dest-unreach / socat
what: "netcat++" (extended design, new implementation)
OS: AIX, BSD, HP-UX, Linux, Solaris e.a. (UNIX)
lic: GPL2
inst: tar x...; ./configure; make; make install
doc: README; socat.html, socat.1; xio.help
ui: command line
exa: socat TCP6-LISTEN:8080,reuseaddr,fork PROXY:proxy:www.domain.com:80
keyw: tcp, udp, ipv6, raw ip, unix-socket, pty, pipe, listen, socks4, socks4a,
proxy-connect, ssl-client, filedescriptor, readline, stdio,
exec, system, file, open, tail -f, termios, setsockopt, chroot,
fork, perm, owner, trace, dump, dgram, ext3, resolver, datagram,
multicast, broadcast, interface, socket, sctp, generic, ioctl
2021-10-31: Socat version 1.7.4.2 fixes a lot of bugs, e.g., for options -r and -R.
2021-01-10: Socat version 1.7.4.1 fixes compilation on 32 bit systems and file transfer with OpenSSL.
2021-01-04: Socat version 1.7.4.0 fixes a couple of bugs including a very theoretical security issue, restauration of DTLS using UDP, some porting issues, and last but not least several new features: VSOCK support, OpenSSL SNI, raw data dump, and more. See file CHANGES and Release Notes.
Thanks to all contributors for their invaluable patches!
2020-01-05: Socat version 1.7.3.4 fixes a few bugs most of which were regressions, see CHANGES. All people that sent feature contributions or recommended new features: Sorry, this is only a bug fix and porting release. Please be patient!
2015-04-06: Socat version 2 beta 8 (or bz2) fixes the possible denial of service attack (CVE-2015-1379), contains all fixes introduced up to 1.7.3.0 and corrects a few version 2 specific issues.
You can download socat 1.7.4.2 in source form (.gz, .bz2). Feel free to check the md5 or sha256 hashes.
Git repository containing socat 1.6.0.0 and all later version 1 releases is available.
There is a page with socat patches and contributions.
Classical documentation:
Mini tutorials: