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{{Short description|Computer network protocol}}
{{lowercase|title=binkp}}
'''Binkp''' is a protocol for transferring [[FidoNet]] or [[Social:WWIVnet|WWIVNet]] mail over reliable connections. It is typically used to deliver mail over the [[Internet|internet]], instead of point-to-point connections between [[Modem|modem]]s.

==Application==
Historically, [[FidoNet]] traffic was transferred mainly over [[Serial port|serial]] ([[RS-232]]) [[Modem|modem]] connections which might not have an [[Error detection and correction|error correction]] layer. These [[Modem|dial-up]]-oriented protocols for transferring FidoNet traffic like [http://www.ftsc.org/docs/fsc-0056.001 EMSI] or ZMODEM had to implement [[Engineering:Error recovery control|error-recovery]]. When the members of FidoNet started to use [[Internet protocol suite|TCP/IP]] to transfer FidoNet traffic, this error-recovery overhead became unnecessary. Assuming that the connection is reliable makes it possible to eliminate error-checking and unnecessary synchronization steps, achieving both ease of implementation and improved performance. The major advantage of binkp vs EMSI and ZMODEM is achieved over connections with large delays and low bandwidth.

IANA ([[Organization:Internet Assigned Numbers Authority|Internet Assigned Numbers Authority]]) has registered the port number 24554 for binkp when used over TCP/IP connections.

== History ==
*In 1996, Dima Maloff released the first draft of the protocol specification and the first mailer, binkd, that supported the new protocol.
*In 1997, [http://www.ritlabs.com/argus Argus] mailer began to support the binkp protocol.
*In 1999, Dima Maloff, Nick Soveiko and Maxim Masiutin submitted the protocol specification to the Fidonet Technical Standards Committee ([http://ftsc.org/ FTSC]), which published the document as Fidonet Standards Proposal ([http://www.ritlabs.com/binkp/ FSP-1011]).
*In 2005, FTSC assigned the Fidonet Technical Standard (FTS) status to the binkp protocol, and split the specification into four separate documents: Binkp/1.0 Protocol specification ([https://ftsc.org/docs/fts-1026.001 FTS-1026] {{Webarchive|url=https://web.archive.org/web/20220527130438/http://ftsc.org/docs/fts-1026.001 |date=2022-05-27 }}), Binkp/1.0 optional protocol extension CRAM ([http://ftsc.org/docs/fts-1027.001 FTS-1027]), Binkp protocol extension Non-reliable Mode ([http://ftsc.org/docs/fts-1028.001 FTS-1028]), and Binkp optional protocol extension Dataframe Compression ([http://ftsc.org/docs/fts-1029.001 FTS-1029]).
*On October 2, 2015, [[Software:WWIV|WWIV BBS]]'s [[Social:WWIVnet|WWIVnet]] implemented a binkp backbone for its network.

==External links==
*[http://ftsc.org/docs/fts-1026.001 binkp specification (FTS-1026), published in 2005]

[[Category:Internet protocols]]

{{Sourceattribution|Binkp}}