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+++ b/mupdf-source/thirdparty/curl/docs/HISTORY.md	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,346 @@
+How curl Became Like This
+=========================
+
+Towards the end of 1996, Daniel Stenberg was spending time writing an IRC bot
+for an Amiga related channel on EFnet. He then came up with the idea to make
+currency-exchange calculations available to Internet Relay Chat (IRC)
+users. All the necessary data were published on the Web; he just needed to
+automate their retrieval.
+
+Daniel simply adopted an existing command-line open-source tool, httpget, that
+Brazilian Rafael Sagula had written and recently released version 0.1 of. After
+a few minor adjustments, it did just what he needed.
+
+1997
+----
+
+HttpGet 1.0 was released on April 8th 1997 with brand new HTTP proxy support.
+
+We soon found and fixed support for getting currencies over GOPHER.  Once FTP
+download support was added, the name of the project was changed and urlget 2.0
+was released in August 1997. The http-only days were already passed.
+
+1998
+----
+
+The project slowly grew bigger. When upload capabilities were added and the
+name once again was misleading, a second name change was made and on March 20,
+1998 curl 4 was released. (The version numbering from the previous names was
+kept.)
+
+(Unrelated to this project a company called Curl Corporation registered a US
+trademark on the name "CURL" on May 18 1998. That company had then already
+registered the curl.com domain back in November of the previous year. All this
+was revealed to us much later.)
+
+SSL support was added, powered by the SSLeay library.
+
+August: first announcement of curl on freshmeat.net.
+
+October: with the curl 4.9 release and the introduction of cookie support,
+curl was no longer released under the GPL license. Now we're at 4000 lines of
+code, we switched over to the MPL license to restrict the effects of
+"copyleft".
+
+November: configure script and reported successful compiles on several
+major operating systems. The never-quite-understood -F option was added and
+curl could now simulate quite a lot of a browser. TELNET support was added.
+
+Curl 5 was released in December 1998 and introduced the first ever curl man
+page. People started making Linux RPM packages out of it.
+
+1999
+----
+
+January: DICT support added.
+
+OpenSSL took over and SSLeay was abandoned.
+
+May: first Debian package.
+
+August: LDAP:// and FILE:// support added. The curl web site gets 1300 visits
+weekly. Moved site to curl.haxx.nu.
+
+September: Released curl 6.0. 15000 lines of code.
+
+December 28: added the project on Sourceforge and started using its services
+for managing the project.
+
+2000
+----
+
+Spring: major internal overhaul to provide a suitable library interface.
+The first non-beta release was named 7.1 and arrived in August. This offered
+the easy interface and turned out to be the beginning of actually getting
+other software and programs to be based on and powered by libcurl. Almost
+20000 lines of code.
+
+June: the curl site moves to "curl.haxx.se"
+
+August, the curl web site gets 4000 visits weekly.
+
+The PHP guys adopted libcurl already the same month, when the first ever third
+party libcurl binding showed up. CURL has been a supported module in PHP since
+the release of PHP 4.0.2. This would soon get followers. More than 16
+different bindings exist at the time of this writing.
+
+September: kerberos4 support was added.
+
+November: started the work on a test suite for curl. It was later re-written
+from scratch again. The libcurl major SONAME number was set to 1.
+
+2001
+----
+
+January: Daniel released curl 7.5.2 under a new license again: MIT (or
+MPL). The MIT license is extremely liberal and can be combined with GPL
+in other projects. This would finally put an end to the "complaints" from
+people involved in GPLed projects that previously were prohibited from using
+libcurl while it was released under MPL only. (Due to the fact that MPL is
+deemed "GPL incompatible".)
+
+March 22: curl supports HTTP 1.1 starting with the release of 7.7. This
+also introduced libcurl's ability to do persistent connections. 24000 lines of
+code. The libcurl major SONAME number was bumped to 2 due to this overhaul.
+The first experimental ftps:// support was added.
+
+August: curl is bundled in Mac OS X, 10.1. It was already becoming more and
+more of a standard utility of Linux distributions and a regular in the BSD
+ports collections. The curl web site gets 8000 visits weekly. Curl Corporation
+contacted Daniel to discuss "the name issue". After Daniel's reply, they have
+never since got back in touch again.
+
+September: libcurl 7.9 introduces cookie jar and curl_formadd(). During the
+forthcoming 7.9.x releases, we introduced the multi interface slowly and
+without many whistles.
+
+2002
+----
+
+June: the curl web site gets 13000 visits weekly. curl and libcurl is
+35000 lines of code. Reported successful compiles on more than 40 combinations
+of CPUs and operating systems.
+
+To estimate number of users of the curl tool or libcurl library is next to
+impossible. Around 5000 downloaded packages each week from the main site gives
+a hint, but the packages are mirrored extensively, bundled with numerous OS
+distributions and otherwise retrieved as part of other software.
+
+September: with the release of curl 7.10 it is released under the MIT license
+only.
+
+2003
+----
+
+January: Started working on the distributed curl tests. The autobuilds.
+
+February: the curl site averages at 20000 visits weekly. At any given moment,
+there's an average of 3 people browsing the curl.haxx.se site.
+
+Multiple new authentication schemes are supported: Digest (May), NTLM (June)
+and Negotiate (June).
+
+November: curl 7.10.8 is released. 45000 lines of code. ~55000 unique visitors
+to the curl.haxx.se site. Five official web mirrors.
+
+December: full-fledged SSL for FTP is supported.
+
+2004
+----
+
+January: curl 7.11.0 introduced large file support.
+
+June: curl 7.12.0 introduced IDN support. 10 official web mirrors.
+
+This release bumped the major SONAME to 3 due to the removal of the
+curl_formparse() function
+
+August: Curl and libcurl 7.12.1
+
+    Public curl release number:                82
+    Releases counted from the very beginning: 109
+    Available command line options:            96
+    Available curl_easy_setopt() options:     120
+    Number of public functions in libcurl:     36
+    Amount of public web site mirrors:         12
+    Number of known libcurl bindings:          26
+
+2005
+----
+
+April: GnuTLS can now optionally be used for the secure layer when curl is
+built.
+
+April: Added the multi_socket() API
+
+September: TFTP support was added.
+
+More than 100,000 unique visitors of the curl web site. 25 mirrors.
+
+December: security vulnerability: libcurl URL Buffer Overflow
+
+2006
+----
+
+January: We dropped support for Gopher. We found bugs in the implementation
+that turned out to have been introduced years ago, so with the conclusion that
+nobody had found out in all this time we removed it instead of fixing it.
+
+March: security vulnerability: libcurl TFTP Packet Buffer Overflow
+
+September: The major SONAME number for libcurl was bumped to 4 due to the
+removal of ftp third party transfer support.
+
+November: Added SCP and SFTP support
+
+2007
+----
+
+February: Added support for the Mozilla NSS library to do the SSL/TLS stuff
+
+July: security vulnerability: libcurl GnuTLS insufficient cert verification
+
+2008
+----
+
+November:
+
+    Command line options:         128
+    curl_easy_setopt() options:   158
+    Public functions in libcurl:   58
+    Known libcurl bindings:        37
+    Contributors:                 683
+
+ 145,000 unique visitors. >100 GB downloaded.
+
+2009
+----
+
+March: security vulnerability: libcurl Arbitrary File Access
+
+August: security vulnerability: libcurl embedded zero in cert name
+
+December: Added support for IMAP, POP3 and SMTP
+
+2010
+----
+
+January: Added support for RTSP
+
+February: security vulnerability: libcurl data callback excessive length
+
+March: The project switched over to use git (hosted by github) instead of CVS
+for source code control
+
+May: Added support for RTMP
+
+Added support for PolarSSL to do the SSL/TLS stuff
+
+August:
+
+    Public curl releases:         117
+    Command line options:         138
+    curl_easy_setopt() options:   180
+    Public functions in libcurl:   58
+    Known libcurl bindings:        39
+    Contributors:                 808
+
+ Gopher support added (re-added actually, see January 2006)
+
+2011
+----
+
+February: added support for the axTLS backend
+
+April: added the cyassl backend (later renamed to WolfSSL)
+
+2012
+----
+
+ July: Added support for Schannel (native Windows TLS backend) and Darwin SSL
+ (Native Mac OS X and iOS TLS backend).
+
+ Supports metalink
+
+ October: SSH-agent support.
+
+2013
+----
+
+ February: Cleaned up internals to always uses the "multi" non-blocking
+ approach internally and only expose the blocking API with a wrapper.
+
+ September: First small steps on supporting HTTP/2 with nghttp2.
+
+ October: Removed krb4 support.
+
+ December: Happy eyeballs.
+
+2014
+----
+
+ March: first real release supporting HTTP/2
+
+ September: Web site had 245,000 unique visitors and served 236GB data
+
+2015
+----
+
+ June: support for multiplexing with HTTP/2
+
+ August: support for HTTP/2 server push
+
+ December: Public Suffix List
+
+2016
+----
+
+ January: the curl tool defaults to HTTP/2 for HTTPS URLs
+
+ December: curl 7.52.0 introduced support for HTTPS-proxy!
+
+ First TLS 1.3 support
+
+2017
+----
+
+ September: Added Multi-SSL support
+
+ The web site serves 3100 GB/month
+
+    Public curl releases:         169
+    Command line options:         211
+    curl_easy_setopt() options:   249
+    Public functions in libcurl:  74
+    Contributors:                 1609
+
+ October: SSLKEYLOGFILE support, new MIME API
+
+ November: brotli
+
+2018
+----
+
+ January: new SSH backend powered by libssh
+
+ March: starting with the 1803 release of Windows 10, curl is shipped bundled
+ with Microsoft's operating system.
+
+ July: curl shows headers using bold type face
+
+ October: added DNS-over-HTTPS (DoH) and the URL API
+
+ MesaLink is a new supported TLS backend
+
+ libcurl now does HTTP/2 (and multiplexing) by default on HTTPS URLs
+
+ curl and libcurl are installed in an estimated 5 *billion* instances
+ world-wide.
+
+ October 31: Curl and libcurl 7.62.0
+
+    Public curl releases:         177
+    Command line options:         219
+    curl_easy_setopt() options:   261
+    Public functions in libcurl:  80
+    Contributors:                 1808