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A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
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Stefan Eissing a33bcc9b53
transfer: fix sendrecv() without interim poll 
There was a "clever" optimization that skipped sendrecv() handling when
the transfer's pollset was empty. This happens for paused transfers, for
example.

Unforunately, if the libcurl application never calls curl_multi_poll(),
the pollset is and will aways remain empty, prevent the transfer from
progressing.

Remove this "optimization" and always try send/receive where applicable.

Fixes #14898
Reported-by: Victor Kislov
Closes #14901
2024-09-13 22:21:33 +02:00
.circleci GHA/macos: improve, fix gcc/llvm, add new test matrix 2024-07-19 12:45:18 +02:00
.github vtls/rustls: rustls-ffi 0.14.0 update 2024-09-13 14:11:49 +02:00
CMake build: add poll() detection for cross-builds 2024-08-30 17:14:33 +02:00
docs vtls/rustls: support strong CSRNG data 2024-09-13 14:11:56 +02:00
include RELEASE-NOTES: synced 2024-09-11 08:20:09 +02:00
lib transfer: fix sendrecv() without interim poll 2024-09-13 22:21:33 +02:00
LICENSES copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
m4 lib: remove use of RANDOM_FILE 2024-09-02 18:42:32 +02:00
packages tests: delete libhostname.so and chkhostname 2024-08-27 23:40:48 +02:00
plan9 copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
projects misc: general C style cleanups 2024-08-22 23:43:45 +02:00
scripts libcurl-docs: CURLINFO_LOCAL_* work for QUIC as well as TCP 2024-09-11 08:16:28 +02:00
src autotools: fix --with-ca-embed build rule 2024-09-12 19:58:14 +02:00
tests request: correctly reset the eos_sent flag 2024-09-13 13:28:10 +02:00
winbuild tidy-up: OS names 2024-08-04 19:17:45 +02:00
.azure-pipelines.yml CI/azure: disable parallel tests, allow IDN tests 2024-08-19 14:09:14 +02:00
.dir-locals.el copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.git-blame-ignore-revs copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.gitattributes winbuild: MS-DOS batch tidy-ups 2024-07-02 19:26:15 +02:00
.gitignore CHANGES: rename to CHANGES.md, no longer generated 2024-08-01 13:37:12 +02:00
.mailmap mailmap: Aki Sakurai 2024-08-30 10:28:34 +02:00
acinclude.m4 autotools: fix --with-ca-embed build rule 2024-09-12 19:58:14 +02:00
appveyor.sh cmake: show warning if libpsl is not found 2024-08-15 10:38:46 +02:00
appveyor.yml CI: update names of jobs that are now building tests [ci skip] 2024-09-06 17:14:29 +02:00
buildconf copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
buildconf.bat buildconf.bat: remove outdated groff/nroff use 2024-03-07 22:38:16 +01:00
CHANGES.md CHANGES: rename to CHANGES.md, no longer generated 2024-08-01 13:37:12 +02:00
CMakeLists.txt cmake: ensure CURL_USE_OPENSSL/USE_OPENSSL_QUIC are set in sync 2024-09-12 12:53:50 +02:00
configure.ac autotools: fix MS-DOS builds 2024-09-06 21:47:35 +02:00
COPYING COPYING: update copyright year 2024-01-08 18:40:06 +01:00
curl-config.in build: tidy up internal macro names for libcurl.pc 2024-08-12 14:56:41 +02:00
Dockerfile maketgz: move from / into scripts 2024-09-05 17:07:41 +02:00
GIT-INFO.md GIT-INFO.md: remove version requirements 2024-07-08 23:06:05 +02:00
libcurl.pc.in build: tidy up internal macro names for libcurl.pc 2024-08-12 14:56:41 +02:00
Makefile.am maketgz: move from / into scripts 2024-09-05 17:07:41 +02:00
Makefile.dist Makefile.dist: fix ca-firefox target 2024-09-06 21:46:05 +02:00
README docs: minor grammar fixes 2022-09-29 10:44:12 +02:00
README.md README: refresh 2024-08-25 23:31:53 +02:00
RELEASE-NOTES RELEASE-NOTES: synced 2024-09-12 20:31:41 +02:00
renovate.json GHA: unify http3 workflows into one 2024-06-01 10:57:23 +02:00
REUSE.toml lib: enable strerror and strncpy checksrc warnings in subdirs 2024-09-09 16:51:21 +02:00
SECURITY.md docs: Clarify OpenSSF Best Practices vs Scorecard 2024-08-22 11:50:20 +02:00

README.md

curl logo

Curl is a command-line tool for transferring data specified with URL syntax. Learn how to use curl by reading the manpage or everything curl.

Find out how to install curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl manpage to learn how.

Open Source

curl is Open Source and is distributed under an MIT-like license.

Contact

Contact us on a suitable mailing list or use GitHub issues/ pull requests/ discussions.

All contributors to the project are listed in the THANKS document.

Commercial support

For commercial support, maybe private and dedicated help with your problems or applications using (lib)curl visit the support page.

Website

Visit the curl website for the latest news and downloads.

Source code

Download the latest source from the Git server:

git clone https://github.com/curl/curl.git

Security problems

Report suspected security problems via our HackerOne page and not in public.

Notice

Curl contains pieces of source code that is Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan. This notice is included here to comply with the distribution terms.

Backers

Thank you to all our backers! 🙏 Become a backer.

Sponsors

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