PSEUDO — showed up in 7.83.0. curl_easy_header(3) 👻
• CURLH_TRAILER — showed up in 7.83.0. curl_easy_header(3) 🚃
• CURLHE_BAD_ARGUMENT — showed up in 7.83.0. libcurl-errors(3) 💀
• CURLHE_BADINDEX — showed up in 7.83.0. libcurl-errors(3) 🔢
• CURLHE_MISSING — showed up in 7.83.0. libcurl-errors(3) 🫥

okay bestie we're deep in the list now, still alphabetizing like it's our job (it literally is) — no skips, no shortcuts, let's go 💅

• CURLHE_NOHEADERS — dropped in 7.83.0. see libcurl-errors(3) ✨
• CURLHE_NOREQUEST — dropped in 7.83.0. see libcurl-errors(3)
• CURLHE_NOT_BUILT_IN — dropped in 7.83.0. see libcurl-errors(3)
• CURLHE_OK — dropped in 7.83.0. see libcurl-errors(3) — the good one fr 💖
• CURLHE_OUT_OF_MEMORY — dropped in 7.83.0. see libcurl-errors(3)
• CURLHEADER_SEPARATE — dropped in 7.37.0. see CURLOPT_HEADEROPT(3)
• CURLHEADER_UNIFIED — dropped in 7.37.0. see CURLOPT_HEADEROPT(3)
• CURLHSTS_ENABLE — dropped in 7.74.0. see CURLOPT_HSTS_CTRL(3)
• CURLHSTS_READONLYFILE — dropped in 7.74.0. see CURLOPT_HSTS_CTRL(3)

---

okay now the CURLINFO_ era begins and it is long, so hydrate first 🍓

---

• CURLINFO_ACTIVESOCKET — dropped in 7.45.0.
• CURLINFO_APPCONNECT_TIME — dropped in 7.19.0.
• CURLINFO_APPCONNECT_TIME_T — dropped in 7.61.0.
• CURLINFO_CAINFO — dropped in 7.84.0.
• CURLINFO_CAPATH — dropped in 7.84.0.
• CURLINFO_CERTINFO — dropped in 7.19.1.
• CURLINFO_CONDITION_UNMET — dropped in 7.19.4.
• CURLINFO_CONN_ID — dropped in 8.2.0.
• CURLINFO_CONNECT_TIME — dropped in 7.4.1.
• CURLINFO_CONNECT_TIME_T — dropped in 7.61.0.
• CURLINFO_CONTENT_LENGTH_DOWNLOAD — dropped in 7.6.1. deprecated since 7.55.0 ⚠️
• CURLINFO_CONTENT_LENGTH_DOWNLOAD_T — dropped in 7.55.0.
• CURLINFO_CONTENT_LENGTH_UPLOAD — dropped in 7.6.1. deprecated since 7.55.0 ⚠️
• CURLINFO_CONTENT_LENGTH_UPLOAD_T — dropped in 7.55.0.
• CURLINFO_CONTENT_TYPE — dropped in 7.9.4.
• CURLINFO_COOKIELIST — dropped in 7.14.1.
• CURLINFO_DATA_IN — dropped in 7.9.6. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_DATA_OUT — dropped in 7.9.6. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_DOUBLE — dropped in 7.4.1.
• CURLINFO_EARLYDATA_SENT_T — dropped in 8.11.0.
• CURLINFO_EFFECTIVE_METHOD — dropped in 7.72.0.
• CURLINFO_EFFECTIVE_URL — dropped in 7.4.
• CURLINFO_END — dropped in 7.9.6.
• CURLINFO_FILETIME — dropped in 7.5.
• CURLINFO_FILETIME_T — dropped in 7.59.0.
• CURLINFO_FTP_ENTRY_PATH — dropped in 7.15.4.
• CURLINFO_HEADER_IN — dropped in 7.9.6. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_HEADER_OUT — dropped in 7.9.6. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_HEADER_SIZE — dropped in 7.4.1.
• CURLINFO_HTTP_CODE — dropped in 7.4.1. deprecated since 7.10.8 ⚠️
• CURLINFO_HTTP_CONNECTCODE — dropped in 7.10.7.
• CURLINFO_HTTP_VERSION — dropped in 7.50.0.
• CURLINFO_HTTPAUTH_AVAIL — dropped in 7.10.8.
• CURLINFO_HTTPAUTH_USED — dropped in 8.12.0.
• CURLINFO_LASTONE — dropped in 7.4.1.
• CURLINFO_LASTSOCKET — dropped in 7.15.2. deprecated since 7.45.0 ⚠️
• CURLINFO_LOCAL_IP — dropped in 7.21.0.
• CURLINFO_LOCAL_PORT — dropped in 7.21.0.
• CURLINFO_LONG — dropped in 7.4.1.
• CURLINFO_MASK — dropped in 7.4.1.
• CURLINFO_NAMELOOKUP_TIME — dropped in 7.4.1.
• CURLINFO_NAMELOOKUP_TIME_T — dropped in 7.61.0.
• CURLINFO_NONE — dropped in 7.4.1.
• CURLINFO_NUM_CONNECTS — dropped in 7.12.3.
• CURLINFO_OFF_T — dropped in 7.55.0.
• CURLINFO_OS_ERRNO — dropped in 7.12.2.
• CURLINFO_POSTTRANSFER_TIME_T — dropped in 8.10.0.
• CURLINFO_PRETRANSFER_TIME — dropped in 7.4.1.
• CURLINFO_PRETRANSFER_TIME_T — dropped in 7.61.0.
• CURLINFO_PRIMARY_IP — dropped in 7.19.0.
• CURLINFO_PRIMARY_PORT — dropped in 7.21.0.
• CURLINFO_PRIVATE — dropped in 7.10.3.
• CURLINFO_PROTOCOL — dropped in 7.52.0. deprecated since 7.85.0 ⚠️
• CURLINFO_PROXY_ERROR — dropped in 7.73.0.
• CURLINFO_PROXY_SSL_VERIFYRESULT — dropped in 7.52.0.
• CURLINFO_PROXYAUTH_AVAIL — dropped in 7.10.8.
• CURLINFO_PROXYAUTH_USED — dropped in 8.12.0.
• CURLINFO_PTR — dropped in 7.54.1.
• CURLINFO_QUEUE_TIME_T — dropped in 8.6.0.
• CURLINFO_REDIRECT_COUNT — dropped in 7.9.7.
• CURLINFO_REDIRECT_TIME — dropped in 7.9.7.
• CURLINFO_REDIRECT_TIME_T — dropped in 7.61.0.
• CURLINFO_REDIRECT_URL — dropped in 7.18.2.
• CURLINFO_REFERER — dropped in 7.76.0.
• CURLINFO_REQUEST_SIZE — dropped in 7.4.1.
• CURLINFO_RESPONSE_CODE — dropped in 7.10.8.
• CURLINFO_RETRY_AFTER — dropped in 7.66.0.
• CURLINFO_RTSP_CLIENT_CSEQ — dropped in 7.20.0.
• CURLINFO_RTSP_CSEQ_RECV — dropped in 7.20.0.
• CURLINFO_RTSP_SERVER_CSEQ — dropped in 7.20.0.
• CURLINFO_RTSP_SESSION_ID — dropped in 7.20.0.
• CURLINFO_SCHEME — dropped in 7.52.0.
• CURLINFO_SIZE_DOWNLOAD — dropped in 7.4.1. deprecated since 7.55.0 ⚠️
• CURLINFO_SIZE_DOWNLOAD_T — dropped in 7.55.0.
• CURLINFO_SIZE_UPLOAD — dropped in 7.4.1. deprecated since 7.55.0 ⚠️
• CURLINFO_SIZE_UPLOAD_T — dropped in 7.55.0.
• CURLINFO_SLIST — dropped in 7.12.3.
• CURLINFO_SOCKET — dropped in 7.45.0.
• CURLINFO_SPEED_DOWNLOAD — dropped in 7.4.1. deprecated since 7.55.0 ⚠️
• CURLINFO_SPEED_DOWNLOAD_T — dropped in 7.55.0.
• CURLINFO_SPEED_UPLOAD — dropped in 7.4.1. deprecated since 7.55.0 ⚠️
• CURLINFO_SPEED_UPLOAD_T — dropped in 7.55.0.
• CURLINFO_SSL_DATA_IN — dropped in 7.12.1. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_SSL_DATA_OUT — dropped in 7.12.1. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_SSL_ENGINES — dropped in 7.12.3.
• CURLINFO_SSL_VERIFYRESULT — dropped in 7.5.
• CURLINFO_STARTTRANSFER_TIME — dropped in 7.9.2.
• CURLINFO_STARTTRANSFER_TIME_T — dropped in 7.61.0.
• CURLINFO_STRING — dropped in 7.4.1.
• CURLINFO_TEXT — dropped in 7.9.6. see CURLOPT_DEBUGFUNCTION(3)
• CURLINFO_TLS_SESSION — dropped in 7.34.0. deprecated since 7.48.0 ⚠️
• CURLINFO_TLS_SSL_PTR — dropped in 7.48.0.
• CURLINFO_TOTAL_TIME — dropped in 7.4.1.
• CURLINFO_TOTAL_TIME_T — dropped in 7.61.0.
• CURLINFO_TYPEMASK — dropped in 7.4.1.
• CURLINFO_USED_PROXY — dropped in 8.7.0.
• CURLINFO_XFER_ID — dropped in 8.2.0.

---

see how many of those got a deprecated tag? that's the manpage telling you to move on, bestie, we don't stay in toxic relationships 💀

---

• CURLIOCMD_NOP — dropped in 7.12.3. see CURLOPT_IOCTLFUNCTION(3)
• CURLIOCMD_RESTARTREAD — dropped in 7.12.3. see CURLOPT_IOCTLFUNCTION(3)
• CURLIOE_FAILRESTART — dropped in 7.12.3. see CURLOPT_IOCTLFUNCTION(3)
• CURLIOE_OK — dropped in 7.12.3. see CURLOPT_IOCTLFUNCTION(3) ✨
• CURLIOE_UNKNOWNCMD — dropped in 7.12.3. see CURLOPT_IOCTLFUNCTION(3)

---

okay now the known-hosts crew, and honestly they have main character energy 👑

---

• CURLKHMATCH_MISMATCH — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHMATCH_MISSING — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHMATCH_OK — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3) 🫶
• CURLKHSTAT_DEFER — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHSTAT_FINE — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHSTAT_FINE_ADD_TO_FILE — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHSTAT_FINE_REPLACE — dropped in 7.73.0. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHSTAT_REJECT — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_DSS — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_ECDSA — dropped in 7.58.0. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_ED25519 — dropped in 7.58.0. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_RSA — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_RSA1 — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)
• CURLKHTYPE_UNKNOWN — dropped in 7.19.6. see CURLOPT_SSH_KEYFUNCTION(3)

---

and now, the CURLM_ section — the multi handle saga, aka the group chat of libcurl 🌈

---

• CURLM_ABORTED_BY_CALLBACK — dropped in 7.81.0. see libcurl-errors(3)
• CURLM_ADDED_ALREADY — dropped in 7.33.0. see libcurl-errors(3)
• CURLM_BAD_EASY_HANDLE — dropped in 7.9.6. see libcurl-errors(3)
• CURLM_BAD_FUNCTION_ARGUMENT — dropped in 7.69.0. see libcurl-errors(3)
• CURLM_BAD_HANDLE — dropped in 7.9.6. see libcurl-errors(3)
• CURLM_BAD_SOCKET — dropped in 7.15.4. see libcurl-errors(3)
• CURLM_CALL_MULTI_PERFORM — dropped in 7.9.6. see libcurl-errors(3)
• CURLM_CALL_MULTI_SOCKET — dropped in 7.15.5. see libcurl-errors(3)
• CURLM_INTERNAL_ERROR — dropped in 7.9.6. see libcurl-errors(3)
• CURLM_OK — dropped in 7.9.6. see libcurl-errors(3) — the one we're all rooting for 💖
• CURLM_OUT_OF_MEMORY — dropped in 7.9.6. see libcurl-errors(3)
• CURLM_RECURSIVE_API_CALL — dropped in 7.59.0. see libcurl-errors(3)
• CURLM_UNKNOWN_OPTION — dropped in 7.15.4. see libcurl-errors(3)
• CURLM_UNRECOVERABLE_POLL — dropped in 7.84.0. see libcurl-errors(3)
• CURLM_WAKEUP_FAILURE — dropped in 7.68.0. see libcurl-errors(3)

---

• CURLMIMEOPT_FORMESCAPE — dropped in 7.81.0. see CURLOPT_MIME_OPTIONS(3)

---

little CURLMINFO_ cluster, all born in 8.16.0 together like triplets (sextuplets?) 🎀

---

• CURLMINFO_NONE — dropped in 8.16.0.
• CURLMINFO_XFERS_ADDED — dropped in 8.16.0.
• CURLMINFO_XFERS_CURRENT — dropped in 8.16.0.
• CURLMINFO_XFERS_DONE — dropped in 8.16.0.
• CURLMINFO_XFERS_PENDING — dropped in 8.16.0.
• CURLMINFO_XFERS_RUNNING — dropped in 8.16.0.
• CURLMNOTIFY_EASY_DONE — dropped in 8.17.0.
• CURLMNOTIFY_INFO_READ — dropped in 8.17.0.
• CURLMNWC_CLEAR_CONNS — dropped in 8.16.0.
• CURLMNWC_CLEAR_DNS — dropped in 8.16.0.

---

and we close this part on the CURLMOPT_ options, each one pointing at its own lil page 🦋

---

• CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE — dropped in 7.30.0. see CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3)
• CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE — dropped in 7.30.0. see CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3)
• CURLMOPT_MAX_CONCURRENT_STREAMS — dropped in 7.67.0. see CURLMOPT_MAX_CONCURRENT_STREAMS(3)
• CURLMOPT_MAX_HOST_CONNECTIONS — dropped in 7.30.0. see CURLMOPT_MAX_HOST_CONNECTIONS(3)

---

okay we're not done yet, the list keeps going — stay tuned bestie, don't touch that dial 💜

• CURLMOPT_MAX_PIPELINE_LENGTH — introduced in 7.30.0 ✨ go read CURLMOPT_MAX_PIPELINE_LENGTH(3)
• CURLMOPT_MAX_TOTAL_CONNECTIONS — introduced in 7.30.0, see CURLMOPT_MAX_TOTAL_CONNECTIONS(3) 🫶
• CURLMOPT_MAXCONNECTS — introduced in 7.16.3, see CURLMOPT_MAXCONNECTS(3)
• CURLMOPT_NETWORK_CHANGED — introduced in 8.16.0, see CURLMOPT_NETWORK_CHANGED(3) 🦋
• CURLMOPT_NOTIFYDATA — introduced in 8.17.0, see CURLMOPT_NOTIFYDATA(3)
• CURLMOPT_NOTIFYFUNCTION — introduced in 8.17.0, see CURLMOPT_NOTIFYFUNCTION(3) 💖
• CURLMOPT_PIPELINING — introduced in 7.16.0, see CURLMOPT_PIPELINING(3)
• CURLMOPT_PIPELINING_SERVER_BL — introduced in 7.30.0, see CURLMOPT_PIPELINING_SERVER_BL(3)
• CURLMOPT_PIPELINING_SITE_BL — introduced in 7.30.0, see CURLMOPT_PIPELINING_SITE_BL(3) 🌸
• CURLMOPT_PUSHDATA — introduced in 7.44.0, see CURLMOPT_PUSHDATA(3)
• CURLMOPT_PUSHFUNCTION — introduced in 7.44.0, see CURLMOPT_PUSHFUNCTION(3)
• CURLMOPT_SOCKETDATA — introduced in 7.15.4, see CURLMOPT_SOCKETDATA(3) ⭐
• CURLMOPT_SOCKETFUNCTION — introduced in 7.15.4, see CURLMOPT_SOCKETFUNCTION(3)
• CURLMOPT_TIMERDATA — introduced in 7.16.0, see CURLMOPT_TIMERDATA(3)
• CURLMOPT_TIMERFUNCTION — introduced in 7.16.0, see CURLMOPT_TIMERFUNCTION(3) 👑
• CURLMSG_DONE — introduced in 7.9.6, see curl_multi_info_read(3)
• CURLMSG_NONE — introduced in 7.9.6, see curl_multi_info_read(3) 💫
• CURLOPT — introduced in 7.69.0, and that's the whole line, no extra page to send you to 🎀
• CURLOPT_ABSTRACT_UNIX_SOCKET — introduced in 7.53.0, see CURLOPT_ABSTRACT_UNIX_SOCKET(3)
• CURLOPT_ACCEPT_ENCODING — introduced in 7.21.6, see CURLOPT_ACCEPT_ENCODING(3)
• CURLOPT_ACCEPTTIMEOUT_MS — introduced in 7.24.0, see CURLOPT_ACCEPTTIMEOUT_MS(3) 🌈
• CURLOPT_ADDRESS_SCOPE — introduced in 7.19.0, see CURLOPT_ADDRESS_SCOPE(3)
• CURLOPT_ALTSVC — introduced in 7.64.1, see CURLOPT_ALTSVC(3)
• CURLOPT_ALTSVC_CTRL — introduced in 7.64.1, see CURLOPT_ALTSVC_CTRL(3) 🦋
• CURLOPT_APPEND — introduced in 7.17.0, see CURLOPT_APPEND(3)
• CURLOPT_AUTOREFERER — introduced in 7.1, see CURLOPT_AUTOREFERER(3)
• CURLOPT_AWS_SIGV4 — introduced in 7.75.0, see CURLOPT_AWS_SIGV4(3) 🔥
• CURLOPT_BUFFERSIZE — introduced in 7.10, see CURLOPT_BUFFERSIZE(3)
• CURLOPT_CA_CACHE_TIMEOUT — introduced in 7.87.0, see CURLOPT_CA_CACHE_TIMEOUT(3)
• CURLOPT_CAINFO — introduced in 7.4.2, see CURLOPT_CAINFO(3) 💜
• CURLOPT_CAINFO_BLOB — introduced in 7.77.0, see CURLOPT_CAINFO_BLOB(3)
• CURLOPT_CAPATH — introduced in 7.9.8, see CURLOPT_CAPATH(3)
• CURLOPT_CERTINFO — introduced in 7.19.1, see CURLOPT_CERTINFO(3) 🍓
• CURLOPT_CHUNK_BGN_FUNCTION — introduced in 7.21.0, see CURLOPT_CHUNK_BGN_FUNCTION(3)
• CURLOPT_CHUNK_DATA — introduced in 7.21.0, see CURLOPT_CHUNK_DATA(3)
• CURLOPT_CHUNK_END_FUNCTION — introduced in 7.21.0, see CURLOPT_CHUNK_END_FUNCTION(3) 🧚
• CURLOPT_CLOSEFUNCTION — introduced in 7.7, deprecated since 7.11.1, no see-also, she's just a memory now 💀
• CURLOPT_CLOSEPOLICY — introduced in 7.7, deprecated since 7.16.1, also no see-also 🫠
• CURLOPT_CLOSESOCKETDATA — introduced in 7.21.7, see CURLOPT_CLOSESOCKETDATA(3)
• CURLOPT_CLOSESOCKETFUNCTION — introduced in 7.21.7, see CURLOPT_CLOSESOCKETFUNCTION(3)
• CURLOPT_CONNECT_ONLY — introduced in 7.15.2, see CURLOPT_CONNECT_ONLY(3) ✨
• CURLOPT_CONNECT_TO — introduced in 7.49.0, see CURLOPT_CONNECT_TO(3)
• CURLOPT_CONNECTTIMEOUT — introduced in 7.7, see CURLOPT_CONNECTTIMEOUT(3)
• CURLOPT_CONNECTTIMEOUT_MS — introduced in 7.16.2, see CURLOPT_CONNECTTIMEOUT_MS(3) ⏰
• CURLOPT_CONV_FROM_NETWORK_FUNCTION — introduced in 7.15.4, deprecated since 7.82.0, no see-also, she got yeeted 😭
• CURLOPT_CONV_FROM_UTF8_FUNCTION — introduced in 7.15.4, deprecated since 7.82.0, no see-also 💀
• CURLOPT_CONV_TO_NETWORK_FUNCTION — introduced in 7.15.4, deprecated since 7.82.0, no see-also 🫠
• CURLOPT_COOKIE — introduced in 7.1, see CURLOPT_COOKIE(3) 🍪
• CURLOPT_COOKIEFILE — introduced in 7.1, see CURLOPT_COOKIEFILE(3)
• CURLOPT_COOKIEJAR — introduced in 7.9, see CURLOPT_COOKIEJAR(3)
• CURLOPT_COOKIELIST — introduced in 7.14.1, see CURLOPT_COOKIELIST(3) 🌸
• CURLOPT_COOKIESESSION — introduced in 7.9.7, see CURLOPT_COOKIESESSION(3)
• CURLOPT_COPYPOSTFIELDS — introduced in 7.17.1, see CURLOPT_COPYPOSTFIELDS(3)
• CURLOPT_CRLF — introduced in 7.1, see CURLOPT_CRLF(3) 🎀
• CURLOPT_CRLFILE — introduced in 7.19.0, see CURLOPT_CRLFILE(3)
• CURLOPT_CURLU — introduced in 7.63.0, see CURLOPT_CURLU(3)
• CURLOPT_CUSTOMREQUEST — introduced in 7.1, see CURLOPT_CUSTOMREQUEST(3) 💅
• CURLOPT_DEBUGDATA — introduced in 7.9.6, see CURLOPT_DEBUGDATA(3)
• CURLOPT_DEBUGFUNCTION — introduced in 7.9.6, see CURLOPT_DEBUGFUNCTION(3)
• CURLOPT_DEFAULT_PROTOCOL — introduced in 7.45.0, see CURLOPT_DEFAULT_PROTOCOL(3) 🌈
• CURLOPT_DIRLISTONLY — introduced in 7.17.0, see CURLOPT_DIRLISTONLY(3)
• CURLOPT_DISALLOW_USERNAME_IN_URL — introduced in 7.61.0, see CURLOPT_DISALLOW_USERNAME_IN_URL(3)
• CURLOPT_DNS_CACHE_TIMEOUT — introduced in 7.9.3, see CURLOPT_DNS_CACHE_TIMEOUT(3) ⏳
• CURLOPT_DNS_INTERFACE — introduced in 7.33.0, see CURLOPT_DNS_INTERFACE(3)
• CURLOPT_DNS_LOCAL_IP4 — introduced in 7.33.0, see CURLOPT_DNS_LOCAL_IP4(3)
• CURLOPT_DNS_LOCAL_IP6 — introduced in 7.33.0, see CURLOPT_DNS_LOCAL_IP6(3) 🦋
• CURLOPT_DNS_SERVERS — introduced in 7.24.0, see CURLOPT_DNS_SERVERS(3)
• CURLOPT_DNS_SHUFFLE_ADDRESSES — introduced in 7.60.0, see CURLOPT_DNS_SHUFFLE_ADDRESSES(3)
• CURLOPT_DNS_USE_GLOBAL_CACHE — introduced in 7.9.3, deprecated since 7.11.1, no see-also, gone but not forgotten 😔
• CURLOPT_DOH_SSL_VERIFYHOST — introduced in 7.76.0, see CURLOPT_DOH_SSL_VERIFYHOST(3) 🔐
• CURLOPT_DOH_SSL_VERIFYPEER — introduced in 7.76.0, see CURLOPT_DOH_SSL_VERIFYPEER(3)
• CURLOPT_DOH_SSL_VERIFYSTATUS — introduced in 7.76.0, see CURLOPT_DOH_SSL_VERIFYSTATUS(3)
• CURLOPT_DOH_URL — introduced in 7.62.0, see CURLOPT_DOH_URL(3) 🫶
• CURLOPT_ECH — introduced in 8.8.0, see CURLOPT_ECH(3)
• CURLOPT_EGDSOCKET — introduced in 7.7, deprecated since 7.84.0, no see-also 💀
• CURLOPT_ENCODING — introduced in 7.10, deprecated since 7.21.6, no see-also, retro icon tbh ✨
• CURLOPT_ERRORBUFFER — introduced in 7.1, see CURLOPT_ERRORBUFFER(3)
• CURLOPT_EXPECT_100_TIMEOUT_MS — introduced in 7.36.0, see CURLOPT_EXPECT_100_TIMEOUT_MS(3) ⭐
• CURLOPT_FAILONERROR — introduced in 7.1, see CURLOPT_FAILONERROR(3)
• CURLOPT_FILE — introduced in 7.1, deprecated since 7.9.7, no see-also 🫠
• CURLOPT_FILETIME — introduced in 7.5, see CURLOPT_FILETIME(3) 🕰️
• CURLOPT_FNMATCH_DATA — introduced in 7.21.0, see CURLOPT_FNMATCH_DATA(3)
• CURLOPT_FNMATCH_FUNCTION — introduced in 7.21.0, see CURLOPT_FNMATCH_FUNCTION(3)
• CURLOPT_FOLLOWLOCATION — introduced in 7.1, see CURLOPT_FOLLOWLOCATION(3) 🧚
• CURLOPT_FORBID_REUSE — introduced in 7.7, see CURLOPT_FORBID_REUSE(3)
• CURLOPT_FRESH_CONNECT — introduced in 7.7, see CURLOPT_FRESH_CONNECT(3) 🔥
• CURLOPT_FTP_ACCOUNT — introduced in 7.13.0, see CURLOPT_FTP_ACCOUNT(3)
• CURLOPT_FTP_ALTERNATIVE_TO_USER — introduced in 7.15.5, see CURLOPT_FTP_ALTERNATIVE_TO_USER(3)
• CURLOPT_FTP_CREATE_MISSING_DIRS — introduced in 7.10.7, see CURLOPT_FTP_CREATE_MISSING_DIRS(3) 📁
• CURLOPT_FTP_FILEMETHOD — introduced in 7.15.1, see CURLOPT_FTP_FILEMETHOD(3)
• CURLOPT_FTP_RESPONSE_TIMEOUT — introduced in 7.10.8, deprecated since 7.85.0, no see-also 💀
• CURLOPT_FTP_SKIP_PASV_IP — introduced in 7.15.0, see CURLOPT_FTP_SKIP_PASV_IP(3)
• CURLOPT_FTP_SSL — introduced in 7.11.0, deprecated since 7.16.4, no see-also 😭
• CURLOPT_FTP_SSL_CCC — introduced in 7.16.1, see CURLOPT_FTP_SSL_CCC(3) 💜
• CURLOPT_FTP_USE_EPRT — introduced in 7.10.5, see CURLOPT_FTP_USE_EPRT(3)
• CURLOPT_FTP_USE_EPSV — introduced in 7.9.2, see CURLOPT_FTP_USE_EPSV(3)
• CURLOPT_FTP_USE_PRET — introduced in 7.20.0, see CURLOPT_FTP_USE_PRET(3) 🌸
• CURLOPT_FTPAPPEND — introduced in 7.1, deprecated since 7.16.4, no see-also 💀
• CURLOPT_FTPASCII — introduced in 7.1, deprecated since 7.11.1, no see-also 🫠
• CURLOPT_FTPLISTONLY — introduced in 7.1, deprecated since 7.16.4, no see-also
• CURLOPT_FTPPORT — introduced in 7.1, see CURLOPT_FTPPORT(3) 🎀
• CURLOPT_FTPSSLAUTH — introduced in 7.12.2, see CURLOPT_FTPSSLAUTH(3)
• CURLOPT_GSSAPI_DELEGATION — introduced in 7.22.0, see CURLOPT_GSSAPI_DELEGATION(3)
• CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS — introduced in 7.59.0, see CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS(3) 👀
• CURLOPT_HAPROXY_CLIENT_IP — introduced in 8.2.0, see CURLOPT_HAPROXY_CLIENT_IP(3)
• CURLOPT_HAPROXYPROTOCOL — introduced in 7.60.0, see CURLOPT_HAPROXYPROTOCOL(3) 🌈
• CURLOPT_HEADER — introduced in 7.1, see CURLOPT_HEADER(3)
• CURLOPT_HEADERDATA — introduced in 7.10, see CURLOPT_HEADERDATA(3)
• CURLOPT_HEADERFUNCTION — introduced in 7.7.2, see CURLOPT_HEADERFUNCTION(3) 🫶
• CURLOPT_HEADEROPT — introduced in 7.37.0, see CURLOPT_HEADEROPT(3)
• CURLOPT_HSTS — introduced in 7.74.0, see CURLOPT_HSTS(3)
• CURLOPT_HSTS_CTRL — introduced in 7.74.0, see CURLOPT_HSTS_CTRL(3) ⭐
• CURLOPT_HSTSREADDATA — introduced in 7.74.0, see CURLOPT_HSTSREADDATA(3)
• CURLOPT_HSTSREADFUNCTION — introduced in 7.74.0, see CURLOPT_HSTSREADFUNCTION(3)
• CURLOPT_HSTSWRITEDATA — introduced in 7.74.0, see CURLOPT_HSTSWRITEDATA(3) 🦋
• CURLOPT_HSTSWRITEFUNCTION — introduced in 7.74.0, see CURLOPT_HSTSWRITEFUNCTION(3)
• CURLOPT_HTTP09_ALLOWED — introduced in 7.64.0, see CURLOPT_HTTP09_ALLOWED(3)
• CURLOPT_HTTP200ALIASES — introduced in 7.10.3, see CURLOPT_HTTP200ALIASES(3) 💫
• CURLOPT_HTTP_CONTENT_DECODING — introduced in 7.16.2, see CURLOPT_HTTP_CONTENT_DECODING(3)
• CURLOPT_HTTP_TRANSFER_DECODING — introduced in 7.16.2, see CURLOPT_HTTP_TRANSFER_DECODING(3)
• CURLOPT_HTTP_VERSION — introduced in 7.9.1, see CURLOPT_HTTP_VERSION(3) 🌸
• CURLOPT_HTTPAUTH — introduced in 7.10.6, see CURLOPT_HTTPAUTH(3)
• CURLOPT_HTTPGET — introduced in 7.8.1, see CURLOPT_HTTPGET(3)
• CURLOPT_HTTPHEADER — introduced in 7.1, see CURLOPT_HTTPHEADER(3) ✨
• CURLOPT_HTTPPOST — introduced in 7.1, deprecated since 7.56.0, no see-also 💀
• CURLOPT_HTTPPROXYTUNNEL — introduced in 7.3, see CURLOPT_HTTPPROXYTUNNEL(3)
• CURLOPT_HTTPREQUEST — introduced in 7.1, last used in 7.15.5, no see-also, an absolute relic 👑
• CURLOPT_IGNORE_CONTENT_LENGTH — dropped in 7.14.1, peep CURLOPT_IGNORE_CONTENT_LENGTH(3) ✨
• CURLOPT_INFILE — from 7.1, and deprecated since 7.9.7 💀 so she's retired, bestie
• CURLOPT_INFILESIZE — from 7.1, see CURLOPT_INFILESIZE(3) 🫶
• CURLOPT_INFILESIZE_LARGE — from 7.11.0, see CURLOPT_INFILESIZE_LARGE(3) ✨
• CURLOPT_INTERFACE — from 7.3, see CURLOPT_INTERFACE(3) 🦋
• CURLOPT_INTERLEAVEDATA — from 7.20.0, see CURLOPT_INTERLEAVEDATA(3) 🎀
• CURLOPT_INTERLEAVEFUNCTION — from 7.20.0, see CURLOPT_INTERLEAVEFUNCTION(3) 🎀 (her and the data one are twins, same era, iconic)
• CURLOPT_IOCTLDATA — from 7.12.3, deprecated since 7.18.0 💀
• CURLOPT_IOCTLFUNCTION — from 7.12.3, deprecated since 7.18.0 💀 matching set of retired icons, ngl
• CURLOPT_IPRESOLVE — from 7.10.8, see CURLOPT_IPRESOLVE(3) 🌸
• CURLOPT_ISSUERCERT — from 7.19.0, see CURLOPT_ISSUERCERT(3) 💅
• CURLOPT_ISSUERCERT_BLOB — from 7.71.0, see CURLOPT_ISSUERCERT_BLOB(3) 💅 the glow-up version
• CURLOPT_KEEP_SENDING_ON_ERROR — from 7.51.0, see CURLOPT_KEEP_SENDING_ON_ERROR(3) 🔥
• CURLOPT_KEYPASSWD — from 7.17.0, see CURLOPT_KEYPASSWD(3) 🔑
• CURLOPT_KRB4LEVEL — from 7.3, deprecated since 7.17.0 💀
• CURLOPT_KRBLEVEL — from 7.16.4, deprecated since 8.17.0 💀 (the newer spelling and she still got deprecated, crying)
• CURLOPT_LOCALPORT — from 7.15.2, see CURLOPT_LOCALPORT(3) 🦋
• CURLOPT_LOCALPORTRANGE — from 7.15.2, see CURLOPT_LOCALPORTRANGE(3) 🦋 same version, bestie energy
• CURLOPT_LOGIN_OPTIONS — from 7.34.0, see CURLOPT_LOGIN_OPTIONS(3) 🌸
• CURLOPT_LOW_SPEED_LIMIT — from 7.1, see CURLOPT_LOW_SPEED_LIMIT(3) 🐌
• CURLOPT_LOW_SPEED_TIME — from 7.1, see CURLOPT_LOW_SPEED_TIME(3) 🐌 her partner in crime
• CURLOPT_MAIL_AUTH — from 7.25.0, see CURLOPT_MAIL_AUTH(3) 📬
• CURLOPT_MAIL_FROM — from 7.20.0, see CURLOPT_MAIL_FROM(3) 📬
• CURLOPT_MAIL_RCPT — from 7.20.0, see CURLOPT_MAIL_RCPT(3) 📬 the mail trio all showed up together, love that for them
• CURLOPT_MAIL_RCPT_ALLLOWFAILS — from 7.69.0, deprecated since 8.2.0 💀 and yes, the three-L spelling is literally how it's written, keep it exactly like that, no cap
• CURLOPT_MAIL_RCPT_ALLOWFAILS — from 8.2.0, see CURLOPT_MAIL_RCPT_ALLOWFAILS(3) ✨ the fixed-spelling replacement, we love a redemption arc
• CURLOPT_MAX_RECV_SPEED_LARGE — from 7.15.5, see CURLOPT_MAX_RECV_SPEED_LARGE(3) 🚀
• CURLOPT_MAX_SEND_SPEED_LARGE — from 7.15.5, see CURLOPT_MAX_SEND_SPEED_LARGE(3) 🚀
• CURLOPT_MAXAGE_CONN — from 7.65.0, see CURLOPT_MAXAGE_CONN(3) 👑
• CURLOPT_MAXCONNECTS — from 7.7, see CURLOPT_MAXCONNECTS(3) 🎀
• CURLOPT_MAXFILESIZE — from 7.10.8, see CURLOPT_MAXFILESIZE(3) 🌸
• CURLOPT_MAXFILESIZE_LARGE — from 7.11.0, see CURLOPT_MAXFILESIZE_LARGE(3) 🌸
• CURLOPT_MAXLIFETIME_CONN — from 7.80.0, see CURLOPT_MAXLIFETIME_CONN(3) ⭐
• CURLOPT_MAXREDIRS — from 7.5, see CURLOPT_MAXREDIRS(3) 🔁
• CURLOPT_MIME_OPTIONS — from 7.81.0, see CURLOPT_MIME_OPTIONS(3) 🦋
• CURLOPT_MIMEPOST — from 7.56.0, see CURLOPT_MIMEPOST(3) 💅
• CURLOPT_MUTE — from 7.1, deprecated since 7.8 💀 shhh she's gone
• CURLOPT_NETRC — from 7.1, see CURLOPT_NETRC(3) 🎀
• CURLOPT_NETRC_FILE — from 7.11.0, see CURLOPT_NETRC_FILE(3) 🎀
• CURLOPT_NEW_DIRECTORY_PERMS — from 7.16.4, see CURLOPT_NEW_DIRECTORY_PERMS(3) 📁
• CURLOPT_NEW_FILE_PERMS — from 7.16.4, see CURLOPT_NEW_FILE_PERMS(3) 📁 same drop, directory's bestie
• CURLOPT_NOBODY — from 7.1, see CURLOPT_NOBODY(3) 🙈 lol the name
• CURLOPT_NOPROGRESS — from 7.1, see CURLOPT_NOPROGRESS(3) 📊
• CURLOPT_NOPROXY — from 7.19.4, see CURLOPT_NOPROXY(3) 🚫
• CURLOPT_NOSIGNAL — from 7.10, see CURLOPT_NOSIGNAL(3) 🔕
• CURLOPT_NOTHING — from 7.1.1, deprecated since 7.11.1 💀 literally named nothing, doing nothing, gone
• CURLOPT_OPENSOCKETDATA — from 7.17.1, see CURLOPT_OPENSOCKETDATA(3) 🔌
• CURLOPT_OPENSOCKETFUNCTION — from 7.17.1, see CURLOPT_OPENSOCKETFUNCTION(3) 🔌
• CURLOPT_PASSWDDATA — from 7.4.2, deprecated since 7.11.1 💀
• CURLOPT_PASSWDFUNCTION — from 7.4.2, deprecated since 7.11.1 💀
• CURLOPT_PASSWORD — from 7.19.1, see CURLOPT_PASSWORD(3) 🔐
• CURLOPT_PASV_HOST — from 7.12.1, deprecated since 7.16.0 💀
• CURLOPT_PATH_AS_IS — from 7.42.0, see CURLOPT_PATH_AS_IS(3) 🛤️
• CURLOPT_PINNEDPUBLICKEY — from 7.39.0, see CURLOPT_PINNEDPUBLICKEY(3) 📌
• CURLOPT_PIPEWAIT — from 7.43.0, see CURLOPT_PIPEWAIT(3) 🚿
• CURLOPT_PORT — from 7.1, see CURLOPT_PORT(3) 🚪
• CURLOPT_POST — from 7.1, see CURLOPT_POST(3) 📮
• CURLOPT_POST301 — from 7.17.1, deprecated since 7.19.1 💀
• CURLOPT_POSTFIELDS — from 7.1, see CURLOPT_POSTFIELDS(3) 📮
• CURLOPT_POSTFIELDSIZE — from 7.2, see CURLOPT_POSTFIELDSIZE(3) 📮
• CURLOPT_POSTFIELDSIZE_LARGE — from 7.11.1, see CURLOPT_POSTFIELDSIZE_LARGE(3) 📮
• CURLOPT_POSTQUOTE — from 7.1, see CURLOPT_POSTQUOTE(3) 💬
• CURLOPT_POSTREDIR — from 7.19.1, see CURLOPT_POSTREDIR(3) 🔁
• CURLOPT_PRE_PROXY — from 7.52.0, see CURLOPT_PRE_PROXY(3) 🧚
• CURLOPT_PREQUOTE — from 7.9.5, see CURLOPT_PREQUOTE(3) 💬
• CURLOPT_PREREQDATA — from 7.80.0, see CURLOPT_PREREQDATA(3) 🌈
• CURLOPT_PREREQFUNCTION — from 7.80.0, see CURLOPT_PREREQFUNCTION(3) 🌈
• CURLOPT_PRIVATE — from 7.10.3, see CURLOPT_PRIVATE(3) 🤫 private info stays private
• CURLOPT_PROGRESSDATA — from 7.1, see CURLOPT_PROGRESSDATA(3) 📊
• CURLOPT_PROGRESSFUNCTION — from 7.1, deprecated since 7.32.0 💀
• CURLOPT_PROTOCOLS — from 7.19.4, deprecated since 7.85.0 💀
• CURLOPT_PROTOCOLS_STR — from 7.85.0, see CURLOPT_PROTOCOLS_STR(3) ✨ the string-y successor, she ate
• CURLOPT_PROXY — from 7.1, see CURLOPT_PROXY(3) 🕵️
• CURLOPT_PROXY_CAINFO — from 7.52.0, see CURLOPT_PROXY_CAINFO(3) 🔒
• CURLOPT_PROXY_CAINFO_BLOB — from 7.77.0, see CURLOPT_PROXY_CAINFO_BLOB(3) 🔒
• CURLOPT_PROXY_CAPATH — from 7.52.0, see CURLOPT_PROXY_CAPATH(3) 🔒
• CURLOPT_PROXY_CRLFILE — from 7.52.0, see CURLOPT_PROXY_CRLFILE(3) 🔒
• CURLOPT_PROXY_ISSUERCERT — from 7.71.0, see CURLOPT_PROXY_ISSUERCERT(3) 🔒
• CURLOPT_PROXY_ISSUERCERT_BLOB — from 7.71.0, see CURLOPT_PROXY_ISSUERCERT_BLOB(3) 🔒
• CURLOPT_PROXY_KEYPASSWD — from 7.52.0, see CURLOPT_PROXY_KEYPASSWD(3) 🔑
• CURLOPT_PROXY_PINNEDPUBLICKEY — from 7.52.0, see CURLOPT_PROXY_PINNEDPUBLICKEY(3) 📌
• CURLOPT_PROXY_SERVICE_NAME — from 7.43.0, see CURLOPT_PROXY_SERVICE_NAME(3) 🏷️
• CURLOPT_PROXY_SSL_CIPHER_LIST — from 7.52.0, see CURLOPT_PROXY_SSL_CIPHER_LIST(3) 🔐
• CURLOPT_PROXY_SSL_OPTIONS — from 7.52.0, see CURLOPT_PROXY_SSL_OPTIONS(3) 🔐
• CURLOPT_PROXY_SSL_VERIFYHOST — from 7.52.0, see CURLOPT_PROXY_SSL_VERIFYHOST(3) 🔐
• CURLOPT_PROXY_SSL_VERIFYPEER — from 7.52.0, see CURLOPT_PROXY_SSL_VERIFYPEER(3) 🔐
• CURLOPT_PROXY_SSLCERT — from 7.52.0, see CURLOPT_PROXY_SSLCERT(3) 📜
• CURLOPT_PROXY_SSLCERT_BLOB — from 7.71.0, see CURLOPT_PROXY_SSLCERT_BLOB(3) 📜
• CURLOPT_PROXY_SSLCERTTYPE — from 7.52.0, see CURLOPT_PROXY_SSLCERTTYPE(3) 📜
• CURLOPT_PROXY_SSLKEY — from 7.52.0, see CURLOPT_PROXY_SSLKEY(3) 🗝️
• CURLOPT_PROXY_SSLKEY_BLOB — from 7.71.0, see CURLOPT_PROXY_SSLKEY_BLOB(3) 🗝️
• CURLOPT_PROXY_SSLKEYTYPE — from 7.52.0, see CURLOPT_PROXY_SSLKEYTYPE(3) 🗝️
• CURLOPT_PROXY_SSLVERSION — from 7.52.0, see CURLOPT_PROXY_SSLVERSION(3) 🗝️
• CURLOPT_PROXY_TLS13_CIPHERS — from 7.61.0, see CURLOPT_PROXY_TLS13_CIPHERS(3) 🔐
• CURLOPT_PROXY_TLSAUTH_PASSWORD — from 7.52.0, see CURLOPT_PROXY_TLSAUTH_PASSWORD(3) 🔑
• CURLOPT_PROXY_TLSAUTH_TYPE — from 7.52.0, see CURLOPT_PROXY_TLSAUTH_TYPE(3) 🔑
• CURLOPT_PROXY_TLSAUTH_USERNAME — from 7.52.0, see CURLOPT_PROXY_TLSAUTH_USERNAME(3) 🔑
• CURLOPT_PROXY_TRANSFER_MODE — from 7.18.0, see CURLOPT_PROXY_TRANSFER_MODE(3) 📼

okay real talk: count how many of these say 7.52.0. That whole CURLOPT_PROXY_* SSL squad literally all arrived in the same version — a whole friend group moving in together, we love a coordinated drop 💜

• CURLOPT_PROXYAUTH — from 7.10.7, see CURLOPT_PROXYAUTH(3) 🕵️
• CURLOPT_PROXYHEADER — from 7.37.0, see CURLOPT_PROXYHEADER(3) 📋
• CURLOPT_PROXYPASSWORD — from 7.19.1, see CURLOPT_PROXYPASSWORD(3) 🔐
• CURLOPT_PROXYPORT — from 7.1, see CURLOPT_PROXYPORT(3) 🚪
• CURLOPT_PROXYTYPE — from 7.10, see CURLOPT_PROXYTYPE(3) 🕵️
• CURLOPT_PROXYUSERNAME — from 7.19.1, see CURLOPT_PROXYUSERNAME(3) 🪪
• CURLOPT_PROXYUSERPWD — from 7.1, see CURLOPT_PROXYUSERPWD(3) 🪪
• CURLOPT_PUT — from 7.1, deprecated since 7.12.1 💀
• CURLOPT_QUICK_EXIT — from 7.87.0, see CURLOPT_QUICK_EXIT(3) 🏃‍♀️💨
• CURLOPT_QUOTE — from 7.1, see CURLOPT_QUOTE(3) 💬
• CURLOPT_RANDOM_FILE — from 7.7, deprecated since 7.84.0 💀
• CURLOPT_RANGE — from 7.1, see CURLOPT_RANGE(3) 🎯
• CURLOPT_READDATA — from 7.9.7, see CURLOPT_READDATA(3) 📖
• CURLOPT_READFUNCTION — from 7.1, see CURLOPT_READFUNCTION(3) 📖
• CURLOPT_REDIR_PROTOCOLS — from 7.19.4, deprecated since 7.85.0 💀
• CURLOPT_REDIR_PROTOCOLS_STR — from 7.85.0, see CURLOPT_REDIR_PROTOCOLS_STR(3) ✨ the _STR glow-up again, she understood the assignment
• CURLOPT_REFERER — from 7.1, see CURLOPT_REFERER(3) 🔗
• CURLOPT_REQUEST_TARGET — from 7.55.0, see CURLOPT_REQUEST_TARGET(3) 🎯
• CURLOPT_RESOLVE — from 7.21.3, see CURLOPT_RESOLVE(3) 🌐
• CURLOPT_RESOLVER_START_DATA — from 7.59.0, see CURLOPT_RESOLVER_START_DATA(3) 🌐
• CURLOPT_RESOLVER_START_FUNCTION — from 7.59.0, see CURLOPT_RESOLVER_START_FUNCTION(3) 🌐
• CURLOPT_RESUME_FROM — from 7.1, see CURLOPT_RESUME_FROM(3) ⏯️
• CURLOPT_RESUME_FROM_LARGE — from 7.11.0, see CURLOPT_RESUME_FROM_LARGE(3) ⏯️
• CURLOPT_RTSP_CLIENT_CSEQ — from 7.20.0, see CURLOPT_RTSP_CLIENT_CSEQ(3) 📺
• CURLOPT_RTSP_REQUEST — from 7.20.0, see CURLOPT_RTSP_REQUEST(3) 📺
• CURLOPT_RTSP_SERVER_CSEQ — from 7.20.0, see CURLOPT_RTSP_SERVER_CSEQ(3) 📺
• CURLOPT_RTSP_SESSION_ID — from 7.20.0, see CURLOPT_RTSP_SESSION_ID(3) 📺
• CURLOPT_RTSP_STREAM_URI — from 7.20.0, see CURLOPT_RTSP_STREAM_URI(3) 📺
• CURLOPT_RTSP_TRANSPORT — from 7.20.0, see CURLOPT_RTSP_TRANSPORT(3) 📺 six RTSP options, all 7.20.0, all matching — that's a whole clique right there 🌈
• CURLOPT_RTSPHEADER — showed up in 7.20.0 ✨ see CURLOPT_HTTPHEADER for the whole story.
• CURLOPT_SASL_AUTHZID — 7.66.0 energy, see CURLOPT_SASL_AUTHZID(3).
• CURLOPT_SASL_IR — 7.31.0, see CURLOPT_SASL_IR(3).
• CURLOPT_SEEKDATA — 7.18.0 bestie, see CURLOPT_SEEKDATA(3).
• CURLOPT_SEEKFUNCTION — also 7.18.0 (they're twins 💅), see CURLOPT_SEEKFUNCTION(3).
• CURLOPT_SERVER_RESPONSE_TIMEOUT — 7.20.0, see CURLOPT_SERVER_RESPONSE_TIMEOUT(3).
• CURLOPT_SERVER_RESPONSE_TIMEOUT_MS — the millisecond glow-up, 8.6.0, see CURLOPT_SERVER_RESPONSE_TIMEOUT_MS(3).
• CURLOPT_SERVICE_NAME — 7.43.0, see CURLOPT_SERVICE_NAME(3).
• CURLOPT_SHARE — literal 7.10 elder, see CURLOPT_SHARE(3).
• CURLOPT_SOCKOPTDATA — 7.16.0, see CURLOPT_SOCKOPTDATA(3).
• CURLOPT_SOCKOPTFUNCTION — 7.16.0, see CURLOPT_SOCKOPTFUNCTION(3).
• CURLOPT_SOCKS5_AUTH — 7.55.0, see CURLOPT_SOCKS5_AUTH(3).
• CURLOPT_SOCKS5_GSSAPI_NEC — 7.19.4, see CURLOPT_SOCKS5_GSSAPI_NEC(3).
• CURLOPT_SOCKS5_GSSAPI_SERVICE — introduced 7.19.4, but it's deprecated since 7.49.0 😭 don't build new stuff on it.
• CURLOPT_SOURCE_HOST — introduced 7.12.1, last used in 7.15.5. gone-gone.
• CURLOPT_SOURCE_PATH — introduced 7.12.1, last used in 7.15.5.
• CURLOPT_SOURCE_PORT — introduced 7.12.1, last used in 7.15.5.
• CURLOPT_SOURCE_POSTQUOTE — introduced 7.12.1, last used in 7.15.5.
• CURLOPT_SOURCE_PREQUOTE — introduced 7.12.1, last used in 7.15.5.
• CURLOPT_SOURCE_QUOTE — introduced 7.13.0, last used in 7.15.5.
• CURLOPT_SOURCE_URL — introduced 7.13.0, last used in 7.15.5.
• CURLOPT_SOURCE_USERPWD — introduced 7.12.1, last used in 7.15.5.

🫶 that whole CURLOPT_SOURCE_* squad is a museum exhibit at this point — every single one of them peaced out after 7.15.5.

• CURLOPT_SSH_AUTH_TYPES — 7.16.1, see CURLOPT_SSH_AUTH_TYPES(3).
• CURLOPT_SSH_COMPRESSION — 7.56.0, see CURLOPT_SSH_COMPRESSION(3).
• CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 — 7.17.1, see CURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3).
• CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 — 7.80.0, see CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256(3).
• CURLOPT_SSH_HOSTKEYDATA — 7.84.0, see CURLOPT_SSH_HOSTKEYDATA(3).
• CURLOPT_SSH_HOSTKEYFUNCTION — 7.84.0, see CURLOPT_SSH_HOSTKEYFUNCTION(3).
• CURLOPT_SSH_KEYDATA — 7.19.6, see CURLOPT_SSH_KEYDATA(3).
• CURLOPT_SSH_KEYFUNCTION — 7.19.6, see CURLOPT_SSH_KEYFUNCTION(3).
• CURLOPT_SSH_KNOWNHOSTS — 7.19.6, see CURLOPT_SSH_KNOWNHOSTS(3).
• CURLOPT_SSH_PRIVATE_KEYFILE — 7.16.1, see CURLOPT_SSH_PRIVATE_KEYFILE(3).
• CURLOPT_SSH_PUBLIC_KEYFILE — 7.16.1, see CURLOPT_SSH_PUBLIC_KEYFILE(3).

---

okay we're entering the SSL era of the alphabet, this is where it gets iconic 💅

• CURLOPT_SSL_CIPHER_LIST — 7.9, see CURLOPT_SSL_CIPHER_LIST(3).
• CURLOPT_SSL_CTX_DATA — 7.10.6, see CURLOPT_SSL_CTX_DATA(3).
• CURLOPT_SSL_CTX_FUNCTION — 7.10.6, see CURLOPT_SSL_CTX_FUNCTION(3).
• CURLOPT_SSL_EC_CURVES — 7.73.0, see CURLOPT_SSL_EC_CURVES(3).
• CURLOPT_SSL_ENABLE_ALPN — 7.36.0, see CURLOPT_SSL_ENABLE_ALPN(3).
• CURLOPT_SSL_ENABLE_NPN — introduced 7.36.0, deprecated since 7.86.0. rest in peace NPN 🕯️
• CURLOPT_SSL_FALSESTART — introduced 7.42.0, deprecated since 8.15.0. bestie is on the way out, noted.
• CURLOPT_SSL_OPTIONS — 7.25.0, see CURLOPT_SSL_OPTIONS(3).
• CURLOPT_SSL_SESSIONID_CACHE — 7.16.0, see CURLOPT_SSL_SESSIONID_CACHE(3).
• CURLOPT_SSL_SIGNATURE_ALGORITHMS — 8.14.0, see CURLOPT_SSL_SIGNATURE_ALGORITHMS(3).
• CURLOPT_SSL_VERIFYHOST — 7.8.1, see CURLOPT_SSL_VERIFYHOST(3).
• CURLOPT_SSL_VERIFYPEER — 7.4.2, see CURLOPT_SSL_VERIFYPEER(3).
• CURLOPT_SSL_VERIFYSTATUS — 7.41.0, see CURLOPT_SSL_VERIFYSTATUS(3).
• CURLOPT_SSLCERT — 7.1, the og, see CURLOPT_SSLCERT(3).
• CURLOPT_SSLCERT_BLOB — 7.71.0, see CURLOPT_SSLCERT_BLOB(3).
• CURLOPT_SSLCERTPASSWD — introduced 7.1.1, deprecated since 7.17.0 🫠
• CURLOPT_SSLCERTTYPE — 7.9.3, see CURLOPT_SSLCERTTYPE(3).
• CURLOPT_SSLENGINE — 7.9.3, see CURLOPT_SSLENGINE(3).
• CURLOPT_SSLENGINE_DEFAULT — 7.9.3, see CURLOPT_SSLENGINE_DEFAULT(3).
• CURLOPT_SSLKEY — 7.9.3, see CURLOPT_SSLKEY(3).
• CURLOPT_SSLKEY_BLOB — 7.71.0, see CURLOPT_SSLKEY_BLOB(3).
• CURLOPT_SSLKEYPASSWD — introduced 7.9.3, deprecated since 7.17.0 😭 both the *PASSWD ones got retired in the same version, cute of them.
• CURLOPT_SSLKEYTYPE — 7.9.3, see CURLOPT_SSLKEYTYPE(3).
• CURLOPT_SSLVERSION — 7.1, see CURLOPT_SSLVERSION(3).
• CURLOPT_STDERR — 7.1, see CURLOPT_STDERR(3).
• CURLOPT_STREAM_DEPENDS — introduced 7.46.0, deprecated since 8.21.0.
• CURLOPT_STREAM_DEPENDS_E — introduced 7.46.0, deprecated since 8.21.0. yeah both of them, together, as they should be 💀
• CURLOPT_STREAM_WEIGHT — 7.46.0, see CURLOPT_STREAM_WEIGHT(3).
• CURLOPT_SUPPRESS_CONNECT_HEADERS — 7.54.0, see CURLOPT_SUPPRESS_CONNECT_HEADERS(3).

---

• CURLOPT_TCP_FASTOPEN — 7.49.0, see CURLOPT_TCP_FASTOPEN(3).
• CURLOPT_TCP_KEEPALIVE — 7.25.0, see CURLOPT_TCP_KEEPALIVE(3).
• CURLOPT_TCP_KEEPCNT — 8.9.0, see CURLOPT_TCP_KEEPCNT(3).
• CURLOPT_TCP_KEEPIDLE — 7.25.0, see CURLOPT_TCP_KEEPIDLE(3).
• CURLOPT_TCP_KEEPINTVL — 7.25.0, see CURLOPT_TCP_KEEPINTVL(3).
• CURLOPT_TCP_NODELAY — 7.11.2, see CURLOPT_TCP_NODELAY(3).
• CURLOPT_TELNETOPTIONS — 7.7, see CURLOPT_TELNETOPTIONS(3).
• CURLOPT_TFTP_BLKSIZE — 7.19.4, see CURLOPT_TFTP_BLKSIZE(3).
• CURLOPT_TFTP_NO_OPTIONS — 7.48.0, see CURLOPT_TFTP_NO_OPTIONS(3).
• CURLOPT_TIMECONDITION — 7.1, see CURLOPT_TIMECONDITION(3).
• CURLOPT_TIMEOUT — 7.1, see CURLOPT_TIMEOUT(3).
• CURLOPT_TIMEOUT_MS — 7.16.2, see CURLOPT_TIMEOUT_MS(3).
• CURLOPT_TIMEVALUE — 7.1, see CURLOPT_TIMEVALUE(3).
• CURLOPT_TIMEVALUE_LARGE — 7.59.0, see CURLOPT_TIMEVALUE_LARGE(3).
• CURLOPT_TLS13_CIPHERS — 7.61.0, see CURLOPT_TLS13_CIPHERS(3).
• CURLOPT_TLSAUTH_PASSWORD — 7.21.4, see CURLOPT_TLSAUTH_PASSWORD(3).
• CURLOPT_TLSAUTH_TYPE — 7.21.4, see CURLOPT_TLSAUTH_TYPE(3).
• CURLOPT_TLSAUTH_USERNAME — 7.21.4, see CURLOPT_TLSAUTH_USERNAME(3).
• CURLOPT_TRAILERDATA — 7.64.0, see CURLOPT_TRAILERDATA(3).
• CURLOPT_TRAILERFUNCTION — 7.64.0, see CURLOPT_TRAILERFUNCTION(3).
• CURLOPT_TRANSFER_ENCODING — 7.21.6, see CURLOPT_TRANSFER_ENCODING(3).
• CURLOPT_TRANSFERTEXT — 7.1.1, see CURLOPT_TRANSFERTEXT(3).

---

• CURLOPT_UNIX_SOCKET_PATH — 7.40.0, see CURLOPT_UNIX_SOCKET_PATH(3).
• CURLOPT_UNRESTRICTED_AUTH — 7.10.4, see CURLOPT_UNRESTRICTED_AUTH(3).
• CURLOPT_UPKEEP_INTERVAL_MS — 7.62.0, see CURLOPT_UPKEEP_INTERVAL_MS(3).
• CURLOPT_UPLOAD — 7.1, see CURLOPT_UPLOAD(3).
• CURLOPT_UPLOAD_BUFFERSIZE — 7.62.0, see CURLOPT_UPLOAD_BUFFERSIZE(3).
• CURLOPT_UPLOAD_FLAGS — 8.13.0, see CURLOPT_UPLOAD_FLAGS(3).
• CURLOPT_URL — 7.1, see CURLOPT_URL(3). the main character of the whole list tbh 👑
• CURLOPT_USE_SSL — 7.17.0, see CURLOPT_USE_SSL(3).
• CURLOPT_USERAGENT — 7.1, see CURLOPT_USERAGENT(3).
• CURLOPT_USERNAME — 7.19.1, see CURLOPT_USERNAME(3).
• CURLOPT_USERPWD — 7.1, see CURLOPT_USERPWD(3).
• CURLOPT_VERBOSE — 7.1, see CURLOPT_VERBOSE(3).
• CURLOPT_WILDCARDMATCH — 7.21.0, see CURLOPT_WILDCARDMATCH(3).
• CURLOPT_WRITEDATA — 7.9.7, see CURLOPT_WRITEDATA(3).
• CURLOPT_WRITEFUNCTION — 7.1, see CURLOPT_WRITEFUNCTION(3).
• CURLOPT_WRITEHEADER — 7.1, and it points you at CURLOPT_HEADERDATA instead ✨
• CURLOPT_WRITEINFO — 7.1. that's it, that's the whole note 🌸
• CURLOPT_WS_OPTIONS — 7.86.0, see CURLOPT_WS_OPTIONS(3).
• CURLOPT_XFERINFODATA — 7.32.0, see CURLOPT_XFERINFODATA(3).
• CURLOPT_XFERINFOFUNCTION — 7.32.0, see CURLOPT_XFERINFOFUNCTION(3).
• CURLOPT_XOAUTH2_BEARER — 7.33.0, see CURLOPT_XOAUTH2_BEARER(3).

---

and now the type/constant girlies 🎀

• CURLOPTDEPRECATED — 7.87.0.
• CURLOPTTYPE_BLOB — 7.71.0.
• CURLOPTTYPE_CBPOINT — 7.73.0.
• CURLOPTTYPE_FUNCTIONPOINT — 7.1.
• CURLOPTTYPE_LONG — 7.1.
• CURLOPTTYPE_OBJECTPOINT — 7.1.
• CURLOPTTYPE_OFF_T — 7.11.0.
• CURLOPTTYPE_SLISTPOINT — 7.65.2.
• CURLOPTTYPE_STRINGPOINT — 7.46.0.
• CURLOPTTYPE_VALUES — 7.73.0.
• CURLOT_BLOB — 7.73.0, see curl_easy_option_next(3).
• CURLOT_CBPTR — 7.73.0, see curl_easy_option_next(3).
• CURLOT_FLAG_ALIAS — 7.73.0, see curl_easy_option_next(3).
• CURLOT_FUNCTION — 7.73.0, see curl_easy_option_next(3).
• CURLOT_LONG — 7.73.0, see curl_easy_option_next(3).
• CURLOT_OBJECT — 7.73.0, see curl_easy_option_next(3).
• CURLOT_OFF_T — 7.73.0, see curl_easy_option_next(3).
• CURLOT_SLIST — 7.73.0, see curl_easy_option_next(3).
• CURLOT_STRING — 7.73.0, see curl_easy_option_next(3).
• CURLOT_VALUES — 7.73.0, see curl_easy_option_next(3).

the entire CURLOT_* family dropped in 7.73.0 at the same time, like a coordinated group entrance 💅 every single one of them sends you to curl_easy_option_next(3).

---

• CURLPAUSE_ALL — 7.18.0, see curl_easy_pause(3).
• CURLPAUSE_CONT — 7.18.0, see curl_easy_pause(3).
• CURLPAUSE_RECV — 7.18.0, see curl_easy_pause(3).
• CURLPAUSE_RECV_CONT — 7.18.0, see curl_easy_pause(3).
• CURLPAUSE_SEND — 7.18.0, see curl_easy_pause(3).
• CURLPAUSE_SEND_CONT — 7.18.0, see curl_easy_pause(3).

the whole CURLPAUSE_* crew is 7.18.0 and they all point at curl_easy_pause(3) 🦋 six for the price of one, we love a consistent household.

• CURLPIPE_HTTP1 — dropped in 7.43.0 ✨ full story over in CURLMOPT_PIPELINING(3).
• CURLPIPE_MULTIPLEX — also 7.43.0, also CURLMOPT_PIPELINING(3). yes bestie they're siblings 💅
• CURLPIPE_NOTHING — 7.43.0 girlie, CURLMOPT_PIPELINING(3) has the tea 🍓

---

okay so now we're entering the CURLPROTO_* era and it's giving "every protocol curl has ever heard of" 😭 literally all of them point at CURLINFO_PROTOCOL(3), so I'm gonna keep that part short and cute.

• CURLPROTO_ALL — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_DICT — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_FILE — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_FTP — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_FTPS — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_GOPHER — 7.21.2 🦋 see CURLINFO_PROTOCOL(3)
• CURLPROTO_GOPHERS — 7.75.0 🦋 see CURLINFO_PROTOCOL(3)
• CURLPROTO_HTTP — 7.19.4 🌈 see CURLINFO_PROTOCOL(3)
• CURLPROTO_HTTPS — 7.19.4 🌈 see CURLINFO_PROTOCOL(3)
• CURLPROTO_IMAP — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_IMAPS — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_LDAP — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_LDAPS — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_MQTT — 7.71.0 ⭐ see CURLINFO_PROTOCOL(3)
• CURLPROTO_POP3 — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_POP3S — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMP — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMPE — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMPS — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMPT — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMPTE — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTMPTS — 7.21.0 🔥 see CURLINFO_PROTOCOL(3)
• CURLPROTO_RTSP — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SCP — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SFTP — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SMB — 7.40.0 🫶 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SMBS — 7.40.0 🫶 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SMTP — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_SMTPS — 7.20.0 💌 see CURLINFO_PROTOCOL(3)
• CURLPROTO_TELNET — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)
• CURLPROTO_TFTP — 7.19.4 🎀 see CURLINFO_PROTOCOL(3)

---

next up, proxy types 💅 these all live in CURLOPT_PROXYTYPE(3), iykyk.

• CURLPROXY_HTTP — 7.10 🧚 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_HTTP_1_0 — 7.19.4 🧚 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_HTTPS — 7.52.0 🔒 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_HTTPS2 — 8.1.0 🔒 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_SOCKS4 — 7.10 🧦 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_SOCKS4A — 7.18.0 🧦 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_SOCKS5 — 7.10 🧦 see CURLOPT_PROXYTYPE(3)
• CURLPROXY_SOCKS5_HOSTNAME — 7.18.0 🧦 see CURLOPT_PROXYTYPE(3)

---

and here come the proxy error codes 😭 the whole CURLPX_ fam showed up together in 7.73.0 and they all point to CURLINFO_PROXY_ERROR(3). periodt.

• CURLPX_BAD_ADDRESS_TYPE — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_BAD_VERSION — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_CLOSED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_GSSAPI — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_GSSAPI_PERMSG — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_GSSAPI_PROTECTION — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_IDENTD — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_IDENTD_DIFFER — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_LONG_HOSTNAME — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_LONG_PASSWD — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_LONG_USER — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_NO_AUTH — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_OK — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_RECV_ADDRESS — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_RECV_AUTH — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_RECV_CONNECT — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_RECV_REQACK — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_COMMAND_NOT_SUPPORTED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_CONNECTION_REFUSED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_GENERAL_SERVER_FAILURE — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_HOST_UNREACHABLE — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_NETWORK_UNREACHABLE — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_NOT_ALLOWED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_TTL_EXPIRED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REPLY_UNASSIGNED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_REQUEST_FAILED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_RESOLVE_HOST — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_SEND_AUTH — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_SEND_CONNECT — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_SEND_REQUEST — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_UNKNOWN_FAIL — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_UNKNOWN_MODE — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)
• CURLPX_USER_REJECTED — 7.73.0 😭 see CURLINFO_PROXY_ERROR(3)

---

share time! the CURLSHE_* squad is all about the share errors, and honestly? they're all in libcurl-errors(3) 🫶

• CURLSHE_BAD_OPTION — 7.10.3 💜 see libcurl-errors(3)
• CURLSHE_IN_USE — 7.10.3 💜 see libcurl-errors(3)
• CURLSHE_INVALID — 7.10.3 💜 see libcurl-errors(3)
• CURLSHE_NOMEM — 7.12.0 💜 see libcurl-errors(3)
• CURLSHE_NOT_BUILT_IN — 7.23.0 💜 see libcurl-errors(3)
• CURLSHE_OK — 7.10.3 💜 see libcurl-errors(3)

ok minor moment but be careful here bestie: CURLSHE_* (with an E) are the error codes and CURLSHOPT_* (with an OPT) are the options. literally one letter apart, do not mix them up 😭 that's the vibe check.

• CURLSHOPT_LOCKFUNC — 7.10.3 🔐 see CURLSHOPT_LOCKFUNC(3)
• CURLSHOPT_NONE — 7.10.3 🎀 see curl_share_setopt(3)
• CURLSHOPT_SHARE — 7.10.3 🤝 see CURLSHOPT_SHARE(3)
• CURLSHOPT_UNLOCKFUNC — 7.10.3 🔓 see CURLSHOPT_UNLOCKFUNC(3)
• CURLSHOPT_UNSHARE — 7.10.3 🙈 see CURLSHOPT_UNSHARE(3)
• CURLSHOPT_USERDATA — 7.10.3 🎀 see CURLSHOPT_USERDATA(3)

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sock types, super short, both hang out with CURLOPT_SOCKOPTFUNCTION(3) 🧦

• CURLSOCKTYPE_ACCEPT — 7.28.0 ✨ see CURLOPT_SOCKOPTFUNCTION(3)
• CURLSOCKTYPE_IPCXN — 7.16.0 ✨ see CURLOPT_SOCKOPTFUNCTION(3)

---

SSH auth types bestie!! all of them are documented under CURLOPT_SSH_AUTH_TYPES(3) 💜

• CURLSSH_AUTH_AGENT — 7.28.0 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_ANY — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_DEFAULT — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_GSSAPI — 7.58.0 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_HOST — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_KEYBOARD — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_NONE — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_PASSWORD — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)
• CURLSSH_AUTH_PUBLICKEY — 7.16.1 🗝️ see CURLOPT_SSH_AUTH_TYPES(3)

---

okay the SSL backends 😭 this is the messy part. some of these girlies are still thriving, some are literally deprecated, and one of them was last used in a version older than most of y'all. read carefully, no cap 💀

• CURLSSLBACKEND_AWSLC — 8.1.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_AXTLS — 7.38.0. Deprecated since 7.61.0 💀
• CURLSSLBACKEND_BEARSSL — 7.68.0. Deprecated since 8.15.0 💀
• CURLSSLBACKEND_BORINGSSL — 7.49.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_CYASSL — 7.34.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_DARWINSSL — 7.34.0. Deprecated since 7.64.1 💀
• CURLSSLBACKEND_GNUTLS — 7.34.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_GSKIT — 7.34.0. Deprecated since 8.3.0 💀
• CURLSSLBACKEND_LIBRESSL — 7.49.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_MBEDTLS — 7.46.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_MESALINK — 7.62.0. Deprecated since 7.82.0 💀
• CURLSSLBACKEND_NONE — 7.34.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_NSS — 7.34.0. Deprecated since 8.3.0 💀
• CURLSSLBACKEND_OPENSSL — 7.34.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_POLARSSL — 7.34.0. Deprecated since 7.69.0 💀
• CURLSSLBACKEND_QSOSSL — 7.34.0. Last used in 7.38.0 💀 (rip girlie, she's gone)
• CURLSSLBACKEND_RUSTLS — 7.76.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_SCHANNEL — 7.34.0 🌸 see curl_global_sslset(3)
• CURLSSLBACKEND_SECURETRANSPORT — 7.64.1. Deprecated since 8.15.0 💀
• CURLSSLBACKEND_WOLFSSL — 7.49.0 🌸 see curl_global_sslset(3)

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and the CURLSSLOPT_* crew, all documented in CURLOPT_SSL_OPTIONS(3) 🔥

• CURLSSLOPT_ALLOW_BEAST — 7.25.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_AUTO_CLIENT_CERT — 7.77.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_EARLYDATA — 8.11.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_NATIVE_CA — 7.71.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_NO_PARTIALCHAIN — 7.68.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_NO_REVOKE — 7.44.0 🔥 see CURLOPT_SSL_OPTIONS(3)
• CURLSSLOPT_REVOKE_BEST_EFFORT — 7.70.0 🔥 see CURLOPT_SSL_OPTIONS(3)

---

last lil batch of this part, the CURLSSLSET_* status codes (all 7.56.0, all about curl_global_sslset(3)) plus the start of the HSTS ones 💅

• CURLSSLSET_NO_BACKENDS — 7.56.0 🌈 see curl_global_sslset(3)
• CURLSSLSET_OK — 7.56.0 🌈 see curl_global_sslset(3)
• CURLSSLSET_TOO_LATE — 7.56.0 🌈 see curl_global_sslset(3)
• CURLSSLSET_UNKNOWN_BACKEND — 7.56.0 🌈 see curl_global_sslset(3)
• CURLSTS_DONE — 7.74.0 🦋 see CURLOPT_HSTSREADFUNCTION(3)
• CURLSTS_FAIL — 7.74.0 🦋 see CURLOPT_HSTSREADFUNCTION(3)
• CURLSTS_OK — introduced in 7.62.0's neighbor, no wait, 7.74.0 bestie, keep up 😭. See CURLOPT_HSTSREADFUNCTION(3).
• CURLU_ALLOW_SPACE — introduced in 7.78.0. See curl_url_get(3).
• CURLU_APPENDQUERY — introduced in 7.62.0. See curl_url_get(3).
• CURLU_DEFAULT_PORT — introduced in 7.62.0. See curl_url_get(3).
• CURLU_DEFAULT_SCHEME — introduced in 7.62.0. See curl_url_get(3).
• CURLU_DISALLOW_USER — introduced in 7.62.0. See curl_url_get(3).
• CURLU_GET_EMPTY — introduced in 8.8.0. See curl_url_get(3).
• CURLU_GUESS_SCHEME — introduced in 7.62.0. See curl_url_get(3).
• CURLU_NO_AUTHORITY — introduced in 7.67.0. See curl_url_get(3).
• CURLU_NO_DEFAULT_PORT — introduced in 7.62.0. See curl_url_get(3).
• CURLU_NO_GUESS_SCHEME — introduced in 8.9.0. See curl_url_get(3).
• CURLU_NON_SUPPORT_SCHEME — introduced in 7.62.0. See curl_url_get(3).
• CURLU_PATH_AS_IS — introduced in 7.62.0. See curl_url_get(3).
• CURLU_PUNY2IDN — introduced in 8.3.0. See curl_url_get(3).
• CURLU_PUNYCODE — introduced in 7.88.0. See curl_url_get(3).
• CURLU_URLDECODE — introduced in 7.62.0. See curl_url_get(3).
• CURLU_URLENCODE — introduced in 7.62.0. See curl_url_get(3).
• CURLUE_BAD_FILE_URL — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_FRAGMENT — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_HANDLE — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_BAD_HOSTNAME — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_IPV6 — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_LOGIN — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_PARTPOINTER — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_BAD_PASSWORD — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_PATH — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_PORT_NUMBER — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_BAD_QUERY — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_SCHEME — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_SLASHES — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_BAD_USER — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_LACKS_IDN — introduced in 7.88.0. See libcurl-errors(3).
• CURLUE_MALFORMED_INPUT — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_FRAGMENT — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_HOST — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_OPTIONS — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_PASSWORD — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_PORT — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_QUERY — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_SCHEME — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_USER — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_NO_ZONEID — introduced in 7.81.0. See libcurl-errors(3).
• CURLUE_OK — the good one, the slay one, introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_OUT_OF_MEMORY — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_TOO_LARGE — introduced in 8.6.0. See libcurl-errors(3).
• CURLUE_UNKNOWN_PART — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_UNSUPPORTED_SCHEME — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_URLDECODE — introduced in 7.62.0. See libcurl-errors(3).
• CURLUE_USER_NOT_ALLOWED — introduced in 7.62.0. See libcurl-errors(3).
• CURLULFLAG_ANSWERED — introduced in 8.13.0. (no extra reading required, she stands alone ✨)
• CURLULFLAG_DELETED — introduced in 8.13.0.
• CURLULFLAG_DRAFT — introduced in 8.13.0.
• CURLULFLAG_FLAGGED — introduced in 8.13.0.
• CURLULFLAG_SEEN — introduced in 8.13.0.
• CURLUPART_FRAGMENT — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_HOST — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_OPTIONS — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_PASSWORD — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_PATH — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_PORT — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_QUERY — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_SCHEME — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_URL — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_USER — introduced in 7.62.0. See curl_url_get(3).
• CURLUPART_ZONEID — introduced in 7.65.0. See curl_url_get(3).
• CURLUSESSL_ALL — introduced in 7.17.0. See CURLOPT_USE_SSL(3).
• CURLUSESSL_CONTROL — introduced in 7.17.0. See CURLOPT_USE_SSL(3).
• CURLUSESSL_NONE — introduced in 7.17.0. See CURLOPT_USE_SSL(3).
• CURLUSESSL_TRY — introduced in 7.17.0. See CURLOPT_USE_SSL(3).
• CURLVERSION_EIGHTH — introduced in 7.72.0. See curl_version_info(3).
• CURLVERSION_ELEVENTH — introduced in 7.87.0. See curl_version_info(3).
• CURLVERSION_FIFTH — introduced in 7.57.0. See curl_version_info(3).
• CURLVERSION_FIRST — introduced in 7.10. See curl_version_info(3).
• CURLVERSION_FOURTH — introduced in 7.16.1. See curl_version_info(3).
• CURLVERSION_NINTH — introduced in 7.75.0. See curl_version_info(3).
• CURLVERSION_NOW — introduced in 7.10. See curl_version_info(3).
• CURLVERSION_SECOND — introduced in 7.11.1. See curl_version_info(3).
• CURLVERSION_SEVENTH — introduced in 7.70.0. See curl_version_info(3).
• CURLVERSION_SIXTH — introduced in 7.66.0. See curl_version_info(3).
• CURLVERSION_TENTH — introduced in 7.77.0. See curl_version_info(3).
• CURLVERSION_THIRD — introduced in 7.12.0. See curl_version_info(3).
• CURLVERSION_TWELFTH — introduced in 8.8.0. See curl_version_info(3).
• CURLWARNING — introduced in 7.66.0. (yup, that's it, no further reading 💅)
• CURLWS_BINARY — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_CLOSE — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_CONT — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_NOAUTOPONG — introduced in 8.14.0. See curl_ws_send(3).
• CURLWS_OFFSET — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_PING — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_PONG — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_RAW_MODE — introduced in 7.86.0. See curl_ws_send(3).
• CURLWS_TEXT — introduced in 7.86.0. See curl_ws_send(3).

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✨ SEE ALSO ✨

• libcurl(3)
• libcurl-easy(3)
• libcurl-multi(3)
• libcurl-security(3)
• libcurl-thread(3)

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and that's the whole list bestie, we literally made it to the end 🫶 this beauty's from the libcurl gang, stamped 2026-10-12, and it answers to the name libcurl-symbols(3). go forth and read the other pages, ily, bye 💖🎀