curl and libcurl 8.13.1 Public curl releases: 267 Command line options: 268 curl_easy_setopt() options: 307 Public functions in libcurl: 96 Contributors: 3386 This release includes the following changes: This release includes the following bugfixes: o async-threaded resolver: use ref counter [10] o build: check required rustls-ffi version [46] o certs: drop unused `default_bits` from `.prm` files [45] o cmake/FindNGTCP2: simplify multi-pkg-config detection [27] o cmake: quotes, whitespace, use `VERSION_GREATER_EQUAL` [33] o cmake: use `INCLUDE_DIRECTORIES` prop to specify local header dirs [47] o cmake: use absolute paths for completion targets [40] o configure: fix --disable-rt [20] o configure: restore link checks [25] o conncache: make Curl_cpool_init return void [15] o content_encoding: Transfer-Encoding parser improvements [31] o contrithanks.sh: drop set -e [6] o curl_krb5: only use functions if FTP is still enabled [21] o curl_multibyte: fixup low-level calls, include in unity builds [55] o docs: fix incorrect shell substitution in docker run example command [51] o eventfd: fix feature guards [24] o genserv.pl: fail with a message if `openssl` is missing or failing [14] o hostip: fix build without threaded-resolver and without DoH [17] o hostip: show the correct name on proxy resolve error [37] o http2: fix stream window size after unpausing [34] o HTTP3.md: fix incorrect variable placeholders [30] o http: fix a build error when all auths are disabled [16] o http_aws_sigv4: add additional verbose log statements [39] o http_negotiate: fix non-SSL build with GSSAPI [23] o https-connect: fix httpsrr target check [36] o if2ip: build the function also if FTP is present [19] o INSTALL-CMAKE.md: fix typo o INSTALL.md: update the minimal libcurl size example o KNOWN_BUGS: fix link in sivg4 issue 16.3 [26] o lib: add const to clientwriter tables o lib: include files using known path [48] o lib: make Curl_easyopts const [44] o lib: unify conversions to/from hex [3] o libtest/first: stop defining MEMDEBUG_NODEFINES [32] o make: clean tests better [60] o mk-ca-bundle.pl: follow redirects [53] o openssl-quic: fix shutdown when stream not open [11] o parsedate: provide Curl_wkday also for GnuTLS builds [13] o processhelp.pm: avoid potential endless loop, log more (Windows) [5] o rand: update comment on Curl_rand_bytes weak random [35] o rustls: make max size of cert and key reasonable [41] o scripts: completion.pl: sort the completion file for all shells [9] o scripts: fix --opts-dir help in completion.pl o socket: use accept4 when available [7] o socketpair: support pipe2 where available [56] o test1658: add unit test for the HTTPS RR decoder [28] o test: make unittest 1308 into a libtest [4] o tests/ech_tests.sh: sync shebang with rest of bash scripts [42] o tests/README.md: document --test-duphandle [8] o tests/README.md: list the openssl tool among the prerequisites [12] o tests/serverhelp: remove last remnants of http-pipe server [1] o tests/tunit: make a separate directory for tool-based unit tests [54] o tests: Add https-mtls server to force client auth [57] o tests: fix some test tag mismatches o tests: mark ipfs tests to require ipfs [2] o tests: move a boolean variable out of the path section o tests: prefer `--insecure` over `-k` [43] o tests: remove some unused test case sections o tests: unify test case keywords o tests: use a more portable null device path [38] o VERSIONS: list all past releases [22] o vtls: fix build with ssl but without http [18] o winbuild: add the deprecation warning to the README [29] This release includes the following known bugs: See https://curl.se/docs/knownbugs.html For all changes ever done in curl: See https://curl.se/changes.html Planned upcoming removals include: o Support for the msh3 HTTP/3 backend o The winbuild build system o TLS libraries not supporting TLS 1.3 See https://curl.se/dev/deprecate.html This release would not have looked like this without help, code, reports and advice from friends like these: Abhinav Singhal, Andrew Kirillov, Andy Pan, Carlos Henrique Lima Melara, Dagobert Michelsen, Dan Fandrich, Daniel Engberg, Daniel McCarney, Daniel Stenberg, Demi Marie Obenour, dependabot[bot], Harry Sintonen, Jake Yuesong Li, Jean-Christophe Amiel, Johan Eliasson, Jonathan Rosa, Kai Pastor, Nigel Brittain, Pavel Kropachev, Ray Satiro, renovate[bot], Stefan Eissing, Tomas Volf, Viktor Szakats, x1sc0 on github, Yedaya Katsman (26 contributors) References to bug reports and discussions on issues: [1] = https://curl.se/bug/?i=16924 [2] = https://curl.se/bug/?i=16947 [3] = https://curl.se/bug/?i=16888 [4] = https://curl.se/bug/?i=16891 [5] = https://curl.se/bug/?i=16908 [6] = https://curl.se/bug/?i=16914 [7] = https://curl.se/bug/?i=16979 [8] = https://curl.se/bug/?i=16944 [9] = https://curl.se/bug/?i=16985 [10] = https://curl.se/bug/?i=16916 [11] = https://curl.se/bug/?i=16998 [12] = https://curl.se/bug/?i=16942 [13] = https://curl.se/bug/?i=16943 [14] = https://curl.se/bug/?i=16926 [15] = https://curl.se/bug/?i=16936 [16] = https://curl.se/bug/?i=16939 [17] = https://curl.se/bug/?i=16938 [18] = https://curl.se/bug/?i=16935 [19] = https://curl.se/bug/?i=16933 [20] = https://curl.se/bug/?i=16932 [21] = https://curl.se/bug/?i=16925 [22] = https://curl.se/bug/?i=16907 [23] = https://curl.se/bug/?i=16919 [24] = https://curl.se/mail/lib-2025-04/0000.html [25] = https://curl.se/mail/lib-2025-04/0004.html [26] = https://curl.se/bug/?i=17007 [27] = https://curl.se/bug/?i=16980 [28] = https://curl.se/bug/?i=16972 [29] = https://curl.se/bug/?i=16957 [30] = https://curl.se/bug/?i=17008 [31] = https://curl.se/bug/?i=16956 [32] = https://curl.se/bug/?i=16978 [33] = https://curl.se/bug/?i=17002 [34] = https://curl.se/bug/?i=16955 [35] = https://curl.se/bug/?i=16965 [36] = https://curl.se/bug/?i=16966 [37] = https://curl.se/bug/?i=16958 [38] = https://curl.se/bug/?i=16929 [39] = https://curl.se/bug/?i=16952 [40] = https://curl.se/bug/?i=16946 [41] = https://curl.se/bug/?i=16951 [42] = https://curl.se/bug/?i=17001 [43] = https://curl.se/bug/?i=16878 [44] = https://curl.se/bug/?i=16950 [45] = https://curl.se/bug/?i=16999 [46] = https://curl.se/bug/?i=16922 [47] = https://curl.se/bug/?i=16993 [48] = https://curl.se/bug/?i=16991 [51] = https://curl.se/bug/?i=16990 [53] = https://curl.se/bug/?i=16995 [54] = https://curl.se/bug/?i=16983 [55] = https://curl.se/bug/?i=16742 [56] = https://curl.se/bug/?i=16987 [57] = https://curl.se/bug/?i=16923 [60] = https://curl.se/bug/?i=16986