Binkp


binkp is a protocol for transferring FidoNet or WWIVNet mail over reliable connections. It is typically used to deliver mail over the internet, instead of point-to-point connections between modems.

Application

Historically, Fidonet traffic was transferred mainly over serial modem connections which might not have an error correction layer. These dial-up-oriented protocols for transferring Fidonet traffic like or Zmodem had to implement error-recovery. When the members of Fidonet started to use 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 has registered the port number 24554 for binkp when used over TCP/IP connections.

History