curl and libcurl 8.17.1

 Public curl releases:         272
 Command line options:         273
 curl_easy_setopt() options:   308
 Public functions in libcurl:  100
 Contributors:                 3536

This release includes the following changes:


This release includes the following bugfixes:

 o asyn-thrdd: release rrname if ares_init_options fails [41]
 o checksrc.pl: detect assign followed by more than one space [26]
 o cmake: adjust defaults for target platforms not supporting shared libs [35]
 o cmake: disable `CURL_CA_PATH` auto-detection if `USE_APPLE_SECTRUST=ON` [16]
 o conncache: silence `-Wnull-dereference` on gcc 14 RISC-V 64 [17]
 o cshutdn: acknowledge FD_SETSIZE for shutdown descriptors [25]
 o curl: fix progress meter in parallel mode [15]
 o CURLINFO: remove 'get' and 'get the' from each short desc [50]
 o CURLINFO_SCHEME/PROTOCOL: they return the "scheme" for a "transfer" [48]
 o CURLINFO_TLS_SSL_PTR.md: remove CURLINFO_TLS_SESSION text [49]
 o CURLOPT_READFUNCTION.md: clarify the size of the buffer [47]
 o CURLOPT_SSH_KEYFUNCTION.md: fix minor indent mistake in example
 o digest_sspi: properly free sspi identity [12]
 o docs: fix checksrc `EQUALSPACE` warnings [21]
 o docs: mention umask need when curl creates files [56]
 o ftp: refactor a piece of code by merging the repeated part [40]
 o gnutls: report accurate error when TLS-SRP is not built-in [18]
 o gtls: add return checks and optimize the code [2]
 o gtls: skip session resumption when verifystatus is set
 o INSTALL-CMAKE.md: document static option defaults more [37]
 o lib: cleanup for some typos about spaces and code style [3]
 o lib: fix gssapi.h include on IBMi [55]
 o lib: refactor the type of funcs which have useless return and checks [1]
 o m4/sectrust: fix test(1) operator [4]
 o mbedtls: fix potential use of uninitialized `nread` [8]
 o mqtt: reject overly big messages [39]
 o openssl: release ssl_session if sess_reuse_cb fails [43]
 o openssl: remove code handling default version [28]
 o osslq: code readability [5]
 o pytest: skip H2 tests if feature missing from curl [46]
 o rtmp: fix double-free on URL parse errors [27]
 o rtmp: precaution for a potential integer truncation [54]
 o schannel: fix memory leak of cert_store_path on four error paths [23]
 o setopt: disable CURLOPT_HAPROXY_CLIENT_IP on NULL [30]
 o setopt: when setting bad protocols, don't store them [9]
 o tests/data: replace hard-coded test numbers with `%TESTNUMBER` [33]
 o tests/server: do not fall back to original data file in `test2fopen()` [32]
 o tftp: release filename if conn_get_remote_addr fails [42]
 o tool: consider (some) curl_easy_setopt errors fatal [7]
 o tool_help: add checks to avoid unsigned wrap around [14]
 o tool_ipfs: check return codes better [20]
 o tool_operate: remove redundant condition [19]
 o tool_paramhlp: refuse --proto remove all protocols [10]
 o urlapi: fix mem-leaks in curl_url_get error paths [22]
 o vtls: fix CURLOPT_CAPATH use [51]
 o vtls: handle possible malicious certs_num from peer [53]
 o wcurl: import v2025.11.09 [29]
 o wolfSSL: able to differentiate between IP and DNS in alt names [13]

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 Builds using VS2008
 o OpenSSL 1.x support
 o OpenSSL-QUIC
 o Support for c-ares versions before 1.16.0
 o Support for Windows XP/2003
 o Windows CE support

 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:

  Andrew Kirillov, Brad King, Dan Fandrich, Daniel Stenberg, Jiyong Yang,
  Juliusz Sosinowicz, renovate[bot], Samuel Henrique, Stanislav Fort,
  Stefan Eissing, Thomas Klausner, Viktor Szakats, Xiaoke Wang
  (13 contributors)

References to bug reports and discussions on issues:

 [1] = https://curl.se/bug/?i=19386
 [2] = https://curl.se/bug/?i=19366
 [3] = https://curl.se/bug/?i=19370
 [4] = https://curl.se/bug/?i=19371
 [5] = https://curl.se/bug/?i=19394
 [7] = https://curl.se/bug/?i=19385
 [8] = https://curl.se/bug/?i=19393
 [9] = https://curl.se/bug/?i=19389
 [10] = https://curl.se/bug/?i=19388
 [12] = https://curl.se/bug/?i=19426
 [13] = https://curl.se/bug/?i=19364
 [14] = https://curl.se/bug/?i=19377
 [15] = https://curl.se/bug/?i=19383
 [16] = https://curl.se/bug/?i=19380
 [17] = https://curl.se/bug/?i=19378
 [18] = https://curl.se/bug/?i=19365
 [19] = https://curl.se/bug/?i=19381
 [20] = https://curl.se/bug/?i=19382
 [21] = https://curl.se/bug/?i=19379
 [22] = https://curl.se/bug/?i=19440
 [23] = https://curl.se/bug/?i=19423
 [25] = https://curl.se/bug/?i=19439
 [26] = https://curl.se/bug/?i=19375
 [27] = https://curl.se/bug/?i=19438
 [28] = https://curl.se/bug/?i=19354
 [29] = https://curl.se/bug/?i=19430
 [30] = https://curl.se/bug/?i=19434
 [32] = https://curl.se/bug/?i=19429
 [33] = https://curl.se/bug/?i=19427
 [35] = https://curl.se/bug/?i=19420
 [37] = https://curl.se/bug/?i=19419
 [39] = https://curl.se/bug/?i=19415
 [40] = https://curl.se/bug/?i=19411
 [41] = https://curl.se/bug/?i=19410
 [42] = https://curl.se/bug/?i=19409
 [43] = https://curl.se/bug/?i=19405
 [46] = https://curl.se/bug/?i=19412
 [47] = https://curl.se/bug/?i=19402
 [48] = https://curl.se/bug/?i=19403
 [49] = https://curl.se/bug/?i=19404
 [50] = https://curl.se/bug/?i=19406
 [51] = https://curl.se/bug/?i=19401
 [53] = https://curl.se/bug/?i=19397
 [54] = https://curl.se/bug/?i=19399
 [55] = https://curl.se/bug/?i=19336
 [56] = https://curl.se/bug/?i=19396
