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* [nncp-devel] [EN] NNCP 5.3.0 release announcement
@ 2019-12-22 18:19 Sergey Matveev
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From: Sergey Matveev @ 2019-12-22 18:19 UTC (permalink / raw)
  To: nncp-devel

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I am pleased to announce NNCP 5.3.0 release availability!

NNCP (Node to Node copy) is a collection of utilities simplifying
secure store-and-forward files and mail exchanging.

This utilities are intended to help build up small size (dozens of
nodes) ad-hoc friend-to-friend (F2F) statically routed darknet
delay-tolerant networks for fire-and-forget secure reliable files, file
requests, Internet mail and commands transmission. All packets are
integrity checked, end-to-end encrypted (E2EE), explicitly authenticated
by known participants public keys. Onion encryption is applied to
relayed packets. Each node acts both as a client and server, can use
push and poll behaviour model.

Out-of-box offline sneakernet/floppynet, dead drops, sequential and
append-only CD-ROM/tape storages, air-gapped computers support. But
online TCP daemon with full-duplex resumable data transmission exists.

------------------------ >8 ------------------------

The main improvements for that release are:

* Progress messages contain prefix, describing the running action.
* Fixed not occurring handshake messages padding.
* Finish all SP protocol related goroutines, less memory leak.
* SP protocol generates less socket write calls, thus generating less
  TCP packets.
* Check "onlinedeadline" and "maxonlinetime" options every second,
  independently from socket reads (up to 10 seconds).
* Once per minute, if no other traffic exists, PING packets are sent
  in SP-connection.  That allows faster determining of connection
* nncp-toss uses lock-file to prevent simultaneous tossing.

------------------------ >8 ------------------------

NNCP's home page is:

Source code and its signature for that version can be found here: (1112 KiB)

SHA256 hash: 9F093115 506D00E7 2E41ACD6 3F283172 8430E1C2 8BA4A941 FFA3C65D 89AD4ED0
GPG key ID: 0x2B25868E75A1A953 NNCP releases <releases@nncpgo•org>
Fingerprint: 92C2 F0AE FE73 208E 46BF  F3DE 2B25 868E 75A1 A953

Please send questions regarding the use of NNCP, bug reports and patches
to mailing list:

Sergey Matveev (
OpenPGP: CF60 E89A 5923 1E76 E263  6422 AE1A 8109 E498 57EF

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2019-12-22 18:19 [nncp-devel] [EN] NNCP 5.3.0 release announcement Sergey Matveev