2a94293efd
Hauke Duden provided an example program that made the multi interface crash. His example simply used the multi interface and did first one FTP transfer and after completion it used a second easy handle and did another FTP transfer on the same FTP server. This triggered a bug in the "delayed easy handle kill" system that curl uses: when an FTP connection is left alive it must keep an easy handle around internally - only for the purpose of having an easy handle when it later disconnects it. The code assumed that when the easy handle was removed and an internal reference was made, that version could be killed later on when a new easy handle came using the same connection. This was wrong as Hauke's example showed that the removed handle wasn't killed for real until later. This caused a double close attempt => segfault.
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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 for the latest news and downloads:
http://curl.haxx.se/
GIT
To download the very latest source off the GIT server do this:
git clone git://github.com/bagder/curl.git
(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.