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
cclientcurlftpgopherhacktoberfesthttphttpsimapsldaplibcurllibrarymqttpop3scpsftptransfer-datatransferring-datauser-agentwebsocket
931fc45f05
The symptom: * Users (usually, but not always) on 2-Wire routers and the Comcast service and a wired connection to their router would find that the second and subsequent DNS lookups from fresh processes using c-ares to resolve the same address would cause the process to never see a reply (it keeps polling for around 1m15s before giving up). The repro: * On such a machine (and yeah, it took us a lot of QA to find the systems that reproduce such a specific problem!), do 'ahost www.secondlife.com', then do it again. The first process's lookup will work, subsequent lookups will time-out and fail. The cause: * init_id_key() was calling randomize_key() *before* it initialized key->state, meaning that the randomness generated by randomize_key() is immediately overwritten with deterministic values. (/dev/urandom was also being read incorrectly in the c-ares version we were using, but this was fixed in a later version.) * This makes the stream of generated query-IDs from any new c-ares process be an identical and predictable sequence of IDs. * This makes the 2-Wire's default built-in DNS server detect these queries as probable-duplicates and (erroneously) not respond at all. |
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| ares | ||
| docs | ||
| hiper | ||
| include | ||
| lib | ||
| m4 | ||
| packages | ||
| perl | ||
| src | ||
| tests | ||
| .cvsignore | ||
| acinclude.m4 | ||
| buildconf | ||
| buildconf.bat | ||
| CHANGES | ||
| CHANGES.0 | ||
| configure.ac | ||
| COPYING | ||
| curl-config.in | ||
| curl-style.el | ||
| CVS-INFO | ||
| install-sh | ||
| libcurl.pc.in | ||
| Makefile.am | ||
| Makefile.dist | ||
| maketgz | ||
| missing | ||
| mkinstalldirs | ||
| README | ||
| reconf | ||
| RELEASE-NOTES | ||
| sample.emacs | ||
| TODO-RELEASE | ||
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README
Curl is a command line tool for transferring data specified with URL
syntax. Find out how to use curl by reading the curl.1 man page or the
MANUAL document. 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.3 man page to
learn how!
You find answers to the most frequent questions we get in the FAQ document.
Study the COPYING file for distribution terms and similar. If you distribute
curl binaries or other binaries that involve libcurl, you might enjoy the
LICENSE-MIXING document.
CONTACT
If you have problems, questions, ideas or suggestions, please contact us
by posting to a suitable mailing list. See http://curl.haxx.se/mail/
All contributors to the project are listed in the THANKS document.
WEB SITE
Visit the curl web site or mirrors for the latest news and downloads:
Sweden http://curl.haxx.se/
Mirrors http://curlm.haxx.se/
CVS
To download the very latest source off the CVS server do this:
cvs -d :pserver:anonymous@cool.haxx.se:/cvsroot/curl login
(just press enter when asked for password)
cvs -d :pserver:anonymous@cool.haxx.se:/cvsroot/curl co curl
(you'll get a directory named curl created, filled with the source code)
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.