See also this page @ref{Новости, on russian}.
-@node Release 5.1.0
+@node Release 7_1_0
+@section Release 7.1.0
+@itemize
+
+@item
+Fixed invalid @file{.hdr} generation when transitional packets are used.
+
+@item
+@option{-all} option appeared in @command{nncp-rm} command, applying to
+all the nodes at once.
+
+@item
+@command{nncp-pkt} can parse @file{.hdr} files.
+
+@item
+Multicasting areas feature appeared. Implemented merely by an additional
+plain packet type with @command{nncp-toss}, @command{nncp-file} and
+@command{nncp-exec} commands modification.
+
+@end itemize
+
+@node Release 7_0_0
+@section Release 7.0.0
+@itemize
+
+@item
+Minimal required Go version 1.13.
+
+@item
+Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
+Because of that, there are backward @strong{incompatible} changes of
+encrypted files (everything laying in the spool directory) and
+@file{.meta} files of chunked transfer.
+
+Current implementation is far from being optimal: it lacks
+parallelizable calculations and has higher memory consumption: nearly
+512 KiB for each 1 GiB of file's data. Future performance and memory
+size optimizations should not lead to packet's format change. But it is
+still several times faster than BLAKE2b.
+
+@item
+Resumed online downloads, because of MTH, require reading only of the
+preceding part of file, not the whole one as was before.
+
+@item
+@command{nncp-hash} utility appeared for calculating file's MTH hash.
+
+@item
+BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
+packets. Lowering number of used primitives. Also, its encrypted
+packet's header is used as an associated data during encryption.
+
+@item
+MultiCast Discovery uses
+@verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
+
+@item
+@command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
+
+@item
+@command{nncp-stat} reports about partly downloaded packets.
+
+@item
+Updated dependencies.
+
+@end itemize
+
+@node Release 6_6_0
+@section Release 6.6.0
+@itemize
+
+@item
+@command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
+commands wait for all background checksummers completion after
+connection is finished.
+
+@item
+Added possibility of address determining through multicast announcement
+in local area network, so called MCD (MultiCast Discovery).
+
+@end itemize
+
+@node Release 6_5_0
+@section Release 6.5.0
+@itemize
+
+@item
+Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
+
+@item
+Fixed possible bad return code ignoring in automatic tosser.
+
+@item
+Fixed race during file descriptors closing when online protocol call is
+finished, that could lead to write error of received packet fragment.
+
+@item
+Kill all packet transmission progress bars in @command{nncp-daemon},
+@command{nncp-call} and @command{nncp-caller} when call is finished.
+
+@end itemize
+
+@node Release 6_4_0
+@section Release 6.4.0
+@itemize
+
+@item
+Fixed possible race in online protocol, that lead to panic.
+
+@end itemize
+
+@node Release 6_3_0
+@section Release 6.3.0
+@itemize
+
+@item
+Fixed possible panic while showing progress during online protocol.
+
+@end itemize
+
+@node Release 6_2_1
+@section Release 6.2.1
+@itemize
+
+@item
+Three places in logs contained excess @code{%s}.
+
+@end itemize
+
+@node Release 6_2_0
+@section Release 6.2.0
+@itemize
+
+@item
+Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
+
+@item
+Yet another logging refactoring and simplification.
+Should be no visible differences to the end user.
+
+@end itemize
+
+@node Release 6_1_0
+@section Release 6.1.0
+@itemize
+
+@item
+Optimization: most commands do not keep opened file descriptors now.
+Previously you can exceed maximal number of opened files if you have got
+many packets in the spool directory.
+
+@item
+Optimization: do not close file descriptor of the file we download
+online. Previously each chunk lead to expensive open/close calls.
+
+@item
+Online downloaded files are saved with @file{.nock} (non-checksummed)
+suffix, waiting either for @command{nncp-check}, or online daemons to
+perform integrity check.
+
+@item
+Optimization: files, that are not resumed, are checksummed immediately
+during the online download, skipping @file{.nock}-intermediate step.
+
+@item
+Ability to store encrypted packet's header in @file{.hdr} file, close to
+the packet itself. That can greatly increase performance of packets
+listing on filesystems with big block's size.
+
+@end itemize
+
+@node Release 6_0_0
+@section Release 6.0.0
+@itemize
+
+@item
+Log uses human readable and easy machine parseable
+@url{https://www.gnu.org/software/recutils/, recfile} format for the
+records, instead of structured RFC 3339 lines. Old logs are not readable
+by @command{nncp-log} anymore.
+
+@item
+@option{-autotoss*} option workability with @command{nncp-daemon}'s
+@option{-inetd} mode.
+
+@item
+Call's @option{when-tx-exists} allows to make a call only when outbound
+packets exists. Combined with seconds-aware cron expression that can be
+used as some kind of auto dialler.
+
+@item
+@command{nncp-cronexpr} command allows you to check validity and
+expectations of specified cron expression.
+
+@end itemize
+
+@node Release 5_6_0
+@section Release 5.6.0
+@itemize
+
+@item
+@option{-autotoss*} option runs tosser not after the call, but every
+second while it is active.
+
+@item
+@option{autotoss}, @option{autotoss-doseen},
+@option{autotoss-nofile}, @option{autotoss-nofreq},
+@option{autotoss-noexec}, @option{autotoss-notrns} options available in
+@option{calls} configuration section. You can configure per-call
+automatic tosser options.
+
+@item
+Use vendoring, instead of @env{GOPATH} overriding during tarball
+installation, because current minimal Go's version is 1.12 and it
+supports modules.
+
+@end itemize
+
+@node Release 5_5_1
+@section Release 5.5.1
+@itemize
+
+@item
+Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
+variables in @file{config} during installation.
+
+@end itemize
+
+@node Release 5_5_0
+@section Release 5.5.0
+@itemize
+
+@item
+Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
+@command{nncp-bundle} and @command{nncp-stat}.
+
+@item
+@command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
+
+@item
+@command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
+options now. Uncompressed packets are not compatible with previous NNCP
+versions.
+
+@item
+@command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
+have @option{-autotoss*} options for running tosser after call is ended.
+
+@item
+Updated dependencies. Minimal required Go version is 1.12.
+
+@end itemize
+
+@node Release 5_4_1
+@section Release 5.4.1
+@itemize
+
+@item
+Fixed @code{SENDMAIL} variable usage during the build.
+
+@end itemize
+
+@node Release 5_4_0
+@section Release 5.4.0
+@itemize
+
+@item
+Updated dependencies.
+
+@item
+Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
+This should not influence package maintainers, because minimal @command{redo}
+implementation is included in tarball.
+
+@end itemize
+
+@node Release 5_3_3
+@section Release 5.3.3
+@itemize
+
+@item
+More various error checks.
+
+@item
+Updated dependencies.
+
+@end itemize
+
+@node Release 5_3_2
+@section Release 5.3.2
+@itemize
+
+@item
+Fixed incorrect logic of @option{onlinedeadline} timeout, where
+connection won't take into account incoming packets events and will
+forcefully disconnect.
+
+@end itemize
+
+@node Release 5_3_1
+@section Release 5.3.1
+@itemize
+
+@item
+Fixed @option{onlinedeadline} workability with call addresses that use
+external commands (@verb{#"|somecmd"#}).
+
+@item
+@command{nncp-stat} has @option{-pkt} option displaying information
+about each packet in the spool.
+
+@end itemize
+
+@node Release 5_3_0
+@section Release 5.3.0
+@itemize
+
+@item
+Progress messages contain prefix, describing the running action.
+
+@item
+Fixed not occurring handshake messages padding.
+
+@item
+Finish all SP protocol related goroutines, less memory leak.
+
+@item
+SP protocol generates less socket write calls, thus generating less TCP
+packets.
+
+@item
+Check @option{onlinedeadline} and @option{maxonlinetime} options every
+second, independently from socket reads (up to 10 seconds).
+
+@item
+Once per minute, if no other traffic exists, PING packets are sent in
+SP-connection. That allows faster determining of connection unworkability.
+
+@item
+@command{nncp-toss} uses lock-file to prevent simultaneous tossing.
+
+@end itemize
+
+@node Release 5_2_1
+@section Release 5.2.1
+@itemize
+
+@item
+Fixed SP protocol error handling, sometimes causing program panic.
+
+@end itemize
+
+@node Release 5_2_0
+@section Release 5.2.0
+@itemize
+
+@item
+Most commands by default show oneline operations progress.
+@option{-progress}, @option{-noprogress} command line options,
+@option{noprogress} configuration file option appeared.
+
+@item
+Fixed incorrect @command{nncp-check} command return code, that returned
+bad code when everything is good.
+
+@item
+Free disk space check during @command{nncp-bundle -rx} call.
+
+@end itemize
+
+@node Release 5_1_2
+@section Release 5.1.2
+@itemize
+
+@item
+@strong{Critical} vulnerability: remote peers authentication could lead
+to incorrect identification of remote side, allowing foreign encrypted
+packets downloading.
+
+@item
+Bugfix: private and public Noise keys were swapped in newly created
+configuration files, that lead to inability to authenticate online peers.
+
+@item
+Explicit directories fsync-ing for guaranteed files renaming.
+
+@end itemize
+
+@node Release 5_1_1
+@section Release 5.1.1
+@itemize
+
+@item
+Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
+
+@end itemize
+
+@node Release 5_1_0
@section Release 5.1.0
@itemize
Added @option{freq.maxsize} configuration file option, forbidding of
freq sending larger than specified size.
+@item
+Ability to notify about successfully executed commands (exec) with
+@option{notify.exec} configuration file option.
+
@end itemize
-@node Release 5.0.0
+@node Release 5_0_0
@section Release 5.0.0
@itemize
@end itemize
-@node Release 4.1
+@node Release 4_1
@section Release 4.1
@itemize
@item Workability on GNU/Linux systems and Go 1.10 is fixed.
@end itemize
-@node Release 4.0
+@node Release 4_0
@section Release 4.0
@itemize
@end itemize
-@node Release 3.4
+@node Release 3_4
@section Release 3.4
@itemize
@item @command{nncp-daemon} can be run as @command{inetd}-service.
@end itemize
-@node Release 3.3
+@node Release 3_3
@section Release 3.3
@itemize
@end itemize
-@node Release 3.2
+@node Release 3_2
@section Release 3.2
@itemize
@item
archives.
@end itemize
-@node Release 3.1
+@node Release 3_1
@section Release 3.1
@itemize
@item
Ability to disable relaying at all using @verb{|-via -|} command line option.
@end itemize
-@node Release 3.0
+@node Release 3_0
@section Release 3.0
@itemize
@end itemize
-@node Release 2.0
+@node Release 2_0
@section Release 2.0
@itemize
@end itemize
-@node Release 1.0
+@node Release 1_0
@section Release 1.0
@itemize
@item
@command{nncp-bundle} command can either create stream of encrypted
-packets, or digest it. It is useful when dealing with stdin/stdout based
-transmission methods (like writing to CD-ROM without intermediate
-prepared ISO image and working with tape drives).
+packets, or digest it. It is useful when dealing with
+@code{stdin}/@code{stdout} based transmission methods (like writing to
+CD-ROM without intermediate prepared ISO image and working with tape
+drives).
@item
@command{nncp-toss} is able to create @file{.seen} files preventing
@end itemize
-@node Release 0.12
+@node Release 0_12
@section Release 0.12
@itemize
@item Sendmail command is called with @env{NNCP_SENDER} environment variable.
@end itemize
-@node Release 0.11
+@node Release 0_11
@section Release 0.11
@itemize
@item @command{nncp-stat}'s command output is sorted by node name.
@end itemize
-@node Release 0.10
+@node Release 0_10
@section Release 0.10
@itemize
@item
@file{SRC} path's element will be used by default.
@end itemize
-@node Release 0.9
+@node Release 0_9
@section Release 0.9
@itemize
@item
@command{nncp-call} command. They were ignored.
@end itemize
-@node Release 0.8
+@node Release 0_8
@section Release 0.8
@itemize
@item
option for unchunked transfer was not in KiBs, but in bytes.
@end itemize
-@node Release 0.7
+@node Release 0_7
@section Release 0.7
@itemize
@item
-Ability to feed @command{nncp-file} from stdin, that uses an encrypted
-temporary file for that.
+Ability to feed @command{nncp-file} from @code{stdin}, that uses an
+encrypted temporary file for that.
@item
Chunked files transmission appeared with corresponding
@end itemize
-@node Release 0.6
+@node Release 0_6
@section Release 0.6
@itemize
@item Small @command{nncp-rm} command appeared.
@item Cryptographic libraries (dependencies) are updated.
@end itemize
-@node Release 0.5
+@node Release 0_5
@section Release 0.5
@itemize
@item
and @command{nncp-freq} commands.
@end itemize
-@node Release 0.4
+@node Release 0_4
@section Release 0.4
@itemize
@end itemize
-@node Release 0.3
+@node Release 0_3
@section Release 0.3
@itemize
@item Fixed compatibility with Go 1.6.
@end itemize
-@node Release 0.2
+@node Release 0_2
@section Release 0.2
@itemize