5 See also this page @ref{Новости, on russian}.
12 Fixed @command{nncp-daemon} failing with unauthenticated connection and
13 enabled @option{-autotoss}.
18 @section Release 8.8.0
22 Fixed buildability under Go 1.19.
25 Minimal required Go version is 1.17.
33 @section Release 8.7.2
37 More intuitive, clear and slightly more flexible behaviour of @command{nncp-rm}.
40 @command{nncp-rm} also removes corresponding @file{hdr/} file for each
46 @section Release 8.7.1
50 @command{nncp-xfer} now correctly checks for @file{seen/} files for
56 @section Release 8.7.0
60 @command{nncp-ack} does not acknowledge ACK-packets, preventing an
64 @command{nncp-ack} previously did not remove corresponding @file{hdr/} files.
67 @command{nncp-rm} now takes list of packet from @code{stdin} when
68 @option{-pkt} option is used.
71 @command{nncp-ack} now generates list of ACK packets it created, that
72 could be used as an input to @command{nncp-rm} to remove outbound ACK
78 @section Release 8.6.0
82 @command{nncp-xfer} checks if locally copied packet's checksum differs
83 from the source's one.
86 @command{nncp-call} has bad return code if its queues contain unfinished jobs.
89 @command{nncp-ack} command appeared, that sends explicit packet receipt
90 acknowledgement (ACK packet). That acknowledgement deletes referenced
91 packet from the outbound spool.
94 Ability to turn @code{fsync} operation off using @env{$NNCPNOSYNC=1}
98 Added various indices in documentation, that should help searching in it.
103 @section Release 8.5.0
107 Fixed @command{nncp-bundle} workability.
110 Mistakenly @option{-mcd-wait} option was enabled by default in
114 Ability to override internal default timeout for online protocol through
115 @env{$NNCPDEADLINE} environment variable. Can be useful for very high
119 NNCP builds on OpenBSD.
124 @section Release 8.4.0
128 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
129 configuration options) are now regular expressions. By default
130 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
133 @command{nncp-call} command has @option{-mcd-wait} option to wait for
134 multicast packet about node's address.
137 @command{nncp-file} command skips everything that is neither regular
138 file nor directory during pax-archive creation.
143 @section Release 8.3.0
147 Fixed building issues on 32-bit systems.
152 @section Release 8.2.0
156 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
157 transport protocol, making it able to work as an ordinary TCP server
158 inside overlay network.
161 Yggdrasil's @code{prv;bind1,bind2;pub@dots{}}-like configuration strings are
162 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
165 Ability to pass multicast-related parameters to Yggdrasil configuration.
168 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
169 sockets simultaneously.
172 @command{nncp-daemon}'s listening on peering endpoint socket is optional
173 -- you can be reached through the peers.
178 @section Release 8.1.0
182 @command{nncp-cfgdir} does not require @code{self} section existence in
186 Ability to act as Yggdrasil network client, using online protocol on top of it.
191 @section Release 8.0.2
195 Fixed sending ability to areas.
200 @section Release 8.0.1
204 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
205 then chunked transfer mode was forcefully turned on anyway.
208 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
213 @section Release 8.0.0
217 @strong{Incompatible} encrypted packet format change: payload and pad
218 sizes are sent in-bound in the encrypted stream. That gives ability to
219 streamingly create encrypted packets, without knowing sizes in advance,
220 without creating temporary file or buffer data in memory.
223 Proper encrypted packet padding verification is done now. This is not
224 critical issue, but previously neither padding value, nor its size were
225 authenticated, giving ability to iteratively strip trailing bytes and
226 determine payload's size by observing the reaction of the encrypted
230 @command{nncp-exec} loses its @option{-use-tmp} option, because of
231 streaming-compatible encrypted packets format.
234 @command{nncp-file} and @command{nncp-exec} commands have
235 @option{-maxsize} option, limiting maximal resulting encrypted packet's
236 maximal size (returning error if it is exceeded). Could be useful,
237 because no payload size could be known in advance.
242 @section Release 7.7.0
246 Experimental @code{kqueue} and @code{inotify} based notifications
247 support about spool directory changes, for reducing their often reading
251 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
252 subdirectories, for faster scanning of spool directories.
253 Current files migration required:
256 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
258 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
261 find . -type f -name "*.seen" | while read fn ; do
262 mv $fn seen/$@{fn%.seen@}
266 $ find $NNCPSPOOL -type d -name area | while read area ; do
267 find $area -type f -name "*.seen" | while read fn ; do
276 @section Release 7.6.0
280 Logging may be done to specified opened file descriptor
281 (@env{$NNCPLOG=FD:5} for example).
282 That is friendly to use under @command{daemontools}.
285 Added additional checks of public keys existence in configuration file,
286 preventing some commands from failing.
291 @section Release 7.5.1
295 NNCP builds on NetBSD.
300 @section Release 7.5.0
304 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
305 will contain remote side's address (when running under appropriate
306 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
309 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
312 Do not exit if some of MCD network interfaces can not be listened --
313 only warn about that.
318 @section Release 7.4.0
322 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
327 @section Release 7.3.2
331 @command{hjson-cli} utility builds in vendor-mode now.
336 @section Release 7.3.1
340 Fixed possibly left opened file descriptor in online commands.
343 Severely decreased memory usage of MTH hashing.
348 @section Release 7.3.0
352 Fixed some workability problems on 32-bit systems with big files.
355 Ability to use directory with a bunch of files as a configuration.
356 @command{nncp-cfgdir} command appeared.
361 @section Release 7.2.1
365 Small optimizations in online commands.
370 @section Release 7.2.0
374 @command{nncp-trns} command appeared for manual transition packets creation.
377 If destination node of transitional packet has non empty @option{via}
378 route, then do not ignore, but use it.
381 Do not relay multicast packet to area message's originator, that
382 obviously has seen its own packet.
385 Much less memory usage during MTH hashing when offset is zero: when
386 packet is not resumed, but for example checked with @command{nncp-check}
392 @section Release 7.1.1
396 Fixed failing directories @code{fsync} after @file{.seen} file creation.
401 @section Release 7.1.0
405 Multicasting areas feature appeared. Implemented merely by an additional
406 plain packet type with @command{nncp-toss}, @command{nncp-file} and
407 @command{nncp-exec} commands modification.
410 Fixed workability of @command{nncp-file} and @command{nncp-exec}
411 commands, that use temporary file (@code{stdin} and @option{-use-tmp}).
414 Fixed disappearing bad return code in @command{nncp-exec} command.
417 Fixed invalid @file{.hdr} generation when transitional packets are used.
420 @option{-all} option appeared in @command{nncp-rm} command, applying to
421 all the nodes at once.
424 @option{-cycle} option appeared in @command{nncp-check} command, looping
425 the check in infinite cycle.
428 @command{nncp-rm} command can take node alias name.
431 @command{nncp-pkt} can parse @file{.hdr} files.
436 @section Release 7.0.0
440 Minimal required Go version is 1.13.
443 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
444 Because of that, there are backward @strong{incompatible} changes of
445 encrypted files (everything laying in the spool directory) and
446 @file{.meta} files of chunked transfer.
448 Current implementation is far from being optimal: it lacks
449 parallelizable calculations and has higher memory consumption: nearly
450 512 KiB for each 1 GiB of file's data. Future performance and memory
451 size optimizations should not lead to packet's format change. But it is
452 still several times faster than BLAKE2b.
455 Resumed online downloads, because of MTH, require reading only of the
456 preceding part of file, not the whole one as was before.
459 @command{nncp-hash} utility appeared for calculating file's MTH hash.
462 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
463 packets. Lowering number of used primitives. Also, its encrypted
464 packet's header is used as an associated data during encryption.
467 MultiCast Discovery uses
468 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
471 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
474 @command{nncp-stat} reports about partly downloaded packets.
477 Updated dependencies.
482 @section Release 6.6.0
486 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
487 commands wait for all background checksummers completion after
488 connection is finished.
491 Added possibility of address determining through multicast announcement
492 in local area network, so called MCD (MultiCast Discovery).
497 @section Release 6.5.0
501 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
504 Fixed possible bad return code ignoring in automatic tosser.
507 Fixed race during file descriptors closing when online protocol call is
508 finished, that could lead to write error of received packet fragment.
511 Kill all packet transmission progress bars in @command{nncp-daemon},
512 @command{nncp-call} and @command{nncp-caller} when call is finished.
517 @section Release 6.4.0
521 Fixed possible race in online protocol, that lead to panic.
526 @section Release 6.3.0
530 Fixed possible panic while showing progress during online protocol.
535 @section Release 6.2.1
539 Three places in logs contained excess @code{%s}.
544 @section Release 6.2.0
548 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
551 Yet another logging refactoring and simplification.
552 Should be no visible differences to the end user.
557 @section Release 6.1.0
561 Optimization: most commands do not keep opened file descriptors now.
562 Previously you can exceed maximal number of opened files if you have got
563 many packets in the spool directory.
566 Optimization: do not close file descriptor of the file we download
567 online. Previously each chunk lead to expensive open/close calls.
570 Online downloaded files are saved with @file{.nock} (non-checksummed)
571 suffix, waiting either for @command{nncp-check}, or online daemons to
572 perform integrity check.
575 Optimization: files, that are not resumed, are checksummed immediately
576 during the online download, skipping @file{.nock}-intermediate step.
579 Ability to store encrypted packet's header in @file{.hdr} file, close to
580 the packet itself. That can greatly increase performance of packets
581 listing on filesystems with big block's size.
586 @section Release 6.0.0
590 Log uses human readable and easy machine parseable
591 @url{https://www.gnu.org/software/recutils/, recfile} format for the
592 records, instead of structured RFC 3339 lines. Old logs are not readable
593 by @command{nncp-log} anymore.
596 @option{-autotoss*} option workability with @command{nncp-daemon}'s
597 @option{-inetd} mode.
600 Call's @option{when-tx-exists} allows to make a call only when outbound
601 packets exists. Combined with seconds-aware cron expression that can be
602 used as some kind of auto dialler.
605 @command{nncp-cronexpr} command allows you to check validity and
606 expectations of specified cron expression.
611 @section Release 5.6.0
615 @option{-autotoss*} option runs tosser not after the call, but every
616 second while it is active.
619 @option{autotoss}, @option{autotoss-doseen},
620 @option{autotoss-nofile}, @option{autotoss-nofreq},
621 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
622 @option{calls} configuration section. You can configure per-call
623 automatic tosser options.
626 Use vendoring, instead of @env{$GOPATH} overriding during tarball
627 installation, because current minimal Go's version is 1.12 and it
633 @section Release 5.5.1
637 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
638 variables in @file{config} during installation.
643 @section Release 5.5.0
647 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
648 @command{nncp-bundle} and @command{nncp-stat}.
651 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
654 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
655 options now. Uncompressed packets are not compatible with previous NNCP
659 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
660 have @option{-autotoss*} options for running tosser after call is ended.
663 Updated dependencies. Minimal required Go version is 1.12.
668 @section Release 5.4.1
672 Fixed @code{SENDMAIL} variable usage during the build.
677 @section Release 5.4.0
681 Updated dependencies.
684 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
685 This should not influence package maintainers, because minimal @command{redo}
686 implementation is included in tarball.
691 @section Release 5.3.3
695 More various error checks.
698 Updated dependencies.
703 @section Release 5.3.2
707 Fixed incorrect logic of @option{onlinedeadline} timeout, where
708 connection won't take into account incoming packets events and will
709 forcefully disconnect.
714 @section Release 5.3.1
718 Fixed @option{onlinedeadline} workability with call addresses that use
719 external commands (@verb{#"|somecmd"#}).
722 @command{nncp-stat} has @option{-pkt} option displaying information
723 about each packet in the spool.
728 @section Release 5.3.0
732 Progress messages contain prefix, describing the running action.
735 Fixed not occurring handshake messages padding.
738 Finish all SP protocol related goroutines, less memory leak.
741 SP protocol generates less socket write calls, thus generating less TCP
745 Check @option{onlinedeadline} and @option{maxonlinetime} options every
746 second, independently from socket reads (up to 10 seconds).
749 Once per minute, if no other traffic exists, PING packets are sent in
750 SP-connection. That allows faster determining of connection unworkability.
753 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
758 @section Release 5.2.1
762 Fixed SP protocol error handling, sometimes causing program panic.
767 @section Release 5.2.0
771 Most commands by default show oneline operations progress.
772 @option{-progress}, @option{-noprogress} command line options,
773 @option{noprogress} configuration file option appeared.
776 Fixed incorrect @command{nncp-check} command return code, that returned
777 bad code when everything is good.
780 Free disk space check during @command{nncp-bundle -rx} call.
785 @section Release 5.1.2
789 @strong{Critical} vulnerability: remote peers authentication could lead
790 to incorrect identification of remote side, allowing foreign encrypted
794 Bugfix: private and public Noise keys were swapped in newly created
795 configuration files, that lead to inability to authenticate online peers.
798 Explicit directories @code{fsync}-ing for guaranteed files renaming.
803 @section Release 5.1.1
807 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
812 @section Release 5.1.0
816 @command{nncp-file} can send directories, automatically creating pax
820 Free disk space is checked during outbound packets creation.
823 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
824 file options replaced with the structure:
825 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
828 Added @option{freq.maxsize} configuration file option, forbidding of
829 freq sending larger than specified size.
832 Ability to notify about successfully executed commands (exec) with
833 @option{notify.exec} configuration file option.
838 @section Release 5.0.0
842 @strong{Incompatible} configuration file format change: YAML is
843 replaced with Hjson, due to its simplicity, without noticeable lack
844 of either functionality or convenience.
847 @strong{Incompatible} plain packet format changes. Older versions are
848 not supported. @code{zlib} compression is replaced with
849 @code{Zstandard}, due to its speed and efficiency, despite library
850 version is not mature enough.
853 Ability to call remote nodes via pipe call of external command, not only
857 @command{nncp-cfgnew} generates configuration file with many
858 comments. @option{-nocomments} option can be used for an old
862 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
863 avoid possible collisions with @file{.nncp.chunkCTR}.
866 Ability to override process umask through configuration file option.
869 Files and directories are created with 666/777 permissions by default,
870 allowing control with @command{umask}.
873 Updated dependencies.
876 Full usage of go modules for dependencies management
877 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
880 Forbid any later GNU GPL version autousage
881 (project's licence now is GNU GPLv3-only).
888 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
896 @strong{Incompatible} encrypted and eblob packet format change: AEAD
897 encryption mode with 128 KiB blocks is used now, because previously
898 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
899 decrypted data to external command. Older versions are not supported.
902 Available free space checking before copying in @command{nncp-xfer},
903 @command{nncp-daemon}, @command{nncp-call(er)}.
906 @command{nncp-call} has ability only to list packets on remote node,
907 without their transmission.
910 @command{nncp-call} has ability to transfer only specified packets.
913 Workability of @option{xxrate} preference in @option{calls}
914 configuration file section.
917 Dependant libraries are updated.
923 Begin using of @code{go.mod} subsystem.
930 @item @command{nncp-daemon} can be run as @command{inetd}-service.
938 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
939 if @file{.seen} exists and treat it like file was already downloaded.
940 Possibly it was transferred out-of-bound and remote side needs to be
944 If higher priority packet is spooled, then @command{nncp-daemon} will
945 queue its sending first, interrupting lower priority transmissions.
948 Simple packet rate limiter added to online-related tools
949 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
952 Ability to specify niceness with symbolic notation:
953 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
956 Changed default niceness levels:
957 for @command{nncp-exec} from 64 to 96,
958 for @command{nncp-freq} from 64 to 160,
959 for @command{nncp-file} from 196 to 224.
967 @strong{Incompatible} @emph{bundle} archive format changes and
968 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
969 valid tar archives, but Go 1.9 made them invalid because of long paths
970 inside. NNCP accidentally was dependant on that bug. Explicit adding of
971 @file{NNCP/} directory in archive restores workability with valid tar
979 Ability to disable relaying at all using @verb{|-via -|} command line option.
987 @strong{Incompatible} plain packet format changes. Older versions are
991 Ability to queue remote command execution, by configuring @option{exec}
992 option in configuration file and using @command{nncp-exec} command:
995 @command{nncp-mail} command is replaced with more flexible
996 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
997 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
999 @option{sendmail} configuration file option is replaced with
1000 @option{exec}. @code{sendmail: [@dots{}]} must be replaced with
1001 @code{exec: sendmail: [@dots{}]}.
1005 Ability to override @option{via} configuration option for destination
1006 node via @option{-via} command line option for following commands:
1007 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
1010 Chunked files, having size less than specified chunk size, will be sent
1011 as an ordinary single file.
1014 Exec commands are invoked with additional @env{$NNCP_NICE} and
1015 @env{$NNCP_SELF} environment variables.
1018 Files, that are sent as a reply to freq, have niceness level taken from
1019 the freq packet. You can set desired niceness during @command{nncp-freq}
1020 invocation using @option{-replynice} option.
1023 @command{nncp-toss} command can ignore specified packet types during
1024 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
1028 @command{nncp-file} command uses
1029 @option{FreqMinSize}/@option{FreqChunked} configuration file options
1030 for @option{-minsize}/@option{-chunked} by default. You can turn this
1031 off by specifying zero value.
1036 @section Release 2.0
1040 @strong{Incompatible} encrypted/eblob packet format changes. Older
1041 versions are not supported.
1044 Twofish encryption algorithm is replaced with ChaCha20. It is much more
1045 faster. One cryptographic primitive less.
1048 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
1049 another cryptographic primitive less (assuming that BLAKE2X is nearly
1050 identical to BLAKE2).
1055 @section Release 1.0
1059 @strong{Incompatible} encrypted packet format changes. Older versions
1063 @command{nncp-bundle} command can either create stream of encrypted
1064 packets, or digest it. It is useful when dealing with
1065 @code{stdin}/@code{stdout} based transmission methods (like writing to
1066 CD-ROM without intermediate prepared ISO image and working with tape
1070 @command{nncp-toss} is able to create @file{.seen} files preventing
1071 duplicate packets receiving.
1074 Single background checksum verifier worker is allowed in
1075 @command{nncp-call}. This is helpful when thousands of small inbound
1076 packets could create many goroutines.
1079 Ability to override path to spool directory and logfile through either
1080 command line argument, or environment variable.
1083 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
1084 @file{.part}, @file{.lock} and temporary files.
1089 @section Release 0.12
1091 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
1095 @section Release 0.11
1097 @item @command{nncp-stat}'s command output is sorted by node name.
1101 @section Release 0.10
1104 @command{nncp-freq}'s @file{DST} argument is optional now. Last
1105 @file{SRC} path's element will be used by default.
1109 @section Release 0.9
1112 Fix @option{-rx}/@option{-tx} arguments processing in
1113 @command{nncp-call} command. They were ignored.
1117 @section Release 0.8
1120 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1121 option for unchunked transfer was not in KiBs, but in bytes.
1125 @section Release 0.7
1129 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1130 encrypted temporary file for that.
1133 Chunked files transmission appeared with corresponding
1134 @command{nncp-reass} command and @option{freqchunked} configuration file
1135 entry. Useful for transferring big files over small storage devices.
1138 @option{freqminsize} configuration file option, analogue to
1139 @option{-minsize} one.
1142 @command{nncp-xfer}'s @option{-force} option is renamed to
1143 @option{-mkdir} for clarity.
1146 @option{-minsize} option is specified in KiBs, not bytes, for
1150 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1151 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1152 common prefix and are grouped together for convenience.
1155 @command{nncp-cfgenc} command appeared, allowing configuration file
1156 encryption/decryption, for keeping it safe without any either OpenPGP or
1157 similar tools usage.
1160 Cryptographic libraries (dependencies) are updated.
1165 @section Release 0.6
1167 @item Small @command{nncp-rm} command appeared.
1168 @item Cryptographic libraries (dependencies) are updated.
1172 @section Release 0.5
1175 Trivial small fix in default niceness level of @command{nncp-file}
1176 and @command{nncp-freq} commands.
1180 @section Release 0.4
1184 Small fix in @command{nncp-call}, @command{nncp-caller},
1185 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1189 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1190 and more convenient to use.
1193 @command{nncp-mincfg} command appeared: helper allowing to create
1194 minimalistic stripped down configuration file without private keys, that
1195 is useful during @command{nncp-xfer} usage.
1200 @section Release 0.3
1202 @item Fixed compatibility with Go 1.6.
1206 @section Release 0.2
1210 @strong{Incompatible} packet's format change (magic number is changed
1211 too): size field is encrypted and is not send in plaintext anymore.
1214 @option{-minsize} option gives ability to automatically pad outgoing
1215 packets to specified minimal size.
1218 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1219 always check new @emph{tx} packets appearance in the background while
1220 connected. Remote side is immediately notified.
1223 @option{-onlinedeadline} option gives ability to configure timeout of
1224 inactivity of online connection, when it could be disconnected. It could
1225 be used to keep connection alive for a long time.
1228 @option{-maxonlinetime} option gives ability to set maximal allowable
1229 online connection aliveness time.
1232 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1235 @command{nncp-pkt} command can decompress the data.