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What is FSP

FSP stands for File Service Protocol. It is a very lightweight UDP based protocol for transferring files. FSP has many benefits over FTP, mainly for running anonymous archives. FSP protocol is valuable in all kinds of environments because it is one of the only TCP/IP protocols that is not aggressive about bandwidth, while still being highly fault tolerant.

FSP is what anonymous FTP should be

FSP: reliable and bandwidth friendly way to access publicly available data. Some people call it UDP FTP because it runs on port 21 too.

Run FSP Sever!

Biggest help what you can do for FSP Project is to run a fspd server yourself. fspd is a very light service and it can operate from inetd. See Server configuration entry in FAQ. We will happily advertise your server on our pages.

… and join us!

Programmers, please consider to Join FSP project! - We have a lot of things on our TODO list. You can also help with testing of FSP beta codebase. Our current goal is to have stable version out as fast as possible. Direct your input about problems found to the fsp-users mailing list. Also try to compile at all available machines.

Security info

FSP library older than 0.9 has overflow bug. See security page for more information.

Latest software

FSP 2.8.1 Beta 29 - 24-Aug-2019
FSP C Library 0.14 - 16-Aug-2019
Win32-FSP 2005.03 - 03-Mar-2005
FSP Client 0.93.1 - 16-Aug-2019
FSP proxy 0.9 - 06-May-2020
Java FSP library 1.0.0-RC11 - 29-Apr-2020
Download Machine 0.25 - 05-May-2020
New FSP FAQ 0.2 - 03-Jan-2005

News

06-May-2020: FSP proxy updated to 0.9. Notable changes are improved documentation and packaging. zip file contains fat jar for easier deployement. Also uploaded to Maven Central.

29-Apr-2020: Web site migrated from WML to Hugo and Bazaar migrated to Git. Both programs were unmaintained and no more available on modern unix system. Updated Latest Software links. Java FSP library release 1.0.0-RC11 Maven2 fsp.sf.net repo removed, artifacts moved to Maven Central.

9-Sep-2014: FSP 2.8.1 Beta 27 released. Bugfix release, fixed some compilation problems on modern systems and few bugs found by Clang. Cleaned web pages, removed some old links, added wikipedia link. Added few FSP quotes from Slashdot. FSP C Library 0.12 released too, build system update, no code changes.

30-Oct-2009: FSP Proxy 0.8 released

20-Oct-2009: FSP Project Maven 2 repository is http://fsp.sourceforge.net/m2 Currently only jfsplib is there but other projects will be added later.

01-Oct-2009: FSP suite 2.8.1 beta 26 released. Major bugfix version. It fixed segfault in FSP command line clients on newer Linux glibc, large file support is now correctly detected on linux systems, upload handling is now much smarter - it allows reupload last block and non continuous upload check was improved. Overwriting check for uploaded files was reversed by mistake, added protocol support for sending error codes (requested a lot), previously FSP protocol supported only text error message. Code portability increased by avoiding configure time checks for int and long variable sizes. fsetupcmd have new -l switch for listing known fsp servers.

01-Oct-2009: Java FSP library 1.0rc8 released It fixed URLStreamHandler which was not hooked properly and added bunch of methods to URLConnection, infinite timeouts added. Added locking system for synchronizing multiple writers in FSPsession.

20-Sep-2009: Java FSP library improved a lot. Now it comes with WRITE support. Get 1.0 rc7 here

16-Sep-2009: Historic FSP releases added to Sourceforge release system. Wanted to see FSP 1.0? we have it.

15-Sep-2009: New FSP server 88.102.83.205 21 (not 24h/day online) with FSP source code. I hope it will be usefull for testing.

13-Sep-2009: Java FSP library have now own Ohloh page.

10-Sep-2009: After more than 4 years new release of fsp server and clients is finally available. Lot of fixes, GNU autotools build system was replaced by SCons, rmdir bug fixed, FSP now uses larger packet sizes by default so it should be bit faster. We also got new more user friendly Mantis Bug Tracker.

13-Jun-2009: FSPLIB 0.11 released, SCons build system fixed. Library name is now libfsplib.a as it used to be in libtool days and shared library can now be build. This fsplib release is based on work and bug report from Ahmed El-Mahmoudy, Debian fsplib maintainer.

13-Jun-2009: Elinks browser added to Software with FSP support page. We got 2 bugfixes to fsplib from these folks.

11-Jun-2009: FSPLIB 0.10 released, minor bugfix version.

08-Jul-2009: Version control System switched from old CVS to new modern version control system Bazaar.

Older news items are archived.